class_name RingPattern
extends BulletSpawnPattern
## Spawns bullets evenly spaced out around a circle.


## The number of bullets to spawn along the circle.
@export var bullet_count: int = 3
## The speed that bullets will start with.
@export var bullet_speed: float
## Radius of the circle that bullets spawn along the edge of.
@export var radius: float
## Rotation of the entire ring pattern.
@export_custom(0, "radians_as_degrees") var angle_offset: float
## Rotation of each bullet's travel direction.
@export_custom(0, "radians_as_degrees") var direction_rotation: float


func _spawn_bullets(bullet_set: BulletSet, preset: BulletPreset) -> void:
	for i in bullet_count:
		var angle = (float(i) / float(bullet_count)) * TAU + angle_offset + bullet_set.spawn_rotation
		var bullet = Bullet.create(preset, Vector2.from_angle(angle + direction_rotation))
		bullet.speed = bullet_speed
		bullet.position = bullet_set.spawn_offset + Vector2.from_angle(angle) * radius
		bullet_set.add_bullet(bullet)