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IsOnCharacter: support flipped characters

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This commit is contained in:
Sebastian Krzyszkowiak 2018-04-10 05:18:29 +02:00
parent 88b4399cae
commit d017956442
1 changed files with 14 additions and 3 deletions
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17
src/character.c
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@ -489,9 +489,13 @@ SYMBOL_EXPORT bool IsOnCharacter(struct Game* game, struct Character* character,
}
int w = character->spritesheet->width, h = character->spritesheet->height;
//float x1 = GetCharacterX(game, character), y1 = GetCharacterY(game, character);
float x1 = 0, y1 = 0;
float x2 = x1 + w, y2 = y1 + h;
//x -= GetCharacterX(game, character);
//y -= GetCharacterY(game, character);
float x1 = GetCharacterX(game, character) - (w / 2) * fabs(character->scaleX), y1 = GetCharacterY(game, character) - (h / 2) * fabs(character->scaleY);
float x2 = x1 + w * fabs(character->scaleX), y2 = y1 + h * fabs(character->scaleY);
//PrintConsole(game, "character %s x %f y %f; %fx%f; %fx%f -> %fx%f", character->name, x, y, character->scaleX, character->scaleY, x1, y1, x2, y2);
/* float scalex = character->scaleX;
float scaley = character->scaleY;
@ -514,10 +518,17 @@ SYMBOL_EXPORT bool IsOnCharacter(struct Game* game, struct Character* character,
bool test = ((x >= x1) && (x <= x2) && (y >= y1) && (y <= y2));
//al_transform_coordinates(&transform, &x, &y);
if (test && pixelperfect) {
x -= x1;
y -= y1;
x /= fabs(character->scaleX);
y /= fabs(character->scaleY);
if (character->flipX) {
x = w - x;
}
if (character->flipY) {
y = h - y;
}
ALLEGRO_COLOR color = al_get_pixel(character->frame->bitmap, x, y);
return (color.a > 0.0);
}