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4863 lines
133 KiB
C
Executable File
4863 lines
133 KiB
C
Executable File
/**
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@file game.h
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Main source file of Anarch the game that puts together all the pieces. main
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game logic is implemented here.
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Physics notes (you can break this when messing with constants):
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- Lowest ceiling under which player can fit is 4 height steps.
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- Widest hole over which player can run without jumping is 1 square.
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- Widest hole over which the player can jump is 3 squares.
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- Highest step a player can walk onto without jumping is 2 height steps.
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- Highest step a player can jump onto is 3 height steps.
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by Miloslav Ciz (drummyfish), 2019
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Released under CC0 1.0 (https://creativecommons.org/publicdomain/zero/1.0/)
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plus a waiver of all other intellectual property. The goal of this work is
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be and remain completely in the public domain forever, available for any use
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whatsoever.
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*/
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#ifndef _SFG_GAME_H
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#define _SFG_GAME_H
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#include <stdint.h> // Needed for fixed width types, can easily be replaced.
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/*
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The following keys are mandatory to be implemented on any platform in order
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for the game to be playable. Enums are bloat.
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*/
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#define SFG_KEY_UP 0
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#define SFG_KEY_RIGHT 1
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#define SFG_KEY_DOWN 2
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#define SFG_KEY_LEFT 3
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#define SFG_KEY_A 4 ///< fire, confirm
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#define SFG_KEY_B 5 ///< cancel, strafe, look up/down
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#define SFG_KEY_C 6 ///< menu, jump, switch weapons
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/*
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The following keys are optional for a platform to implement. They just make
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the controls more comfortable.
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*/
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#define SFG_KEY_JUMP 7
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#define SFG_KEY_STRAFE_LEFT 8
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#define SFG_KEY_STRAFE_RIGHT 9
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#define SFG_KEY_MAP 10
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#define SFG_KEY_TOGGLE_FREELOOK 11
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#define SFG_KEY_NEXT_WEAPON 12
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#define SFG_KEY_PREVIOUS_WEAPON 13
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#define SFG_KEY_MENU 14
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#define SFG_KEY_CYCLE_WEAPON 15
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#define SFG_KEY_COUNT 16 ///< Number of keys.
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/* ============================= PORTING =================================== */
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/* When porting, do the following:
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- Include this file (and possibly other optional files, like sounds.h) in
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your main_*.c frontend source.
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- Implement the following functions in your frontend source.
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- Call SFG_init() from your frontend initialization code.
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- Call SFG_mainLoopBody() from within your frontend main loop. */
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#ifndef SFG_LOG
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#define SFG_LOG(str) {} ///< Can be redefined to log game messages.
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#endif
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#ifndef SFG_CPU_LOAD
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#define SFG_CPU_LOAD(percent) {} ///< Can be redefined to check CPU load in %.
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#endif
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#ifndef SFG_GAME_STEP_COMMAND
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#define SFG_GAME_STEP_COMMAND {} /**< Will be called each simlation step (good
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for creating deterministic behavior such as
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demos (SFG_mainLoopBody() calls potentially
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multiple simulation steps). */
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#endif
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/**
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Returns 1 (0) if given key is pressed (not pressed). At least the mandatory
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keys have to be implemented, the optional keys don't have to ever return 1.
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See the key constant definitions to see which ones are mandatory.
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*/
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int8_t SFG_keyPressed(uint8_t key);
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/**
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Optinal function for mouse/joystick/analog controls, gets mouse x and y offset
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in pixels from the game screen center (to achieve classic FPS mouse controls
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the platform should center the mouse after this call). If the platform isn't
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using a mouse, this function can simply return [0,0] offset at each call, or
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even do nothing at all (leave the variables as are).
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*/
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void SFG_getMouseOffset(int16_t *x, int16_t *y);
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/**
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Returns time in milliseconds sice program start.
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*/
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uint32_t SFG_getTimeMs();
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/**
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Sleep (yield CPU) for specified amount of ms. This is used to relieve CPU
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usage. If your platform doesn't need this or handles it in other way, this
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function can do nothing.
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*/
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void SFG_sleepMs(uint16_t timeMs);
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/**
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Set specified screen pixel. ColorIndex is the index of the game's palette.
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The function doesn't have to (and shouldn't, for the sake of performance)
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check whether the coordinates are within screen bounds.
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*/
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static inline void SFG_setPixel(uint16_t x, uint16_t y, uint8_t colorIndex);
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/**
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Play given sound effect (SFX). This function may or may not use the sound
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samples provided in sounds.h, and it may or may not ignore the (logarithmic)
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volume parameter (0 to 255). Depending on the platform, the function can play
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completely different samples or even e.g. just beeps. If the platform can't
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play sounds, this function implementation can simply be left empty. This
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function doesn't have to implement safety measures, the back end takes cares
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of them.
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*/
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void SFG_playSound(uint8_t soundIndex, uint8_t volume);
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#define SFG_MUSIC_TURN_OFF 0
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#define SFG_MUSIC_TURN_ON 1
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#define SFG_MUSIC_NEXT 2
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/**
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Informs the frontend how music should play, e.g. turn on/off, change track,
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... See SFG_MUSIC_* constants. Playing music is optional and the frontend may
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ignore this. If a frontend wants to implement music, it can use the bytebeat
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provided in sounds.h or use its own.
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*/
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void SFG_setMusic(uint8_t value);
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#define SFG_EVENT_VIBRATE 0 ///< the controller should vibrate (or blink etc.)
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#define SFG_EVENT_PLAYER_HURT 1
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#define SFG_EVENT_PLAYER_DIES 2
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#define SFG_EVENT_LEVEL_STARTS 3
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#define SFG_EVENT_LEVEL_WON 4
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#define SFG_EVENT_MONSTER_DIES 5
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#define SFG_EVENT_PLAYER_TAKES_ITEM 6
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#define SFG_EVENT_EXPLOSION 7
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#define SFG_EVENT_PLAYER_TELEPORTS 8
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#define SFG_EVENT_PLAYER_CHANGES_WEAPON 9
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/**
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This is an optional function that informs the frontend about special events
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which may trigger something special on the platform, such as a controller
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vibration, logging etc. The implementation of this function may be left empty.
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*/
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void SFG_processEvent(uint8_t event, uint8_t data);
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#define SFG_SAVE_SIZE 12 ///< size of the save in bytes
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/**
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Optional function for permanently saving the game state. Platforms that don't
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have permanent storage (HDD, EEPROM etc.) may let this function simply do
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nothing. If implemented, the function should save the passed data into its
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permanent storage, e.g. a file, a cookie etc.
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*/
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void SFG_save(uint8_t data[SFG_SAVE_SIZE]);
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/**
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Optional function for retrieving game data that were saved to permanent
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storage. Platforms without permanent storage may let this function do nothing.
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If implemented, the function should fill the passed array with data from
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permanent storage, e.g. a file, a cookie etc.
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If this function is called before SFG_save was ever called and no data is
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present in permanent memory, this function should do nothing (leave the data
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array as is).
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This function should return 1 if saving/loading is possible or 0 if not (this
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will be used by the game to detect saving/loading capability).
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*/
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uint8_t SFG_load(uint8_t data[SFG_SAVE_SIZE]);
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/* ========================================================================= */
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/**
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Main game loop body, call this inside your platform's specific main loop.
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Returns 1 if the game continues or 0 if the game was exited and program should
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halt. This functions handles reaching the target FPS and sleeping for
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relieving CPU, so don't do this.
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*/
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uint8_t SFG_mainLoopBody();
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/**
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Initializes the game, call this in the platform's initialization code.
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*/
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void SFG_init();
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#include "settings.h"
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#if SFG_ARDUINO
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#include <avr/pgmspace.h>
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#define SFG_PROGRAM_MEMORY const PROGMEM
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#define SFG_PROGRAM_MEMORY_U8(addr) pgm_read_byte(addr)
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#else
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#define SFG_PROGRAM_MEMORY static const
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#define SFG_PROGRAM_MEMORY_U8(addr) ((uint8_t) (*(addr)))
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#endif
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#include "images.h" // don't change the order of these includes
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#include "levels.h"
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#include "texts.h"
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#include "palette.h"
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#if SFG_TEXTURE_DISTANCE == 0
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#define RCL_COMPUTE_WALL_TEXCOORDS 0
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#endif
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#define RCL_PIXEL_FUNCTION SFG_pixelFunc
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#define RCL_TEXTURE_VERTICAL_STRETCH 0
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#define RCL_CAMERA_COLL_HEIGHT_BELOW 800
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#define RCL_CAMERA_COLL_HEIGHT_ABOVE 200
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#define RCL_HORIZONTAL_FOV SFG_FOV_HORIZONTAL
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#define RCL_VERTICAL_FOV SFG_FOV_VERTICAL
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#include "raycastlib.h"
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#include "constants.h"
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typedef struct
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{
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uint8_t coords[2];
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uint8_t state; /**< door state in format:
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MSB ccbaaaaa LSB
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aaaaa: current door height (how much they're open)
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b: whether currently going up (0) or down (1)
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cc: by which card (key) the door is unlocked, 00
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means no card (unlocked), 1 means card 0 etc. */
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} SFG_DoorRecord;
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#define SFG_SPRITE_SIZE(size0to3) \
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(((size0to3 + 3) * SFG_BASE_SPRITE_SIZE) / 4)
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#define SFG_SPRITE_SIZE_PIXELS(size0to3) \
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((SFG_SPRITE_SIZE(size0to3) * SFG_GAME_RESOLUTION_Y) / RCL_UNITS_PER_SQUARE)
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#define SFG_SPRITE_SIZE_TO_HEIGHT_ABOVE_GROUND(size0to3) \
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(SFG_SPRITE_SIZE(size0to3) / 2)
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/**
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Holds information about one instance of a level item (a type of level element,
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e.g. pickable items, decorations etc.). The format is following:
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MSB abbbbbbb LSB
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a: active flag, 1 means the item is nearby to player and is active
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bbbbbbb: index to elements array of the current level, pointing to element
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representing this item
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*/
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typedef uint8_t SFG_ItemRecord;
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#define SFG_ITEM_RECORD_ACTIVE_MASK 0x80
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#define SFG_ITEM_RECORD_LEVEL_ELEMENT(itemRecord) \
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(SFG_currentLevel.levelPointer->elements[itemRecord & \
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~SFG_ITEM_RECORD_ACTIVE_MASK])
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typedef struct
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{
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uint8_t stateType; /**< Holds state (lower 4 bits) and type of monster (upper
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4 bits). */
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uint8_t coords[2]; /**< monster position, in 1/4s of a square */
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uint8_t health;
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} SFG_MonsterRecord;
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#define SFG_MR_STATE(mr) ((mr).stateType & SFG_MONSTER_MASK_STATE)
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#define SFG_MR_TYPE(mr) \
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(SFG_MONSTER_INDEX_TO_TYPE(((mr).stateType & SFG_MONSTER_MASK_TYPE) >> 4))
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#define SFG_MONSTER_COORD_TO_RCL_UNITS(c) ((RCL_UNITS_PER_SQUARE / 8) + c * 256)
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#define SFG_MONSTER_COORD_TO_SQUARES(c) (c / 4)
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#define SFG_ELEMENT_COORD_TO_RCL_UNITS(c) \
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(c * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 2)
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#define SFG_MONSTER_MASK_STATE 0x0f
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#define SFG_MONSTER_MASK_TYPE 0xf0
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#define SFG_MONSTER_STATE_INACTIVE 0 ///< Not nearby, not actively updated.
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#define SFG_MONSTER_STATE_IDLE 1
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#define SFG_MONSTER_STATE_ATTACKING 2
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#define SFG_MONSTER_STATE_HURTING 3
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#define SFG_MONSTER_STATE_DYING 4
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#define SFG_MONSTER_STATE_GOING_N 5
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#define SFG_MONSTER_STATE_GOING_NE 6
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#define SFG_MONSTER_STATE_GOING_E 7
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#define SFG_MONSTER_STATE_GOING_SE 8
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#define SFG_MONSTER_STATE_GOING_S 9
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#define SFG_MONSTER_STATE_GOING_SW 10
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#define SFG_MONSTER_STATE_GOING_W 11
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#define SFG_MONSTER_STATE_GOING_NW 12
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#define SFG_MONSTER_STATE_DEAD 13
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typedef struct
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{
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uint8_t type;
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uint8_t doubleFramesToLive; /**< This number times two (because 255 could be
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too little at high FPS) says after how many
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frames the projectile is destroyed. */
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uint16_t position[3]; /**< Current position, stored as u16 to save space, as
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that is exactly enough to store position on 64x64
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map. */
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int16_t direction[3]; /**< Added to position each game step. */
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} SFG_ProjectileRecord;
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#define SFG_GAME_STATE_INIT 0 ///< first state, waiting for key releases
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#define SFG_GAME_STATE_PLAYING 1
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#define SFG_GAME_STATE_WIN 2
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#define SFG_GAME_STATE_LOSE 3
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#define SFG_GAME_STATE_INTRO 4
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#define SFG_GAME_STATE_OUTRO 5
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#define SFG_GAME_STATE_MAP 6
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#define SFG_GAME_STATE_LEVEL_START 7
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#define SFG_GAME_STATE_MENU 8
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#define SFG_MENU_ITEM_CONTINUE 0
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#define SFG_MENU_ITEM_MAP 1
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#define SFG_MENU_ITEM_PLAY 2
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#define SFG_MENU_ITEM_LOAD 3
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#define SFG_MENU_ITEM_SOUND 4
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#define SFG_MENU_ITEM_SHEAR 5
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#define SFG_MENU_ITEM_EXIT 6
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#define SFG_MENU_ITEM_NONE 255
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/*
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GLOBAL VARIABLES
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===============================================================================
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*/
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/**
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Groups global variables related to the game as such in a single struct. There
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are still other global structs for player, level etc.
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*/
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struct
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{
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uint8_t state; ///< Current game state.
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uint32_t stateChangeTime; ///< Time in ms at which the state was changed.
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uint8_t currentRandom; ///< for RNG
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uint8_t spriteAnimationFrame;
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uint8_t soundsPlayedThisFrame; /**< Each bit says whether given sound was
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played this frame, prevents playing too many
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sounds at once. */
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RCL_RayConstraints rayConstraints;
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uint8_t keyStates[SFG_KEY_COUNT]; /**< Pressed states of keys, each value
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stores the number of frames for which the
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key has been held. */
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uint8_t zBuffer[SFG_Z_BUFFER_SIZE];
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uint8_t textureAverageColors[SFG_WALL_TEXTURE_COUNT]; /**< Contains average
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color for each wall texture. */
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int8_t backgroundScaleMap[SFG_GAME_RESOLUTION_Y];
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uint16_t backgroundScroll;
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uint8_t spriteSamplingPoints[SFG_MAX_SPRITE_SIZE]; /**< Helper for
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precomputing sprite
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sampling positions for
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drawing. */
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uint32_t frameTime; ///< time (in ms) of the current frame start
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uint32_t frame; ///< frame number
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uint8_t selectedMenuItem;
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uint8_t selectedLevel; ///< level to play selected in the main menu
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uint8_t antiSpam; ///< Prevents log message spamming.
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uint8_t settings; /**< dynamic game settings (can be changed at runtime),
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bit meaning:
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MSB -------- LSB
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||||
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|||\_ sound (SFX)
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||\__ music
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|\___ shearing
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\____ freelook (shearing not sliding back) */
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uint8_t blink; ///< Says whether blinkg is currently on or off.
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uint8_t saved; /**< Helper variable to know if game was saved. Can be
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0 (not saved), 1 (just saved) or 255 (can't save).*/
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uint8_t save[SFG_SAVE_SIZE]; /**< Stores the game save state that's kept in
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the persistent memory.
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The save format is binary and platform independent.
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The save contains game settings, game progress and a
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saved position. The format is as follows:
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0 4b highest level that has been reached
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0 4b level number of the saved position (15: no save)
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1 8b game settings (SFG_game.settings)
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2 8b health at saved position
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3 8b bullet ammo at saved position
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4 8b rocket ammo at saved position
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5 8b plasma ammo at saved position
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6 32b little endian total play time, in 10ths of sec
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10 16b little endian total enemies killed from start */
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uint8_t continues; ///< Whether the game continues or was exited.
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} SFG_game;
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#define SFG_SAVE_TOTAL_TIME (SFG_game.save[6] + SFG_game.save[7] * 256 + \
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SFG_game.save[8] * 65536 + SFG_game.save[9] * 4294967296)
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/**
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Stores player state.
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*/
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struct
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{
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RCL_Camera camera;
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int8_t squarePosition[2];
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RCL_Vector2D direction;
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RCL_Unit verticalSpeed;
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RCL_Unit previousVerticalSpeed; /**< Vertical speed in previous frame, needed
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for determining whether player is in the
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air. */
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uint16_t headBobFrame;
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uint8_t weapon; ///< currently selected weapon
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uint8_t health;
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uint32_t weaponCooldownFrames; ///< frames left for weapon cooldow
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uint32_t lastHurtFrame;
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uint32_t lastItemTakenFrame;
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uint8_t ammo[SFG_AMMO_TOTAL];
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uint8_t cards; /**< Lowest 3 bits say which access cards
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have been taken., the next 3 bits say
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which cards should be blinking in the HUD,
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the last 2 bits are a blink reset counter. */
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uint8_t justTeleported;
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int8_t previousWeaponDirection; ///< Direction (+/0/-) of previous weapon.
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} SFG_player;
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/**
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Stores the current level and helper precomputed vaues for better performance.
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*/
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struct
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{
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const SFG_Level *levelPointer;
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uint8_t levelNumber;
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const uint8_t* textures[7]; ///< textures the level is using
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uint32_t timeStart;
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uint32_t frameStart;
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uint32_t completionTime10sOfS; ///< completion time in 10th of second
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uint8_t floorColor;
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uint8_t ceilingColor;
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SFG_DoorRecord doorRecords[SFG_MAX_DOORS];
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uint8_t doorRecordCount;
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uint8_t checkedDoorIndex; ///< Says which door are currently being checked.
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SFG_ItemRecord itemRecords[SFG_MAX_ITEMS]; ///< Holds level items.
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uint8_t itemRecordCount;
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uint8_t checkedItemIndex; ///< Same as checkedDoorIndex, but for items.
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SFG_MonsterRecord monsterRecords[SFG_MAX_MONSTERS];
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uint8_t monsterRecordCount;
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uint8_t checkedMonsterIndex;
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SFG_ProjectileRecord projectileRecords[SFG_MAX_PROJECTILES];
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uint8_t projectileRecordCount;
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uint8_t bossCount;
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uint8_t monstersDead;
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uint8_t backgroundImage;
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uint8_t teleporterCount;
|
|
uint16_t mapRevealMask; /**< Bits say which parts of the map have been
|
|
revealed. */
|
|
uint8_t itemCollisionMap[(SFG_MAP_SIZE * SFG_MAP_SIZE) / 8];
|
|
/**< Bit array, for each map square says whether there
|
|
is a colliding item or not. */
|
|
} SFG_currentLevel;
|
|
|
|
#if SFG_ARDUINO
|
|
/**
|
|
Copy of the current level that is stored in RAM. This is only done on Arduino
|
|
because accessing it in program memory (PROGMEM) directly would be a pain.
|
|
Because of this Arduino needs more RAM.
|
|
*/
|
|
SFG_Level SFG_ramLevel;
|
|
#endif
|
|
|
|
/**
|
|
Helper function for accessing the itemCollisionMap bits.
|
|
*/
|
|
void SFG_getItemCollisionMapIndex(
|
|
uint8_t x, uint8_t y, uint16_t *byte, uint8_t *bit)
|
|
{
|
|
uint16_t index = y * SFG_MAP_SIZE + x;
|
|
|
|
*byte = index / 8;
|
|
*bit = index % 8;
|
|
}
|
|
|
|
void SFG_setItemCollisionMapBit(uint8_t x, uint8_t y, uint8_t value)
|
|
{
|
|
uint16_t byte;
|
|
uint8_t bit;
|
|
|
|
SFG_getItemCollisionMapIndex(x,y,&byte,&bit);
|
|
|
|
SFG_currentLevel.itemCollisionMap[byte] &= ~(0x01 << bit);
|
|
SFG_currentLevel.itemCollisionMap[byte] |= (value & 0x01) << bit;
|
|
}
|
|
|
|
uint8_t SFG_getItemCollisionMapBit(uint8_t x, uint8_t y)
|
|
{
|
|
uint16_t byte;
|
|
uint8_t bit;
|
|
|
|
SFG_getItemCollisionMapIndex(x,y,&byte,&bit);
|
|
return (SFG_currentLevel.itemCollisionMap[byte] >> bit) & 0x01;
|
|
}
|
|
|
|
#if SFG_DITHERED_SHADOW
|
|
static const uint8_t SFG_ditheringPatterns[] =
|
|
{
|
|
0,0,0,0,
|
|
0,0,0,0,
|
|
|
|
0,0,0,0,
|
|
0,1,0,0,
|
|
|
|
0,0,0,0,
|
|
0,1,0,1,
|
|
|
|
1,0,1,0,
|
|
0,1,0,0,
|
|
|
|
1,0,1,0,
|
|
0,1,0,1,
|
|
|
|
1,0,1,0,
|
|
0,1,1,1,
|
|
|
|
1,1,1,1,
|
|
0,1,0,1,
|
|
|
|
1,1,1,1,
|
|
0,1,1,1,
|
|
|
|
1,1,1,1,
|
|
1,1,1,1
|
|
};
|
|
#endif
|
|
|
|
/*
|
|
FUNCTIONS
|
|
===============================================================================
|
|
*/
|
|
|
|
/**
|
|
Returns a pseudorandom byte. This is a very simple congrent generator, its
|
|
parameters have been chosen so that each number (0-255) is included in the
|
|
output exactly once!
|
|
*/
|
|
uint8_t SFG_random()
|
|
{
|
|
SFG_game.currentRandom *= 13;
|
|
SFG_game.currentRandom += 7;
|
|
|
|
return SFG_game.currentRandom;
|
|
}
|
|
|
|
void SFG_playGameSound(uint8_t soundIndex, uint8_t volume)
|
|
{
|
|
if (!(SFG_game.settings & 0x01))
|
|
return;
|
|
|
|
uint8_t mask = 0x01 << soundIndex;
|
|
|
|
if (!(SFG_game.soundsPlayedThisFrame & mask))
|
|
{
|
|
SFG_playSound(soundIndex,volume);
|
|
SFG_game.soundsPlayedThisFrame |= mask;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Returns a damage value for specific attack type (SFG_WEAPON_FIRE_TYPE_...),
|
|
with added randomness (so the values will differ). For explosion pass
|
|
SFG_WEAPON_FIRE_TYPE_FIREBALL.
|
|
*/
|
|
uint8_t SFG_getDamageValue(uint8_t attackType)
|
|
{
|
|
if (attackType >= SFG_WEAPON_FIRE_TYPES_TOTAL)
|
|
return 0;
|
|
|
|
int32_t value = SFG_attackDamageTable[attackType]; // has to be signed
|
|
int32_t maxAdd = (value * SFG_DAMAGE_RANDOMNESS) / 256;
|
|
|
|
value = value + (maxAdd / 2) - (SFG_random() * maxAdd / 256);
|
|
|
|
if (value < 0)
|
|
value = 0;
|
|
|
|
return value;
|
|
}
|
|
|
|
/**
|
|
Saves game data to persistent storage.
|
|
*/
|
|
void SFG_gameSave()
|
|
{
|
|
if (SFG_game.saved == SFG_CANT_SAVE)
|
|
return;
|
|
|
|
SFG_LOG("saving game data");
|
|
|
|
SFG_save(SFG_game.save);
|
|
}
|
|
|
|
/**
|
|
Loads game data from persistent storage.
|
|
*/
|
|
void SFG_gameLoad()
|
|
{
|
|
if (SFG_game.saved == SFG_CANT_SAVE)
|
|
return;
|
|
|
|
SFG_LOG("loading game data");
|
|
|
|
uint8_t result = SFG_load(SFG_game.save);
|
|
|
|
if (result == 0)
|
|
SFG_game.saved = SFG_CANT_SAVE;
|
|
}
|
|
|
|
/**
|
|
Returns ammo type for given weapon.
|
|
*/
|
|
uint8_t SFG_weaponAmmo(uint8_t weapon)
|
|
{
|
|
if (weapon == SFG_WEAPON_KNIFE)
|
|
return SFG_AMMO_NONE;
|
|
if (weapon == SFG_WEAPON_MACHINE_GUN ||
|
|
weapon == SFG_WEAPON_SHOTGUN)
|
|
return SFG_AMMO_BULLETS;
|
|
else if (weapon == SFG_WEAPON_ROCKET_LAUNCHER)
|
|
return SFG_AMMO_ROCKETS;
|
|
else
|
|
return SFG_AMMO_PLASMA;
|
|
}
|
|
|
|
RCL_Unit SFG_taxicabDistance(
|
|
RCL_Unit x0, RCL_Unit y0, RCL_Unit z0, RCL_Unit x1, RCL_Unit y1, RCL_Unit z1)
|
|
{
|
|
return (RCL_abs(x0 - x1) + RCL_abs(y0 - y1) + RCL_abs(z0 - z1));
|
|
}
|
|
|
|
uint8_t SFG_isInActiveDistanceFromPlayer(RCL_Unit x, RCL_Unit y, RCL_Unit z)
|
|
{
|
|
return SFG_taxicabDistance(
|
|
x,y,z,SFG_player.camera.position.x,SFG_player.camera.position.y,
|
|
SFG_player.camera.height) <= SFG_LEVEL_ELEMENT_ACTIVE_DISTANCE;
|
|
}
|
|
|
|
/**
|
|
Function called when a level end to compute the stats etc.
