mirror of https://gitlab.com/drummyfish/anarch
Add terminal frontend
Miloslav Číž
3 years ago
parent
535155a60d
commit
ffe5dda22e
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/**
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@file main_pokitto.cpp
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This is Linux terminal implementation of the game front end. This needs root
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priviledges (sudo) to work! This frontend is more of an experiment, don't
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expect it to work perfectly and everywhere.
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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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#include <stdint.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <linux/input.h>
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#include <stdio.h>
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#include <sys/time.h>
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#include <time.h>
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#define SFG_SCREEN_RESOLUTION_X 95
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#define SFG_SCREEN_RESOLUTION_Y 43
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#define SFG_DITHERED_SHADOW 1
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#define SFG_FPS 20
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#include "game.h"
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#define NEWLINES 10
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#define SCREENSIZE \
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(NEWLINES + (SFG_SCREEN_RESOLUTION_X + 1) * SFG_SCREEN_RESOLUTION_Y)
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char screen[SCREENSIZE];
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const char shades[] = // adjust according to your terminal
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{
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' ','.','-',':','\\','h','M','@', // grey
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'`','.',',',';','/','r','=','n' // non-grey
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};
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uint32_t timeStart;
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typedef struct
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{
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struct timeval time;
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__u16 type;
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__u16 code;
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__s32 value;
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} InputEvent;
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InputEvent event;
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#define TOTAL_KEYS 9
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uint16_t keyCodes[TOTAL_KEYS] =
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{
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KEY_W,
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KEY_S,
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KEY_A,
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KEY_D,
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KEY_SPACE,
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KEY_H,
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KEY_J,
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KEY_K,
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KEY_Q
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};
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uint8_t keyStates[TOTAL_KEYS];
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uint32_t getTime()
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{
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struct timeval now;
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gettimeofday(&now, NULL);
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return now.tv_sec * 1000 + now.tv_usec / 1000;
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}
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void SFG_setPixel(uint16_t x, uint16_t y, uint8_t colorIndex)
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{
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screen[NEWLINES + y * (SFG_SCREEN_RESOLUTION_X + 1) + x] =
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shades[(colorIndex > 7) * 8 + colorIndex % 8];
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}
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uint32_t SFG_getTimeMs()
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{
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clock_t timeNow = clock();
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return getTime() - timeStart;
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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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}
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uint8_t SFG_load(uint8_t data[SFG_SAVE_SIZE])
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{
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return 0;
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}
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void SFG_sleepMs(uint16_t timeMs)
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{
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usleep(timeMs * 1000);
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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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}
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int8_t SFG_keyPressed(uint8_t key)
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{
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switch (key)
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{
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case SFG_KEY_UP: return keyStates[0]; break;
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case SFG_KEY_RIGHT: return keyStates[3]; break;
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case SFG_KEY_DOWN: return keyStates[1]; break;
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case SFG_KEY_LEFT: return keyStates[2]; break;
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case SFG_KEY_A: return keyStates[5]; break;
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case SFG_KEY_B: return keyStates[6]; break;
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case SFG_KEY_C: return keyStates[7]; break;
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case SFG_KEY_MAP: return keyStates[8]; break;
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default: return 0; break;
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}
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}
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void SFG_enableMusic(uint8_t enable)
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{
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}
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void SFG_playSound(uint8_t soundIndex, uint8_t volume)
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{
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}
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int nextFlush = 0;
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int main()
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{
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int devFile;
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timeStart = getTime();
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devFile = open("/dev/input/event0", O_RDONLY);
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fcntl(devFile, F_SETFL, O_NONBLOCK);
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SFG_init();
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for (uint16_t i = 0; i < TOTAL_KEYS; ++i)
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keyStates[i] = 0;
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for (uint16_t i = 0; i < NEWLINES; ++i)
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screen[i] = '\n';
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for (uint16_t i = 1; i <= SFG_SCREEN_RESOLUTION_Y; ++i)
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screen[NEWLINES + i * (SFG_SCREEN_RESOLUTION_X + 1) - 1] = '\n';
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setvbuf(stdout, NULL, _IOFBF, SCREENSIZE + 1);
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while (1)
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{
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while (1)
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{
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int n = read(devFile, &event, sizeof(event));
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if (n <= 0)
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break;
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if (event.type == EV_KEY && (event.value == 1 || event.value == 0))
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{
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for (uint8_t i = 0; i < TOTAL_KEYS; ++i)
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if (event.code == keyCodes[i])
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{
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keyStates[i] = event.value;
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break;
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}
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}
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}
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uint32_t t = SFG_getTimeMs();
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if (t >= nextFlush)
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{
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puts(screen);
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fflush(stdout);
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nextFlush = t + 200; // 5 rendering FPS
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}
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if (!SFG_mainLoopBody())
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break;
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}
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}
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