End of chapter 6. A lot of problems took to much time to solve. It was good to know better Godot internal mechanism.

scripts/game/game_screen.gd

@@ -1,12 +1,13 @@
 extends Node
 
-class_name  GameScreen
+class_name GameScreen
 
-@export var map: Node
+@export var map:Node
 
-# Called when the node enters the scene tree for the first time.
-func _ready() -> void:
+func _ready():
 	map.add_child(load(GameManager.currentMapPath).instantiate())
+	CommandDispatcher.WAIT_FOR_COMMAND.emit()
 
-func _on_pass_button_pressed() -> void:
+
+func _on_pass_button_pressed():
 	CommandDispatcher.PROCESS_COMMAND.emit(PassCommand.new())