|
|
*/
|
|
void SFG_levelEnds()
|
|
{
|
|
SFG_currentLevel.completionTime10sOfS = (SFG_MS_PER_FRAME *
|
|
(SFG_game.frame - SFG_currentLevel.frameStart)) / 100;
|
|
|
|
SFG_currentLevel.monstersDead = 0;
|
|
|
|
for (uint16_t i = 0; i < SFG_currentLevel.monsterRecordCount; ++i)
|
|
if (SFG_currentLevel.monsterRecords[i].health == 0)
|
|
SFG_currentLevel.monstersDead++;
|
|
|
|
uint32_t totalTime = SFG_SAVE_TOTAL_TIME;
|
|
|
|
if ((SFG_currentLevel.levelNumber == 0) || (totalTime != 0))
|
|
{
|
|
SFG_LOG("Updating save totals.");
|
|
|
|
totalTime += SFG_currentLevel.completionTime10sOfS;
|
|
|
|
for (uint8_t i = 0; i < 4; ++i)
|
|
{
|
|
SFG_game.save[6 + i] = totalTime % 256;
|
|
totalTime /= 256;
|
|
}
|
|
|
|
SFG_game.save[10] += SFG_currentLevel.monstersDead % 256;
|
|
SFG_game.save[11] += SFG_currentLevel.monstersDead / 256;
|
|
}
|
|
|
|
SFG_game.save[0] =
|
|
(SFG_game.save[0] & 0x0f) | ((SFG_currentLevel.levelNumber + 1) << 4);
|
|
|
|
SFG_game.save[2] = SFG_player.health;
|
|
SFG_game.save[3] = SFG_player.ammo[0];
|
|
SFG_game.save[4] = SFG_player.ammo[1];
|
|
SFG_game.save[5] = SFG_player.ammo[2];
|
|
}
|
|
|
|
static inline uint8_t SFG_RCLUnitToZBuffer(RCL_Unit x)
|
|
{
|
|
x /= (RCL_UNITS_PER_SQUARE / 8);
|
|
|
|
uint8_t okay = x < 256;
|
|
|
|
return okay * (x + 1) - 1;
|
|
}
|
|
|
|
const uint8_t *SFG_getMonsterSprite(
|
|
uint8_t monsterType, uint8_t state, uint8_t frame)
|
|
{
|
|
uint8_t index =
|
|
state == SFG_MONSTER_STATE_DEAD ? 18 : 17;
|
|
// ^ makes the compiled binary smaller compared to returning pointers directly
|
|
|
|
if ((state != SFG_MONSTER_STATE_DYING) && (state != SFG_MONSTER_STATE_DEAD))
|
|
switch (monsterType)
|
|
{
|
|
case SFG_LEVEL_ELEMENT_MONSTER_SPIDER:
|
|
switch (state)
|
|
{
|
|
case SFG_MONSTER_STATE_ATTACKING: index = 1; break;
|
|
case SFG_MONSTER_STATE_IDLE: index = 0; break;
|
|
default: index = frame ? 0 : 2; break;
|
|
}
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_MONSTER_WARRIOR:
|
|
index = state != SFG_MONSTER_STATE_ATTACKING ? 6 : 7;
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_MONSTER_DESTROYER:
|
|
switch (state)
|
|
{
|
|
case SFG_MONSTER_STATE_ATTACKING: index = 4; break;
|
|
case SFG_MONSTER_STATE_IDLE: index = 3; break;
|
|
default: index = frame ? 3 : 5; break;
|
|
}
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_MONSTER_PLASMABOT:
|
|
index = state != SFG_MONSTER_STATE_ATTACKING ? 8 : 9;
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_MONSTER_ENDER:
|
|
switch (state)
|
|
{
|
|
case SFG_MONSTER_STATE_ATTACKING: index = 12; break;
|
|
case SFG_MONSTER_STATE_IDLE: index = 10; break;
|
|
default: index = frame ? 10 : 11; break;
|
|
}
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_MONSTER_TURRET:
|
|
switch (state)
|
|
{
|
|
case SFG_MONSTER_STATE_ATTACKING: index = 15; break;
|
|
case SFG_MONSTER_STATE_IDLE: index = 13; break;
|
|
default: index = frame ? 13 : 14; break;
|
|
}
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_MONSTER_EXPLODER:
|
|
default:
|
|
index = 16;
|
|
break;
|
|
}
|
|
|
|
return SFG_monsterSprites + index * SFG_TEXTURE_STORE_SIZE;
|
|
}
|
|
|
|
/**
|
|
Says whether given key is currently pressed (down). This should be preferred
|
|
to SFG_keyPressed().
|
|
*/
|
|
uint8_t SFG_keyIsDown(uint8_t key)
|
|
{
|
|
return SFG_game.keyStates[key] != 0;
|
|
}
|
|
|
|
/**
|
|
Says whether given key has been pressed in the current frame.
|
|
*/
|
|
uint8_t SFG_keyJustPressed(uint8_t key)
|
|
{
|
|
return (SFG_game.keyStates[key]) == 1;
|
|
}
|
|
|
|
/**
|
|
Says whether a key is being repeated after being held for certain time.
|
|
*/
|
|
uint8_t SFG_keyRepeated(uint8_t key)
|
|
{
|
|
return
|
|
((SFG_game.keyStates[key] >= SFG_KEY_REPEAT_DELAY_FRAMES) ||
|
|
(SFG_game.keyStates[key] == 255)) &&
|
|
(SFG_game.frame % SFG_KEY_REPEAT_PERIOD_FRAMES == 0);
|
|
}
|
|
|
|
uint16_t SFG_keyRegisters(uint8_t key)
|
|
{
|
|
return SFG_keyJustPressed(key) || SFG_keyRepeated(key);
|
|
}
|
|
|
|
#if SFG_RESOLUTION_SCALEDOWN == 1
|
|
#define SFG_setGamePixel SFG_setPixel
|
|
#else
|
|
|
|
/**
|
|
Sets the game pixel (a pixel that can potentially be bigger than the screen
|
|
pixel).
|
|
*/
|
|
static inline void SFG_setGamePixel(uint16_t x, uint16_t y, uint8_t colorIndex)
|
|
{
|
|
uint16_t screenY = y * SFG_RESOLUTION_SCALEDOWN;
|
|
uint16_t screenX = x * SFG_RESOLUTION_SCALEDOWN;
|
|
|
|
for (uint16_t j = screenY; j < screenY + SFG_RESOLUTION_SCALEDOWN; ++j)
|
|
for (uint16_t i = screenX; i < screenX + SFG_RESOLUTION_SCALEDOWN; ++i)
|
|
SFG_setPixel(i,j,colorIndex);
|
|
}
|
|
#endif
|
|
|
|
void SFG_recomputePLayerDirection()
|
|
{
|
|
SFG_player.camera.direction =
|
|
RCL_wrap(SFG_player.camera.direction,RCL_UNITS_PER_SQUARE);
|
|
|
|
SFG_player.direction = RCL_angleToDirection(SFG_player.camera.direction);
|
|
|
|
SFG_player.direction.x =
|
|
(SFG_player.direction.x * SFG_PLAYER_MOVE_UNITS_PER_FRAME)
|
|
/ RCL_UNITS_PER_SQUARE;
|
|
|
|
SFG_player.direction.y =
|
|
(SFG_player.direction.y * SFG_PLAYER_MOVE_UNITS_PER_FRAME)
|
|
/ RCL_UNITS_PER_SQUARE;
|
|
|
|
SFG_game.backgroundScroll =
|
|
((SFG_player.camera.direction * 8) * SFG_GAME_RESOLUTION_Y)
|
|
/ RCL_UNITS_PER_SQUARE;
|
|
}
|
|
|
|
#if SFG_BACKGROUND_BLUR != 0
|
|
uint8_t SFG_backgroundBlurIndex = 0;
|
|
|
|
static const int8_t SFG_backgroundBlurOffsets[8] =
|
|
{
|
|
0 * SFG_BACKGROUND_BLUR,
|
|
16 * SFG_BACKGROUND_BLUR,
|
|
7 * SFG_BACKGROUND_BLUR,
|
|
17 * SFG_BACKGROUND_BLUR,
|
|
1 * SFG_BACKGROUND_BLUR,
|
|
4 * SFG_BACKGROUND_BLUR,
|
|
15 * SFG_BACKGROUND_BLUR,
|
|
9 * SFG_BACKGROUND_BLUR,
|
|
};
|
|
#endif
|
|
|
|
static inline uint8_t SFG_fogValueDiminish(RCL_Unit depth)
|
|
{
|
|
return depth / SFG_FOG_DIMINISH_STEP;
|
|
}
|
|
|
|
static inline uint8_t
|
|
SFG_getTexelFull(uint8_t textureIndex,RCL_Unit u, RCL_Unit v)
|
|
{
|
|
return
|
|
SFG_getTexel(
|
|
textureIndex != 255 ?
|
|
SFG_currentLevel.textures[textureIndex] :
|
|
(SFG_wallTextures + SFG_currentLevel.levelPointer->doorTextureIndex
|
|
* SFG_TEXTURE_STORE_SIZE), u / 32, v / 32);
|
|
}
|
|
|
|
static inline uint8_t SFG_getTexelAverage(uint8_t textureIndex)
|
|
{
|
|
return
|
|
textureIndex != 255 ?
|
|
SFG_game.textureAverageColors[
|
|
SFG_currentLevel.levelPointer->textureIndices[textureIndex]]
|
|
:
|
|
(
|
|
SFG_game.textureAverageColors[
|
|
SFG_currentLevel.levelPointer->doorTextureIndex]
|
|
+ 1 // to distinguish from normal walls
|
|
);
|
|
}
|
|
|
|
void SFG_pixelFunc(RCL_PixelInfo *pixel)
|
|
{
|
|
uint8_t color;
|
|
uint8_t shadow = 0;
|
|
|
|
if (pixel->isHorizon && pixel->depth > RCL_UNITS_PER_SQUARE * 16)
|
|
{
|
|
color = SFG_TRANSPARENT_COLOR;
|
|
}
|
|
else if (pixel->isWall)
|
|
{
|
|
uint8_t textureIndex =
|
|
pixel->isFloor ?
|
|
(
|
|
((pixel->hit.type & SFG_TILE_PROPERTY_MASK) != SFG_TILE_PROPERTY_DOOR) ?
|
|
(pixel->hit.type & 0x7)
|
|
:
|
|
(
|
|
(pixel->texCoords.y > RCL_UNITS_PER_SQUARE) ?
|
|
(pixel->hit.type & 0x7) : 255
|
|
)
|
|
):
|
|
((pixel->hit.type & 0x38) >> 3);
|
|
|
|
#if SFG_TEXTURE_DISTANCE != 0
|
|
RCL_Unit textureV = pixel->texCoords.y;
|
|
|
|
if ((pixel->hit.type & SFG_TILE_PROPERTY_MASK) ==
|
|
SFG_TILE_PROPERTY_SQUEEZER)
|
|
textureV += pixel->wallHeight;
|
|
#endif
|
|
|
|
color =
|
|
textureIndex != SFG_TILE_TEXTURE_TRANSPARENT ?
|
|
(
|
|
#if SFG_TEXTURE_DISTANCE >= 65535
|
|
SFG_getTexelFull(textureIndex,pixel->texCoords.x,textureV)
|
|
#elif SFG_TEXTURE_DISTANCE == 0
|
|
SFG_getTexelAverage(textureIndex)
|
|
#else
|
|
pixel->depth <= SFG_TEXTURE_DISTANCE ?
|
|
SFG_getTexelFull(textureIndex,pixel->texCoords.x,textureV) :
|
|
SFG_getTexelAverage(textureIndex)
|
|
#endif
|
|
)
|
|
:
|
|
SFG_TRANSPARENT_COLOR;
|
|
|
|
shadow = pixel->hit.direction >> 1;
|
|
}
|
|
else
|
|
{
|
|
color = pixel->isFloor ?
|
|
(SFG_currentLevel.floorColor) :
|
|
(pixel->height < SFG_CEILING_MAX_HEIGHT ?
|
|
SFG_currentLevel.ceilingColor : SFG_TRANSPARENT_COLOR);
|
|
}
|
|
|
|
if (color != SFG_TRANSPARENT_COLOR)
|
|
{
|
|
#if SFG_DITHERED_SHADOW
|
|
uint8_t fogShadow = (pixel->depth * 8) / SFG_FOG_DIMINISH_STEP;
|
|
|
|
uint8_t fogShadowPart = fogShadow & 0x07;
|
|
|
|
fogShadow /= 8;
|
|
|
|
uint8_t xMod4 = pixel->position.x & 0x03;
|
|
uint8_t yMod2 = pixel->position.y & 0x01;
|
|
|
|
shadow +=
|
|
fogShadow + SFG_ditheringPatterns[fogShadowPart * 8 + yMod2 * 4 + xMod4];
|
|
#else
|
|
shadow += SFG_fogValueDiminish(pixel->depth);
|
|
#endif
|
|
|
|
#if SFG_ENABLE_FOG
|
|
color = palette_minusValue(color,shadow);
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
#if SFG_DRAW_LEVEL_BACKGROUND
|
|
color = SFG_getTexel(SFG_backgroundImages +
|
|
SFG_currentLevel.backgroundImage * SFG_TEXTURE_STORE_SIZE,
|
|
SFG_game.backgroundScaleMap[((pixel->position.x
|
|
#if SFG_BACKGROUND_BLUR != 0
|
|
+ SFG_backgroundBlurOffsets[SFG_backgroundBlurIndex]
|
|
#endif
|
|
) * SFG_RAYCASTING_SUBSAMPLE + SFG_game.backgroundScroll) % SFG_GAME_RESOLUTION_Y],
|
|
(SFG_game.backgroundScaleMap[(pixel->position.y // ^ TODO: get rid of mod?
|
|
#if SFG_BACKGROUND_BLUR != 0
|
|
+ SFG_backgroundBlurOffsets[SFG_backgroundBlurIndex + 1]
|
|
#endif
|
|
) % SFG_GAME_RESOLUTION_Y])
|
|
);
|
|
|
|
#if SFG_BACKGROUND_BLUR != 0
|
|
SFG_backgroundBlurIndex = (SFG_backgroundBlurIndex + 1) % 8;
|
|
#endif
|
|
#else
|
|
color = 1;
|
|
#endif
|
|
}
|
|
|
|
#if SFG_RAYCASTING_SUBSAMPLE == 1
|
|
// the other version will probably get optimized to this, but just in case
|
|
SFG_setGamePixel(pixel->position.x,pixel->position.y,color);
|
|
#else
|
|
RCL_Unit screenX = pixel->position.x * SFG_RAYCASTING_SUBSAMPLE;
|
|
|
|
for (int_fast8_t i = 0; i < SFG_RAYCASTING_SUBSAMPLE; ++i)
|
|
{
|
|
SFG_setGamePixel(screenX,pixel->position.y,color);
|
|
screenX++;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
Draws image on screen, with transparency. This is faster than sprite drawing.
|
|
For performance sake drawing near screen edges is not pixel perfect.
|
|
*/
|
|
void SFG_blitImage(
|
|
const uint8_t *image,
|
|
int16_t posX,
|
|
int16_t posY,
|
|
uint8_t scale)
|
|
{
|
|
if (scale == 0)
|
|
return;
|
|
|
|
uint16_t x0 = posX,
|
|
x1,
|
|
y0 = posY,
|
|
y1;
|
|
|
|
uint8_t u0 = 0, v0 = 0;
|
|
|
|
if (posX < 0)
|
|
{
|
|
x0 = 0;
|
|
u0 = (-1 * posX) / scale;
|
|
}
|
|
|
|
posX += scale * SFG_TEXTURE_SIZE;
|
|
|
|
uint16_t limitX = SFG_GAME_RESOLUTION_X - scale;
|
|
uint16_t limitY = SFG_GAME_RESOLUTION_Y - scale;
|
|
|
|
x1 = posX >= 0 ?
|
|
(posX <= limitX ? posX : limitX)
|
|
: 0;
|
|
|
|
if (x1 >= SFG_GAME_RESOLUTION_X)
|
|
x1 = SFG_GAME_RESOLUTION_X - 1;
|
|
|
|
if (posY < 0)
|
|
{
|
|
y0 = 0;
|
|
v0 = (-1 * posY) / scale;
|
|
}
|
|
|
|
posY += scale * SFG_TEXTURE_SIZE;
|
|
|
|
y1 = posY >= 0 ?
|
|
(posY <= limitY ? posY : limitY)
|
|
: 0;
|
|
|
|
if (y1 >= SFG_GAME_RESOLUTION_Y)
|
|
y1 = SFG_GAME_RESOLUTION_Y - 1;
|
|
|
|
uint8_t v = v0;
|
|
|
|
for (uint16_t y = y0; y < y1; y += scale)
|
|
{
|
|
uint8_t u = u0;
|
|
|
|
for (uint16_t x = x0; x < x1; x += scale)
|
|
{
|
|
uint8_t color = SFG_getTexel(image,u,v);
|
|
|
|
if (color != SFG_TRANSPARENT_COLOR)
|
|
{
|
|
uint16_t sY = y;
|
|
|
|
for (uint8_t j = 0; j < scale; ++j)
|
|
{
|
|
uint16_t sX = x;
|
|
|
|
for (uint8_t i = 0; i < scale; ++i)
|
|
{
|
|
SFG_setGamePixel(sX,sY,color);
|
|
sX++;
|
|
}
|
|
|
|
sY++;
|
|
}
|
|
}
|
|
u++;
|
|
}
|
|
v++;
|
|
}
|
|
}
|
|
|
|
void SFG_drawScaledSprite(
|
|
const uint8_t *image,
|
|
int16_t centerX,
|
|
int16_t centerY,
|
|
int16_t size,
|
|
uint8_t minusValue,
|
|
RCL_Unit distance)
|
|
{
|
|
if ((size > SFG_MAX_SPRITE_SIZE) || (size == 0))
|
|
return;
|
|
|
|
uint16_t halfSize = size / 2;
|
|
|
|
int16_t topLeftX = centerX - halfSize;
|
|
int16_t topLeftY = centerY - halfSize;
|
|
|
|
int16_t x0, u0;
|
|
|
|
if (topLeftX < 0)
|
|
{
|
|
u0 = -1 * topLeftX;
|
|
x0 = 0;
|
|
}
|
|
else
|
|
{
|
|
u0 = 0;
|
|
x0 = topLeftX;
|
|
}
|
|
|
|
int16_t x1 = topLeftX + size - 1;
|
|
|
|
if (x1 >= SFG_GAME_RESOLUTION_X)
|
|
x1 = SFG_GAME_RESOLUTION_X - 1;
|
|
|
|
int16_t y0, v0;
|
|
|
|
if (topLeftY < 0)
|
|
{
|
|
v0 = -1 * topLeftY;
|
|
y0 = 0;
|
|
}
|
|
else
|
|
{
|
|
v0 = 0;
|
|
y0 = topLeftY;
|
|
}
|
|
|
|
int16_t y1 = topLeftY + size - 1;
|
|
|
|
if (y1 >= SFG_GAME_RESOLUTION_Y)
|
|
y1 = SFG_GAME_RESOLUTION_Y - 1;
|
|
|
|
if ((x0 > x1) || (y0 > y1) || (u0 >= size) || (v0 >= size)) // outside screen?
|
|
return;
|
|
|
|
int16_t u1 = u0 + (x1 - x0);
|
|
int16_t v1 = v0 + (y1 - y0);
|
|
|
|
// precompute sampling positions:
|
|
|
|
int16_t uMin = RCL_min(u0,u1);
|
|
int16_t vMin = RCL_min(v0,v1);
|
|
int16_t uMax = RCL_max(u0,u1);
|
|
int16_t vMax = RCL_max(v0,v1);
|
|
|
|
int16_t precompFrom = RCL_min(uMin,vMin);
|
|
int16_t precompTo = RCL_max(uMax,vMax);
|
|
|
|
precompFrom = RCL_max(0,precompFrom);
|
|
precompTo = RCL_min(SFG_MAX_SPRITE_SIZE - 1,precompTo);
|
|
|
|
#define PRECOMP_SCALE 512
|
|
|
|
int16_t precompStepScaled = ((SFG_TEXTURE_SIZE) * PRECOMP_SCALE) / size;
|
|
int16_t precompPosScaled = precompFrom * precompStepScaled;
|
|
|
|
for (int16_t i = precompFrom; i <= precompTo; ++i)
|
|
{
|
|
SFG_game.spriteSamplingPoints[i] = precompPosScaled / PRECOMP_SCALE;
|
|
precompPosScaled += precompStepScaled;
|
|
}
|
|
|
|
#undef PRECOMP_SCALE
|
|
|
|
uint8_t zDistance = SFG_RCLUnitToZBuffer(distance);
|
|
|
|
for (int16_t x = x0, u = u0; x <= x1; ++x, ++u)
|
|
{
|
|
if (SFG_game.zBuffer[x] >= zDistance)
|
|
{
|
|
int8_t columnTransparent = 1;
|
|
|
|
for (int16_t y = y0, v = v0; y <= y1; ++y, ++v)
|
|
{
|
|
uint8_t color =
|
|
SFG_getTexel(image,SFG_game.spriteSamplingPoints[u],
|
|
SFG_game.spriteSamplingPoints[v]);
|
|
|
|
if (color != SFG_TRANSPARENT_COLOR)
|
|
{
|
|
#if SFG_DIMINISH_SPRITES
|
|
color = palette_minusValue(color,minusValue);
|
|
#endif
|
|
columnTransparent = 0;
|
|
|
|
SFG_setGamePixel(x,y,color);
|
|
}
|
|
}
|
|
|
|
if (!columnTransparent)
|
|
SFG_game.zBuffer[x] = zDistance;
|
|
}
|
|
}
|
|
}
|
|
|
|
RCL_Unit SFG_texturesAt(int16_t x, int16_t y)
|
|
{
|
|
uint8_t p;
|
|
|
|
SFG_TileDefinition tile =
|
|
SFG_getMapTile(SFG_currentLevel.levelPointer,x,y,&p);
|
|
|
|
return
|
|
SFG_TILE_FLOOR_TEXTURE(tile) | (SFG_TILE_CEILING_TEXTURE(tile) << 3) | p;
|
|
// ^ store both textures (floor and ceiling) and properties in one number
|
|
}
|
|
|
|
RCL_Unit SFG_movingWallHeight
|
|
(
|
|
RCL_Unit low,
|
|
RCL_Unit high,
|
|
uint32_t time
|
|
)
|
|
{
|
|
RCL_Unit height = high - low;
|
|
RCL_Unit halfHeight = height / 2;
|
|
|
|
RCL_Unit sinArg =
|
|
(time * ((SFG_MOVING_WALL_SPEED * RCL_UNITS_PER_SQUARE) / 1000)) / height;
|
|
|
|
return
|
|
low + halfHeight + (RCL_sin(sinArg) * halfHeight) / RCL_UNITS_PER_SQUARE;
|
|
}
|
|
|
|
RCL_Unit SFG_floorHeightAt(int16_t x, int16_t y)
|
|
{
|
|
uint8_t properties;
|
|
|
|
SFG_TileDefinition tile =
|
|
SFG_getMapTile(SFG_currentLevel.levelPointer,x,y,&properties);
|
|
|
|
RCL_Unit doorHeight = 0;
|
|
|
|
if (properties == SFG_TILE_PROPERTY_DOOR)
|
|
{
|
|
for (uint8_t i = 0; i < SFG_currentLevel.doorRecordCount; ++i)
|
|
{
|
|
SFG_DoorRecord *door = &(SFG_currentLevel.doorRecords[i]);
|
|
|
|
if ((door->coords[0] == x) && (door->coords[1] == y))
|
|
{
|
|
doorHeight = door->state & SFG_DOOR_VERTICAL_POSITION_MASK;
|
|
|
|
doorHeight = doorHeight != (0xff & SFG_DOOR_VERTICAL_POSITION_MASK) ?
|
|
doorHeight * SFG_DOOR_HEIGHT_STEP : RCL_UNITS_PER_SQUARE;
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else if (properties == SFG_TILE_PROPERTY_ELEVATOR)
|
|
{
|
|
RCL_Unit height =
|
|
SFG_TILE_FLOOR_HEIGHT(tile) * SFG_WALL_HEIGHT_STEP;
|
|
|
|
return SFG_movingWallHeight(
|
|
height,
|
|
height + SFG_TILE_CEILING_HEIGHT(tile) * SFG_WALL_HEIGHT_STEP,
|
|
SFG_game.frameTime - SFG_currentLevel.timeStart);
|
|
}
|
|
|
|
return SFG_TILE_FLOOR_HEIGHT(tile) * SFG_WALL_HEIGHT_STEP - doorHeight;
|
|
}
|
|
|
|
/**
|
|
Like SFG_floorCollisionHeightAt, but takes into account colliding items on
|
|
the map, so the squares that have these items are higher. The former function
|
|
is for rendering, this one is for collision checking.
