add projectile spawn particles

scripts/enemies/projectile_spawner.gd

@@ -4,6 +4,7 @@ extends Node3D
 @export var _projectile_scene: PackedScene
 @export var _velocity: Vector3 = Vector3.FORWARD
 @export var _spawn_rate: float = 2
+@export var _spawn_particles: GPUParticles3D
 
 var _spawn_timer: float
 
@@ -19,5 +20,6 @@ func _process(delta: float) -> void:
 		var projectile := _projectile_scene.instantiate() as Projectile
 		projectile.init(basis * _velocity, _spawn_point.global_position)
 		add_child(projectile)
+		_spawn_particles.emitting = true
 
 	_spawn_timer -= delta