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character: add ability to specify spritesheet wide pixel offset

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Sebastian Krzyszkowiak 2018-07-29 00:41:14 +02:00
parent 3c3730f9d5
commit c337e3435f
2 changed files with 6 additions and 1 deletions
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5
src/character.c
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@ -240,6 +240,9 @@ SYMBOL_EXPORT void RegisterSpritesheet(struct Game* game, struct Character* char
s->pivotX = strtodnull(al_get_config_value(config, "pivot", "x"), 0.5);
s->pivotY = strtodnull(al_get_config_value(config, "pivot", "y"), 0.5);
s->offsetX = strtolnull(al_get_config_value(config, "offset", "x"), 0);
s->offsetY = strtolnull(al_get_config_value(config, "offset", "y"), 0);
s->frames = malloc(sizeof(struct SpritesheetFrame) * s->frameCount);
for (int i = 0; i < s->frameCount; i++) {
@ -476,7 +479,7 @@ SYMBOL_EXPORT ALLEGRO_TRANSFORM GetCharacterTransform(struct Game* game, struct
al_scale_transform(&transform, ((character->flipX ^ character->spritesheet->flipX ^ character->frame->flipX) ? -1 : 1), ((character->flipY ^ character->spritesheet->flipY ^ character->frame->flipY) ? -1 : 1)); // flipping; FIXME: should it be here or later?
al_translate_transform(&transform, w / 2.0, h / 2.0);
al_translate_transform(&transform, character->spritesheet->frames[character->pos].x, character->spritesheet->frames[character->pos].y); // spritesheet frame offset
al_translate_transform(&transform, character->spritesheet->offsetX + character->spritesheet->frames[character->pos].x, character->spritesheet->offsetY + character->spritesheet->frames[character->pos].y); // spritesheet frame offset
al_translate_transform(&transform, -w * character->spritesheet->pivotX, -h * character->spritesheet->pivotY); // pivot
al_scale_transform(&transform, character->scaleX, character->scaleY);
al_rotate_transform(&transform, character->angle);

2
src/character.h
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@ -53,6 +53,8 @@ struct Spritesheet {
bool reversed;
double pivotX;
double pivotY;
int offsetX;
int offsetY;
bool flipX;
bool flipY;
struct SpritesheetFrame* frames;