extends Node3D

var microban_1 := "
####
# .#
#  ###
#*@  #
#  $ #
#  ###
####
"

var states: Array[State] = [State.from_string(microban_1)]

func _ready() -> void:
	render()

func render() -> void:
	print(current_state())

func _input(event: InputEvent) -> void:
	if event.is_action_pressed("u"):
		step(Vector2i.UP)
	elif event.is_action_pressed("d"):
		step(Vector2i.DOWN)
	elif event.is_action_pressed("l"):
		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 undo():
	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))