|
|
*/
|
|
RCL_Unit SFG_floorCollisionHeightAt(int16_t x, int16_t y)
|
|
{
|
|
return SFG_floorHeightAt(x,y) +
|
|
SFG_getItemCollisionMapBit(x,y) * RCL_UNITS_PER_SQUARE;
|
|
}
|
|
|
|
void SFG_getPlayerWeaponInfo(
|
|
uint8_t *ammoType, uint8_t *projectileCount, uint8_t *canShoot)
|
|
{
|
|
*ammoType = SFG_weaponAmmo(SFG_player.weapon);
|
|
|
|
*projectileCount = SFG_GET_WEAPON_PROJECTILE_COUNT(SFG_player.weapon);
|
|
|
|
#if SFG_INFINITE_AMMO
|
|
*canShoot = 1;
|
|
#else
|
|
*canShoot =
|
|
(*ammoType == SFG_AMMO_NONE ||
|
|
SFG_player.ammo[*ammoType] >= *projectileCount);
|
|
#endif
|
|
}
|
|
|
|
void SFG_playerRotateWeapon(uint8_t next)
|
|
{
|
|
uint8_t initialWeapon = SFG_player.weapon;
|
|
int8_t increment = next ? 1 : -1;
|
|
|
|
while (1)
|
|
{
|
|
SFG_player.weapon =
|
|
(SFG_WEAPONS_TOTAL + SFG_player.weapon + increment) % SFG_WEAPONS_TOTAL;
|
|
|
|
if (SFG_player.weapon == initialWeapon)
|
|
break;
|
|
|
|
uint8_t ammo, projectileCount, canShoot;
|
|
|
|
SFG_getPlayerWeaponInfo(&ammo,&projectileCount,&canShoot);
|
|
|
|
if (canShoot)
|
|
break;
|
|
}
|
|
}
|
|
|
|
void SFG_initPlayer()
|
|
{
|
|
RCL_initCamera(&SFG_player.camera);
|
|
|
|
SFG_player.camera.resolution.x =
|
|
SFG_GAME_RESOLUTION_X / SFG_RAYCASTING_SUBSAMPLE;
|
|
|
|
SFG_player.camera.resolution.y = SFG_GAME_RESOLUTION_Y - SFG_HUD_BAR_HEIGHT;
|
|
|
|
SFG_player.camera.position.x = RCL_UNITS_PER_SQUARE / 2 +
|
|
SFG_currentLevel.levelPointer->playerStart[0] * RCL_UNITS_PER_SQUARE;
|
|
|
|
SFG_player.camera.position.y = RCL_UNITS_PER_SQUARE / 2 +
|
|
SFG_currentLevel.levelPointer->playerStart[1] * RCL_UNITS_PER_SQUARE;
|
|
|
|
SFG_player.squarePosition[0] =
|
|
SFG_player.camera.position.x / RCL_UNITS_PER_SQUARE;
|
|
|
|
SFG_player.squarePosition[1] =
|
|
SFG_player.camera.position.y / RCL_UNITS_PER_SQUARE;
|
|
|
|
SFG_player.camera.height =
|
|
SFG_floorHeightAt(
|
|
SFG_currentLevel.levelPointer->playerStart[0],
|
|
SFG_currentLevel.levelPointer->playerStart[1]) +
|
|
RCL_CAMERA_COLL_HEIGHT_BELOW;
|
|
|
|
SFG_player.camera.direction =
|
|
SFG_currentLevel.levelPointer->playerStart[2] *
|
|
(RCL_UNITS_PER_SQUARE / 256);
|
|
|
|
SFG_recomputePLayerDirection();
|
|
|
|
SFG_player.previousVerticalSpeed = 0;
|
|
|
|
SFG_player.headBobFrame = 0;
|
|
|
|
SFG_player.weapon = SFG_WEAPON_KNIFE;
|
|
|
|
SFG_player.weaponCooldownFrames = 0;
|
|
SFG_player.lastHurtFrame = SFG_game.frame;
|
|
SFG_player.lastItemTakenFrame = SFG_game.frame;
|
|
|
|
SFG_player.health = SFG_PLAYER_START_HEALTH;
|
|
|
|
SFG_player.previousWeaponDirection = 0;
|
|
|
|
SFG_player.cards =
|
|
#if SFG_UNLOCK_DOOR
|
|
0x07;
|
|
#else
|
|
0;
|
|
#endif
|
|
|
|
SFG_player.justTeleported = 0;
|
|
|
|
for (uint8_t i = 0; i < SFG_AMMO_TOTAL; ++i)
|
|
SFG_player.ammo[i] = 0;
|
|
}
|
|
|
|
RCL_Unit SFG_ceilingHeightAt(int16_t x, int16_t y)
|
|
{
|
|
uint8_t properties;
|
|
SFG_TileDefinition tile =
|
|
SFG_getMapTile(SFG_currentLevel.levelPointer,x,y,&properties);
|
|
|
|
if (properties == SFG_TILE_PROPERTY_ELEVATOR)
|
|
return SFG_CEILING_MAX_HEIGHT;
|
|
|
|
uint8_t height = SFG_TILE_CEILING_HEIGHT(tile);
|
|
|
|
return properties != SFG_TILE_PROPERTY_SQUEEZER ?
|
|
(
|
|
height != SFG_TILE_CEILING_MAX_HEIGHT ?
|
|
((SFG_TILE_FLOOR_HEIGHT(tile) + height) * SFG_WALL_HEIGHT_STEP) :
|
|
SFG_CEILING_MAX_HEIGHT
|
|
) :
|
|
SFG_movingWallHeight(
|
|
SFG_TILE_FLOOR_HEIGHT(tile) * SFG_WALL_HEIGHT_STEP,
|
|
(SFG_TILE_CEILING_HEIGHT(tile) + SFG_TILE_FLOOR_HEIGHT(tile))
|
|
* SFG_WALL_HEIGHT_STEP,
|
|
SFG_game.frameTime - SFG_currentLevel.timeStart);
|
|
}
|
|
|
|
/**
|
|
Gets sprite (image and sprite size) for given item.
|
|
*/
|
|
void SFG_getItemSprite(
|
|
uint8_t elementType, const uint8_t **sprite, uint8_t *spriteSize)
|
|
{
|
|
*spriteSize = 0;
|
|
*sprite = SFG_itemSprites + (elementType - 1) * SFG_TEXTURE_STORE_SIZE;
|
|
|
|
switch (elementType)
|
|
{
|
|
case SFG_LEVEL_ELEMENT_TREE:
|
|
case SFG_LEVEL_ELEMENT_RUIN:
|
|
case SFG_LEVEL_ELEMENT_LAMP:
|
|
case SFG_LEVEL_ELEMENT_TELEPORTER:
|
|
*spriteSize = 2;
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_TERMINAL:
|
|
*spriteSize = 1;
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_FINISH:
|
|
case SFG_LEVEL_ELEMENT_COLUMN:
|
|
*spriteSize = 3;
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_CARD0:
|
|
case SFG_LEVEL_ELEMENT_CARD1:
|
|
case SFG_LEVEL_ELEMENT_CARD2:
|
|
*sprite = SFG_itemSprites +
|
|
(SFG_LEVEL_ELEMENT_CARD0 - 1) * SFG_TEXTURE_STORE_SIZE;
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_BLOCKER:
|
|
*sprite = 0;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Says whether given item type collides, i.e. stops player from moving.
|
|
*/
|
|
uint8_t SFG_itemCollides(uint8_t elementType)
|
|
{
|
|
return
|
|
elementType == SFG_LEVEL_ELEMENT_BARREL ||
|
|
elementType == SFG_LEVEL_ELEMENT_TREE ||
|
|
elementType == SFG_LEVEL_ELEMENT_TERMINAL ||
|
|
elementType == SFG_LEVEL_ELEMENT_COLUMN ||
|
|
elementType == SFG_LEVEL_ELEMENT_RUIN ||
|
|
elementType == SFG_LEVEL_ELEMENT_BLOCKER ||
|
|
elementType == SFG_LEVEL_ELEMENT_LAMP;
|
|
}
|
|
|
|
void SFG_setGameState(uint8_t state)
|
|
{
|
|
SFG_LOG("changing game state");
|
|
SFG_game.state = state;
|
|
SFG_game.stateChangeTime = SFG_game.frameTime;
|
|
}
|
|
|
|
void SFG_setAndInitLevel(uint8_t levelNumber)
|
|
{
|
|
SFG_LOG("setting and initializing level");
|
|
|
|
const SFG_Level *level;
|
|
|
|
#if SFG_ARDUINO
|
|
memcpy_P(&SFG_ramLevel,SFG_levels[levelNumber],sizeof(SFG_Level));
|
|
level = &SFG_ramLevel;
|
|
#else
|
|
level = SFG_levels[levelNumber];
|
|
#endif
|
|
|
|
SFG_game.currentRandom = 0;
|
|
|
|
if (SFG_game.saved != SFG_CANT_SAVE)
|
|
SFG_game.saved = 0;
|
|
|
|
SFG_currentLevel.levelNumber = levelNumber;
|
|
SFG_currentLevel.monstersDead = 0;
|
|
SFG_currentLevel.backgroundImage = level->backgroundImage;
|
|
SFG_currentLevel.levelPointer = level;
|
|
SFG_currentLevel.bossCount = 0;
|
|
SFG_currentLevel.floorColor = level->floorColor;
|
|
SFG_currentLevel.ceilingColor = level->ceilingColor;
|
|
SFG_currentLevel.completionTime10sOfS = 0;
|
|
|
|
for (uint8_t i = 0; i < 7; ++i)
|
|
SFG_currentLevel.textures[i] =
|
|
SFG_wallTextures + level->textureIndices[i] * SFG_TEXTURE_STORE_SIZE;
|
|
|
|
SFG_LOG("initializing doors");
|
|
|
|
SFG_currentLevel.checkedDoorIndex = 0;
|
|
SFG_currentLevel.doorRecordCount = 0;
|
|
SFG_currentLevel.projectileRecordCount = 0;
|
|
SFG_currentLevel.teleporterCount = 0;
|
|
SFG_currentLevel.mapRevealMask =
|
|
#if SFG_REVEAL_MAP
|
|
0xffff;
|
|
#else
|
|
0;
|
|
#endif
|
|
|
|
for (uint8_t j = 0; j < SFG_MAP_SIZE; ++j)
|
|
{
|
|
for (uint8_t i = 0; i < SFG_MAP_SIZE; ++i)
|
|
{
|
|
uint8_t properties;
|
|
|
|
SFG_getMapTile(level,i,j,&properties);
|
|
|
|
if ((properties & SFG_TILE_PROPERTY_MASK) == SFG_TILE_PROPERTY_DOOR)
|
|
{
|
|
SFG_DoorRecord *d =
|
|
&(SFG_currentLevel.doorRecords[SFG_currentLevel.doorRecordCount]);
|
|
|
|
d->coords[0] = i;
|
|
d->coords[1] = j;
|
|
d->state = 0x00;
|
|
|
|
SFG_currentLevel.doorRecordCount++;
|
|
}
|
|
|
|
if (SFG_currentLevel.doorRecordCount >= SFG_MAX_DOORS)
|
|
{
|
|
SFG_LOG("warning: too many doors!");
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (SFG_currentLevel.doorRecordCount >= SFG_MAX_DOORS)
|
|
break;
|
|
}
|
|
|
|
SFG_LOG("initializing level elements");
|
|
|
|
SFG_currentLevel.itemRecordCount = 0;
|
|
SFG_currentLevel.checkedItemIndex = 0;
|
|
|
|
SFG_currentLevel.monsterRecordCount = 0;
|
|
SFG_currentLevel.checkedMonsterIndex = 0;
|
|
|
|
SFG_MonsterRecord *monster;
|
|
|
|
for (uint16_t i = 0; i < ((SFG_MAP_SIZE * SFG_MAP_SIZE) / 8); ++i)
|
|
SFG_currentLevel.itemCollisionMap[i] = 0;
|
|
|
|
for (uint8_t i = 0; i < SFG_MAX_LEVEL_ELEMENTS; ++i)
|
|
{
|
|
const SFG_LevelElement *e = &(SFG_currentLevel.levelPointer->elements[i]);
|
|
|
|
if (e->type != SFG_LEVEL_ELEMENT_NONE)
|
|
{
|
|
if (SFG_LEVEL_ELEMENT_TYPE_IS_MOSTER(e->type))
|
|
{
|
|
monster =
|
|
&(SFG_currentLevel.monsterRecords[SFG_currentLevel.monsterRecordCount]);
|
|
|
|
monster->stateType = (SFG_MONSTER_TYPE_TO_INDEX(e->type) << 4)
|
|
| SFG_MONSTER_STATE_INACTIVE;
|
|
|
|
monster->health =
|
|
SFG_GET_MONSTER_MAX_HEALTH(SFG_MONSTER_TYPE_TO_INDEX(e->type));
|
|
|
|
monster->coords[0] = e->coords[0] * 4 + 2;
|
|
monster->coords[1] = e->coords[1] * 4 + 2;
|
|
|
|
SFG_currentLevel.monsterRecordCount++;
|
|
|
|
if (e->type == SFG_LEVEL_ELEMENT_MONSTER_ENDER)
|
|
SFG_currentLevel.bossCount++;
|
|
}
|
|
else if ((e->type < SFG_LEVEL_ELEMENT_LOCK0) ||
|
|
(e->type > SFG_LEVEL_ELEMENT_LOCK2))
|
|
{
|
|
SFG_currentLevel.itemRecords[SFG_currentLevel.itemRecordCount] = i;
|
|
SFG_currentLevel.itemRecordCount++;
|
|
|
|
if (e->type == SFG_LEVEL_ELEMENT_TELEPORTER)
|
|
SFG_currentLevel.teleporterCount++;
|
|
|
|
if (SFG_itemCollides(e->type))
|
|
SFG_setItemCollisionMapBit(e->coords[0],e->coords[1],1);
|
|
}
|
|
else
|
|
{
|
|
uint8_t properties;
|
|
|
|
SFG_getMapTile(level,e->coords[0],e->coords[1],&properties);
|
|
|
|
if ((properties & SFG_TILE_PROPERTY_MASK) == SFG_TILE_PROPERTY_DOOR)
|
|
{
|
|
// find the door record and lock the door:
|
|
for (uint16_t j = 0; j < SFG_currentLevel.doorRecordCount; ++j)
|
|
{
|
|
SFG_DoorRecord *d = &(SFG_currentLevel.doorRecords[j]);
|
|
|
|
if (d->coords[0] == e->coords[0] && d->coords[1] == e->coords[1])
|
|
{
|
|
d->state |= (e->type - SFG_LEVEL_ELEMENT_LOCK0 + 1) << 6;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
SFG_LOG("warning: lock not put on door tile!");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
SFG_currentLevel.timeStart = SFG_game.frameTime;
|
|
SFG_currentLevel.frameStart = SFG_game.frame;
|
|
|
|
SFG_game.spriteAnimationFrame = 0;
|
|
|
|
SFG_initPlayer();
|
|
SFG_setGameState(SFG_GAME_STATE_LEVEL_START);
|
|
SFG_setMusic(SFG_MUSIC_NEXT);
|
|
SFG_processEvent(SFG_EVENT_LEVEL_STARTS,levelNumber);
|
|
}
|
|
|
|
void SFG_init()
|
|
{
|
|
SFG_LOG("initializing game")
|
|
|
|
SFG_game.frame = 0;
|
|
SFG_game.frameTime = 0;
|
|
SFG_game.currentRandom = 0;
|
|
SFG_game.continues = 1;
|
|
|
|
RCL_initRayConstraints(&SFG_game.rayConstraints);
|
|
SFG_game.rayConstraints.maxHits = SFG_RAYCASTING_MAX_HITS;
|
|
SFG_game.rayConstraints.maxSteps = SFG_RAYCASTING_MAX_STEPS;
|
|
|
|
SFG_game.antiSpam = 0;
|
|
|
|
SFG_LOG("computing average texture colors")
|
|
|
|
for (uint8_t i = 0; i < SFG_WALL_TEXTURE_COUNT; ++i)
|
|
{
|
|
/** For simplicity, we round colors so that there is only 64 of them, and
|
|
we count them up to 256. */
|
|
|
|
uint8_t colorHistogram[64];
|
|
|
|
for (uint8_t j = 0; j < 64; ++j)
|
|
colorHistogram[j] = 0;
|
|
|
|
for (uint8_t y = 0; y < SFG_TEXTURE_SIZE; ++y)
|
|
for (uint8_t x = 0; x < SFG_TEXTURE_SIZE; ++x)
|
|
{
|
|
uint8_t color =
|
|
SFG_getTexel(SFG_wallTextures + i * SFG_TEXTURE_STORE_SIZE,x,y) / 4;
|
|
|
|
colorHistogram[color] += 1;
|
|
|
|
if (colorHistogram[color] == 255)
|
|
break;
|
|
}
|
|
|
|
uint8_t maxIndex = 0;
|
|
|
|
for (uint8_t j = 0; j < 64; ++j)
|
|
{
|
|
if (colorHistogram[j] == 255)
|
|
{
|
|
maxIndex = j;
|
|
break;
|
|
}
|
|
|
|
if (colorHistogram[j] > colorHistogram[maxIndex])
|
|
maxIndex = j;
|
|
}
|
|
|
|
SFG_game.textureAverageColors[i] = maxIndex * 4;
|
|
}
|
|
|
|
for (uint16_t i = 0; i < SFG_GAME_RESOLUTION_Y; ++i)
|
|
SFG_game.backgroundScaleMap[i] =
|
|
(i * SFG_TEXTURE_SIZE) / SFG_GAME_RESOLUTION_Y;
|
|
|
|
for (uint8_t i = 0; i < SFG_KEY_COUNT; ++i)
|
|
SFG_game.keyStates[i] = 0;
|
|
|
|
SFG_game.backgroundScroll = 0;
|
|
SFG_currentLevel.levelPointer = 0;
|
|
SFG_game.selectedMenuItem = 0;
|
|
SFG_game.selectedLevel = 0;
|
|
SFG_game.settings = 0x03;
|
|
SFG_game.saved = 0;
|
|
|
|
// create a default save data:
|
|
|
|
for (uint16_t i = 0; i < SFG_SAVE_SIZE; ++i)
|
|
SFG_game.save[i] = 0;
|
|
|
|
SFG_game.save[0] = 0;
|
|
SFG_game.save[1] = SFG_game.settings;
|
|
|
|
SFG_gameLoad(); // attempt to load settings
|
|
|
|
if (SFG_game.saved != SFG_CANT_SAVE)
|
|
{
|
|
SFG_LOG("settings loaded");
|
|
SFG_game.settings = SFG_game.save[1];
|
|
}
|
|
else
|
|
{
|
|
SFG_LOG("saving/loading not possible");
|
|
SFG_game.save[0] = (SFG_NUMBER_OF_LEVELS - 1) | 0xf0; // revealed all levels
|
|
}
|
|
|
|
SFG_setMusic((SFG_game.settings & 0x02) ?
|
|
SFG_MUSIC_TURN_ON : SFG_MUSIC_TURN_OFF);
|
|
|
|
#if SFG_START_LEVEL == 0
|
|
SFG_setGameState(SFG_GAME_STATE_INIT);
|
|
#else
|
|
SFG_setAndInitLevel(SFG_START_LEVEL - 1);
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
Adds new projectile to the current level, return 1 if added, 0 if not (max
|
|
count reached).
|
|
*/
|
|
uint8_t SFG_createProjectile(SFG_ProjectileRecord projectile)
|
|
{
|
|
if (SFG_currentLevel.projectileRecordCount >= SFG_MAX_PROJECTILES)
|
|
return 0;
|
|
|
|
SFG_currentLevel.projectileRecords[SFG_currentLevel.projectileRecordCount] =
|
|
projectile;
|
|
|
|
SFG_currentLevel.projectileRecordCount++;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
Launches projectile of given type from given position in given direction
|
|
(has to be normalized), with given offset (so as to not collide with the
|
|
shooting entity). Returns the same value as SFG_createProjectile.
|
|
*/
|
|
uint8_t SFG_launchProjectile(
|
|
uint8_t type,
|
|
RCL_Vector2D shootFrom,
|
|
RCL_Unit shootFromHeight,
|
|
RCL_Vector2D direction,
|
|
RCL_Unit verticalSpeed,
|
|
RCL_Unit offsetDistance
|
|
)
|
|
{
|
|
if (type == SFG_PROJECTILE_NONE)
|
|
return 0;
|
|
|
|
SFG_ProjectileRecord p;
|
|
|
|
p.type = type;
|
|
p.doubleFramesToLive =
|
|
RCL_nonZero(SFG_GET_PROJECTILE_FRAMES_TO_LIVE(type) / 2);
|
|
|
|
p.position[0] =
|
|
shootFrom.x + (direction.x * offsetDistance) / RCL_UNITS_PER_SQUARE;
|
|
p.position[1] =
|
|
shootFrom.y + (direction.y * offsetDistance) / RCL_UNITS_PER_SQUARE;
|
|
p.position[2] = shootFromHeight;
|
|
|
|
p.direction[0] =
|
|
(direction.x * SFG_GET_PROJECTILE_SPEED_UPS(type)) / RCL_UNITS_PER_SQUARE;
|
|
p.direction[1] =
|
|
(direction.y * SFG_GET_PROJECTILE_SPEED_UPS(type)) / RCL_UNITS_PER_SQUARE;
|
|
p.direction[2] = verticalSpeed;
|
|
|
|
return SFG_createProjectile(p);
|
|
}
|
|
|
|
/**
|
|
Pushes a given position away from a center by given distance, with collisions.
|
|
Returns 1 if push away happened, otherwise 0.
|
|
*/
|
|
uint8_t SFG_pushAway(
|
|
RCL_Unit pos[3],
|
|
RCL_Unit centerX,
|
|
RCL_Unit centerY,
|
|
RCL_Unit preferredDirection,
|
|
RCL_Unit distance)
|
|
{
|
|
RCL_Vector2D fromCenter;
|
|
|
|
fromCenter.x = pos[0] - centerX;
|
|
fromCenter.y = pos[1] - centerY;
|
|
|
|
RCL_Unit l = RCL_len(fromCenter);
|
|
|
|
if (l < 128)
|
|
{
|
|
fromCenter = RCL_angleToDirection(preferredDirection);
|
|
l = RCL_UNITS_PER_SQUARE;
|
|
}
|
|
|
|
RCL_Vector2D offset;
|
|
|
|
offset.x = (fromCenter.x * distance) / l;
|
|
offset.y = (fromCenter.y * distance) / l;
|
|
|
|
RCL_Camera c;
|
|
|
|
RCL_initCamera(&c);
|
|
|
|
c.position.x = pos[0];
|
|
c.position.y = pos[1];
|
|
c.height = pos[2];
|
|
|
|
RCL_moveCameraWithCollision(&c,offset,0,SFG_floorCollisionHeightAt,
|
|
SFG_ceilingHeightAt,1,1);
|
|
|
|
pos[0] = c.position.x;
|
|
pos[1] = c.position.y;
|
|
pos[2] = c.height;
|
|
|
|
return 1;
|
|
}
|
|
|
|
uint8_t SFG_pushPlayerAway(
|
|
RCL_Unit centerX, RCL_Unit centerY, RCL_Unit distance)
|
|
{
|
|
RCL_Unit p[3];
|
|
|
|
p[0] = SFG_player.camera.position.x;
|
|
p[1] = SFG_player.camera.position.y;
|
|
p[2] = SFG_player.camera.height;
|
|
|
|
uint8_t result = SFG_pushAway(p,centerX,centerY,
|
|
SFG_player.camera.direction - RCL_UNITS_PER_SQUARE / 2,
|
|
distance);
|
|
|
|
SFG_player.camera.position.x = p[0];
|
|
SFG_player.camera.position.y = p[1];
|
|
SFG_player.camera.height = p[2];
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
Helper function to resolve collision with level element. The function supposes
|
|
the collision already does happen and only resolves it. Returns adjusted move
|
|
offset.
|
|
*/
|
|
RCL_Vector2D SFG_resolveCollisionWithElement(
|
|
RCL_Vector2D position, RCL_Vector2D moveOffset, RCL_Vector2D elementPos)
|
|
{
|
|
RCL_Unit dx = RCL_abs(elementPos.x - position.x);
|
|
RCL_Unit dy = RCL_abs(elementPos.y - position.y);
|
|
|
|
if (dx > dy)
|
|
{
|
|
// colliding from left/right
|
|
|
|
if ((moveOffset.x > 0) == (position.x < elementPos.x))
|
|
moveOffset.x = 0;
|
|
// ^ only stop if heading towards element, to avoid getting stuck
|
|
}
|
|
else
|
|
{
|
|
// colliding from up/down
|
|
|
|
if ((moveOffset.y > 0) == (position.y < elementPos.y))
|
|
moveOffset.y = 0;
|
|
}
|
|
|
|
return moveOffset;
|
|
}
|
|
|
|
/**
|
|
Adds or substracts player's health during the playing state due to taking
|
|
damage (negative value) or getting healed. Negative value will be corrected by
|
|
SFG_PLAYER_DAMAGE_MULTIPLIER in this function.
