Refactor character and enemy AI movement logic; implement delta time for smoother updates and replace object (a reserved keyword) with prop.

game/props/handler.rb

@@ -0,0 +1,86 @@
+require_relative "base"
+
+class PropsHandler
+  attr_reader :props
+
+  def initialize
+    @props = []
+    @grid = {}
+
+    spawn_chests!
+
+    $bus.on(:collides?) do |rect|
+      nearby_props(rect).any? { |p| p.collides?(rect) } ? :prop : nil
+    end
+
+    $bus.on(:prop_at) do |x, y|
+      @grid[[x, y]]
+    end
+
+    $bus.on(:nearby_torches) do |rect|
+      nearby_props(rect).select { |p| p.is_a?(Torch) }.map { |t| t.rect }
+    end
+  end
+
+  def spawn_chests!
+    world_size = $bus.get(:maze_size) || [0, 0]
+
+    cell_size = 10
+
+    (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)
+
+        chest = Chest.new(x, y)
+        @props << chest
+        @grid[[x, y]] = chest
+      end
+    end
+  end
+
+  def nearby_props(rect)
+    x, y, w, h = rect
+
+    min_tx = ((x) / 120).floor
+    max_tx = ((x + w) / 120).floor
+    min_ty = ((y) / 120).floor
+    max_ty = ((y + h) / 120).floor
+
+    results = []
+
+    (min_tx..max_tx).each do |tx|
+      (min_ty..max_ty).each do |ty|
+        p = @grid[[tx, ty]]
+        results << p if p
+      end
+    end
+
+    results
+  end
+
+  def add(prop)
+    @props << prop
+
+    key = [prop.x, prop.y]
+    @grid[key] = prop
+  end
+
+  def update
+    @props.each(&:update)
+  end
+
+  def draw
+    cam = $bus.get(:camera_pos) || [0, 0]
+    nearby_props([*cam, *SCREEN_SIZE]).each(&:draw)
+  end
+end