extends Node2D
# Original Forge map-import probe. Tiled's built-in exporter owns room.tscn.
const SPEED = 90.0
var player: CharacterBody2D
var spawn: Marker2D
var paused = false
var status: Label

func _ready():
	spawn = $Room/PlayerSpawn
	player = CharacterBody2D.new()
	player.name = "Probe"
	player.collision_layer = 2
	player.collision_mask = 1
	player.motion_mode = CharacterBody2D.MOTION_MODE_FLOATING
	var collider = CollisionShape2D.new()
	var shape = CircleShape2D.new()
	shape.radius = 6.0
	collider.shape = shape
	player.add_child(collider)
	var marker = Polygon2D.new()
	marker.polygon = PackedVector2Array([Vector2(-6,0),Vector2(-4,-4),Vector2(0,-6),Vector2(4,-4),Vector2(6,0),Vector2(4,4),Vector2(0,6),Vector2(-4,4)])
	marker.color = Color("2be6c3")
	player.add_child(marker)
	add_child(player)
	reset_probe()
	var camera = Camera2D.new()
	camera.position = Vector2(160,96)
	camera.zoom = Vector2(2,2)
	add_child(camera)
	var hud = CanvasLayer.new()
	add_child(hud)
	status = Label.new()
	status.position = Vector2(12,12)
	status.add_theme_font_size_override("font_size",14)
	status.add_theme_color_override("font_shadow_color",Color.BLACK)
	status.add_theme_constant_override("shadow_offset_x",1)
	status.add_theme_constant_override("shadow_offset_y",1)
	hud.add_child(status)
	refresh_status()

func reset_probe():
	player.position = spawn.position
	player.velocity = Vector2.ZERO

func refresh_status():
	status.text = "WASD / arrows: move   P: pause   R: reset\n" + ("Paused" if paused else "Test the walls, then reopen the project.")

func _unhandled_key_input(event):
	if not event is InputEventKey or not event.pressed or event.echo:
		return
	if event.physical_keycode == KEY_P:
		paused = not paused
		player.velocity = Vector2.ZERO
		refresh_status()
	elif event.physical_keycode == KEY_R:
		reset_probe()

func move_probe(direction: Vector2):
	player.velocity = Vector2.ZERO if paused else direction.limit_length(1.0) * SPEED
	player.move_and_slide()

func _physics_process(_delta):
	var direction = Input.get_vector("ui_left","ui_right","ui_up","ui_down")
	if Input.is_physical_key_pressed(KEY_A): direction.x -= 1
	if Input.is_physical_key_pressed(KEY_D): direction.x += 1
	if Input.is_physical_key_pressed(KEY_W): direction.y -= 1
	if Input.is_physical_key_pressed(KEY_S): direction.y += 1
	move_probe(direction)