|
|
*/
|
|
void SFG_playerChangeHealth(int8_t healthAdd)
|
|
{
|
|
if (SFG_game.state != SFG_GAME_STATE_PLAYING)
|
|
return; // don't hurt during level starting phase
|
|
|
|
if (healthAdd < 0)
|
|
{
|
|
healthAdd =
|
|
RCL_min(-1,
|
|
(((RCL_Unit) healthAdd) * SFG_PLAYER_DAMAGE_MULTIPLIER) /
|
|
RCL_UNITS_PER_SQUARE);
|
|
|
|
SFG_player.lastHurtFrame = SFG_game.frame;
|
|
SFG_processEvent(SFG_EVENT_VIBRATE,0);
|
|
SFG_processEvent(SFG_EVENT_PLAYER_HURT,-1 * healthAdd);
|
|
}
|
|
|
|
int16_t health = SFG_player.health;
|
|
health += healthAdd;
|
|
health = RCL_clamp(health,0,SFG_PLAYER_MAX_HEALTH);
|
|
|
|
SFG_player.health = health;
|
|
}
|
|
|
|
uint8_t SFG_distantSoundVolume(RCL_Unit x, RCL_Unit y, RCL_Unit z)
|
|
{
|
|
RCL_Unit distance = SFG_taxicabDistance(x,y,z,
|
|
SFG_player.camera.position.x,
|
|
SFG_player.camera.position.y,
|
|
SFG_player.camera.height);
|
|
|
|
if (distance >= SFG_SFX_MAX_DISTANCE)
|
|
return 0;
|
|
|
|
uint32_t result = 255 - (distance * 255) / SFG_SFX_MAX_DISTANCE;
|
|
|
|
return (result * result) / 256;
|
|
}
|
|
|
|
/**
|
|
Same as SFG_playerChangeHealth but for monsters.
|
|
*/
|
|
void SFG_monsterChangeHealth(SFG_MonsterRecord *monster, int8_t healthAdd)
|
|
{
|
|
int16_t health = monster->health;
|
|
|
|
health += healthAdd;
|
|
health = RCL_clamp(health,0,255);
|
|
monster->health = health;
|
|
|
|
if (healthAdd < 0)
|
|
{
|
|
// play hurt sound
|
|
|
|
uint8_t volume = SFG_distantSoundVolume(
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[0]),
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[1]),
|
|
SFG_floorHeightAt(
|
|
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[0]),
|
|
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[1])));
|
|
|
|
SFG_playGameSound(5,volume);
|
|
|
|
if (monster->health == 0)
|
|
SFG_playGameSound(2,volume);
|
|
}
|
|
}
|
|
|
|
void SFG_removeItem(uint8_t index)
|
|
{
|
|
SFG_LOG("removing item");
|
|
|
|
for (uint16_t j = index; j < SFG_currentLevel.itemRecordCount - 1; ++j)
|
|
SFG_currentLevel.itemRecords[j] =
|
|
SFG_currentLevel.itemRecords[j + 1];
|
|
|
|
SFG_currentLevel.itemRecordCount--;
|
|
}
|
|
|
|
/**
|
|
Helper function, returns a pointer to level element representing item with
|
|
given index, but only if the item is active (otherwise 0 is returned).
|
|
*/
|
|
static inline const SFG_LevelElement *SFG_getActiveItemElement(uint8_t index)
|
|
{
|
|
SFG_ItemRecord item = SFG_currentLevel.itemRecords[index];
|
|
|
|
if ((item & SFG_ITEM_RECORD_ACTIVE_MASK) == 0)
|
|
return 0;
|
|
|
|
return &(SFG_currentLevel.levelPointer->elements[item &
|
|
~SFG_ITEM_RECORD_ACTIVE_MASK]);
|
|
}
|
|
|
|
static inline const SFG_LevelElement *SFG_getLevelElement(uint8_t index)
|
|
{
|
|
SFG_ItemRecord item = SFG_currentLevel.itemRecords[index];
|
|
|
|
return &(SFG_currentLevel.levelPointer->elements[item &
|
|
~SFG_ITEM_RECORD_ACTIVE_MASK]);
|
|
}
|
|
|
|
void SFG_createExplosion(RCL_Unit, RCL_Unit, RCL_Unit); // forward decl
|
|
|
|
void SFG_explodeBarrel(uint8_t itemIndex, RCL_Unit x, RCL_Unit y, RCL_Unit z)
|
|
{
|
|
const SFG_LevelElement *e = SFG_getLevelElement(itemIndex);
|
|
SFG_setItemCollisionMapBit(e->coords[0],e->coords[1],0);
|
|
SFG_removeItem(itemIndex);
|
|
SFG_createExplosion(x,y,z);
|
|
}
|
|
|
|
void SFG_createExplosion(RCL_Unit x, RCL_Unit y, RCL_Unit z)
|
|
{
|
|
SFG_ProjectileRecord explosion;
|
|
|
|
SFG_playGameSound(2,SFG_distantSoundVolume(x,y,z));
|
|
SFG_processEvent(SFG_EVENT_EXPLOSION,0);
|
|
|
|
explosion.type = SFG_PROJECTILE_EXPLOSION;
|
|
|
|
explosion.position[0] = x;
|
|
explosion.position[1] = y;
|
|
explosion.position[2] = z;
|
|
|
|
explosion.direction[0] = 0;
|
|
explosion.direction[1] = 0;
|
|
explosion.direction[2] = 0;
|
|
|
|
explosion.doubleFramesToLive = RCL_nonZero(
|
|
SFG_GET_PROJECTILE_FRAMES_TO_LIVE(SFG_PROJECTILE_EXPLOSION) / 2);
|
|
|
|
SFG_createProjectile(explosion);
|
|
|
|
uint8_t damage = SFG_getDamageValue(SFG_WEAPON_FIRE_TYPE_FIREBALL);
|
|
|
|
if (SFG_taxicabDistance(x,y,z,SFG_player.camera.position.x,
|
|
SFG_player.camera.position.y,SFG_player.camera.height)
|
|
<= SFG_EXPLOSION_RADIUS)
|
|
{
|
|
SFG_playerChangeHealth(-1 * damage);
|
|
SFG_pushPlayerAway(x,y,SFG_EXPLOSION_PUSH_AWAY_DISTANCE);
|
|
}
|
|
|
|
for (uint16_t i = 0; i < SFG_currentLevel.monsterRecordCount; ++i)
|
|
{
|
|
SFG_MonsterRecord *monster = &(SFG_currentLevel.monsterRecords[i]);
|
|
|
|
uint16_t state = SFG_MR_STATE(*monster);
|
|
|
|
if ((state == SFG_MONSTER_STATE_INACTIVE) ||
|
|
(state == SFG_MONSTER_STATE_DEAD))
|
|
continue;
|
|
|
|
RCL_Unit monsterHeight =
|
|
SFG_floorHeightAt(
|
|
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[0]),
|
|
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[1]))
|
|
+ RCL_UNITS_PER_SQUARE / 2;
|
|
|
|
if (SFG_taxicabDistance(
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[0]),
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[1]),monsterHeight,
|
|
x,y,z) <= SFG_EXPLOSION_RADIUS)
|
|
{
|
|
SFG_monsterChangeHealth(monster,
|
|
-1 * SFG_getDamageValue(SFG_WEAPON_FIRE_TYPE_FIREBALL));
|
|
}
|
|
}
|
|
|
|
// explode nearby barrels
|
|
|
|
if (damage >= SFG_BARREL_EXPLOSION_DAMAGE_THRESHOLD)
|
|
for (uint16_t i = 0; i < SFG_currentLevel.itemRecordCount; ++i)
|
|
{
|
|
SFG_ItemRecord item = SFG_currentLevel.itemRecords[i];
|
|
|
|
/* We DON'T check just active barrels but all, otherwise it looks weird
|
|
that out of sight barrels in a line didn't explode.*/
|
|
|
|
SFG_LevelElement element = SFG_ITEM_RECORD_LEVEL_ELEMENT(item);
|
|
|
|
if (element.type != SFG_LEVEL_ELEMENT_BARREL)
|
|
continue;
|
|
|
|
RCL_Unit elementX =
|
|
element.coords[0] * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 2;
|
|
|
|
RCL_Unit elementY =
|
|
element.coords[1] * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 2;
|
|
|
|
RCL_Unit elementHeight =
|
|
SFG_floorHeightAt(element.coords[0],element.coords[1]);
|
|
|
|
if (SFG_taxicabDistance(
|
|
x,y,z,elementX,elementY,elementHeight) <= SFG_EXPLOSION_RADIUS)
|
|
{
|
|
SFG_explodeBarrel(i,elementX,elementY,elementHeight);
|
|
i--;
|
|
}
|
|
}
|
|
}
|
|
|
|
void SFG_createDust(RCL_Unit x, RCL_Unit y, RCL_Unit z)
|
|
{
|
|
SFG_ProjectileRecord dust;
|
|
|
|
dust.type = SFG_PROJECTILE_DUST;
|
|
|
|
dust.position[0] = x;
|
|
dust.position[1] = y;
|
|
dust.position[2] = z;
|
|
|
|
dust.direction[0] = 0;
|
|
dust.direction[1] = 0;
|
|
dust.direction[2] = 0;
|
|
|
|
dust.doubleFramesToLive =
|
|
RCL_nonZero(SFG_GET_PROJECTILE_FRAMES_TO_LIVE(SFG_PROJECTILE_DUST) / 2);
|
|
|
|
SFG_createProjectile(dust);
|
|
}
|
|
|
|
void SFG_getMonsterWorldPosition(SFG_MonsterRecord *monster, RCL_Unit *x,
|
|
RCL_Unit *y, RCL_Unit *z)
|
|
{
|
|
*x = SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[0]);
|
|
*y = SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[1]);
|
|
*z = SFG_floorHeightAt(
|
|
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[0]),
|
|
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[1]))
|
|
+ RCL_UNITS_PER_SQUARE / 2;
|
|
}
|
|
|
|
void SFG_monsterPerformAI(SFG_MonsterRecord *monster)
|
|
{
|
|
uint8_t state = SFG_MR_STATE(*monster);
|
|
uint8_t type = SFG_MR_TYPE(*monster);
|
|
uint8_t monsterNumber = SFG_MONSTER_TYPE_TO_INDEX(type);
|
|
uint8_t attackType = SFG_GET_MONSTER_ATTACK_TYPE(monsterNumber);
|
|
|
|
int8_t coordAdd[2];
|
|
|
|
coordAdd[0] = 0;
|
|
coordAdd[1] = 0;
|
|
|
|
uint8_t notRanged =
|
|
(attackType == SFG_MONSTER_ATTACK_MELEE) ||
|
|
(attackType == SFG_MONSTER_ATTACK_EXPLODE);
|
|
|
|
uint8_t monsterSquare[2] =
|
|
{
|
|
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[0]),
|
|
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[1])
|
|
};
|
|
|
|
RCL_Unit currentHeight =
|
|
SFG_floorCollisionHeightAt(monsterSquare[0],monsterSquare[1]);
|
|
|
|
if ( // sometimes randomly attack
|
|
!notRanged &&
|
|
(SFG_random() <
|
|
SFG_GET_MONSTER_AGGRESSIVITY(SFG_MONSTER_TYPE_TO_INDEX(type)))
|
|
)
|
|
{
|
|
if (SFG_random() % 4 != 0)
|
|
{
|
|
// attack
|
|
|
|
state = SFG_MONSTER_STATE_ATTACKING;
|
|
|
|
if (type != SFG_LEVEL_ELEMENT_MONSTER_WARRIOR)
|
|
{
|
|
RCL_Vector2D pos;
|
|
RCL_Vector2D dir;
|
|
|
|
pos.x = SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[0]);
|
|
pos.y = SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[1]);
|
|
|
|
dir.x = SFG_player.camera.position.x - pos.x
|
|
- 128 * SFG_MONSTER_AIM_RANDOMNESS +
|
|
SFG_random() * SFG_MONSTER_AIM_RANDOMNESS;
|
|
|
|
dir.y = SFG_player.camera.position.y - pos.y
|
|
- 128 * SFG_MONSTER_AIM_RANDOMNESS +
|
|
SFG_random() * SFG_MONSTER_AIM_RANDOMNESS;
|
|
|
|
dir = RCL_normalize(dir);
|
|
|
|
uint8_t projectile;
|
|
|
|
switch (SFG_GET_MONSTER_ATTACK_TYPE(monsterNumber))
|
|
{
|
|
case SFG_MONSTER_ATTACK_FIREBALL:
|
|
projectile = SFG_PROJECTILE_FIREBALL;
|
|
break;
|
|
|
|
case SFG_MONSTER_ATTACK_BULLET:
|
|
projectile = SFG_PROJECTILE_BULLET;
|
|
break;
|
|
|
|
case SFG_MONSTER_ATTACK_PLASMA:
|
|
projectile = SFG_PROJECTILE_PLASMA;
|
|
break;
|
|
|
|
case SFG_MONSTER_ATTACK_FIREBALL_BULLET:
|
|
projectile = (SFG_random() < 128) ?
|
|
SFG_PROJECTILE_FIREBALL :
|
|
SFG_PROJECTILE_BULLET;
|
|
break;
|
|
|
|
case SFG_MONSTER_ATTACK_FIREBALL_PLASMA:
|
|
projectile = (SFG_random() < 128) ?
|
|
SFG_PROJECTILE_FIREBALL :
|
|
SFG_PROJECTILE_PLASMA;
|
|
break;
|
|
|
|
default:
|
|
projectile = SFG_PROJECTILE_NONE;
|
|
break;
|
|
}
|
|
|
|
if (projectile == SFG_PROJECTILE_BULLET)
|
|
SFG_playGameSound(0,
|
|
SFG_distantSoundVolume(
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[0]),
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[1]),
|
|
currentHeight)
|
|
);
|
|
|
|
SFG_launchProjectile(
|
|
projectile,
|
|
pos,
|
|
currentHeight + RCL_UNITS_PER_SQUARE / 2,
|
|
dir,
|
|
0,
|
|
SFG_PROJECTILE_SPAWN_OFFSET
|
|
);
|
|
}
|
|
}
|
|
else
|
|
state = SFG_MONSTER_STATE_IDLE;
|
|
}
|
|
else if (state == SFG_MONSTER_STATE_IDLE)
|
|
{
|
|
if (notRanged)
|
|
{
|
|
// non-ranged monsters walk towards player
|
|
|
|
RCL_Unit pX, pY, pZ;
|
|
SFG_getMonsterWorldPosition(monster,&pX,&pY,&pZ);
|
|
|
|
uint8_t isClose = // close to player?
|
|
SFG_taxicabDistance(pX,pY,pZ,
|
|
SFG_player.camera.position.x,
|
|
SFG_player.camera.position.y,
|
|
SFG_player.camera.height) <= SFG_MELEE_RANGE;
|
|
|
|
if (!isClose)
|
|
{
|
|
// walk towards player
|
|
|
|
if (monsterSquare[0] > SFG_player.squarePosition[0])
|
|
{
|
|
if (monsterSquare[1] > SFG_player.squarePosition[1])
|
|
state = SFG_MONSTER_STATE_GOING_NW;
|
|
else if (monsterSquare[1] < SFG_player.squarePosition[1])
|
|
state = SFG_MONSTER_STATE_GOING_SW;
|
|
else
|
|
state = SFG_MONSTER_STATE_GOING_W;
|
|
}
|
|
else if (monsterSquare[0] < SFG_player.squarePosition[0])
|
|
{
|
|
if (monsterSquare[1] > SFG_player.squarePosition[1])
|
|
state = SFG_MONSTER_STATE_GOING_NE;
|
|
else if (monsterSquare[1] < SFG_player.squarePosition[1])
|
|
state = SFG_MONSTER_STATE_GOING_SE;
|
|
else
|
|
state = SFG_MONSTER_STATE_GOING_E;
|
|
}
|
|
else
|
|
{
|
|
if (monsterSquare[1] > SFG_player.squarePosition[1])
|
|
state = SFG_MONSTER_STATE_GOING_N;
|
|
else if (monsterSquare[1] < SFG_player.squarePosition[1])
|
|
state = SFG_MONSTER_STATE_GOING_S;
|
|
}
|
|
}
|
|
else // is close
|
|
{
|
|
// melee, close-up attack
|
|
|
|
if (attackType == SFG_MONSTER_ATTACK_MELEE)
|
|
{
|
|
// melee attack
|
|
|
|
state = SFG_MONSTER_STATE_ATTACKING;
|
|
|
|
SFG_playerChangeHealth(
|
|
-1 * SFG_getDamageValue(SFG_WEAPON_FIRE_TYPE_MELEE));
|
|
|
|
SFG_playGameSound(3,255);
|
|
}
|
|
else // SFG_MONSTER_ATTACK_EXPLODE
|
|
{
|
|
// explode
|
|
|
|
SFG_createExplosion(pX,pY,pZ);
|
|
monster->health = 0;
|
|
}
|
|
}
|
|
}
|
|
else // ranged monsters
|
|
{
|
|
// choose walk direction randomly
|
|
|
|
switch (SFG_random() % 8)
|
|
{
|
|
case 0: state = SFG_MONSTER_STATE_GOING_E; break;
|
|
case 1: state = SFG_MONSTER_STATE_GOING_W; break;
|
|
case 2: state = SFG_MONSTER_STATE_GOING_N; break;
|
|
case 3: state = SFG_MONSTER_STATE_GOING_S; break;
|
|
case 4: state = SFG_MONSTER_STATE_GOING_NE; break;
|
|
case 5: state = SFG_MONSTER_STATE_GOING_NW; break;
|
|
case 6: state = SFG_MONSTER_STATE_GOING_SE; break;
|
|
case 7: state = SFG_MONSTER_STATE_GOING_SW; break;
|
|
default: break;
|
|
}
|
|
}
|
|
}
|
|
else if (state == SFG_MONSTER_STATE_ATTACKING)
|
|
{
|
|
state = SFG_MONSTER_STATE_IDLE;
|
|
}
|
|
else
|
|
{
|
|
int8_t add = 1;
|
|
|
|
if (attackType == SFG_MONSTER_ATTACK_MELEE)
|
|
add = 2;
|
|
else if (attackType == SFG_MONSTER_ATTACK_EXPLODE)
|
|
add = 3;
|
|
|
|
if (state == SFG_MONSTER_STATE_GOING_E ||
|
|
state == SFG_MONSTER_STATE_GOING_NE ||
|
|
state == SFG_MONSTER_STATE_GOING_SE)
|
|
coordAdd[0] = add;
|
|
else if (state == SFG_MONSTER_STATE_GOING_W ||
|
|
state == SFG_MONSTER_STATE_GOING_SW ||
|
|
state == SFG_MONSTER_STATE_GOING_NW)
|
|
coordAdd[0] = -1 * add;
|
|
|
|
if (state == SFG_MONSTER_STATE_GOING_N ||
|
|
state == SFG_MONSTER_STATE_GOING_NE ||
|
|
state == SFG_MONSTER_STATE_GOING_NW)
|
|
coordAdd[1] = -1 * add;
|
|
else if (state == SFG_MONSTER_STATE_GOING_S ||
|
|
state == SFG_MONSTER_STATE_GOING_SE ||
|
|
state == SFG_MONSTER_STATE_GOING_SW)
|
|
coordAdd[1] = add;
|
|
|
|
if ((coordAdd[0] != 0 || coordAdd[1] != 0) && SFG_random() <
|
|
SFG_MONSTER_SOUND_PROBABILITY)
|
|
SFG_playGameSound(5,
|
|
SFG_distantSoundVolume(
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[0]),
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[1]),
|
|
currentHeight) / 2);
|
|
|
|
state = SFG_MONSTER_STATE_IDLE;
|
|
}
|
|
|
|
int16_t newPos[2];
|
|
|
|
newPos[0] = monster->coords[0] + coordAdd[0];
|
|
newPos[1] = monster->coords[1] + coordAdd[1];
|
|
|
|
int8_t collision = 0;
|
|
|
|
if (newPos[0] < 0 || newPos[0] >= 256 || newPos[1] < 0 || newPos[1] >= 256)
|
|
{
|
|
collision = 1;
|
|
}
|
|
else
|
|
{
|
|
uint8_t movingDiagonally = (coordAdd[0] != 0) && (coordAdd[1] != 0);
|
|
|
|
// when moving diagonally, we need to check extra tiles
|
|
|
|
for (uint8_t i = 0; i < (1 + movingDiagonally); ++i)
|
|
{
|
|
newPos[0] = monster->coords[0] + (i != 1) * coordAdd[0];
|
|
|
|
RCL_Unit newHeight =
|
|
SFG_floorCollisionHeightAt(
|
|
SFG_MONSTER_COORD_TO_SQUARES(newPos[0]),
|
|
SFG_MONSTER_COORD_TO_SQUARES(newPos[1]));
|
|
|
|
collision =
|
|
RCL_abs(currentHeight - newHeight) > RCL_CAMERA_COLL_STEP_HEIGHT;
|
|
|
|
if (!collision)
|
|
collision = (SFG_ceilingHeightAt(
|
|
SFG_MONSTER_COORD_TO_SQUARES(newPos[0]),
|
|
SFG_MONSTER_COORD_TO_SQUARES(newPos[1])) - newHeight) <
|
|
SFG_MONSTER_COLLISION_HEIGHT;
|
|
|
|
if (collision)
|
|
break;
|
|
}
|
|
|
|
newPos[0] = monster->coords[0] + coordAdd[0];
|
|
}
|
|
|
|
if (collision)
|
|
{
|
|
state = SFG_MONSTER_STATE_IDLE;
|
|
// ^ will force the monster to choose random direction in the next update
|
|
|
|
newPos[0] = monster->coords[0];
|
|
newPos[1] = monster->coords[1];
|
|
}
|
|
|
|
monster->stateType = state | (monsterNumber << 4);
|
|
monster->coords[0] = newPos[0];
|
|
monster->coords[1] = newPos[1];;
|
|
}
|
|
|
|
static inline uint8_t SFG_elementCollides(
|
|
RCL_Unit pointX,
|
|
RCL_Unit pointY,
|
|
RCL_Unit pointZ,
|
|
RCL_Unit elementX,
|
|
RCL_Unit elementY,
|
|
RCL_Unit elementHeight
|
|
)
|
|
{
|
|
return
|
|
SFG_taxicabDistance(pointX,pointY,pointZ,elementX,elementY,elementHeight)
|
|
<= SFG_ELEMENT_COLLISION_RADIUS;
|
|
}
|
|
|
|
/**
|
|
Checks collision of a projectile with level element at given position.
|
|
*/
|
|
uint8_t SFG_projectileCollides(SFG_ProjectileRecord *projectile,
|
|
RCL_Unit x, RCL_Unit y, RCL_Unit z)
|
|
{
|
|
if (!SFG_elementCollides(x,y,z,
|
|
projectile->position[0],projectile->position[1],projectile->position[2]))
|
|
return 0;
|
|
|
|
if ((projectile->type == SFG_PROJECTILE_EXPLOSION) ||
|
|
(projectile->type == SFG_PROJECTILE_DUST))
|
|
return 0;
|
|
|
|
/* For directional projectiles we only register a collision if its direction
|
|
is "towards" the element so that the shooter doesn't get shot by his own
|
|
projectile. */
|
|
|
|
RCL_Vector2D projDir, toElement;
|
|
|
|
projDir.x = projectile->direction[0];
|
|
projDir.y = projectile->direction[1];
|
|
|
|
toElement.x = x - projectile->position[0];
|
|
toElement.y = y - projectile->position[1];
|
|
|
|
return RCL_vectorsAngleCos(projDir,toElement) >= 0;
|
|
}
|
|
|
|
/**
|
|
Updates a frame of the currently loaded level, i.e. enemies, projectiles,
|
|
aimations etc., with the exception of player.
|
|
*/
|
|
void SFG_updateLevel()
|
|
{
|
|
// update projectiles:
|
|
|
|
uint8_t substractFrames =
|
|
((SFG_game.frame - SFG_currentLevel.frameStart) & 0x01) ? 1 : 0;
|
|
/* ^ only substract frames to live every other frame because a maximum of
|
|
256 frames would be too few */
|
|
|
|
for (int8_t i = 0; i < SFG_currentLevel.projectileRecordCount; ++i)
|
|
{ // ^ has to be signed
|
|
SFG_ProjectileRecord *p = &(SFG_currentLevel.projectileRecords[i]);
|
|
|
|
uint8_t attackType = 255;
|
|
|
|
if (p->type == SFG_PROJECTILE_BULLET)
|
|
attackType = SFG_WEAPON_FIRE_TYPE_BULLET;
|
|
else if (p->type == SFG_PROJECTILE_PLASMA)
|
|
attackType = SFG_WEAPON_FIRE_TYPE_PLASMA;
|
|
|
|
RCL_Unit pos[3] = {0,0,0}; /* we have to convert from uint16_t because of
|
|
under/overflows */
|
|
uint8_t eliminate = 0;
|
|
|
|
for (uint8_t j = 0; j < 3; ++j)
|
|
{
|
|
pos[j] = p->position[j];
|
|
pos[j] += p->direction[j];
|
|
|
|
if ( // projectile outside map?
|
|
(pos[j] < 0) ||
|
|
(pos[j] >= (SFG_MAP_SIZE * RCL_UNITS_PER_SQUARE)))
|
|
{
|
|
eliminate = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (p->doubleFramesToLive == 0) // no more time to live?
|
|
{
|
|
eliminate = 1;
|
|
}
|
|
else if (
|
|
(p->type != SFG_PROJECTILE_EXPLOSION) &&
|
|
(p->type != SFG_PROJECTILE_DUST))
|
|
{
|
|
if (SFG_projectileCollides( // collides with player?
