extends CharacterBody2D

@export var speed = 200
var screen_size
var damage = 1

func _ready():
	screen_size = get_viewport_rect().size

func _process(delta):
	velocity = Vector2.ZERO
	if Input.is_action_pressed("move_right"):
		velocity.x += 1
	if Input.is_action_pressed("move_left"):
		velocity.x -= 1
	if Input.is_action_pressed("move_down"):
		velocity.y += 1
	if Input.is_action_pressed("move_up"):
		velocity.y -= 1

	move_and_collide(speed * velocity * delta)
	#position += speed * velocity * delta
	position = get_boundaried_position(position)
	
	# periodic boundary
	
func get_boundaried_position(position):
	## clamp
	#return position.clamp(Vector2.ZERO, screen_size)
	
	## periodic
	position.x = wrapf(position.x, 0, screen_size.x)
	position.y = wrapf(position.y, 0, screen_size.y)
	return position