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feat(animation): animation sprite loop mode implemented

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This commit is contained in:
Sara 2023-11-24 19:06:51 +01:00
parent 05334eb8ee
commit c1a043c4a7
2 changed files with 26 additions and 4 deletions
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28
core/src/animation_sprite.c
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@ -12,13 +12,13 @@ struct AnimationSprite {
float start_time; float start_time;
}; };
AnimationSprite* animation_sprite_new(Sprite* target_sprite, Spritesheet* sheet, float framerate) { AnimationSprite* animation_sprite_new(Sprite* target_sprite, Spritesheet* sheet, float framerate, AnimationSpriteLoopMode loop_mode) {
AnimationSprite* self = malloc(sizeof(AnimationSprite)); AnimationSprite* self = malloc(sizeof(AnimationSprite));
ASSERT_RETURN(self != NULL, NULL, "Failed to allocate memory for AnimationSprite"); ASSERT_RETURN(self != NULL, NULL, "Failed to allocate memory for AnimationSprite");
*self = (AnimationSprite){ *self = (AnimationSprite){
.sheet = sheet, .sheet = sheet,
.frame_interval = 1.0f / framerate, .frame_interval = 1.0f / framerate,
.loop_mode = LoopMode_Stop, .loop_mode = loop_mode,
.start_time = game_time(), .start_time = game_time(),
.sprite_target = target_sprite .sprite_target = target_sprite
}; };
@ -36,8 +36,30 @@ void animation_sprite_play_from(AnimationSprite* self, float normalized_time) {
} }
void animation_sprite_draw(AnimationSprite* self, Transform* transform) { void animation_sprite_draw(AnimationSprite* self, Transform* transform) {
const size_t frame_count = spritesheet_get_tile_count(self->sheet);
const float time = game_time() - self->start_time; const float time = game_time() - self->start_time;
const size_t frame = time / self->frame_interval;
size_t frame = time / self->frame_interval;
switch(self->loop_mode) {
case LoopMode_Hide:
if(frame >= frame_count)
return;
else
break;
case LoopMode_Loop:
frame %= frame_count;
break;
case LoopMode_PingPong:
frame %= frame_count * 2;
if(frame >= frame_count)
frame = frame_count - (frame - frame_count);
return;
case LoopMode_Stop:
if(frame >= frame_count)
frame = frame_count - 1;
}
sprite_set_spritesheet(self->sprite_target, self->sheet); sprite_set_spritesheet(self->sprite_target, self->sheet);
sprite_set_tile(self->sprite_target, frame); sprite_set_tile(self->sprite_target, frame);
sprite_draw(self->sprite_target, *transform); sprite_draw(self->sprite_target, *transform);

2
core/src/animation_sprite.h
View file

@ -13,7 +13,7 @@ typedef enum AnimationSpriteLoopMode {
typedef struct AnimationSprite AnimationSprite; typedef struct AnimationSprite AnimationSprite;
extern AnimationSprite* animation_sprite_new(Sprite* target_sprite, Spritesheet* sheet, float framerate); extern AnimationSprite* animation_sprite_new(Sprite* target_sprite, Spritesheet* sheet, float framerate, AnimationSpriteLoopMode loop_mode);
extern void animation_sprite_destroy(AnimationSprite* self); extern void animation_sprite_destroy(AnimationSprite* self);
extern void animation_sprite_play_from(AnimationSprite* self, float normalized_time); extern void animation_sprite_play_from(AnimationSprite* self, float normalized_time);