Moves item update to its own function

src/item.c

@@ -40,6 +40,18 @@ item_create(void)
 	return item;
 }
 
+void
+item_update(Item *item)
+{
+	LinkedList *subsprites = item->subsprites;
+	while (subsprites != NULL) {
+		Sprite *sprite = subsprites->data;
+		sprite->pos = item->sprite->pos;
+		sprite->pos.x += 15 - sprite->dim.width / 2;
+		subsprites = subsprites->next;
+	}
+}
+
 void
 item_render(Item *item, Camera *cam)
 {
@@ -47,10 +59,7 @@ item_render(Item *item, Camera *cam)
 
 	LinkedList *subsprites = item->subsprites;
 	while (subsprites != NULL) {
-		Sprite *sprite = subsprites->data;
-		sprite->pos = item->sprite->pos;
-		sprite->pos.x + 15 - sprite->dim.width / 2;
-		sprite_render(sprite, cam);
+		sprite_render(subsprites->data, cam);
 		subsprites = subsprites->next;
 	}
 }

src/item.h

@@ -46,6 +46,9 @@ item_create(void);
 void
 item_collected(Item*, Player*);
 
+void
+item_update(Item*);
+
 void
 item_render(Item*, Camera*);
 

src/map.c

@@ -295,6 +295,12 @@ map_update(UpdateData *data)
 				sprite_update(room->tiles[i][j]->sprite, data);
 		}
 	}
+
+	LinkedList *items = map->items;
+	while (items) {
+		item_update(items->data);
+		items = items->next;
+	}
 }
 
 void map_render(Map *map, Camera *cam)