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Add random

This commit is contained in:
Miloslav Číž 2019-10-18 16:34:51 +02:00
parent 41de9f66c8
commit 58e253ee08
2 changed files with 33 additions and 22 deletions
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11
constants.h
View File

@ -55,14 +55,9 @@
#define SFG_LEVEL_ELEMENT_ACTIVE_DISTANCE 8
/**
Time interval in ms after which AI will be updating (which also affects
speed of monster animation etc).
Rate at which AI will be updated, which also affects how fast enemies will
appear.
*/
#define SFG_AI_UPDATE_INTERVAL 300
/**
Normal movement speed of monsters, in squares per second.
*/
#define SFG_MONSTER_MOVEMENT_SPEED 2
#define SFG_AI_FPS 5
#endif // guard

44
main.c
View File

@ -278,34 +278,28 @@ typedef struct
#define SFG_MONSTER_STATE_GOING_N 5
#define SFG_MONSTER_STATE_GOING_NE 6
#define SFG_MONSTER_STATE_GOING_E 7
#define SFG_MONSTER_STATE_GOING_SW 8
#define SFG_MONSTER_STATE_GOING_SE 8
#define SFG_MONSTER_STATE_GOING_S 9
#define SFG_MONSTER_STATE_GOING_SW 10
#define SFG_MONSTER_STATE_GOING_W 11
#define SFG_MONSTER_STATE_GOING_NW 12
#define SFG_MONSTER_STATE_GOING_N 13
#define SFG_MAX_MONSTERS 64
#define SFG_AI_UPDATE_FRAME_INTERVAL \
(SFG_AI_UPDATE_INTERVAL / SFG_MS_PER_FRAME)
(SFG_FPS / SFG_AI_FPS)
#if SFG_AI_UPDATE_FRAME_INTERVAL == 0
#define SFG_AI_UPDATE_FRAME_INTERVAL 1
#endif
#define SFG_MONSTER_MOVE_UNITS_PER_FRAME \
(((SFG_MONSTER_MOVEMENT_SPEED * SFG_AI_UPDATE_FRAME_INTERVAL * 4) / SFG_FPS))
#if SFG_MONSTER_MOVE_UNITS_PER_FRAME == 0
#define SFG_MONSTER_MOVE_UNITS_PER_FRAME 1
#endif
/*
GLOBAL VARIABLES
===============================================================================
*/
uint8_t SFG_currentRandom;
struct
{
RCL_Camera camera;
@ -403,6 +397,19 @@ SFG_PROGRAM_MEMORY uint8_t SFG_ditheringPatterns[] =
===============================================================================
*/
/**
Returns a pseudorandom byte. This is a 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_currentRandom *= 13;
SFG_currentRandom += 7;
return SFG_currentRandom;
}
/**
Says whether given key is currently pressed (down). This should be preferred
to SFG_keyPressed().
@ -866,6 +873,8 @@ void SFG_setAndInitLevel(const SFG_Level *level)
{
SFG_LOG("setting and initializing level");
SFG_currentRandom = 0;
SFG_currentLevel.levelPointer = level;
SFG_currentLevel.floorColor = level->floorColor;
@ -962,6 +971,8 @@ void SFG_init()
SFG_gameFrame = 0;
SFG_currentRandom = 0;
RCL_initRayConstraints(&SFG_rayConstraints);
SFG_rayConstraints.maxHits = SFG_RAYCASTING_MAX_HITS;
@ -1006,12 +1017,12 @@ void SFG_monsterPerformAI(SFG_MonsterRecord *monster)
switch (state)
{
case SFG_MONSTER_STATE_GOING_E:
coordAdd[0] = SFG_MONSTER_MOVE_UNITS_PER_FRAME;
coordAdd[0] = 1;
state = SFG_MONSTER_STATE_GOING_W;
break;
case SFG_MONSTER_STATE_GOING_W:
coordAdd[0] = -1 * SFG_MONSTER_MOVE_UNITS_PER_FRAME;
coordAdd[0] = -1;
state = SFG_MONSTER_STATE_GOING_E;
break;
@ -1020,10 +1031,14 @@ void SFG_monsterPerformAI(SFG_MonsterRecord *monster)
}
}
monster->stateType = state | type;
monster->coords[0] += coordAdd[0];
monster->coords[1] += coordAdd[1];
}
@ -1331,8 +1346,9 @@ void SFG_gameStep()
SFG_currentLevel.checkedMonsterIndex = 0;
}
if (((SFG_gameFrame - SFG_currentLevel.frameStart) %
SFG_AI_UPDATE_FRAME_INTERVAL) == 0)
if ((SFG_gameFrame - SFG_currentLevel.frameStart) %
SFG_AI_UPDATE_FRAME_INTERVAL == 0)
for (uint8_t i = 0; i < SFG_currentLevel.monsterRecordCount; ++i)
if (SFG_currentLevel.monsterRecords[i].stateType !=
SFG_MONSTER_STATE_INACTIVE)