extends KinematicBody2D

export var move_speed := 100
export var gravity := 2000
export var jump_speed := 550

var velocity := Vector2.ZERO

func change_animation():
	if velocity.x > 0:
		# right
		$AnimatedSprite.flip_h = false
	elif velocity.x < 0:
		# left
		$AnimatedSprite.flip_h = true
	
	# jumping
	if velocity.y < 0:
		$AnimatedSprite.play("jump")
	else:
		if velocity.x != 0:
			$AnimatedSprite.play("walk")
		else:
			$AnimatedSprite.play("idle")

func _process(delta: float) -> void:
	change_animation()

func _physics_process(delta: float) -> void:
	# reset motion
	velocity.x = 0
	
	# movement
	if Input.is_action_pressed("move_right"):
		velocity.x += move_speed
	if Input.is_action_pressed("move_left"):
		velocity.x -= move_speed
	
	# gravity
	velocity.y += gravity * delta
	
	# Apply jump to next frame
	if Input.is_action_just_pressed("jump"):
		if is_on_floor():
			# negative y is up
			velocity.y -= jump_speed
	
	# move the heccin boi
	velocity = move_and_slide(velocity, Vector2.UP)