extends Camera3D

@export var rail : Path3D
@export var target : Node3D
@export var seek_easing : float = 1.0
var crv : Curve3D
var cur_offset : float
var tgt_offset : float
var target_pos


# Called when the node enters the scene tree for the first time.
func init():
	crv = rail.curve
	target_pos = target.position
	tgt_offset = crv.get_closest_offset( target.position )

func seek_target():
	
	if target_pos != target.position:
		target_pos = target_pos.move_toward( target.position , target.position.distance_to(target_pos)/seek_easing )	 # distancia entre los puntos dividido entre easing
	look_at( target_pos + Vector3(0.0,0.70,0.0) )

	
func constraint_to_rail():
	tgt_offset = crv.get_closest_offset( target.position )
	cur_offset = move_toward( cur_offset , tgt_offset ,  abs(tgt_offset - cur_offset )/ (seek_easing * 100) )
	print((tgt_offset - cur_offset ))
	position = crv.sample_baked( cur_offset )
	
func _ready():
	init()


func _process(delta):
	constraint_to_rail()
	seek_target()