extends CharacterBody3D

const SPEED = 150.0
const RUN_SPEED = 400.0
const JUMP_VELOCITY = 200

var last_direction:= Vector3.ONE
@onready var camera: Camera3D = $Camera3D

func _physics_process(delta: float) -> void:
  # Add the gravity.
  if not is_on_floor():
    velocity += get_gravity() * delta
  var k = RUN_SPEED if Input.is_key_pressed(KEY_SHIFT) else SPEED
  self.velocity.x = delta * k * Input.get_axis("move_left", "move_right")
  self.velocity.z = delta * k * Input.get_axis("move_forward", "move_back")
  
  Messagebus.DEBUG_XYZ.emit(self.global_transform.origin)
  
  if Input.is_key_pressed(KEY_SPACE) and is_on_floor():
    self.velocity.y = delta * JUMP_VELOCITY
  var i = int(Input.get_axis("move_left", "move_right"))
  if i:
    last_direction = Vector3(i, 1, 1)
  var t: Material = $MeshInstance3D.material_override
  t.uv1_scale = last_direction

  move_and_slide()
  
  # handle camera
  camera.position.x = lerp(camera.position.x, position.x, 0.08)
  camera.position.y = lerp(camera.position.y, position.y, 0.08) + 0.07
  camera.position.z = position.z + 4

func _unhandled_input(event: InputEvent) -> void:
  if event is InputEventMouseButton:
    if event.is_pressed():
      if event.button_index == MOUSE_BUTTON_WHEEL_UP:
        camera.fov -= 1 * (5 if Input.is_key_pressed(KEY_SHIFT) else 1)
        camera.size -= 1 * (0.2 if Input.is_key_pressed(KEY_SHIFT) else 0.05)
      if event.button_index == MOUSE_BUTTON_WHEEL_DOWN:
        camera.fov += 1 * (5 if Input.is_key_pressed(KEY_SHIFT) else 1)
        camera.size += 1 * (0.2 if Input.is_key_pressed(KEY_SHIFT) else 0.05)