|
|
p,
|
|
SFG_player.camera.position.x,
|
|
SFG_player.camera.position.y,
|
|
SFG_player.camera.height))
|
|
{
|
|
eliminate = 1;
|
|
|
|
SFG_playerChangeHealth(-1 * SFG_getDamageValue(attackType));
|
|
}
|
|
|
|
/* Check collision with the map (we don't use SFG_floorCollisionHeightAt
|
|
because collisions with items have to be done differently for
|
|
projectiles). */
|
|
|
|
if (!eliminate &&
|
|
((SFG_floorHeightAt(pos[0] / RCL_UNITS_PER_SQUARE,pos[1] /
|
|
RCL_UNITS_PER_SQUARE) >= pos[2])
|
|
||
|
|
(SFG_ceilingHeightAt(pos[0] / RCL_UNITS_PER_SQUARE,pos[1] /
|
|
RCL_UNITS_PER_SQUARE) <= pos[2]))
|
|
)
|
|
eliminate = 1;
|
|
|
|
// check collision with active level elements
|
|
|
|
if (!eliminate) // monsters
|
|
for (uint16_t j = 0; j < SFG_currentLevel.monsterRecordCount; ++j)
|
|
{
|
|
SFG_MonsterRecord *m = &(SFG_currentLevel.monsterRecords[j]);
|
|
|
|
uint8_t state = SFG_MR_STATE(*m);
|
|
|
|
if ((state != SFG_MONSTER_STATE_INACTIVE) &&
|
|
(state != SFG_MONSTER_STATE_DEAD))
|
|
{
|
|
if (SFG_projectileCollides(p,
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(m->coords[0]),
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(m->coords[1]),
|
|
SFG_floorHeightAt(
|
|
SFG_MONSTER_COORD_TO_SQUARES(m->coords[0]),
|
|
SFG_MONSTER_COORD_TO_SQUARES(m->coords[1]))
|
|
))
|
|
{
|
|
eliminate = 1;
|
|
SFG_monsterChangeHealth(m,-1 * SFG_getDamageValue(attackType));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!eliminate) // items (can't check itemCollisionMap because of barrels)
|
|
for (uint16_t j = 0; j < SFG_currentLevel.itemRecordCount; ++j)
|
|
{
|
|
const SFG_LevelElement *e = SFG_getActiveItemElement(j);
|
|
|
|
if (e != 0 && SFG_itemCollides(e->type))
|
|
{
|
|
RCL_Unit x = SFG_ELEMENT_COORD_TO_RCL_UNITS(e->coords[0]);
|
|
RCL_Unit y = SFG_ELEMENT_COORD_TO_RCL_UNITS(e->coords[1]);
|
|
RCL_Unit z = SFG_floorHeightAt(e->coords[0],e->coords[1]);
|
|
|
|
if (SFG_projectileCollides(p,x,y,z))
|
|
{
|
|
if (
|
|
(e->type == SFG_LEVEL_ELEMENT_BARREL) &&
|
|
(SFG_getDamageValue(attackType) >=
|
|
SFG_BARREL_EXPLOSION_DAMAGE_THRESHOLD)
|
|
)
|
|
{
|
|
SFG_explodeBarrel(j,x,y,z);
|
|
}
|
|
|
|
eliminate = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (eliminate)
|
|
{
|
|
if (p->type == SFG_PROJECTILE_FIREBALL)
|
|
SFG_createExplosion(p->position[0],p->position[1],p->position[2]);
|
|
else if (p->type == SFG_PROJECTILE_BULLET)
|
|
SFG_createDust(p->position[0],p->position[1],p->position[2]);
|
|
else if (p->type == SFG_PROJECTILE_PLASMA)
|
|
SFG_playGameSound(4,SFG_distantSoundVolume(pos[0],pos[1],pos[2]));
|
|
|
|
// remove the projectile
|
|
|
|
for (uint8_t j = i; j < SFG_currentLevel.projectileRecordCount - 1; ++j)
|
|
SFG_currentLevel.projectileRecords[j] =
|
|
SFG_currentLevel.projectileRecords[j + 1];
|
|
|
|
SFG_currentLevel.projectileRecordCount--;
|
|
|
|
i--;
|
|
}
|
|
else
|
|
{
|
|
p->position[0] = pos[0];
|
|
p->position[1] = pos[1];
|
|
p->position[2] = pos[2];
|
|
}
|
|
|
|
p->doubleFramesToLive -= substractFrames;
|
|
}
|
|
|
|
// handle door:
|
|
if (SFG_currentLevel.doorRecordCount > 0) // has to be here
|
|
{
|
|
/* Check door on whether a player is standing nearby. For performance
|
|
reasons we only check a few doors and move to others in the next
|
|
frame. */
|
|
|
|
if (SFG_currentLevel.checkedDoorIndex == 0)
|
|
{
|
|
uint8_t count = SFG_player.cards >> 6;
|
|
|
|
SFG_player.cards = (count <= 1) ?
|
|
(SFG_player.cards & 0x07) :
|
|
((SFG_player.cards & 0x7f) | ((count - 1) << 6));
|
|
}
|
|
|
|
for (uint16_t i = 0;
|
|
i < RCL_min(SFG_ELEMENT_DISTANCES_CHECKED_PER_FRAME,
|
|
SFG_currentLevel.doorRecordCount);
|
|
++i)
|
|
{
|
|
SFG_DoorRecord *door =
|
|
&(SFG_currentLevel.doorRecords[SFG_currentLevel.checkedDoorIndex]);
|
|
|
|
uint8_t upDownState = door->state & SFG_DOOR_UP_DOWN_MASK;
|
|
|
|
uint8_t newUpDownState = 0;
|
|
|
|
uint8_t lock = SFG_DOOR_LOCK(door->state);
|
|
|
|
if ( // player near door?
|
|
(door->coords[0] >= (SFG_player.squarePosition[0] - 1)) &&
|
|
(door->coords[0] <= (SFG_player.squarePosition[0] + 1)) &&
|
|
(door->coords[1] >= (SFG_player.squarePosition[1] - 1)) &&
|
|
(door->coords[1] <= (SFG_player.squarePosition[1] + 1)))
|
|
{
|
|
if (lock == 0)
|
|
{
|
|
newUpDownState = SFG_DOOR_UP_DOWN_MASK;
|
|
}
|
|
else
|
|
{
|
|
lock = 1 << (lock - 1);
|
|
|
|
if (SFG_player.cards & lock) // player has the card?
|
|
newUpDownState = SFG_DOOR_UP_DOWN_MASK;
|
|
else
|
|
SFG_player.cards =
|
|
(SFG_player.cards & 0x07) | (lock << 3) | (2 << 6);
|
|
}
|
|
}
|
|
|
|
if (upDownState != newUpDownState)
|
|
SFG_playGameSound(1,255);
|
|
|
|
door->state = (door->state & ~SFG_DOOR_UP_DOWN_MASK) | newUpDownState;
|
|
|
|
SFG_currentLevel.checkedDoorIndex++;
|
|
|
|
if (SFG_currentLevel.checkedDoorIndex >= SFG_currentLevel.doorRecordCount)
|
|
SFG_currentLevel.checkedDoorIndex = 0;
|
|
}
|
|
|
|
// move door up/down:
|
|
for (uint32_t i = 0; i < SFG_currentLevel.doorRecordCount; ++i)
|
|
{
|
|
SFG_DoorRecord *door = &(SFG_currentLevel.doorRecords[i]);
|
|
|
|
int8_t height = door->state & SFG_DOOR_VERTICAL_POSITION_MASK;
|
|
|
|
height = (door->state & SFG_DOOR_UP_DOWN_MASK) ?
|
|
RCL_min(0x1f,height + SFG_DOOR_INCREMENT_PER_FRAME) :
|
|
RCL_max(0x00,height - SFG_DOOR_INCREMENT_PER_FRAME);
|
|
|
|
door->state = (door->state & ~SFG_DOOR_VERTICAL_POSITION_MASK) | height;
|
|
}
|
|
}
|
|
|
|
// handle items, in a similar manner to door:
|
|
if (SFG_currentLevel.itemRecordCount > 0) // has to be here
|
|
{
|
|
// check item distances:
|
|
|
|
for (uint16_t i = 0;
|
|
i < RCL_min(SFG_ELEMENT_DISTANCES_CHECKED_PER_FRAME,
|
|
SFG_currentLevel.itemRecordCount);
|
|
++i)
|
|
{
|
|
SFG_ItemRecord item =
|
|
SFG_currentLevel.itemRecords[SFG_currentLevel.checkedItemIndex];
|
|
|
|
item &= ~SFG_ITEM_RECORD_ACTIVE_MASK;
|
|
|
|
SFG_LevelElement e =
|
|
SFG_currentLevel.levelPointer->elements[item];
|
|
|
|
if (
|
|
SFG_isInActiveDistanceFromPlayer(
|
|
e.coords[0] * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 2,
|
|
e.coords[1] * RCL_UNITS_PER_SQUARE + RCL_UNITS_PER_SQUARE / 2,
|
|
SFG_floorHeightAt(e.coords[0],e.coords[1]) + RCL_UNITS_PER_SQUARE / 2)
|
|
)
|
|
item |= SFG_ITEM_RECORD_ACTIVE_MASK;
|
|
|
|
SFG_currentLevel.itemRecords[SFG_currentLevel.checkedItemIndex] = item;
|
|
|
|
SFG_currentLevel.checkedItemIndex++;
|
|
|
|
if (SFG_currentLevel.checkedItemIndex >= SFG_currentLevel.itemRecordCount)
|
|
SFG_currentLevel.checkedItemIndex = 0;
|
|
}
|
|
}
|
|
|
|
// similarly handle monsters:
|
|
if (SFG_currentLevel.monsterRecordCount > 0) // has to be here
|
|
{
|
|
// check monster distances:
|
|
|
|
for (uint16_t i = 0;
|
|
i < RCL_min(SFG_ELEMENT_DISTANCES_CHECKED_PER_FRAME,
|
|
SFG_currentLevel.monsterRecordCount);
|
|
++i)
|
|
{
|
|
SFG_MonsterRecord *monster =
|
|
&(SFG_currentLevel.monsterRecords[SFG_currentLevel.checkedMonsterIndex]);
|
|
|
|
if ( // far away from the player?
|
|
!SFG_isInActiveDistanceFromPlayer(
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[0]),
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[1]),
|
|
SFG_floorHeightAt(
|
|
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[0]),
|
|
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[1]))
|
|
+ RCL_UNITS_PER_SQUARE / 2
|
|
)
|
|
)
|
|
{
|
|
monster->stateType =
|
|
(monster->stateType & SFG_MONSTER_MASK_TYPE) |
|
|
SFG_MONSTER_STATE_INACTIVE;
|
|
}
|
|
else if (SFG_MR_STATE(*monster) == SFG_MONSTER_STATE_INACTIVE)
|
|
{
|
|
monster->stateType =
|
|
(monster->stateType & SFG_MONSTER_MASK_TYPE) |
|
|
(monster->health != 0 ?
|
|
SFG_MONSTER_STATE_IDLE : SFG_MONSTER_STATE_DEAD);
|
|
}
|
|
|
|
SFG_currentLevel.checkedMonsterIndex++;
|
|
|
|
if (SFG_currentLevel.checkedMonsterIndex >=
|
|
SFG_currentLevel.monsterRecordCount)
|
|
SFG_currentLevel.checkedMonsterIndex = 0;
|
|
}
|
|
}
|
|
|
|
// update AI and handle dead monsters:
|
|
if ((SFG_game.frame - SFG_currentLevel.frameStart) %
|
|
SFG_AI_UPDATE_FRAME_INTERVAL == 0)
|
|
{
|
|
for (uint16_t i = 0; i < SFG_currentLevel.monsterRecordCount; ++i)
|
|
{
|
|
SFG_MonsterRecord *monster = &(SFG_currentLevel.monsterRecords[i]);
|
|
uint8_t state = SFG_MR_STATE(*monster);
|
|
|
|
if ((state == SFG_MONSTER_STATE_INACTIVE) ||
|
|
(state == SFG_MONSTER_STATE_DEAD))
|
|
continue;
|
|
|
|
if (state == SFG_MONSTER_STATE_DYING)
|
|
{
|
|
if (SFG_MR_TYPE(*monster) == SFG_LEVEL_ELEMENT_MONSTER_ENDER)
|
|
{
|
|
SFG_currentLevel.bossCount--;
|
|
|
|
// last boss killed gives player a key card
|
|
|
|
if (SFG_currentLevel.bossCount == 0)
|
|
{
|
|
SFG_LOG("boss killed, giving player a card");
|
|
SFG_player.cards |= 0x04;
|
|
}
|
|
}
|
|
|
|
monster->stateType =
|
|
(monster->stateType & 0xf0) | SFG_MONSTER_STATE_DEAD;
|
|
}
|
|
else if (monster->health == 0)
|
|
{
|
|
monster->stateType = (monster->stateType & SFG_MONSTER_MASK_TYPE) |
|
|
SFG_MONSTER_STATE_DYING;
|
|
|
|
SFG_processEvent(SFG_EVENT_MONSTER_DIES,SFG_MR_TYPE(*monster));
|
|
|
|
if (SFG_MR_TYPE(*monster) == SFG_LEVEL_ELEMENT_MONSTER_EXPLODER)
|
|
SFG_createExplosion(
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[0]),
|
|
SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[1]),
|
|
SFG_floorCollisionHeightAt(
|
|
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[0]),
|
|
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[0])) +
|
|
RCL_UNITS_PER_SQUARE / 2);
|
|
}
|
|
else
|
|
{
|
|
#if SFG_PREVIEW_MODE == 0
|
|
SFG_monsterPerformAI(monster);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
Maps square position on the map to a bit in map reveal mask.
|
|
*/
|
|
static inline uint16_t SFG_getMapRevealBit(uint8_t squareX, uint8_t squareY)
|
|
{
|
|
return 1 << ((squareY / 16) * 4 + squareX / 16);
|
|
}
|
|
|
|
/**
|
|
Checks a 3D point visibility from player's position (WITHOUT considering
|
|
facing direction).
|
|
*/
|
|
static inline uint8_t SFG_spriteIsVisible(RCL_Vector2D pos, RCL_Unit height,
|
|
uint8_t spriteSize)
|
|
{
|
|
return
|
|
RCL_castRay3D(
|
|
SFG_player.camera.position,
|
|
SFG_player.camera.height,
|
|
pos,
|
|
height,
|
|
SFG_floorHeightAt,
|
|
SFG_ceilingHeightAt,
|
|
SFG_game.rayConstraints
|
|
) == RCL_UNITS_PER_SQUARE;
|
|
}
|
|
|
|
/**
|
|
Returns a tangent in RCL_Unit of vertical autoaim, given current game state.
|
|
*/
|
|
RCL_Unit SFG_autoaimVertically()
|
|
{
|
|
for (uint16_t i = 0; i < SFG_currentLevel.monsterRecordCount; ++i)
|
|
{
|
|
SFG_MonsterRecord m = SFG_currentLevel.monsterRecords[i];
|
|
|
|
if (SFG_MR_STATE(m) == SFG_MONSTER_STATE_INACTIVE)
|
|
continue;
|
|
|
|
RCL_Vector2D worldPosition, toMonster;
|
|
|
|
worldPosition.x = SFG_MONSTER_COORD_TO_RCL_UNITS(m.coords[0]);
|
|
worldPosition.y = SFG_MONSTER_COORD_TO_RCL_UNITS(m.coords[1]);
|
|
|
|
toMonster.x = worldPosition.x - SFG_player.camera.position.x;
|
|
toMonster.y = worldPosition.y - SFG_player.camera.position.y;
|
|
|
|
if (RCL_abs(
|
|
RCL_vectorsAngleCos(SFG_player.direction,toMonster)
|
|
- RCL_UNITS_PER_SQUARE) < SFG_VERTICAL_AUTOAIM_ANGLE_THRESHOLD)
|
|
{
|
|
uint8_t spriteSize = SFG_GET_MONSTER_SPRITE_SIZE(
|
|
SFG_MONSTER_TYPE_TO_INDEX(SFG_MR_TYPE(m)));
|
|
|
|
RCL_Unit worldHeight =
|
|
SFG_floorHeightAt(
|
|
SFG_MONSTER_COORD_TO_SQUARES(m.coords[0]),
|
|
SFG_MONSTER_COORD_TO_SQUARES(m.coords[1]))
|
|
+
|
|
SFG_SPRITE_SIZE_TO_HEIGHT_ABOVE_GROUND(spriteSize);
|
|
|
|
if (SFG_spriteIsVisible(worldPosition,worldHeight,spriteSize))
|
|
{
|
|
RCL_Unit distance = RCL_len(toMonster);
|
|
|
|
return ((worldHeight - SFG_player.camera.height) * RCL_UNITS_PER_SQUARE)
|
|
/ distance;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
Draws text on screen using the bitmap font stored in assets.
|
|
*/
|
|
void SFG_drawText(
|
|
const char *text,
|
|
uint16_t x,
|
|
uint16_t y,
|
|
uint8_t size,
|
|
uint8_t color,
|
|
uint16_t maxLength,
|
|
uint16_t limitX)
|
|
{
|
|
if (size == 0)
|
|
size = 1;
|
|
|
|
if (limitX == 0)
|
|
limitX = 65535;
|
|
|
|
if (maxLength == 0)
|
|
maxLength = 65535;
|
|
|
|
uint16_t pos = 0;
|
|
|
|
uint16_t currentX = x;
|
|
uint16_t currentY = y;
|
|
|
|
while (pos < maxLength && text[pos] != 0) // for each character
|
|
{
|
|
uint16_t character = SFG_font[SFG_charToFontIndex(text[pos])];
|
|
|
|
for (uint8_t i = 0; i < SFG_FONT_CHARACTER_SIZE; ++i) // for each line
|
|
{
|
|
currentY = y;
|
|
|
|
for (uint8_t j = 0; j < SFG_FONT_CHARACTER_SIZE; ++j) // for each row
|
|
{
|
|
if (character & 0x8000)
|
|
for (uint8_t k = 0; k < size; ++k)
|
|
for (uint8_t l = 0; l < size; ++l)
|
|
{
|
|
uint16_t drawX = currentX + k;
|
|
uint16_t drawY = currentY + l;
|
|
|
|
if (drawX < SFG_GAME_RESOLUTION_X &&
|
|
drawY < SFG_GAME_RESOLUTION_Y)
|
|
SFG_setGamePixel(drawX,drawY,color);
|
|
}
|
|
|
|
currentY += size;
|
|
character = character << 1;
|
|
}
|
|
|
|
currentX += size;
|
|
}
|
|
|
|
currentX += size; // space
|
|
|
|
if (currentX > limitX)
|
|
{
|
|
currentX = x;
|
|
y += (SFG_FONT_CHARACTER_SIZE + 1) * size;
|
|
}
|
|
|
|
pos++;
|
|
}
|
|
}
|
|
|
|
void SFG_drawLevelStartOverlay()
|
|
{
|
|
uint8_t stage = ((SFG_game.frameTime - SFG_game.stateChangeTime) * 4) /
|
|
SFG_LEVEL_START_DURATION;
|
|
|
|
// fade in:
|
|
|
|
for (uint16_t y = 0; y < SFG_GAME_RESOLUTION_Y; ++y)
|
|
for (uint16_t x = 0; x < SFG_GAME_RESOLUTION_X; ++x)
|
|
{
|
|
uint8_t draw = 0;
|
|
|
|
switch (stage)
|
|
{
|
|
case 0: draw = 1; break;
|
|
case 1: draw = (x % 2) || (y % 2); break;
|
|
case 2: draw = (x % 2) == (y % 2); break;
|
|
case 3: draw = (x % 2) && (y % 2); break;
|
|
default: break;
|
|
}
|
|
|
|
if (draw)
|
|
SFG_setGamePixel(x,y,0);
|
|
}
|
|
|
|
if (SFG_game.saved == 1)
|
|
SFG_drawText(SFG_TEXT_SAVED,SFG_HUD_MARGIN,SFG_HUD_MARGIN,
|
|
SFG_FONT_SIZE_MEDIUM,7,255,0);
|
|
}
|
|
|
|
/**
|
|
Sets player's height to match the floor height below him.
|
|
*/
|
|
void SFG_updatePlayerHeight()
|
|
{
|
|
SFG_player.camera.height =
|
|
SFG_floorCollisionHeightAt(
|
|
SFG_player.squarePosition[0],SFG_player.squarePosition[1]) +
|
|
RCL_CAMERA_COLL_HEIGHT_BELOW;
|
|
}
|
|
|
|
/**
|
|
Part of SFG_gameStep() for SFG_GAME_STATE_PLAYING.
|
|
*/
|
|
void SFG_gameStepPlaying()
|
|
{
|
|
if (
|
|
(SFG_keyIsDown(SFG_KEY_C) && SFG_keyIsDown(SFG_KEY_DOWN)) ||
|
|
SFG_keyIsDown(SFG_KEY_MENU))
|
|
{
|
|
SFG_setGameState(SFG_GAME_STATE_MENU);
|
|
SFG_playGameSound(3,SFG_MENU_CLICK_VOLUME);
|
|
return;
|
|
}
|
|
|
|
SFG_updateLevel();
|
|
|
|
int8_t recomputeDirection = SFG_currentLevel.frameStart == SFG_game.frame;
|
|
|
|
RCL_Vector2D moveOffset;
|
|
|
|
moveOffset.x = 0;
|
|
moveOffset.y = 0;
|
|
|
|
int8_t strafe = 0;
|
|
|
|
uint8_t currentWeapon = SFG_player.weapon;
|
|
|
|
#if SFG_HEADBOB_ENABLED
|
|
int8_t bobbing = 0;
|
|
#endif
|
|
|
|
int8_t shearing = 0;
|
|
|
|
if (SFG_player.weaponCooldownFrames > 0)
|
|
SFG_player.weaponCooldownFrames--;
|
|
|
|
if (SFG_keyJustPressed(SFG_KEY_TOGGLE_FREELOOK))
|
|
SFG_game.settings = (SFG_game.settings & 0x04) ?
|
|
(SFG_game.settings & ~0x0c) : (SFG_game.settings | 0x0c);
|
|
|
|
int8_t canSwitchWeapon = SFG_player.weaponCooldownFrames == 0;
|
|
|
|
if (SFG_keyJustPressed(SFG_KEY_NEXT_WEAPON) && canSwitchWeapon)
|
|
SFG_playerRotateWeapon(1);
|
|
else if (SFG_keyJustPressed(SFG_KEY_PREVIOUS_WEAPON) && canSwitchWeapon)
|
|
SFG_playerRotateWeapon(0);
|
|
else if (SFG_keyJustPressed(SFG_KEY_CYCLE_WEAPON) &&
|
|
SFG_player.previousWeaponDirection)
|
|
SFG_playerRotateWeapon(SFG_player.previousWeaponDirection > 0);
|
|
|
|
uint8_t shearingOn = SFG_game.settings & 0x04;
|
|
|
|
if (SFG_keyIsDown(SFG_KEY_B))
|
|
{
|
|
if (shearingOn) // B + U/D: shearing (if on)
|
|
{
|
|
if (SFG_keyIsDown(SFG_KEY_UP))
|
|
{
|
|
SFG_player.camera.shear =
|
|
RCL_min(SFG_CAMERA_MAX_SHEAR_PIXELS,
|
|
SFG_player.camera.shear + SFG_CAMERA_SHEAR_STEP_PER_FRAME);
|
|
|
|
shearing = 1;
|
|
}
|
|
else if (SFG_keyIsDown(SFG_KEY_DOWN))
|
|
{
|
|
SFG_player.camera.shear =
|
|
RCL_max(-1 * SFG_CAMERA_MAX_SHEAR_PIXELS,
|
|
SFG_player.camera.shear - SFG_CAMERA_SHEAR_STEP_PER_FRAME);
|
|
|
|
shearing = 1;
|
|
}
|
|
}
|
|
|
|
if (!SFG_keyIsDown(SFG_KEY_C))
|
|
{ // B + L/R: strafing
|
|
if (SFG_keyIsDown(SFG_KEY_LEFT))
|
|
strafe = -1;
|
|
else if (SFG_keyIsDown(SFG_KEY_RIGHT))
|
|
strafe = 1;
|
|
}
|
|
}
|
|
|
|
if (SFG_keyIsDown(SFG_KEY_C)) // C + A/B/L/R: weapon switching
|
|
{
|
|
if ((SFG_keyJustPressed(SFG_KEY_LEFT) || SFG_keyJustPressed(SFG_KEY_A)) &&
|
|
canSwitchWeapon)
|
|
SFG_playerRotateWeapon(0);
|
|
else if (
|
|
(SFG_keyJustPressed(SFG_KEY_RIGHT) || SFG_keyJustPressed(SFG_KEY_B)) &&
|
|
canSwitchWeapon)
|
|
SFG_playerRotateWeapon(1);
|
|
}
|
|
else if (!SFG_keyIsDown(SFG_KEY_B)) // L/R: turning
|
|
{
|
|
if (SFG_keyIsDown(SFG_KEY_LEFT))
|
|
{
|
|
SFG_player.camera.direction -= SFG_PLAYER_TURN_UNITS_PER_FRAME;
|
|
recomputeDirection = 1;
|
|
}
|
|
else if (SFG_keyIsDown(SFG_KEY_RIGHT))
|
|
{
|
|
SFG_player.camera.direction += SFG_PLAYER_TURN_UNITS_PER_FRAME;
|
|
recomputeDirection = 1;
|
|
}
|
|
}
|
|
|
|
if (!SFG_keyIsDown(SFG_KEY_B) || !shearingOn) // U/D: movement
|
|
{
|
|
if (SFG_keyIsDown(SFG_KEY_UP))
|
|
{
|
|
moveOffset.x += SFG_player.direction.x;
|
|
moveOffset.y += SFG_player.direction.y;
|
|
#if SFG_HEADBOB_ENABLED
|
|
bobbing = 1;
|
|
#endif
|
|
}
|
|
else if (SFG_keyIsDown(SFG_KEY_DOWN))
|
|
{
|
|
moveOffset.x -= SFG_player.direction.x;
|
|
moveOffset.y -= SFG_player.direction.y;
|
|
#if SFG_HEADBOB_ENABLED
|
|
bobbing = 1;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
int16_t mouseX = 0, mouseY = 0;
|
|
|
|
SFG_getMouseOffset(&mouseX,&mouseY);
|
|
|
|
if (mouseX != 0) // mouse turning
|
|
{
|
|
SFG_player.camera.direction +=
|
|
(mouseX * SFG_MOUSE_SENSITIVITY_HORIZONTAL) / 128;
|
|
|
|
recomputeDirection = 1;
|
|
}
|
|
|
|
if ((mouseY != 0) && shearingOn) // mouse shearing
|
|
SFG_player.camera.shear =
|
|
RCL_max(RCL_min(
|
|
SFG_player.camera.shear -
|
|
(mouseY * SFG_MOUSE_SENSITIVITY_VERTICAL) / 128,
|
|
SFG_CAMERA_MAX_SHEAR_PIXELS),
|
|
-1 * SFG_CAMERA_MAX_SHEAR_PIXELS);
|
|
|
|
if (recomputeDirection)
|
|
SFG_recomputePLayerDirection();
|
|
|
|
if (SFG_keyIsDown(SFG_KEY_STRAFE_LEFT))
|
|
strafe = -1;
|
|
else if (SFG_keyIsDown(SFG_KEY_STRAFE_RIGHT))
|
|
strafe = 1;
|
|
|
|
if (strafe != 0)
|
|
{
|
|
moveOffset.x += strafe * SFG_player.direction.y;
|
|
moveOffset.y -= strafe * SFG_player.direction.x;
|
|
}
|
|
|
|
#if SFG_PREVIEW_MODE
|
|
if (SFG_keyIsDown(SFG_KEY_B))
|
|
SFG_player.verticalSpeed = SFG_PLAYER_MOVE_UNITS_PER_FRAME;
|
|
else if (SFG_keyIsDown(SFG_KEY_C))
|
|
SFG_player.verticalSpeed = -1 * SFG_PLAYER_MOVE_UNITS_PER_FRAME;
|
|
else
|
|
SFG_player.verticalSpeed = 0;
|
|
#else
|
|
RCL_Unit verticalOffset =
|
|
(
|
|
(
|
|
SFG_keyIsDown(SFG_KEY_JUMP) ||
|
|
(SFG_keyIsDown(SFG_KEY_UP) && SFG_keyIsDown(SFG_KEY_C))
|
|
) &&
|
|
(SFG_player.verticalSpeed == 0) &&
|
|
(SFG_player.previousVerticalSpeed == 0)) ?
