feat: implement Tekton Doors game mode with arena setup, portal management, connection randomization, and game state timers.

addons/enhanced_gridmap/enhanced_gridmap.gd

@@ -55,7 +55,8 @@ func _ready():
 			# Safety check: Don't auto-randomize if game mode manages its own arena
 			if not (ResourceLoader.exists("res://scripts/managers/lobby_manager.gd") \
 				and get_node_or_null("/root/LobbyManager") \
-				and get_node("/root/LobbyManager").game_mode == "Stop n Go"):
+				and (get_node("/root/LobbyManager").game_mode == "Stop n Go" \
+				or get_node("/root/LobbyManager").game_mode == "Tekton Doors")):
 				randomize_grid()
 	validate_item_indices()
 
@@ -118,7 +119,7 @@ func generate_grid(floor_index: int = -1):
 			var rng = RandomNumberGenerator.new()
 			rng.randomize()
 			var shape = rng.randi() % 4 # 0-3 (Rect, Islands, Maze, Rooms)
-			generator.generate_map(self, columns, rows, shape)
+			generator.generate_map(self , columns, rows, shape)
 		else:
 			generate_floor(0)
 
@@ -137,7 +138,7 @@ func generate_grid(floor_index: int = -1):
 				var rng = RandomNumberGenerator.new()
 				rng.randomize()
 				var shape = rng.randi() % 4
-				generator.generate_map(self, columns, rows, shape)
+				generator.generate_map(self , columns, rows, shape)
 		else:
 			clear_floor(floor_index)
 			generate_floor(floor_index)
@@ -213,8 +214,16 @@ func set_floor_data(floor_index: int, data: PackedInt32Array):
 		
 	for i in range(0, count, 3):
 		var x = data[i]
-		var z = data[i+1]
-		var item = data[i+2]
+		var z = data[i + 1]
+		var item = data[i + 2]
+		
+		# WALL-SAFETY CHECK: Skip if item is a tile (7-20) and Floor 0 is a wall
+		if floor_index == 1 and item >= 7 and item <= 20:
+			var f0 = get_cell_item(Vector3i(x, 0, z))
+			if f0 != -1 and f0 in non_walkable_items:
+				# Skip illegal placement from synced data
+				continue
+				
 		set_cell_item(Vector3i(x, floor_index, z), item)
 	
 	update_grid_data()