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

scripts/portal_door.gd

@@ -34,25 +34,33 @@ func _on_body_entered(body: Node3D):
 	
 	if body.is_in_group("Players") or body.get("is_bot"):
 		print("[PortalDoor] Player %s entered Door %d in Room %d" % [body.name, door_id, room_id])
-		emit_signal("player_entered_portal", body, self)
+		emit_signal("player_entered_portal", body, self )
 
 var _materials_initialized: bool = false
 
 func _update_visuals():
-	if not is_node_ready() or not is_inside_tree(): return
+	# Removed is_node_ready() check to allow early setter calls to prepare variables,
+	# but we still need the nodes to exist to apply them.
+	if not is_inside_tree(): return
+	
+	var vortex = get_node_or_null("Vortex")
+	var frame_left = get_node_or_null("Frame_Left")
+	
+	# If children aren't there yet, we can't update visuals.
+	# This usually happens if called before or during early _ready.
+	if not vortex or not frame_left: return
 	
 	if not _materials_initialized:
 		_initialize_unique_materials()
 		_materials_initialized = true
 	
-	var vortex = get_node_or_null("Vortex")
 	if vortex:
 		var mat = vortex.get_surface_override_material(0)
 		if mat:
 			mat.albedo_color = portal_color
 			mat.albedo_color.a = 0.5
 			if mat.has_method("set_emission"):
-				mat.emission = portal_color
+				mat.set("emission", portal_color)
 	
 	for part_name in ["Frame_Left", "Frame_Right", "Frame_Top"]:
 		var frame = get_node_or_null(part_name)