|
|
SFG_PLAYER_JUMP_OFFSET_PER_FRAME : // jump
|
|
(SFG_player.verticalSpeed - SFG_GRAVITY_SPEED_INCREASE_PER_FRAME);
|
|
#endif
|
|
|
|
if (!shearing && SFG_player.camera.shear != 0 && !(SFG_game.settings & 0x08))
|
|
{
|
|
// gradually shear back to zero
|
|
|
|
SFG_player.camera.shear =
|
|
(SFG_player.camera.shear > 0) ?
|
|
RCL_max(0,SFG_player.camera.shear - SFG_CAMERA_SHEAR_STEP_PER_FRAME) :
|
|
RCL_min(0,SFG_player.camera.shear + SFG_CAMERA_SHEAR_STEP_PER_FRAME);
|
|
}
|
|
|
|
#if SFG_HEADBOB_ENABLED && !SFG_PREVIEW_MODE
|
|
if (bobbing)
|
|
{
|
|
SFG_player.headBobFrame += SFG_HEADBOB_FRAME_INCREASE_PER_FRAME;
|
|
}
|
|
else if (SFG_player.headBobFrame != 0)
|
|
{
|
|
// smoothly stop bobbing
|
|
|
|
uint8_t quadrant = (SFG_player.headBobFrame % RCL_UNITS_PER_SQUARE) /
|
|
(RCL_UNITS_PER_SQUARE / 4);
|
|
|
|
/* When in quadrant in which sin is going away from zero, switch to the
|
|
same value of the next quadrant, so that bobbing starts to go towards
|
|
zero immediately. */
|
|
|
|
if (quadrant % 2 == 0)
|
|
SFG_player.headBobFrame =
|
|
((quadrant + 1) * RCL_UNITS_PER_SQUARE / 4) +
|
|
(RCL_UNITS_PER_SQUARE / 4 - SFG_player.headBobFrame %
|
|
(RCL_UNITS_PER_SQUARE / 4));
|
|
|
|
RCL_Unit currentFrame = SFG_player.headBobFrame;
|
|
RCL_Unit nextFrame = SFG_player.headBobFrame + 16;
|
|
|
|
// only stop bobbing when we pass a frame at which sin crosses zero
|
|
SFG_player.headBobFrame =
|
|
(currentFrame / (RCL_UNITS_PER_SQUARE / 2) ==
|
|
nextFrame / (RCL_UNITS_PER_SQUARE / 2)) ?
|
|
nextFrame : 0;
|
|
}
|
|
#endif
|
|
|
|
RCL_Unit previousHeight = SFG_player.camera.height;
|
|
|
|
// handle player collision with level elements:
|
|
|
|
// monsters:
|
|
for (uint16_t i = 0; i < SFG_currentLevel.monsterRecordCount; ++i)
|
|
{
|
|
SFG_MonsterRecord *m = &(SFG_currentLevel.monsterRecords[i]);
|
|
|
|
uint8_t state = SFG_MR_STATE(*m);
|
|
|
|
if (state == SFG_MONSTER_STATE_INACTIVE || state == SFG_MONSTER_STATE_DEAD)
|
|
continue;
|
|
|
|
RCL_Vector2D mPos;
|
|
|
|
mPos.x = SFG_MONSTER_COORD_TO_RCL_UNITS(m->coords[0]);
|
|
mPos.y = SFG_MONSTER_COORD_TO_RCL_UNITS(m->coords[1]);
|
|
|
|
if (
|
|
SFG_elementCollides(
|
|
SFG_player.camera.position.x,
|
|
SFG_player.camera.position.y,
|
|
SFG_player.camera.height,
|
|
mPos.x,
|
|
mPos.y,
|
|
SFG_floorHeightAt(
|
|
SFG_MONSTER_COORD_TO_SQUARES(m->coords[0]),
|
|
SFG_MONSTER_COORD_TO_SQUARES(m->coords[1]))
|
|
)
|
|
)
|
|
{
|
|
moveOffset = SFG_resolveCollisionWithElement(
|
|
SFG_player.camera.position,moveOffset,mPos);
|
|
}
|
|
}
|
|
|
|
uint8_t collidesWithTeleporter = 0;
|
|
|
|
/* item collisions with player (only those that don't stop player's movement,
|
|
as those are handled differently, via itemCollisionMap): */
|
|
for (int16_t i = 0; i < SFG_currentLevel.itemRecordCount; ++i)
|
|
// ^ has to be int16_t (signed)
|
|
{
|
|
if (!(SFG_currentLevel.itemRecords[i] & SFG_ITEM_RECORD_ACTIVE_MASK))
|
|
continue;
|
|
|
|
const SFG_LevelElement *e = SFG_getActiveItemElement(i);
|
|
|
|
if (e != 0)
|
|
{
|
|
RCL_Vector2D ePos;
|
|
|
|
ePos.x = SFG_ELEMENT_COORD_TO_RCL_UNITS(e->coords[0]);
|
|
ePos.y = SFG_ELEMENT_COORD_TO_RCL_UNITS(e->coords[1]);
|
|
|
|
if (!SFG_itemCollides(e->type) &&
|
|
SFG_elementCollides(
|
|
SFG_player.camera.position.x,
|
|
SFG_player.camera.position.y,
|
|
SFG_player.camera.height,
|
|
ePos.x,
|
|
ePos.y,
|
|
SFG_floorHeightAt(e->coords[0],e->coords[1]))
|
|
)
|
|
{
|
|
uint8_t eliminate = 1;
|
|
|
|
uint8_t onlyKnife = 1;
|
|
|
|
for (uint8_t j = 0; j < SFG_AMMO_TOTAL; ++j)
|
|
if (SFG_player.ammo[j] != 0)
|
|
{
|
|
onlyKnife = 0;
|
|
break;
|
|
}
|
|
|
|
switch (e->type)
|
|
{
|
|
case SFG_LEVEL_ELEMENT_HEALTH:
|
|
if (SFG_player.health < SFG_PLAYER_MAX_HEALTH)
|
|
SFG_playerChangeHealth(SFG_HEALTH_KIT_VALUE);
|
|
else
|
|
eliminate = 0;
|
|
break;
|
|
|
|
#define addAmmo(type) \
|
|
if (SFG_player.ammo[SFG_AMMO_##type] < SFG_AMMO_MAX_##type) \
|
|
{\
|
|
SFG_player.ammo[SFG_AMMO_##type] = RCL_min(SFG_AMMO_MAX_##type,\
|
|
SFG_player.ammo[SFG_AMMO_##type] + SFG_AMMO_INCREASE_##type);\
|
|
if (onlyKnife) SFG_playerRotateWeapon(1); \
|
|
}\
|
|
else\
|
|
eliminate = 0;
|
|
|
|
case SFG_LEVEL_ELEMENT_BULLETS:
|
|
addAmmo(BULLETS)
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_ROCKETS:
|
|
addAmmo(ROCKETS)
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_PLASMA:
|
|
addAmmo(PLASMA)
|
|
break;
|
|
|
|
#undef addAmmo
|
|
|
|
case SFG_LEVEL_ELEMENT_CARD0:
|
|
case SFG_LEVEL_ELEMENT_CARD1:
|
|
case SFG_LEVEL_ELEMENT_CARD2:
|
|
SFG_player.cards |= 1 << (e->type - SFG_LEVEL_ELEMENT_CARD0);
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_TELEPORTER:
|
|
collidesWithTeleporter = 1;
|
|
eliminate = 0;
|
|
break;
|
|
|
|
case SFG_LEVEL_ELEMENT_FINISH:
|
|
SFG_levelEnds();
|
|
SFG_setGameState(SFG_GAME_STATE_WIN);
|
|
SFG_playGameSound(2,255);
|
|
SFG_processEvent(SFG_EVENT_VIBRATE,0);
|
|
SFG_processEvent(
|
|
SFG_EVENT_LEVEL_WON,SFG_currentLevel.levelNumber + 1);
|
|
eliminate = 0;
|
|
break;
|
|
|
|
default:
|
|
eliminate = 0;
|
|
break;
|
|
}
|
|
|
|
if (eliminate) // take the item
|
|
{
|
|
#if !SFG_PREVIEW_MODE
|
|
SFG_removeItem(i);
|
|
SFG_player.lastItemTakenFrame = SFG_game.frame;
|
|
i--;
|
|
SFG_playGameSound(3,255);
|
|
SFG_processEvent(SFG_EVENT_PLAYER_TAKES_ITEM,e->type);
|
|
#endif
|
|
}
|
|
else if (
|
|
e->type == SFG_LEVEL_ELEMENT_TELEPORTER &&
|
|
SFG_currentLevel.teleporterCount > 1 &&
|
|
!SFG_player.justTeleported)
|
|
{
|
|
// teleport to random destination teleporter
|
|
|
|
uint8_t teleporterNumber =
|
|
SFG_random() % (SFG_currentLevel.teleporterCount - 1) + 1;
|
|
|
|
for (uint16_t j = 0; j < SFG_currentLevel.itemRecordCount; ++j)
|
|
{
|
|
SFG_LevelElement e2 =
|
|
SFG_currentLevel.levelPointer->elements
|
|
[SFG_currentLevel.itemRecords[j] &
|
|
~SFG_ITEM_RECORD_ACTIVE_MASK];
|
|
|
|
if ((e2.type == SFG_LEVEL_ELEMENT_TELEPORTER) && (j != i))
|
|
teleporterNumber--;
|
|
|
|
if (teleporterNumber == 0)
|
|
{
|
|
SFG_player.camera.position.x =
|
|
SFG_ELEMENT_COORD_TO_RCL_UNITS(e2.coords[0]);
|
|
|
|
SFG_player.camera.position.y =
|
|
SFG_ELEMENT_COORD_TO_RCL_UNITS(e2.coords[1]);
|
|
|
|
SFG_player.camera.height =
|
|
SFG_floorHeightAt(e2.coords[0],e2.coords[1]) +
|
|
RCL_CAMERA_COLL_HEIGHT_BELOW;
|
|
|
|
SFG_currentLevel.itemRecords[j] |= SFG_ITEM_RECORD_ACTIVE_MASK;
|
|
/* ^ we have to make the new teleporter immediately active so
|
|
that it will immediately collide */
|
|
|
|
SFG_player.justTeleported = 1;
|
|
|
|
SFG_playGameSound(4,255);
|
|
SFG_processEvent(SFG_EVENT_PLAYER_TELEPORTS,0);
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} // item collision check
|
|
|
|
if (!collidesWithTeleporter)
|
|
SFG_player.justTeleported = 0;
|
|
|
|
#if SFG_PREVIEW_MODE
|
|
SFG_player.camera.position.x +=
|
|
SFG_PREVIEW_MODE_SPEED_MULTIPLIER * moveOffset.x;
|
|
|
|
SFG_player.camera.position.y +=
|
|
SFG_PREVIEW_MODE_SPEED_MULTIPLIER * moveOffset.y;
|
|
|
|
SFG_player.camera.height +=
|
|
SFG_PREVIEW_MODE_SPEED_MULTIPLIER * SFG_player.verticalSpeed;
|
|
#else
|
|
RCL_moveCameraWithCollision(&(SFG_player.camera),moveOffset,
|
|
verticalOffset,SFG_floorCollisionHeightAt,SFG_ceilingHeightAt,1,1);
|
|
|
|
SFG_player.previousVerticalSpeed = SFG_player.verticalSpeed;
|
|
|
|
RCL_Unit limit = RCL_max(RCL_max(0,verticalOffset),SFG_player.verticalSpeed);
|
|
|
|
SFG_player.verticalSpeed =
|
|
RCL_min(limit,SFG_player.camera.height - previousHeight);
|
|
/* ^ By "limit" we assure height increase caused by climbing a step doesn't
|
|
add vertical velocity. */
|
|
#endif
|
|
|
|
#if SFG_PREVIEW_MODE == 0
|
|
if (
|
|
SFG_keyIsDown(SFG_KEY_A) &&
|
|
!SFG_keyIsDown(SFG_KEY_C) &&
|
|
(SFG_player.weaponCooldownFrames == 0))
|
|
{
|
|
/* Player attack/shoot/fire, this has to be done AFTER the player is moved,
|
|
otherwise he could shoot himself while running forward. */
|
|
|
|
uint8_t ammo, projectileCount, canShoot;
|
|
|
|
SFG_getPlayerWeaponInfo(&ammo,&projectileCount,&canShoot);
|
|
|
|
if (canShoot)
|
|
{
|
|
uint8_t sound;
|
|
|
|
switch (SFG_player.weapon)
|
|
{
|
|
case SFG_WEAPON_KNIFE: sound = 255; break;
|
|
case SFG_WEAPON_ROCKET_LAUNCHER:
|
|
case SFG_WEAPON_SHOTGUN: sound = 2; break;
|
|
case SFG_WEAPON_PLASMAGUN:
|
|
case SFG_WEAPON_SOLUTION: sound = 4; break;
|
|
default: sound = 0; break;
|
|
}
|
|
|
|
if (sound != 255)
|
|
SFG_playGameSound(sound,255);
|
|
|
|
if (ammo != SFG_AMMO_NONE)
|
|
SFG_player.ammo[ammo] -= projectileCount;
|
|
|
|
uint8_t projectile;
|
|
|
|
switch (SFG_GET_WEAPON_FIRE_TYPE(SFG_player.weapon))
|
|
{
|
|
case SFG_WEAPON_FIRE_TYPE_PLASMA:
|
|
projectile = SFG_PROJECTILE_PLASMA;
|
|
break;
|
|
|
|
case SFG_WEAPON_FIRE_TYPE_FIREBALL:
|
|
projectile = SFG_PROJECTILE_FIREBALL;
|
|
break;
|
|
|
|
case SFG_WEAPON_FIRE_TYPE_BULLET:
|
|
projectile = SFG_PROJECTILE_BULLET;
|
|
break;
|
|
|
|
case SFG_WEAPON_FIRE_TYPE_MELEE:
|
|
projectile = SFG_PROJECTILE_NONE;
|
|
break;
|
|
|
|
default:
|
|
projectile = 255;
|
|
break;
|
|
}
|
|
|
|
if (projectile != SFG_PROJECTILE_NONE)
|
|
{
|
|
uint16_t angleAdd = SFG_PROJECTILE_SPREAD_ANGLE / (projectileCount + 1);
|
|
|
|
RCL_Unit direction =
|
|
(SFG_player.camera.direction - SFG_PROJECTILE_SPREAD_ANGLE / 2)
|
|
+ angleAdd;
|
|
|
|
RCL_Unit projectileSpeed = SFG_GET_PROJECTILE_SPEED_UPS(projectile);
|
|
|
|
/* Vertical speed will be either determined by autoaim (if shearing is
|
|
off) or the camera shear value. */
|
|
RCL_Unit verticalSpeed = (SFG_game.settings & 0x04) ?
|
|
(SFG_player.camera.shear * projectileSpeed * 2) / // only approximate
|
|
SFG_CAMERA_MAX_SHEAR_PIXELS
|
|
:
|
|
(projectileSpeed * SFG_autoaimVertically()) / RCL_UNITS_PER_SQUARE;
|
|
|
|
for (uint8_t i = 0; i < projectileCount; ++i)
|
|
{
|
|
SFG_launchProjectile(
|
|
projectile,
|
|
SFG_player.camera.position,
|
|
SFG_player.camera.height,
|
|
RCL_angleToDirection(direction),
|
|
verticalSpeed,
|
|
SFG_PROJECTILE_SPAWN_OFFSET
|
|
);
|
|
|
|
direction += angleAdd;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// player's melee attack
|
|
|
|
for (uint16_t i = 0; i < SFG_currentLevel.monsterRecordCount; ++i)
|
|
{
|
|
SFG_MonsterRecord *m = &(SFG_currentLevel.monsterRecords[i]);
|
|
|
|
uint8_t state = SFG_MR_STATE(*m);
|
|
|
|
if ((state == SFG_MONSTER_STATE_INACTIVE) ||
|
|
(state == SFG_MONSTER_STATE_DEAD))
|
|
continue;
|
|
|
|
RCL_Unit pX, pY, pZ;
|
|
SFG_getMonsterWorldPosition(m,&pX,&pY,&pZ);
|
|
|
|
if (SFG_taxicabDistance(pX,pY,pZ,
|
|
SFG_player.camera.position.x,
|
|
SFG_player.camera.position.y,
|
|
SFG_player.camera.height) > SFG_MELEE_RANGE)
|
|
continue;
|
|
|
|
RCL_Vector2D toMonster;
|
|
|
|
toMonster.x = pX - SFG_player.camera.position.x;
|
|
toMonster.y = pY - SFG_player.camera.position.y;
|
|
|
|
if (RCL_vectorsAngleCos(SFG_player.direction,toMonster) >=
|
|
(RCL_UNITS_PER_SQUARE - SFG_PLAYER_MELEE_ANGLE))
|
|
{
|
|
SFG_monsterChangeHealth(m,
|
|
-1 * SFG_getDamageValue(SFG_WEAPON_FIRE_TYPE_MELEE));
|
|
|
|
SFG_createDust(pX,pY,pZ);
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
SFG_player.weaponCooldownFrames =
|
|
RCL_max(
|
|
SFG_GET_WEAPON_FIRE_COOLDOWN_FRAMES(SFG_player.weapon),
|
|
SFG_MIN_WEAPON_COOLDOWN_FRAMES);
|
|
|
|
SFG_getPlayerWeaponInfo(&ammo,&projectileCount,&canShoot);
|
|
|
|
if (!canShoot)
|
|
{
|
|
// No more ammo, switch to the second strongest weapon.
|
|
|
|
SFG_playerRotateWeapon(1);
|
|
|
|
uint8_t previousWeapon = SFG_player.weapon;
|
|
|
|
SFG_playerRotateWeapon(0);
|
|
|
|
if (previousWeapon > SFG_player.weapon)
|
|
SFG_playerRotateWeapon(1);
|
|
}
|
|
} // endif: has enough ammo?
|
|
} // attack
|
|
#endif // SFG_PREVIEW_MODE == 0
|
|
|
|
SFG_player.squarePosition[0] =
|
|
SFG_player.camera.position.x / RCL_UNITS_PER_SQUARE;
|
|
|
|
SFG_player.squarePosition[1] =
|
|
SFG_player.camera.position.y / RCL_UNITS_PER_SQUARE;
|
|
|
|
SFG_currentLevel.mapRevealMask |=
|
|
SFG_getMapRevealBit(
|
|
SFG_player.squarePosition[0],
|
|
SFG_player.squarePosition[1]);
|
|
|
|
uint8_t properties;
|
|
|
|
SFG_getMapTile(SFG_currentLevel.levelPointer,SFG_player.squarePosition[0],
|
|
SFG_player.squarePosition[1],&properties);
|
|
|
|
if ( // squeezer check
|
|
(properties == SFG_TILE_PROPERTY_SQUEEZER) &&
|
|
((SFG_ceilingHeightAt(
|
|
SFG_player.squarePosition[0],SFG_player.squarePosition[1]) -
|
|
SFG_floorHeightAt(
|
|
SFG_player.squarePosition[0],SFG_player.squarePosition[1]))
|
|
<
|
|
(RCL_CAMERA_COLL_HEIGHT_ABOVE + RCL_CAMERA_COLL_HEIGHT_BELOW)))
|
|
{
|
|
SFG_LOG("player is squeezed");
|
|
SFG_player.health = 0;
|
|
}
|
|
|
|
if (SFG_player.weapon != currentWeapon) // if weapon switched, start cooldown
|
|
{
|
|
|
|
if (SFG_player.weapon == (currentWeapon + 1) % SFG_WEAPONS_TOTAL)
|
|
SFG_player.previousWeaponDirection = -1;
|
|
else if (currentWeapon == (SFG_player.weapon + 1) % SFG_WEAPONS_TOTAL)
|
|
SFG_player.previousWeaponDirection = 1;
|
|
else
|
|
SFG_player.previousWeaponDirection = 0;
|
|
|
|
SFG_player.weaponCooldownFrames =
|
|
SFG_GET_WEAPON_FIRE_COOLDOWN_FRAMES(SFG_player.weapon) / 2;
|
|
}
|
|
|
|
#if SFG_IMMORTAL == 0
|
|
if (SFG_player.health == 0)
|
|
{
|
|
SFG_LOG("player dies");
|
|
SFG_levelEnds();
|
|
SFG_processEvent(SFG_EVENT_VIBRATE,0);
|
|
SFG_processEvent(SFG_EVENT_PLAYER_DIES,0);
|
|
SFG_setGameState(SFG_GAME_STATE_LOSE);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
This function defines which items are displayed in the menu.
