Player.gd

extends Area2D

signal hit
signal hit_mob

var mobile  # The input device changes if mobile
export var speed = 400  # How fast the player will move (pixels/sec).
var screen_size  # Size of the game window.
var hit_number  # last number hit

var target = Vector2()

# Called when the node enters the scene tree for the first time.
func _ready():
	mobile = false
	screen_size = get_viewport_rect().size
	hide()

# Change the target whenever a touch event happens.
func _input(event):
	if event is InputEventScreenTouch and event.pressed:
		target = event.position
		mobile = true
	mobile = false  # disable mobile support until it is done right

func _process(delta):
	if mobile:
		_process_mobile(delta)
	else:
		_process_keyboard(delta)

func _process_keyboard(delta):
	var velocity = Vector2()  # The player's movement vector.
	if Input.is_action_pressed("ui_right"):
		velocity.x += 1
	if Input.is_action_pressed("ui_left"):
		velocity.x -= 1
	if Input.is_action_pressed("ui_down"):
		velocity.y += 1
	if Input.is_action_pressed("ui_up"):
		velocity.y -= 1
	if velocity.length() > 0:
		velocity = velocity.normalized() * speed
		$AnimatedSprite.play()
	else:
		$AnimatedSprite.stop()
	
	position += velocity * delta
	position.x = clamp(position.x, 0, screen_size.x)
	position.y = clamp(position.y, 0, screen_size.y)
	
	if velocity.x != 0:
		$AnimatedSprite.animation = "walk"
		$AnimatedSprite.flip_v = false
		# See the note below about boolean assignment
		$AnimatedSprite.flip_h = velocity.x < 0
	elif velocity.y != 0:
		$AnimatedSprite.animation = "up"
		$AnimatedSprite.flip_v = velocity.y > 0

func _process_mobile(delta):
	var velocity = Vector2()
	# Move towards the target and stop when close.
	if position.distance_to(target) > 10:
		velocity = target - position

	# Support also keyboard
	if Input.is_action_pressed("ui_right"):
	   velocity.x += 1
	if Input.is_action_pressed("ui_left"):
		velocity.x -= 1
	if Input.is_action_pressed("ui_down"):
		velocity.y += 1
	if Input.is_action_pressed("ui_up"):
		velocity.y -= 1

	if velocity.length() > 0:
		velocity = velocity.normalized() * speed
		$AnimatedSprite.play()
	else:
		$AnimatedSprite.stop()

	position += velocity * delta
	# We still need to clamp the player's position here because on devices that don't
	# match your game's aspect ratio, Godot will try to maintain it as much as possible
	# by creating black borders, if necessary.
	# Without clamp(), the player would be able to move under those borders.
	position.x = clamp(position.x, 0, screen_size.x)
	position.y = clamp(position.y, 0, screen_size.y)

	if velocity.x != 0:
		$AnimatedSprite.animation = "walk"
		$AnimatedSprite.flip_v = false
		$AnimatedSprite.flip_h = velocity.x < 0
	elif velocity.y != 0:
		$AnimatedSprite.animation = "up"
		$AnimatedSprite.flip_v = velocity.y > 0

func _on_Player_body_entered(body):
	if body.get_type() == "number":
		hit_number = body
		emit_signal("hit")
	else:
		hide()
		$CollisionShape2D.set_deferred("disabled", true)
		emit_signal("hit_mob")

func start(pos):
	position = pos
	# Initial target is the start position
	target = pos
	show()
	$CollisionShape2D.disabled = false