1 files changed, 68 insertions, 0 deletions
diff --git a/spawner.c b/spawner.c
new file mode 100644
index 0000000..058a894
--- /dev/null
+++ b/spawner.c
@@ -0,0 +1,68 @@
+#include "animation.h"
+#include "components.h"
+#include "enemy.h"
+#include "world.h"
+
+int new_spawner(
+	World* world,
+	int x,
+	int y
+) {
+	Entity e;
+	CPosition* pos;
+	CSprite* sprite;
+	CAnimated* animated;
+
+	e = new_entity(world);
+	add_components(
+		world,
+		e,
+		ctype_sprite |
+		ctype_position |
+		ctype_animated |
+		ctype_spawner
+	);
+
+	pos = &world->positions[e];
+	sprite = &world->sprites[e];
+	animated = &world->animateds[e];
+
+	pos->x = x;
+	pos->y = y;
+
+	sprite->id = asset_id_usr;
+	sprite->rect = make_rect(0, 0, 16, 16);
+
+	animated->id = animation_spawn;
+	animated->frame = 0;
+	animated->timer = 0;
+
+	return e;
+}
+
+void spawner_system(World* world) {
+	int i;
+	const CPosition* pos;
+	const CAnimated* animated;
+	const Animation* animation;
+	unsigned bits;
+
+	for (i = 0; i < world->entity_count; i++) {
+		bits = world->bitmask[i];
+		if (
+			(bits & ctype_spawner) &&
+			(bits & ctype_position) &&
+			(bits & ctype_animated)
+		) {
+			pos = &world->positions[i];
+			animated = &world->animateds[i];
+
+			animation = get_animation(animated->id);
+
+			if (animated->frame == animation->frame_count - 1) {
+				new_skull(world, pos->x, pos->y);
+				destroy_entity(world, i);
+			}
+		}
+	}
+}