|
|
*/
|
|
uint8_t SFG_getMenuItem(uint8_t index)
|
|
{
|
|
uint8_t current = 0;
|
|
|
|
while (1) // find first legitimate item
|
|
{
|
|
if ( // skip non-legitimate items
|
|
((current <= SFG_MENU_ITEM_MAP) && (SFG_currentLevel.levelPointer == 0))
|
|
|| ((current == SFG_MENU_ITEM_LOAD) && ((SFG_game.save[0] >> 4) == 0x0f)))
|
|
{
|
|
current++;
|
|
continue;
|
|
}
|
|
|
|
if (index == 0)
|
|
return (current <= (SFG_MENU_ITEM_EXIT - (SFG_CAN_EXIT ? 0 : 1))
|
|
) ? current : SFG_MENU_ITEM_NONE;
|
|
|
|
current++;
|
|
index--;
|
|
}
|
|
|
|
return SFG_MENU_ITEM_NONE;
|
|
}
|
|
|
|
void SFG_gameStepMenu()
|
|
{
|
|
uint8_t menuItems = 0;
|
|
|
|
while (SFG_getMenuItem(menuItems) != SFG_MENU_ITEM_NONE)
|
|
menuItems++;
|
|
|
|
uint8_t item = SFG_getMenuItem(SFG_game.selectedMenuItem);
|
|
|
|
if (SFG_keyRegisters(SFG_KEY_DOWN) &&
|
|
(SFG_game.selectedMenuItem < menuItems - 1))
|
|
{
|
|
SFG_game.selectedMenuItem++;
|
|
SFG_playGameSound(3,SFG_MENU_CLICK_VOLUME);
|
|
}
|
|
else if (SFG_keyRegisters(SFG_KEY_UP) && (SFG_game.selectedMenuItem > 0))
|
|
{
|
|
SFG_game.selectedMenuItem--;
|
|
SFG_playGameSound(3,SFG_MENU_CLICK_VOLUME);
|
|
}
|
|
else if (SFG_keyJustPressed(SFG_KEY_A))
|
|
{
|
|
switch (item)
|
|
{
|
|
case SFG_MENU_ITEM_PLAY:
|
|
for (uint8_t i = 6; i < SFG_SAVE_SIZE; ++i) // reset totals in save
|
|
SFG_game.save[i] = 0;
|
|
|
|
if (SFG_game.selectedLevel == 0)
|
|
{
|
|
SFG_currentLevel.levelNumber = 0; // to draw intro, not outro
|
|
SFG_setGameState(SFG_GAME_STATE_INTRO);
|
|
}
|
|
else
|
|
SFG_setAndInitLevel(SFG_game.selectedLevel);
|
|
|
|
break;
|
|
|
|
case SFG_MENU_ITEM_LOAD:
|
|
{
|
|
SFG_gameLoad();
|
|
|
|
uint8_t saveBackup[SFG_SAVE_SIZE];
|
|
|
|
for (uint8_t i = 0; i < SFG_SAVE_SIZE; ++i)
|
|
saveBackup[i] = SFG_game.save[i];
|
|
|
|
SFG_setAndInitLevel(SFG_game.save[0] >> 4);
|
|
|
|
for (uint8_t i = 0; i < SFG_SAVE_SIZE; ++i)
|
|
SFG_game.save[i] = saveBackup[i];
|
|
|
|
SFG_player.health = SFG_game.save[2];
|
|
SFG_player.ammo[0] = SFG_game.save[3];
|
|
SFG_player.ammo[1] = SFG_game.save[4];
|
|
SFG_player.ammo[2] = SFG_game.save[5];
|
|
|
|
SFG_playerRotateWeapon(1); // this chooses weapon with ammo available
|
|
break;
|
|
}
|
|
|
|
case SFG_MENU_ITEM_CONTINUE:
|
|
SFG_setGameState(SFG_GAME_STATE_PLAYING);
|
|
break;
|
|
|
|
case SFG_MENU_ITEM_MAP:
|
|
SFG_setGameState(SFG_GAME_STATE_MAP);
|
|
break;
|
|
|
|
case SFG_MENU_ITEM_SOUND:
|
|
SFG_LOG("sound changed");
|
|
|
|
SFG_game.settings =
|
|
(SFG_game.settings & ~0x03) | ((SFG_game.settings + 1) & 0x03);
|
|
|
|
SFG_playGameSound(3,SFG_MENU_CLICK_VOLUME);
|
|
|
|
if ((SFG_game.settings & 0x02) !=
|
|
((SFG_game.settings - 1) & 0x02))
|
|
SFG_setMusic((SFG_game.settings & 0x02) ?
|
|
SFG_MUSIC_TURN_ON : SFG_MUSIC_TURN_OFF);
|
|
|
|
SFG_game.save[1] = SFG_game.settings;
|
|
SFG_gameSave();
|
|
|
|
break;
|
|
|
|
case SFG_MENU_ITEM_SHEAR:
|
|
{
|
|
uint8_t current = (SFG_game.settings >> 2) & 0x03;
|
|
|
|
current++;
|
|
|
|
if (current == 2) // option that doesn't make sense, skip
|
|
current++;
|
|
|
|
SFG_game.settings =
|
|
(SFG_game.settings & ~0x0c) | ((current & 0x03) << 2);
|
|
|
|
SFG_game.save[1] = SFG_game.settings;
|
|
SFG_gameSave();
|
|
|
|
break;
|
|
}
|
|
|
|
case SFG_MENU_ITEM_EXIT:
|
|
SFG_game.continues = 0;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else if (item == SFG_MENU_ITEM_PLAY)
|
|
{
|
|
if (SFG_keyRegisters(SFG_KEY_RIGHT) &&
|
|
(SFG_game.selectedLevel < (SFG_game.save[0] & 0x0f)))
|
|
{
|
|
SFG_game.selectedLevel++;
|
|
SFG_playGameSound(3,SFG_MENU_CLICK_VOLUME);
|
|
}
|
|
else if (SFG_keyRegisters(SFG_KEY_LEFT) && SFG_game.selectedLevel > 0)
|
|
{
|
|
SFG_game.selectedLevel--;
|
|
SFG_playGameSound(3,SFG_MENU_CLICK_VOLUME);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
Performs one game step (logic, physics, menu, ...), happening SFG_MS_PER_FRAME
|
|
after the previous step.
|
|
*/
|
|
void SFG_gameStep()
|
|
{
|
|
SFG_GAME_STEP_COMMAND
|
|
|
|
SFG_game.soundsPlayedThisFrame = 0;
|
|
|
|
SFG_game.blink = (SFG_game.frame / SFG_BLINK_PERIOD_FRAMES) % 2;
|
|
|
|
for (uint8_t i = 0; i < SFG_KEY_COUNT; ++i)
|
|
if (!SFG_keyPressed(i))
|
|
SFG_game.keyStates[i] = 0;
|
|
else if (SFG_game.keyStates[i] < 255)
|
|
SFG_game.keyStates[i]++;
|
|
|
|
if ((SFG_currentLevel.frameStart - SFG_game.frame) %
|
|
SFG_SPRITE_ANIMATION_FRAME_DURATION == 0)
|
|
SFG_game.spriteAnimationFrame++;
|
|
|
|
switch (SFG_game.state)
|
|
{
|
|
case SFG_GAME_STATE_PLAYING:
|
|
SFG_gameStepPlaying();
|
|
break;
|
|
|
|
case SFG_GAME_STATE_MENU:
|
|
SFG_gameStepMenu();
|
|
break;
|
|
|
|
case SFG_GAME_STATE_LOSE:
|
|
{
|
|
// player die animation (lose)
|
|
|
|
SFG_updateLevel(); // let monsters and other things continue moving
|
|
SFG_updatePlayerHeight(); // in case player is on elevator
|
|
|
|
int32_t t = SFG_game.frameTime - SFG_game.stateChangeTime;
|
|
|
|
RCL_Unit h = SFG_floorHeightAt(SFG_player.squarePosition[0],
|
|
SFG_player.squarePosition[1]);
|
|
|
|
SFG_player.camera.height =
|
|
RCL_max(h,h + ((SFG_LOSE_ANIMATION_DURATION - t) *
|
|
RCL_CAMERA_COLL_HEIGHT_BELOW) / SFG_LOSE_ANIMATION_DURATION);
|
|
|
|
SFG_player.camera.shear =
|
|
RCL_min(SFG_CAMERA_MAX_SHEAR_PIXELS / 4,
|
|
(t * (SFG_CAMERA_MAX_SHEAR_PIXELS / 4)) / SFG_LOSE_ANIMATION_DURATION);
|
|
|
|
if (t > SFG_LOSE_ANIMATION_DURATION &&
|
|
(SFG_keyIsDown(SFG_KEY_A) || SFG_keyIsDown(SFG_KEY_B)))
|
|
{
|
|
for (uint8_t i = 6; i < SFG_SAVE_SIZE; ++i)
|
|
SFG_game.save[i] = 0;
|
|
|
|
SFG_setAndInitLevel(SFG_currentLevel.levelNumber);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case SFG_GAME_STATE_WIN:
|
|
{
|
|
// win animation
|
|
|
|
SFG_updateLevel();
|
|
|
|
int32_t t = SFG_game.frameTime - SFG_game.stateChangeTime;
|
|
|
|
if (t > SFG_WIN_ANIMATION_DURATION)
|
|
{
|
|
if (SFG_currentLevel.levelNumber == (SFG_NUMBER_OF_LEVELS - 1))
|
|
{
|
|
if (SFG_keyIsDown(SFG_KEY_A))
|
|
SFG_setGameState(SFG_GAME_STATE_OUTRO);
|
|
}
|
|
else if (SFG_keyIsDown(SFG_KEY_RIGHT) ||
|
|
SFG_keyIsDown(SFG_KEY_LEFT))
|
|
{
|
|
SFG_setAndInitLevel(SFG_currentLevel.levelNumber + 1);
|
|
|
|
SFG_player.health = SFG_game.save[2];
|
|
SFG_player.ammo[0] = SFG_game.save[3];
|
|
SFG_player.ammo[1] = SFG_game.save[4];
|
|
SFG_player.ammo[2] = SFG_game.save[5];
|
|
|
|
if (SFG_keyIsDown(SFG_KEY_RIGHT) && SFG_game.saved != SFG_CANT_SAVE)
|
|
{
|
|
// save the current position
|
|
SFG_gameSave();
|
|
SFG_game.saved = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case SFG_GAME_STATE_MAP:
|
|
if (SFG_keyIsDown(SFG_KEY_B))
|
|
SFG_setGameState(SFG_GAME_STATE_MENU);
|
|
|
|
break;
|
|
|
|
case SFG_GAME_STATE_INTRO:
|
|
if (SFG_keyJustPressed(SFG_KEY_A) || SFG_keyJustPressed(SFG_KEY_B))
|
|
SFG_setAndInitLevel(0);
|
|
|
|
break;
|
|
|
|
case SFG_GAME_STATE_OUTRO:
|
|
if (((SFG_game.frameTime - SFG_game.stateChangeTime) >
|
|
SFG_STORYTEXT_DURATION) && (SFG_keyIsDown(SFG_KEY_A) ||
|
|
SFG_keyIsDown(SFG_KEY_B)))
|
|
{
|
|
SFG_setGameState(SFG_GAME_STATE_MENU);
|
|
SFG_playGameSound(3,SFG_MENU_CLICK_VOLUME);
|
|
}
|
|
|
|
break;
|
|
|
|
case SFG_GAME_STATE_LEVEL_START:
|
|
{
|
|
SFG_updateLevel();
|
|
SFG_updatePlayerHeight(); // in case player is on elevator
|
|
|
|
if (SFG_currentLevel.levelNumber > (SFG_game.save[0] & 0x0f))
|
|
{
|
|
SFG_game.save[0] = // save progress
|
|
(SFG_game.save[0] & 0xf0) | SFG_currentLevel.levelNumber;
|
|
SFG_gameSave();
|
|
}
|
|
|
|
int16_t x = 0, y = 0;
|
|
|
|
SFG_getMouseOffset(&x,&y); // this keeps centering the mouse
|
|
|
|
if ((SFG_game.frameTime - SFG_game.stateChangeTime) >=
|
|
SFG_LEVEL_START_DURATION)
|
|
SFG_setGameState(SFG_GAME_STATE_PLAYING);
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void SFG_fillRectangle(
|
|
uint16_t x, uint16_t y, uint16_t width, uint16_t height, uint8_t color)
|
|
{
|
|
if ((x + width > SFG_GAME_RESOLUTION_X) ||
|
|
(y + height > SFG_GAME_RESOLUTION_Y))
|
|
return;
|
|
|
|
for (uint16_t j = y; j < y + height; ++j)
|
|
for (uint16_t i = x; i < x + width; ++i)
|
|
SFG_setGamePixel(i,j,color);
|
|
}
|
|
|
|
static inline void SFG_clearScreen(uint8_t color)
|
|
{
|
|
SFG_fillRectangle(0,0,SFG_GAME_RESOLUTION_X,
|
|
SFG_GAME_RESOLUTION_Y,color);
|
|
}
|
|
|
|
/**
|
|
Draws fullscreen map of the current level.
|
|
*/
|
|
void SFG_drawMap()
|
|
{
|
|
SFG_clearScreen(0);
|
|
|
|
uint16_t maxJ =
|
|
(SFG_MAP_PIXEL_SIZE * SFG_MAP_SIZE) < SFG_GAME_RESOLUTION_Y ?
|
|
(SFG_MAP_SIZE) : (SFG_GAME_RESOLUTION_Y / SFG_MAP_PIXEL_SIZE);
|
|
|
|
uint16_t maxI =
|
|
(SFG_MAP_PIXEL_SIZE * SFG_MAP_SIZE) < SFG_GAME_RESOLUTION_X ?
|
|
(SFG_MAP_SIZE) : (SFG_GAME_RESOLUTION_X / SFG_MAP_PIXEL_SIZE);
|
|
|
|
uint16_t topLeftX =
|
|
(SFG_GAME_RESOLUTION_X - (maxI * SFG_MAP_PIXEL_SIZE)) / 2;
|
|
|
|
uint16_t topLeftY =
|
|
(SFG_GAME_RESOLUTION_Y - (maxJ * SFG_MAP_PIXEL_SIZE)) / 2;
|
|
|
|
uint16_t x;
|
|
uint16_t y = topLeftY;
|
|
|
|
uint8_t playerColor =
|
|
SFG_game.blink ? SFG_MAP_PLAYER_COLOR1 : SFG_MAP_PLAYER_COLOR2;
|
|
|
|
for (int16_t j = 0; j < maxJ; ++j)
|
|
{
|
|
x = topLeftX;
|
|
|
|
for (int16_t i = maxI - 1; i >= 0; --i)
|
|
{
|
|
uint8_t color = 0; // init with non-revealed color
|
|
|
|
if (SFG_currentLevel.mapRevealMask & SFG_getMapRevealBit(i,j))
|
|
{
|
|
uint8_t properties;
|
|
|
|
SFG_TileDefinition tile =
|
|
SFG_getMapTile(SFG_currentLevel.levelPointer,i,j,&properties);
|
|
|
|
color = playerColor; // start with player color
|
|
|
|
if (i != SFG_player.squarePosition[0] ||
|
|
j != SFG_player.squarePosition[1])
|
|
{
|
|
if (properties == SFG_TILE_PROPERTY_ELEVATOR)
|
|
color = SFG_MAP_ELEVATOR_COLOR;
|
|
else if (properties == SFG_TILE_PROPERTY_SQUEEZER)
|
|
color = SFG_MAP_SQUEEZER_COLOR;
|
|
else if (properties == SFG_TILE_PROPERTY_DOOR)
|
|
color = SFG_MAP_DOOR_COLOR;
|
|
else
|
|
{
|
|
color = 0;
|
|
|
|
uint8_t c = SFG_TILE_CEILING_HEIGHT(tile) / 4;
|
|
|
|
if (c != 0)
|
|
color = (SFG_TILE_FLOOR_HEIGHT(tile) % 8 + 3) * 8 + c - 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (int_fast16_t k = 0; k < SFG_MAP_PIXEL_SIZE; ++k)
|
|
for (int_fast16_t l = 0; l < SFG_MAP_PIXEL_SIZE; ++l)
|
|
SFG_setGamePixel(x + l, y + k,color);
|
|
|
|
x += SFG_MAP_PIXEL_SIZE;
|
|
}
|
|
|
|
y += SFG_MAP_PIXEL_SIZE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Draws fullscreen story text (intro/outro).
|
|
*/
|
|
void SFG_drawStoryText()
|
|
{
|
|
const char *text = SFG_outroText;
|
|
uint16_t textColor = 23;
|
|
uint8_t clearColor = 9;
|
|
uint8_t sprite = 18;
|
|
|
|
if (SFG_currentLevel.levelNumber != (SFG_NUMBER_OF_LEVELS - 1)) // intro?
|
|
{
|
|
text = SFG_introText;
|
|
textColor = 7;
|
|
clearColor = 0;
|
|
sprite = SFG_game.blink * 2;
|
|
}
|
|
|
|
SFG_clearScreen(clearColor);
|
|
|
|
if (SFG_GAME_RESOLUTION_Y > 50)
|
|
SFG_blitImage(SFG_monsterSprites + sprite * SFG_TEXTURE_STORE_SIZE,
|
|
(SFG_GAME_RESOLUTION_X - SFG_TEXTURE_SIZE * SFG_FONT_SIZE_SMALL) / 2,
|
|
SFG_GAME_RESOLUTION_Y - (SFG_TEXTURE_SIZE + 3) * SFG_FONT_SIZE_SMALL,
|
|
SFG_FONT_SIZE_SMALL);
|
|
|
|
uint16_t textLen = 0;
|
|
|
|
while (text[textLen] != 0)
|
|
textLen++;
|
|
|
|
uint16_t drawLen =
|
|
RCL_min(textLen,
|
|
((SFG_game.frameTime - SFG_game.stateChangeTime) * textLen) /
|
|
SFG_STORYTEXT_DURATION + 1);
|
|
|
|
#define CHAR_SIZE (SFG_FONT_SIZE_SMALL * (SFG_FONT_CHARACTER_SIZE + 1))
|
|
#define LINE_LENGTH (SFG_GAME_RESOLUTION_X / CHAR_SIZE)
|
|
#define MAX_LENGTH (((SFG_GAME_RESOLUTION_Y / CHAR_SIZE) / 2) * LINE_LENGTH )
|
|
|
|
uint16_t drawShift = (drawLen < MAX_LENGTH) ? 0 :
|
|
(((drawLen - MAX_LENGTH) / LINE_LENGTH) * LINE_LENGTH);
|
|
|
|
#undef CHAR_SIZE
|
|
#undef LINE_LENGTH
|
|
#undef MAX_LENGTH
|
|
|
|
text += drawShift;
|
|
drawLen -= drawShift;
|
|
|
|
SFG_drawText(text,SFG_HUD_MARGIN,SFG_HUD_MARGIN,SFG_FONT_SIZE_SMALL,textColor,
|
|
drawLen,SFG_GAME_RESOLUTION_X - SFG_HUD_MARGIN);
|
|
}
|
|
|
|
/**
|
|
Draws a number as text on screen, returns the number of characters drawn.
|
|
*/
|
|
uint8_t SFG_drawNumber(
|
|
int16_t number,
|
|
uint16_t x,
|
|
uint16_t y,
|
|
uint8_t size,
|
|
uint8_t color)
|
|
{
|
|
char text[7];
|
|
|
|
text[6] = 0; // terminate the string
|
|
|
|
int8_t positive = 1;
|
|
|
|
if (number < 0)
|
|
{
|
|
positive = 0;
|
|
number *= -1;
|
|
}
|
|
|
|
int8_t position = 5;
|
|
|
|
while (1)
|
|
{
|
|
text[position] = '0' + number % 10;
|
|
number /= 10;
|
|
|
|
position--;
|
|
|
|
if (number == 0 || position == 0)
|
|
break;
|
|
}
|
|
|
|
if (!positive)
|
|
{
|
|
text[position] = '-';
|
|
position--;
|
|
}
|
|
|
|
SFG_drawText(text + position + 1,x,y,size,color,0,0);
|
|
|
|
return 5 - position;
|
|
}
|
|
|
|
/**
|
|
Draws a screen border that indicates something is happening, e.g. being hurt
|
|
or taking an item.
|
|
*/
|
|
void SFG_drawIndicationBorder(uint16_t width, uint8_t color)
|
|
{
|
|
for (int_fast16_t j = 0; j < width; ++j)
|
|
{
|
|
uint16_t j2 = SFG_GAME_RESOLUTION_Y - 1 - j;
|
|
|
|
for (int_fast16_t i = 0; i < SFG_GAME_RESOLUTION_X; ++i)
|
|
{
|
|
if ((i & 0x01) == (j & 0x01))
|
|
{
|
|
SFG_setGamePixel(i,j,color);
|
|
SFG_setGamePixel(i,j2,color);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (int_fast16_t i = 0; i < width; ++i)
|
|
{
|
|
uint16_t i2 = SFG_GAME_RESOLUTION_X - 1 - i;
|
|
|
|
for (int_fast16_t j = width; j < SFG_GAME_RESOLUTION_Y - width; ++j)
|
|
{
|
|
if ((i & 0x01) == (j & 0x01))
|
|
{
|
|
SFG_setGamePixel(i,j,color);
|
|
SFG_setGamePixel(i2,j,color);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
Draws the player weapon, includes handling the shoot animation.
|
|
*/
|
|
void SFG_drawWeapon(int16_t bobOffset)
|
|
{
|
|
uint32_t animationLength =
|
|
RCL_max(SFG_MIN_WEAPON_COOLDOWN_FRAMES,
|
|
SFG_GET_WEAPON_FIRE_COOLDOWN_FRAMES(SFG_player.weapon));
|
|
|
|
uint32_t shotAnimationFrame =
|
|
animationLength - SFG_player.weaponCooldownFrames;
|
|
|
|
bobOffset -= SFG_HUD_BAR_HEIGHT;
|
|
|
|
uint8_t fireType = SFG_GET_WEAPON_FIRE_TYPE(SFG_player.weapon);
|
|
|
|
if (shotAnimationFrame < animationLength)
|
|
{
|
|
if (fireType == SFG_WEAPON_FIRE_TYPE_MELEE)
|
|
{
|
|
bobOffset = shotAnimationFrame < animationLength / 2 ? 0 :
|
|
2 * SFG_WEAPONBOB_OFFSET_PIXELS ;
|
|
}
|
|
else
|
|
{
|
|
bobOffset +=
|
|
((animationLength - shotAnimationFrame) * SFG_WEAPON_IMAGE_SCALE * 20)
|
|
/ animationLength;
|
|
|
|
if (
|
|
((fireType == SFG_WEAPON_FIRE_TYPE_FIREBALL) ||
|
|
(fireType == SFG_WEAPON_FIRE_TYPE_BULLET)) &&
|
|
shotAnimationFrame < animationLength / 2)
|
|
SFG_blitImage(SFG_effectSprites,
|
|
SFG_WEAPON_IMAGE_POSITION_X,
|
|
SFG_WEAPON_IMAGE_POSITION_Y -
|
|
(SFG_TEXTURE_SIZE / 3) * SFG_WEAPON_IMAGE_SCALE + bobOffset,
|
|
SFG_WEAPON_IMAGE_SCALE);
|
|
}
|
|
}
|
|
|
|
SFG_blitImage(SFG_weaponImages + SFG_player.weapon * SFG_TEXTURE_STORE_SIZE,
|
|
SFG_WEAPON_IMAGE_POSITION_X,
|
|
SFG_WEAPON_IMAGE_POSITION_Y + bobOffset - 1,
|
|
SFG_WEAPON_IMAGE_SCALE);
|
|
}
|
|
|
|
uint16_t SFG_textLen(const char *text)
|
|
{
|
|
uint16_t result = 0;
|
|
|
|
while (text[result] != 0)
|
|
result++;
|
|
|
|
return result;
|
|
}
|
|
|
|
static inline uint16_t SFG_characterSize(uint8_t textSize)
|
|
{
|
|
return (SFG_FONT_CHARACTER_SIZE + 1) * textSize;
|
|
}
|
|
|
|
static inline uint16_t
|
|
SFG_textHorizontalSize(const char *text, uint8_t textSize)
|
|
{
|
|
return (SFG_textLen(text) * SFG_characterSize(textSize));
|
|
}
|
|
|
|
void SFG_drawMenu()
|
|
{
|
|
#define BACKGROUND_SCALE (SFG_GAME_RESOLUTION_X / (4 * SFG_TEXTURE_SIZE ) )
|
|
|
|
#if BACKGROUND_SCALE == 0
|
|
#undef BACKGROUND_SCALE
|
|
#define BACKGROUND_SCALE 1
|
|
#endif
|
|
|
|
#define SCROLL_PIXELS_PER_FRAME ((64 * SFG_GAME_RESOLUTION_X) / (8 * SFG_FPS))
|
|
|
|
#if SCROLL_PIXELS_PER_FRAME == 0
|
|
#undef SCROLL_PIXELS_PER_FRAME
|
|
#define SCROLL_PIXELS_PER_FRAME 1
|
|
#endif
|
|
|
|
#define SELECTION_START_X ((SFG_GAME_RESOLUTION_X - 12 * SFG_FONT_SIZE_MEDIUM\
|
|
* (SFG_FONT_CHARACTER_SIZE + 1)) / 2)
|
|
|
|
uint16_t scroll = (SFG_game.frame * SCROLL_PIXELS_PER_FRAME) / 64;
|
|
|
|
for (uint16_t y = 0; y < SFG_GAME_RESOLUTION_Y; ++y)
|
|
for (uint16_t x = 0; x < SFG_GAME_RESOLUTION_X; ++x)
|
|
SFG_setGamePixel(x,y,
|
|
(y >= (SFG_TEXTURE_SIZE * BACKGROUND_SCALE)) ? 0 :
|
|
SFG_getTexel(SFG_backgroundImages,((x + scroll) / BACKGROUND_SCALE)
|
|
% SFG_TEXTURE_SIZE,y / BACKGROUND_SCALE));
|
|
|
|
uint16_t y = SFG_characterSize(SFG_FONT_SIZE_MEDIUM);
|
|
|
|
SFG_blitImage(SFG_logoImage,
|
|
SFG_GAME_RESOLUTION_X / 2 - 16 * SFG_FONT_SIZE_MEDIUM,y,
|
|
SFG_FONT_SIZE_MEDIUM);
|
|
|
|
#if SFG_GAME_RESOLUTION_Y > 50
|
|
y += 32 * SFG_FONT_SIZE_MEDIUM + SFG_characterSize(SFG_FONT_SIZE_MEDIUM);
|
|
#else
|
|
y = 2;
|
|
#endif
|
|
|
|
uint8_t i = 0;
|
|
|
|
while (1) // draw menu items
|
|
{
|
|
uint8_t item = SFG_getMenuItem(i);
|
|
|
|
if (item == SFG_MENU_ITEM_NONE)
|
|
break;
|
|
|
|
#if SFG_GAME_RESOLUTION_Y < 70
|
|
// with low resolution only display the selected item
|
|
|
|
if (i != SFG_game.selectedMenuItem)
|
|
{
|
|
i++;
|
|
continue;
|
|
}
|
|
#endif
|
|
|
|
const char *text = SFG_menuItemTexts[item];
|
|
uint8_t textLen = SFG_textLen(text);
|
|
|
|
uint16_t drawX = (SFG_GAME_RESOLUTION_X -
|
|
SFG_textHorizontalSize(text,SFG_FONT_SIZE_MEDIUM)) / 2;
|
|
|
|
uint8_t textColor = 7;
|
|
|
|
if (i != SFG_game.selectedMenuItem)
|
|
textColor = 23;
|
|
else
|
|
SFG_fillRectangle( // menu item highlight
|
|
SELECTION_START_X,
|
|
y - SFG_FONT_SIZE_MEDIUM,
|
|
SFG_GAME_RESOLUTION_X - SELECTION_START_X * 2,
|
|
SFG_characterSize(SFG_FONT_SIZE_MEDIUM),2);
|
|
|
|
SFG_drawText(text,drawX,y,SFG_FONT_SIZE_MEDIUM,textColor,0,0);
|
|
|
|
if ((item == SFG_MENU_ITEM_PLAY || item == SFG_MENU_ITEM_SOUND
|
|
|| item == SFG_MENU_ITEM_SHEAR) &&
|
|
((i != SFG_game.selectedMenuItem) || SFG_game.blink))
|
|
{
|
|
uint32_t x =
|
|
drawX + SFG_characterSize(SFG_FONT_SIZE_MEDIUM) * (textLen + 1);
|
|
|
|
uint8_t c = 93;
|
|
|
|
if (item == SFG_MENU_ITEM_PLAY)
|
|
SFG_drawNumber(SFG_game.selectedLevel + 1,x,y,SFG_FONT_SIZE_MEDIUM,c);
|
|
else if (item == SFG_MENU_ITEM_SHEAR)
|
|
{
|
|
uint8_t n = (SFG_game.settings >> 2) & 0x03;
|
|
|
|
SFG_drawNumber(n == 3 ? 2 : n,x,y,SFG_FONT_SIZE_MEDIUM,c);
|
|
}
|
|
else
|
|
{
|
|
char settingText[3] = " ";
|
|
|
|
settingText[0] = (SFG_game.settings & 0x01) ? 'S' : ' ';
|
|
settingText[1] = (SFG_game.settings & 0x02) ? 'M' : ' ';
|
|
|
|
SFG_drawText(settingText,x,y,SFG_FONT_SIZE_MEDIUM,c,0,0);
|
|
}
|
|
}
|
|
|
|
y += SFG_characterSize(SFG_FONT_SIZE_MEDIUM) + SFG_FONT_SIZE_MEDIUM;
|
|
i++;
|
|
}
|
|
|
|
SFG_drawText(SFG_VERSION_STRING " CC0",SFG_HUD_MARGIN,SFG_GAME_RESOLUTION_Y -
|
|
SFG_HUD_MARGIN - SFG_FONT_SIZE_SMALL * SFG_FONT_CHARACTER_SIZE,
|
|
SFG_FONT_SIZE_SMALL,4,0,0);
|
|
|
|
#if SFG_OS_IS_MALWARE
|
|
if (SFG_game.blink)
|
|
SFG_drawText(SFG_MALWARE_WARNING,SFG_HUD_MARGIN,SFG_HUD_MARGIN,
|
|
SFG_FONT_SIZE_MEDIUM,95,0,0);
|
|
#endif
|
|
|
|
#undef MAX_ITEMS
|
|
#undef BACKGROUND_SCALE
|
|
#undef SCROLL_PIXELS_PER_FRAME
|
|
}
|
|
|
|
void SFG_drawWinOverlay()
|
|
{
|
|
uint32_t t = RCL_min(SFG_WIN_ANIMATION_DURATION,
|
|
SFG_game.frameTime - SFG_game.stateChangeTime);
|
|
|
|
uint32_t t2 = RCL_min(t,SFG_WIN_ANIMATION_DURATION / 4);
|
|
|
|
#define STRIP_HEIGHT (SFG_GAME_RESOLUTION_Y / 2)
|
|
#define INNER_STRIP_HEIGHT ((STRIP_HEIGHT * 3) / 4)
|
|
#define STRIP_START ((SFG_GAME_RESOLUTION_Y - STRIP_HEIGHT) / 2)
|
|
|
|
RCL_Unit l = (t2 * STRIP_HEIGHT * 4) / SFG_WIN_ANIMATION_DURATION;
|
|
|
|
for (uint16_t y = STRIP_START; y < STRIP_START + l; ++y)
|
|
for (uint16_t x = 0; x < SFG_GAME_RESOLUTION_X; ++x)
|
|
SFG_setGamePixel(x,y,
|
|
RCL_abs(y - (SFG_GAME_RESOLUTION_Y / 2)) <= (INNER_STRIP_HEIGHT / 2) ?
