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IsOnCharacter: properly support subbitmaps (for instance spritesheets)

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Sebastian Krzyszkowiak 2019-02-01 05:45:26 +01:00
parent 10164293ba
commit 9e0a1ddb36
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GPG key ID: E8F235CF3BDBC3FF
1 changed files with 5 additions and 1 deletions
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6
src/character.c
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@ -644,7 +644,11 @@ SYMBOL_EXPORT bool IsOnCharacter(struct Game* game, struct Character* character,
if (test && pixelperfect) {
al_invert_transform(&transform);
al_transform_coordinates(&transform, &x, &y);
ALLEGRO_COLOR color = al_get_pixel(character->frame->bitmap, (int)x - character->spritesheet->frames[character->pos].x, (int)y - character->spritesheet->frames[character->pos].y);
int xpos = (int)x - character->spritesheet->frames[character->pos].x, ypos = (int)y - character->spritesheet->frames[character->pos].y;
if (xpos < 0 || ypos < 0 || xpos >= al_get_bitmap_width(character->frame->bitmap) || ypos >= al_get_bitmap_height(character->frame->bitmap)) {
return false;
}
ALLEGRO_COLOR color = al_get_pixel(character->frame->bitmap, xpos, ypos);
return (color.a > 0.0);
}