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Move some of the sprite math out of the actor into the sprite

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Andrew Kesterson
2026-05-12 15:21:36 -04:00
parent 0f01126bad
commit 5439b8004b
4 changed files with 38 additions and 12 deletions
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21
src/sprite.c
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@@ -13,6 +13,27 @@
#include <akgl/staticstring.h>
#include <akgl/iterator.h>
akerr_ErrorContext *akgl_sprite_sheet_coords_for_frame(akgl_Sprite *self, SDL_FRect *srccoords, uint8_t frameid)
{
PREPARE_ERROR(e);
FAIL_ZERO_RETURN(e, self, AKERR_NULLPOINTER, "NULL sprite");
FAIL_ZERO_RETURN(e, srccoords, AKERR_NULLPOINTER, "NULL SDL_Rect");
FAIL_ZERO_RETURN(e, self->sheet, AKERR_NULLPOINTER, "NULL spritesheet");
srccoords->x = self->width * self->frameids[frameid];
if ( srccoords->x >= self->sheet->texture->w ) {
srccoords->y = ((int)srccoords->x / self->sheet->texture->w) * self->height;
srccoords->x = ((int)srccoords->x % self->sheet->texture->w);
} else {
srccoords->y = 0;
}
srccoords->w = self->width;
srccoords->h = self->height;
SUCCEED_RETURN(e);
}
static akerr_ErrorContext *akgl_sprite_load_json_spritesheet(json_t *json, akgl_SpriteSheet **sheet, char *relative_path)
{
PREPARE_ERROR(errctx);