|
|
0 : 172);
|
|
|
|
char textLine[] = "level done";
|
|
|
|
uint16_t y = SFG_GAME_RESOLUTION_Y / 2 -
|
|
((STRIP_HEIGHT + INNER_STRIP_HEIGHT) / 2) / 2;
|
|
|
|
uint16_t x = (SFG_GAME_RESOLUTION_X -
|
|
SFG_textHorizontalSize(textLine,SFG_FONT_SIZE_BIG)) / 2;
|
|
|
|
SFG_drawText(textLine,x,y,SFG_FONT_SIZE_BIG,7 + SFG_game.blink * 95,255,0);
|
|
|
|
uint32_t timeTotal = SFG_SAVE_TOTAL_TIME;
|
|
|
|
// don't show totals in level 1:
|
|
uint8_t blink = (SFG_game.blink) && (SFG_currentLevel.levelNumber != 0)
|
|
&& (timeTotal != 0);
|
|
|
|
if (t >= (SFG_WIN_ANIMATION_DURATION / 2))
|
|
{
|
|
y += (SFG_FONT_SIZE_BIG + SFG_FONT_SIZE_MEDIUM) * SFG_FONT_CHARACTER_SIZE;
|
|
x = SFG_HUD_MARGIN;
|
|
|
|
#define CHAR_SIZE (SFG_FONT_SIZE_SMALL * SFG_FONT_CHARACTER_SIZE)
|
|
|
|
uint32_t time = blink ? timeTotal : SFG_currentLevel.completionTime10sOfS;
|
|
|
|
x += SFG_drawNumber(time / 10,x,y,SFG_FONT_SIZE_SMALL,7) *
|
|
CHAR_SIZE + SFG_FONT_SIZE_SMALL;
|
|
|
|
char timeRest[5] = ".X s";
|
|
|
|
timeRest[1] = '0' + (time % 10);
|
|
|
|
SFG_drawText(timeRest,x,y,SFG_FONT_SIZE_SMALL,7,4,0);
|
|
|
|
x = SFG_HUD_MARGIN;
|
|
y += (SFG_FONT_SIZE_BIG + SFG_FONT_SIZE_MEDIUM) * SFG_FONT_CHARACTER_SIZE;
|
|
|
|
if (blink)
|
|
{
|
|
x += (SFG_drawNumber(SFG_game.save[10] + SFG_game.save[11] * 256,x,y,
|
|
SFG_FONT_SIZE_SMALL,7) + 1) * CHAR_SIZE;
|
|
}
|
|
else
|
|
{
|
|
x += SFG_drawNumber(SFG_currentLevel.monstersDead,x,y,
|
|
SFG_FONT_SIZE_SMALL,7) * CHAR_SIZE;
|
|
|
|
SFG_drawText("/",x,y,SFG_FONT_SIZE_SMALL,7,1,0);
|
|
|
|
x += CHAR_SIZE;
|
|
|
|
x += (SFG_drawNumber(SFG_currentLevel.monsterRecordCount,x,y,
|
|
SFG_FONT_SIZE_SMALL,7) + 1) * CHAR_SIZE;
|
|
}
|
|
|
|
SFG_drawText(SFG_TEXT_KILLS,x,y,SFG_FONT_SIZE_SMALL,7,255,0);
|
|
|
|
if ((t >= (SFG_WIN_ANIMATION_DURATION - 1)) &&
|
|
(SFG_currentLevel.levelNumber != (SFG_NUMBER_OF_LEVELS - 1)))
|
|
{
|
|
y += (SFG_FONT_SIZE_BIG + SFG_FONT_SIZE_MEDIUM) * SFG_FONT_CHARACTER_SIZE;
|
|
|
|
SFG_drawText(SFG_TEXT_SAVE_PROMPT,
|
|
(SFG_GAME_RESOLUTION_X - SFG_textHorizontalSize(SFG_TEXT_SAVE_PROMPT,
|
|
SFG_FONT_SIZE_MEDIUM)) / 2,y,SFG_FONT_SIZE_MEDIUM,7,255,0);
|
|
}
|
|
|
|
#undef CHAR_SIZE
|
|
}
|
|
|
|
#undef STRIP_HEIGHT
|
|
#undef STRIP_START
|
|
#undef INNER_STRIP_HEIGHT
|
|
}
|
|
|
|
void SFG_draw()
|
|
{
|
|
#if SFG_BACKGROUND_BLUR != 0
|
|
SFG_backgroundBlurIndex = 0;
|
|
#endif
|
|
|
|
if (SFG_game.state == SFG_GAME_STATE_MENU)
|
|
{
|
|
SFG_drawMenu();
|
|
return;
|
|
}
|
|
|
|
if (SFG_game.state == SFG_GAME_STATE_INTRO ||
|
|
SFG_game.state == SFG_GAME_STATE_OUTRO)
|
|
{
|
|
SFG_drawStoryText();
|
|
return;
|
|
}
|
|
|
|
if (SFG_keyIsDown(SFG_KEY_MAP) || (SFG_game.state == SFG_GAME_STATE_MAP))
|
|
{
|
|
SFG_drawMap();
|
|
}
|
|
else
|
|
{
|
|
for (int_fast16_t i = 0; i < SFG_Z_BUFFER_SIZE; ++i)
|
|
SFG_game.zBuffer[i] = 255;
|
|
|
|
int16_t weaponBobOffset = 0;
|
|
|
|
#if SFG_HEADBOB_ENABLED
|
|
RCL_Unit headBobOffset = 0;
|
|
|
|
#if SFG_HEADBOB_SHEAR != 0
|
|
int16_t headBobShearOffset = 0;
|
|
#endif
|
|
|
|
if (SFG_game.state != SFG_GAME_STATE_LOSE)
|
|
{
|
|
RCL_Unit bobSin = RCL_sin(SFG_player.headBobFrame);
|
|
|
|
headBobOffset = (bobSin * SFG_HEADBOB_OFFSET) / RCL_UNITS_PER_SQUARE;
|
|
|
|
#if SFG_HEADBOB_SHEAR != 0
|
|
headBobShearOffset = (bobSin * SFG_HEADBOB_SHEAR) / RCL_UNITS_PER_SQUARE;
|
|
SFG_player.camera.shear += headBobShearOffset;
|
|
#endif
|
|
|
|
weaponBobOffset =
|
|
(bobSin * SFG_WEAPONBOB_OFFSET_PIXELS) / (RCL_UNITS_PER_SQUARE) +
|
|
SFG_WEAPONBOB_OFFSET_PIXELS;
|
|
}
|
|
else
|
|
{
|
|
// player die animation
|
|
|
|
int32_t t = SFG_game.frameTime - SFG_game.stateChangeTime;
|
|
|
|
weaponBobOffset = (SFG_WEAPON_IMAGE_SCALE * SFG_TEXTURE_SIZE * t) /
|
|
SFG_LOSE_ANIMATION_DURATION;
|
|
}
|
|
|
|
// add head bob just for the rendering (we'll will substract it back later)
|
|
|
|
SFG_player.camera.height += headBobOffset;
|
|
#endif // headbob enabled?
|
|
|
|
RCL_renderComplex(
|
|
SFG_player.camera,
|
|
SFG_floorHeightAt,
|
|
SFG_ceilingHeightAt,
|
|
SFG_texturesAt,
|
|
SFG_game.rayConstraints);
|
|
|
|
// draw sprites:
|
|
|
|
// monster sprites:
|
|
for (int_fast16_t i = 0; i < SFG_currentLevel.monsterRecordCount; ++i)
|
|
{
|
|
SFG_MonsterRecord m = SFG_currentLevel.monsterRecords[i];
|
|
uint8_t state = SFG_MR_STATE(m);
|
|
|
|
if (state != SFG_MONSTER_STATE_INACTIVE)
|
|
{
|
|
RCL_Vector2D worldPosition;
|
|
|
|
worldPosition.x = SFG_MONSTER_COORD_TO_RCL_UNITS(m.coords[0]);
|
|
worldPosition.y = SFG_MONSTER_COORD_TO_RCL_UNITS(m.coords[1]);
|
|
|
|
uint8_t spriteSize = SFG_GET_MONSTER_SPRITE_SIZE(
|
|
SFG_MONSTER_TYPE_TO_INDEX(SFG_MR_TYPE(m)));
|
|
|
|
RCL_Unit worldHeight =
|
|
SFG_floorHeightAt(
|
|
SFG_MONSTER_COORD_TO_SQUARES(m.coords[0]),
|
|
SFG_MONSTER_COORD_TO_SQUARES(m.coords[1]))
|
|
+ SFG_SPRITE_SIZE_TO_HEIGHT_ABOVE_GROUND(spriteSize);
|
|
|
|
RCL_PixelInfo p =
|
|
RCL_mapToScreen(worldPosition,worldHeight,SFG_player.camera);
|
|
|
|
if (p.depth > 0 &&
|
|
SFG_spriteIsVisible(worldPosition,worldHeight,spriteSize))
|
|
{
|
|
const uint8_t *s =
|
|
SFG_getMonsterSprite(
|
|
SFG_MR_TYPE(m),
|
|
state,
|
|
SFG_game.spriteAnimationFrame & 0x01);
|
|
|
|
SFG_drawScaledSprite(s,
|
|
p.position.x * SFG_RAYCASTING_SUBSAMPLE,p.position.y,
|
|
RCL_perspectiveScaleVertical(
|
|
SFG_SPRITE_SIZE_PIXELS(spriteSize),
|
|
p.depth),
|
|
p.depth / (RCL_UNITS_PER_SQUARE * 2),p.depth);
|
|
}
|
|
}
|
|
}
|
|
|
|
// item sprites:
|
|
for (int_fast16_t i = 0; i < SFG_currentLevel.itemRecordCount; ++i)
|
|
if (SFG_currentLevel.itemRecords[i] & SFG_ITEM_RECORD_ACTIVE_MASK)
|
|
{
|
|
RCL_Vector2D worldPosition;
|
|
|
|
SFG_LevelElement e =
|
|
SFG_currentLevel.levelPointer->elements[
|
|
SFG_currentLevel.itemRecords[i] & ~SFG_ITEM_RECORD_ACTIVE_MASK];
|
|
|
|
worldPosition.x =
|
|
SFG_ELEMENT_COORD_TO_RCL_UNITS(e.coords[0]);
|
|
|
|
worldPosition.y =
|
|
SFG_ELEMENT_COORD_TO_RCL_UNITS(e.coords[1]);
|
|
|
|
const uint8_t *sprite;
|
|
uint8_t spriteSize;
|
|
|
|
SFG_getItemSprite(e.type,&sprite,&spriteSize);
|
|
|
|
if (sprite != 0)
|
|
{
|
|
RCL_Unit worldHeight = SFG_floorHeightAt(e.coords[0],e.coords[1])
|
|
+ SFG_SPRITE_SIZE_TO_HEIGHT_ABOVE_GROUND(spriteSize);
|
|
|
|
RCL_PixelInfo p =
|
|
RCL_mapToScreen(worldPosition,worldHeight,SFG_player.camera);
|
|
|
|
if (p.depth > 0 &&
|
|
SFG_spriteIsVisible(worldPosition,worldHeight,spriteSize))
|
|
SFG_drawScaledSprite(sprite,p.position.x * SFG_RAYCASTING_SUBSAMPLE,
|
|
p.position.y,
|
|
RCL_perspectiveScaleVertical(SFG_SPRITE_SIZE_PIXELS(spriteSize),
|
|
p.depth),p.depth / (RCL_UNITS_PER_SQUARE * 2),p.depth);
|
|
}
|
|
}
|
|
|
|
// projectile sprites:
|
|
for (uint8_t i = 0; i < SFG_currentLevel.projectileRecordCount; ++i)
|
|
{
|
|
SFG_ProjectileRecord *proj = &(SFG_currentLevel.projectileRecords[i]);
|
|
|
|
if (proj->type == SFG_PROJECTILE_BULLET)
|
|
continue; // bullets aren't drawn
|
|
|
|
RCL_Vector2D worldPosition;
|
|
|
|
worldPosition.x = proj->position[0];
|
|
worldPosition.y = proj->position[1];
|
|
|
|
RCL_PixelInfo p =
|
|
RCL_mapToScreen(worldPosition,proj->position[2],SFG_player.camera);
|
|
|
|
const uint8_t *s =
|
|
SFG_effectSprites + proj->type * SFG_TEXTURE_STORE_SIZE;
|
|
|
|
int16_t spriteSize = SFG_SPRITE_SIZE_PIXELS(0);
|
|
|
|
if (proj->type == SFG_PROJECTILE_EXPLOSION ||
|
|
proj->type == SFG_PROJECTILE_DUST)
|
|
{
|
|
int16_t doubleFramesToLive =
|
|
RCL_nonZero(SFG_GET_PROJECTILE_FRAMES_TO_LIVE(proj->type) / 2);
|
|
|
|
// grow the explosion/dust sprite as an animation
|
|
spriteSize = (
|
|
SFG_SPRITE_SIZE_PIXELS(2) *
|
|
RCL_sin(
|
|
((doubleFramesToLive -
|
|
proj->doubleFramesToLive) * RCL_UNITS_PER_SQUARE / 4)
|
|
/ doubleFramesToLive)
|
|
) / RCL_UNITS_PER_SQUARE;
|
|
}
|
|
|
|
if (p.depth > 0 &&
|
|
SFG_spriteIsVisible(worldPosition,proj->position[2],spriteSize))
|
|
SFG_drawScaledSprite(s,
|
|
p.position.x * SFG_RAYCASTING_SUBSAMPLE,p.position.y,
|
|
RCL_perspectiveScaleVertical(spriteSize,p.depth),
|
|
SFG_fogValueDiminish(p.depth),
|
|
p.depth);
|
|
}
|
|
|
|
#if SFG_HEADBOB_ENABLED
|
|
// after rendering sprites substract back the head bob offset
|
|
SFG_player.camera.height -= headBobOffset;
|
|
|
|
#if SFG_HEADBOB_SHEAR != 0
|
|
SFG_player.camera.shear -= headBobShearOffset;
|
|
#endif
|
|
|
|
#endif // head bob enabled?
|
|
|
|
#if SFG_PREVIEW_MODE == 0
|
|
SFG_drawWeapon(weaponBobOffset);
|
|
#endif
|
|
|
|
// draw HUD:
|
|
|
|
// bar
|
|
|
|
uint8_t color = 61;
|
|
|
|
for (uint16_t j = SFG_GAME_RESOLUTION_Y - SFG_HUD_BAR_HEIGHT;
|
|
j < SFG_GAME_RESOLUTION_Y; ++j)
|
|
{
|
|
for (uint16_t i = 0; i < SFG_GAME_RESOLUTION_X; ++i)
|
|
SFG_setGamePixel(i,j,color);
|
|
|
|
color = 48;
|
|
}
|
|
|
|
#define TEXT_Y (SFG_GAME_RESOLUTION_Y - SFG_HUD_MARGIN - \
|
|
SFG_FONT_CHARACTER_SIZE * SFG_FONT_SIZE_MEDIUM)
|
|
|
|
SFG_drawNumber( // health
|
|
SFG_player.health,
|
|
SFG_HUD_MARGIN,
|
|
TEXT_Y,
|
|
SFG_FONT_SIZE_MEDIUM,
|
|
SFG_player.health > SFG_PLAYER_HEALTH_WARNING_LEVEL ? 6 : 175);
|
|
|
|
SFG_drawNumber( // ammo
|
|
SFG_player.weapon != SFG_WEAPON_KNIFE ?
|
|
SFG_player.ammo[SFG_weaponAmmo(SFG_player.weapon)] : 0,
|
|
SFG_GAME_RESOLUTION_X - SFG_HUD_MARGIN -
|
|
(SFG_FONT_CHARACTER_SIZE + 1) * SFG_FONT_SIZE_MEDIUM * 3,
|
|
TEXT_Y,
|
|
SFG_FONT_SIZE_MEDIUM,
|
|
6);
|
|
|
|
for (uint8_t i = 0; i < 3; ++i) // access cards
|
|
if (
|
|
((SFG_player.cards >> i) | ((SFG_player.cards >> (i + 3))
|
|
& SFG_game.blink)) & 0x01)
|
|
SFG_fillRectangle(
|
|
SFG_HUD_MARGIN + (SFG_FONT_CHARACTER_SIZE + 1) *
|
|
SFG_FONT_SIZE_MEDIUM * (5 + i),
|
|
TEXT_Y,
|
|
SFG_FONT_SIZE_MEDIUM * SFG_FONT_CHARACTER_SIZE,
|
|
SFG_FONT_SIZE_MEDIUM * SFG_FONT_CHARACTER_SIZE,
|
|
i == 0 ? 93 : (i == 1 ? 124 : 60));
|
|
|
|
#undef TEXT_Y
|
|
|
|
// border indicator
|
|
|
|
if ((SFG_game.frame - SFG_player.lastHurtFrame
|
|
<= SFG_HUD_BORDER_INDICATOR_DURATION_FRAMES) ||
|
|
(SFG_game.state == SFG_GAME_STATE_LOSE))
|
|
SFG_drawIndicationBorder(SFG_HUD_BORDER_INDICATOR_WIDTH_PIXELS,
|
|
SFG_HUD_HURT_INDICATION_COLOR);
|
|
else if (SFG_game.frame - SFG_player.lastItemTakenFrame
|
|
<= SFG_HUD_BORDER_INDICATOR_DURATION_FRAMES)
|
|
SFG_drawIndicationBorder(SFG_HUD_BORDER_INDICATOR_WIDTH_PIXELS,
|
|
SFG_HUD_ITEM_TAKEN_INDICATION_COLOR);
|
|
|
|
if (SFG_game.state == SFG_GAME_STATE_WIN)
|
|
SFG_drawWinOverlay();
|
|
else if (SFG_game.state == SFG_GAME_STATE_LEVEL_START)
|
|
SFG_drawLevelStartOverlay();
|
|
}
|
|
}
|
|
|
|
uint8_t SFG_mainLoopBody()
|
|
{
|
|
/* Standard deterministic game loop, independed of actual achieved FPS.
|
|
Each game logic (physics) frame is performed with the SFG_MS_PER_FRAME
|
|
delta time. */
|
|
|
|
if (SFG_game.state != SFG_GAME_STATE_INIT)
|
|
{
|
|
uint32_t timeNow = SFG_getTimeMs();
|
|
|
|
#if SFG_TIME_MULTIPLIER != 1024
|
|
timeNow = (timeNow * SFG_TIME_MULTIPLIER) / 1024;
|
|
#endif
|
|
|
|
int32_t timeSinceLastFrame = timeNow - SFG_game.frameTime;
|
|
|
|
if (timeSinceLastFrame >= SFG_MS_PER_FRAME)
|
|
{
|
|
uint8_t steps = 0;
|
|
|
|
uint8_t wasFirstFrame = SFG_game.frame == 0;
|
|
|
|
while (timeSinceLastFrame >= SFG_MS_PER_FRAME)
|
|
{
|
|
uint8_t previousWeapon = SFG_player.weapon;
|
|
|
|
SFG_game.frameTime += SFG_MS_PER_FRAME;
|
|
|
|
SFG_gameStep();
|
|
|
|
if (SFG_player.weapon != previousWeapon)
|
|
SFG_processEvent(SFG_EVENT_PLAYER_CHANGES_WEAPON,SFG_player.weapon);
|
|
|
|
timeSinceLastFrame -= SFG_MS_PER_FRAME;
|
|
|
|
SFG_game.frame++;
|
|
steps++;
|
|
}
|
|
|
|
if ((steps > 1) && (SFG_game.antiSpam == 0) && (!wasFirstFrame))
|
|
{
|
|
SFG_LOG("failed to reach target FPS! consider setting a lower value")
|
|
SFG_game.antiSpam = 30;
|
|
}
|
|
|
|
if (SFG_game.antiSpam > 0)
|
|
SFG_game.antiSpam--;
|
|
|
|
// render only once
|
|
SFG_draw();
|
|
|
|
if (SFG_game.frame % 16 == 0)
|
|
SFG_CPU_LOAD(((SFG_getTimeMs() - timeNow) * 100) / SFG_MS_PER_FRAME);
|
|
}
|
|
else
|
|
{
|
|
// wait, relieve CPU
|
|
SFG_sleepMs(RCL_max(1,
|
|
(3 * (SFG_game.frameTime + SFG_MS_PER_FRAME - timeNow)) / 4));
|
|
}
|
|
}
|
|
else if (!SFG_keyPressed(SFG_KEY_A) && !SFG_keyPressed(SFG_KEY_B))
|
|
{
|
|
/* At the beginning we have to wait for the release of the keys in order not
|
|
to immediatelly confirm a menu item. */
|
|
SFG_setGameState(SFG_GAME_STATE_MENU);
|
|
}
|
|
|
|
return SFG_game.continues;
|
|
}
|
|
|
|
#undef SFG_SAVE_TOTAL_TIME
|
|
|
|
#endif // guard
|