extends Node3D

@export var camera: Camera3D
@export var initial_target: Node3D
var target: Targetable = null
@export var sensitivity := 0.01
@export var charge_time := 1.7
@export var min_charge := 0.2

func _ready():
	set_target(initial_target)

func get_charge():
	return %radial_ui.charge_amount

func _input(event):
	var billiard := target.get_billiard()
	if event is InputEventMouseMotion and MouseControl.mouse_is_locked() and get_charge() == 0.0:
		rotate_view(event.relative*sensitivity)
	if event.is_action_released("charge") and not billiard.can_hit and charge_tween != null:
		release()
	if event.is_action_pressed("charge") and billiard.can_hit and charge_tween == null:
		charge(event.get_action_strength("charge"))

func _process(_delta):
	transform.origin = target.global_position
	camera.global_position = %camera_spot.global_position
	camera.look_at(target.global_position)
	if get_charge() >= 1.0:
		cancel_charge()

func cancel_charge():
	%radial_ui.set_charge(0.0)
	%ChargeSound.stop()
	if charge_tween != null:
		charge_tween.kill()
		charge_tween = null
	var billiard := target.get_billiard()
	billiard.can_hit = true

func release():
	if get_charge() <= min_charge:
		cancel_charge()
		return
	%ChargeReleaseSound.volume_db = get_charge() * 12
	%ChargeReleaseSound.play()
	var billiard := target.get_billiard()
	billiard.hit((target.global_position - %camera_spot.global_position).normalized(), get_charge())
	%radial_ui.set_charge(0.0)
	%ChargeSound.stop()
	if charge_tween != null:
		charge_tween.kill()
		charge_tween = null

var charge_tween: Tween = null
func charge(_amount: float):
	var billiard := target.get_billiard()
	billiard.can_hit = false
	if charge_tween != null:
		charge_tween.kill()
	charge_tween = create_tween()
	charge_tween.tween_method(%radial_ui.set_charge, 0.0, 1.0, charge_time)
	%ChargeSound.play()

func rotate_view(amount: Vector2):
	rotate_y(-amount.x)
	%rotate_helper.rotate_z(amount.y)
	%rotate_helper.rotation_degrees.z = clampf(%rotate_helper.rotation_degrees.z, -77, 77)

func set_target(node: Node3D):
	var ntarget = Targetable.is_targetable(node)
	if ntarget == null:
		push_error("Node is node targetable", node)
		return
	if target != null:
		target.unmake_target()
	ntarget.make_target()
	target = ntarget