extends CharacterBody3D

@export var speed := 3.0
@export var gravity := 9.8
@export var jump_velocity := 4.0
@export var mouse_sensitivity := 0.2

var x_rot := 0.0   # vertical camera rotation

func _physics_process(delta):
	# --- Movement Input ---
	var input_dir = Vector3.ZERO
	if Input.is_action_pressed("xr_move_forward"):
		input_dir.z -= 1
	if Input.is_action_pressed("xr_move_backward"):
		input_dir.z += 1
	if Input.is_action_pressed("xr_move_left"):
		input_dir.x -= 1
	if Input.is_action_pressed("xr_move_right"):
		input_dir.x += 1
	input_dir = input_dir.normalized()

	# Transform direction to global
	var direction = transform.basis * input_dir
	velocity.x = direction.x * speed
	velocity.z = direction.z * speed

	# --- Gravity ---
	if not is_on_floor():
		velocity.y -= gravity * delta
	else:
		velocity.y = 0
		if Input.is_action_just_pressed("xr_jump"):
			velocity.y = jump_velocity

	# --- Move Character ---
	move_and_slide()

func _unhandled_input(event):
	if event is InputEventMouseMotion:
		# Rotate the body horizontally
		rotate_y(deg_to_rad(-event.relative.x * mouse_sensitivity))

		# Rotate camera vertically
		var camera = $XRCamera3D
		x_rot += -event.relative.y * mouse_sensitivity
		x_rot = clamp(x_rot, -90, 90)
		camera.rotation.x = deg_to_rad(x_rot)