extends CharacterBody3D

const SPEED = 5.0
const JUMP_VELOCITY = 4.5
const MOUSE_SENSITIVITY = 0.1

var gravity = ProjectSettings.get_setting("physics/3d/default_gravity")
var camera_rotation = Vector2()

func _input(event):
	if event is InputEventMouseMotion:
		camera_rotation -= event.relative * MOUSE_SENSITIVITY

func _physics_process(delta):
	# Add the gravity.
	if not is_on_floor():
		velocity.y -= gravity * delta

	# Handle Jump.
	if Input.is_action_just_pressed("ui_accept") and is_on_floor():
		velocity.y = JUMP_VELOCITY

	# Get the input direction and handle the movement/deceleration.
	# As good practice, you should replace UI actions with custom gameplay actions.
	var input_dir = Input.get_vector("Left", "Right", "Forward", "Back")
	var direction = (transform.basis * Vector3(input_dir.x, 0, input_dir.y)).normalized()
	if direction:
		velocity.x = direction.x * SPEED
		velocity.z = direction.z * SPEED
	else:
		velocity.x = move_toward(velocity.x, 0, SPEED)
		velocity.z = move_toward(velocity.z, 0, SPEED)

	move_and_slide()

	# Rotate the character's camera based on mouse input.
	$Camera3D.rotation_degrees.y = camera_rotation.x
	$Camera3D.rotation_degrees.x = clamp(camera_rotation.y, -90, 90)