extends KinematicBody2D
class_name PlayerCharacter

export (int) var speed = 8
export (float) var walk_wobble_coeff = 5
var velocity = Vector2()
var look_dir = 1 # right = 1, left  = -1

func get_input():
	velocity = Vector2()
	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
	velocity = velocity.normalized() * speed
	
func _process(_delta):
	# Update walking wobble
	var is_moving = velocity.length_squared() > .0
	if is_moving:
		var time = OS.get_system_time_msecs() / 1000.0
		var rot = 0.2 * sin(walk_wobble_coeff * time)
		$Sprite.set_rotation(rot)
	else:
		$Sprite.set_rotation(0)
		
	# Look at walking direction
	if velocity[0] > .0:
		look_dir = 1
	elif velocity[0] < .0:
		look_dir = -1

	$Sprite.set_scale(Vector2(look_dir, 1))

func _physics_process(_delta):
	get_input()
	velocity = move_and_slide(velocity)
	
func change_level(num: int):
	var new_scene = "res://scenes/Scene" + String(num) + ".tscn"
	var success = get_tree().change_scene(new_scene)
	if success == OK:
		print("Changed level to " + new_scene)
	else:
		push_error("Failed to change level to " + new_scene)