extends AnimationTree

@export_group("Animation names")
@export var _suffix_left := "_L"
@export var _suffix_right := "_R"

@export var _idle_name := "+idle"

var _speed: float
var _has_input: bool

@onready var _player: Player = $"../" as Player
@onready var _attack: PlayerAttack = $"../Attack" as PlayerAttack
@onready var _locomotion_playback: AnimationNodeStateMachinePlayback = get(
	"parameters/locomotion/playback"
)


func _ready() -> void:
	assert(_player, "_player missing!")
	Music.track_started.connect(_on_music_track_started)
	_attack.attacked.connect(_on_player_attacked)
	_set_bpm()
	_set_side()


func _process(_delta: float) -> void:
	advance(Music.audio_delta as float)
	_speed = _player.velocity.length() / _player.movement.move_speed
	_has_input = _player.movement.move_input.length() > 0

	var velocity_relative := _player.to_local(
		_player.global_position + _player.velocity
	)
	var velocity_blend := (
		Vector2(-velocity_relative.x, velocity_relative.z) / _player.movement.move_speed
	)
	Debugger.text("velocity_blend", velocity_blend, 2)
	set(&"parameters/locomotion/run_R/blend_position", velocity_blend)


func _is_left() -> bool:
	return _attack.side == PlayerAttack.Side.LEFT


func _suffix(invert: bool = false) -> String:
	if not invert:
		return _suffix_left if _is_left() else _suffix_right
	return _suffix_left if not _is_left() else _suffix_right


func _set_bpm() -> void:
	set(&"parameters/main_time_scale/scale", Music.bpm_factor)


func _set_side() -> void:
	_locomotion_playback.travel(_idle_name + _suffix())


func _on_music_track_started() -> void:
	_set_bpm()


func _on_player_attacked() -> void:
	_set_side()