further elaboration on bullets

systems/bullets/actions/spawn_set_action.gd

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+class_name SpawnSetAction
+extends BulletAction
+## Spawns a new [BulletSet] at the [Bullet]'s position when triggered.
+
+
+## The [BulletPreset] to use for the spawned [BulletSet].
+@export var preset: BulletPreset
+
+## If [code]true[/code], the spawned [BulletSet] will be rotated to face the
+## [Bullet]'s direction.
+@export var match_direction: bool = false
+
+## If [code]true[/code], the spawned [BulletSet] will be added as a child of
+## the [Bullet]'s parent [BulletSet]. If [code]false[/code], it will be added
+## as a child of that [BulletSet]'s parent [Node].
+@export var local_coords: bool = false
+
+
+func _perform(bullet: Bullet) -> void:
+	var bullet_set = BulletSet.new()
+	bullet_set.preset = preset
+	bullet_set.global_position = bullet.global_position
+	if local_coords:
+		bullet.get_parent().add_child(bullet_set)
+	else:
+		bullet.get_parent().get_parent().add_child(bullet_set)