@abstract
class_name BulletBehavior
extends Resource


## Performs behavior-specific initialization for a [Bullet].
func init_bullet(bullet: Bullet) -> void:
	bullet.recycled.connect(deinit_bullet.bind(bullet), CONNECT_ONE_SHOT)
	_init_bullet(bullet)


## Cleans up behavior-specific state for a [Bullet].
func deinit_bullet(bullet: Bullet) -> void:
	_deinit_bullet(bullet)


## Processes one tick of a [Bullet]'s movement.
func process_bullet(bullet: Bullet, delta: float) -> void:
	_process_bullet(bullet, delta)


## Called when a [Bullet] is spawned with this behavior in order to set up
## behavior-specific state.
@abstract func _init_bullet(bullet: Bullet) -> void


## Called when a [Bullet] is recycled in order to clean up behavior-specific state.
@abstract func _deinit_bullet(bullet: Bullet) -> void


## Called to process a tick of a [Bullet]'s movement.
@abstract func _process_bullet(bullet: Bullet, delta: float) -> void