class_name Building
extends CollisionObject3D

@export var health := 10.

@export var shake_noise: FastNoiseLite
var shake_duration := 0.
@onready var initial_shaker_pos: Vector3 = %Shaker.position

func _ready() -> void:
	scale.y = randf_range(.5, 1.25)


func _process(delta: float) -> void:
	if shake_duration <= 0:
		%Shaker.position = initial_shaker_pos
	else:
		var x := shake_noise.get_noise_1d(shake_duration * 10000)
		var y := shake_noise.get_noise_1d(-shake_duration * 10000)
		%Shaker.position = initial_shaker_pos + (Vector3(x, 0, y) * 0.75)
	
	shake_duration = move_toward(shake_duration, 0., delta)

func hit(_proj: PlayerProjectile, damage: float) -> bool:
	health -= damage
	if health <= 0.:
		SignalBus.building_destroyed.emit(self)
		collision_layer = 1 # World collision only

		%Shaker.hide()
		%DestroyedMesh.show()
		%GPUParticles3D.preprocess = randf()
	else:
		shake_duration += 0.5

	return true