undo and restart

main.gd

@@ -12,19 +12,11 @@ var microban_1 := "
 
 var states: Array[State] = [State.from_string(microban_1)]
 
-func current_state() -> State:
-	return states[-1]
-
-func undo():
-	if states.size() == 1:
-		return
-	states.pop_back()
-
-func step(move: Vector2i):
-	states.push_back(current_state().step(move))
-
 func _ready() -> void:
-	print(State.from_string("\n#####\n#@$.#\n#####\n\n"))
+	render()
+
+func render() -> void:
+	print(current_state())
 
 func _input(event: InputEvent) -> void:
 	if event.is_action_pressed("u"):
@@ -35,8 +27,30 @@ func _input(event: InputEvent) -> void:
 		step(Vector2i.LEFT)
 	elif event.is_action_pressed("r"):
 		step(Vector2i.RIGHT)
+	elif event.is_action_pressed("undo"):
+		undo()
+	elif event.is_action_pressed("redo"):
+		pass
+	elif event.is_action_pressed("restart"):
+		restart()
 	
+
+func current_state() -> State:
+	return states[-1]
+
+func push_state(state: State):
+	states.push_back(state)
 	render()
 
-func render() -> void:
+func undo():
-	print(current_state())
+	if states.size() == 1:
+		return
+	states.pop_back()
+	render()
+
+# todo: don't restart multiple times
+func restart():
+	push_state(states[0])
+
+func step(move: Vector2i):
+	push_state(current_state().step(move))

project.godot

@@ -45,6 +45,32 @@ r={
 , Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":76,"key_label":0,"unicode":108,"location":0,"echo":false,"script":null)
 ]
 }
+undo={
+"deadzone": 0.2,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":85,"key_label":0,"unicode":117,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":90,"key_label":0,"unicode":122,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194308,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":true,"pressed":false,"keycode":0,"physical_keycode":90,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":true,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":90,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+]
+}
+restart={
+"deadzone": 0.2,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":82,"key_label":0,"unicode":114,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":true,"pressed":false,"keycode":0,"physical_keycode":82,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":true,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":82,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+]
+}
+redo={
+"deadzone": 0.2,
+"events": [null, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":true,"ctrl_pressed":false,"meta_pressed":true,"pressed":false,"keycode":0,"physical_keycode":90,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":true,"ctrl_pressed":true,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":90,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":true,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":89,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":true,"pressed":false,"keycode":0,"physical_keycode":89,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":true,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":85,"key_label":0,"unicode":85,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":true,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":90,"key_label":0,"unicode":90,"location":0,"echo":false,"script":null)
+]
+}
 
 [rendering]