The raycaster can now pair a floor with a ceiling tile and to demonstrate this I have a blue light that shines on to a stone floor. I also played with just pixelating a regular image rather than painting it and honestly it looks better in a lot of ways.

assets/enemies.json

@@ -20,7 +20,7 @@
       {"_type": "Combat", "hp": 20, "max_hp": 20, "damage": 1, "dead": false},
       {"_type": "Motion", "dx": 0, "dy": 0, "random": false},
       {"_type": "EnemyConfig", "ai_script": "Enemy::actions", "ai_start_name": "Enemy::initial_state", "ai_goal_name": "Enemy::final_state"},
-      {"_type": "Personality", "hearing_distance": 5, "tough": true},
+      {"_type": "Personality", "hearing_distance": 5, "tough": false},
       {"_type": "Animation", "easing": 1, "ease_rate": 0.2,  "scale": 0.1, "simple": true, "frames": 10, "speed": 0.3, "stationary": false},
       {"_type": "Sprite", "name": "gold_savior", "width": 256, "height": 256, "width": 256, "height": 256, "scale": 1.0},
       {"_type": "Sound", "attack": "Sword_Hit_2", "death": "Humanoid_Death_1"}

assets/tiles.json

@@ -3,6 +3,7 @@
     "texture": "assets/floor_tile_test-256.png",
     "collision": false,
     "display": 10398,
+    "ceiling": "ceiling_plain",
     "id": 0
   },
   "wall_plain": {
@@ -23,7 +24,7 @@
     "display": 35,
     "id": 3
   },
-  "plain_ceiling": {
+  "ceiling_plain": {
     "texture": "assets/ceiling_test-256.png",
     "collision": false,
     "display": 35,
@@ -33,6 +34,20 @@
     "texture": "assets/lava_floor-256.png",
     "collision": false,
     "display": 35,
+    "ceiling": "ceiling_plain",
     "id": 5
+  },
+  "large_stone_floor": {
+    "texture": "assets/large_stone_floor-256.png",
+    "collision": false,
+    "display": 35,
+    "ceiling": "ceiling_moss_brick_blue_light",
+    "id": 6
+  },
+  "ceiling_moss_brick_blue_light": {
+    "texture": "assets/ceiling_moss_brick_blue_light-256.png",
+    "collision": false,
+    "display": 35,
+    "id": 7
   }
 }