extends Node2D

var screen_size
var pad_size
var direction = Vector2(1.0 , 0.0)
var game_started = false

const INITIAL_BALL_SPEED = 120
var ball_speed = INITIAL_BALL_SPEED
const PAD_SPEED = 180

func _ready():
	screen_size = get_viewport_rect().size
	pad_size = get_node('LPallete').get_texture().get_size()

func _process(delta):

	#starting the game
	if not game_started:
		if Input.is_action_just_pressed("ui_accept"):
			game_started = true
			direction = Vector2(randf() * 2 - 1, randf() * 2 - 1).normalized()
		return

	#ball movement
	var ball_pos = get_node("Ball").position
	var left_rect = Rect2( get_node("LPallete").position - pad_size*0.5, pad_size )
	var right_rect = Rect2( get_node("RPallete").position - pad_size*0.5, pad_size )
	ball_pos += direction * ball_speed * delta
	if ((ball_pos.y < 0 and direction.y < 0) or (ball_pos.y > screen_size.y and direction.y > 0)): direction.y = -direction.y

	#pad collision
	if ((left_rect.has_point(ball_pos) and direction.x < 0) or (right_rect.has_point(ball_pos) and direction.x > 0)):
		direction.x = -direction.x
		direction.y = randf()*2.0 - 1
		direction = direction.normalized()
		ball_speed *= 1.1
	if (ball_pos.x < 0 or ball_pos.x > screen_size.x):
		ball_pos = screen_size*0.5
		ball_speed = INITIAL_BALL_SPEED
		direction = Vector2(-1, 0)
		game_started = false
	get_node("Ball").position = ball_pos


#PAD Movement
	var left_pos = get_node("LPallete").position

	if (left_pos.y - pad_size.y * 0.5> 0 and Input.is_action_pressed("left_move_up")):
		left_pos.y += -PAD_SPEED * delta
	if (left_pos.y + pad_size.y * 0.5 < screen_size.y and Input.is_action_pressed("left_move_down")):
		left_pos.y += PAD_SPEED * delta

	get_node("LPallete").position = left_pos

	var right_pos = get_node("RPallete").position

	if (right_pos.y - pad_size.y * 0.5 > 0 and Input.is_action_pressed("right_move_up")):
		right_pos.y += -PAD_SPEED * delta
	if (right_pos.y + pad_size.y * 0.5 < screen_size.y and Input.is_action_pressed("right_move_down")):
		right_pos.y += PAD_SPEED * delta

	get_node("RPallete").position = right_pos