❇️ add support for hidden items

src/components/Item.tsx

@@ -72,7 +72,7 @@ const Item = ({ item }: Props) => {
     }
   });
 
-  if (isCollected) return null;
+  if (isCollected || item.hidden) return null;
 
   return (
     <StyledItem x={item.pos.x} y={item.pos.y}>

src/maps/map-types.ts

@@ -94,6 +94,7 @@ export interface TrainerType {
 export interface MapItemType {
   pos: PosType;
   item: ItemType;
+  hidden?: boolean;
 }
 
 export interface MapWithPos {

src/maps/mt-moon-1f.ts

@@ -301,6 +301,7 @@ const mtMoon1f: MapType = {
     },
     {
       item: ItemType.PokeBall, // TODO: should be MoonStone
+      hidden: true,
       pos: {
         x: 2,
         y: 2,