Implement chest spawning logic and room check in ObjectHandler; add room detection to MazeData

game/placeables/base.rb

@@ -88,10 +88,35 @@ class ObjectHandler
   def initialize
     start_room_coords = $bus.get(:start_room_coords)
     @objects = []
+
+    #spawn_chests!
   end
 
   def spawn_chests!
     world_size = $bus.get(:maze_size) || [0, 0]
+
+    cell_size = 6  # tweak this (bigger = more spread out)
+
+    (0...world_size[0]).step(cell_size) do |cx|
+      (0...world_size[1]).step(cell_size) do |cy|
+
+        # Random position inside this cell
+        x = cx + rand(cell_size)
+        y = cy + rand(cell_size)
+
+        next if x >= world_size[0] || y >= world_size[1]
+
+        # Keep your spawn exclusion
+        next if (x - 2).abs <= 1 && (y - 2).abs <= 1
+
+        next if $bus.get(:room?, x, y)
+
+        # Chance per cell instead of per tile
+        if rand < 0.6
+          @objects << Chest.new(x, y)
+        end
+      end
+    end
   end
 
   def add(object)

utils/maze.rb

@@ -19,6 +19,13 @@ class MazeData
       next @start_room ? [@start_room[0] * 2 + 1, @start_room[1] * 2 + 1] : nil
     end
 
+    $bus.on(:room?) do |gx, gy|
+      ([@start_room] + @boss_rooms).any? do |rx, ry|
+        gx.between?(rx, rx + BOSS_ROOM_SIZE) &&
+        gy.between?(ry, ry + BOSS_ROOM_SIZE)
+      end
+    end
+
     return unless DEBUG
 
     print_debug