extends Spatial

var yaw_pitch = Vector2.ZERO
var mouse_look_sensitivity = 0.1
var controller_look_sensitivity = 3
var target_yaw_pitch = Vector2.ZERO
var look_acceleration = 0.4


func _ready():
	Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)

func rotate_camera(relative : Vector2):
	target_yaw_pitch -= relative*PI/180.0
	target_yaw_pitch.x = wrapf(target_yaw_pitch.x, -PI, PI)
	target_yaw_pitch.y = clamp(target_yaw_pitch.y, -PI/2.0, PI/2.0)

func _input(event):
	if Input.get_mouse_mode() == Input.MOUSE_MODE_CAPTURED:
		if event is InputEventMouseMotion:
			rotate_camera(event.relative * mouse_look_sensitivity)
		if Input.is_action_just_pressed("ui_cancel"):
			Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
	else:
		if event is InputEventMouseButton:
			Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
		
	var look_relative = Vector2(
		Input.get_action_strength("player_look_right") - Input.get_action_strength("player_look_left"),
		Input.get_action_strength("player_look_down") - Input.get_action_strength("player_look_up")
	)
	rotate_camera(look_relative * controller_look_sensitivity)

func _process(_delta):
	yaw_pitch.x = wrapf(lerp_angle(yaw_pitch.x, target_yaw_pitch.x, look_acceleration), -PI, PI)
	yaw_pitch.y = lerp_angle(yaw_pitch.y, target_yaw_pitch.y, look_acceleration)
	
	rotation = Vector3.ZERO
	rotate_y(yaw_pitch.x)
	
	$Rotation.rotation = Vector3.ZERO
	$Rotation.rotate_x(yaw_pitch.y)