The_Dark_Side_of_Earth/enemies/boss/blob_big.gd

extends Node2D
@onready var player = get_tree().get_root().get_node("main/Player")
var speed = 200
var angular_speed = TAU/8
var lifetime = 5

var ready_blobs = 0

var num_blobs = 0

var particles_ended = false

func _on_target_reached():
	ready_blobs += 1

func _ready() -> void:
	# Count those children that have a "target reached" signal and connect them.
	for child in get_children():
		if "target_reached" in child:
			num_blobs += 1
			child.connect("target_reached", _on_target_reached)
	$SplashSound.play()

func _process(delta: float) -> void:
	# Once all child blobs have reached their target, start moving as one while slowly rotating.
	if ready_blobs == num_blobs:
		position += (player.position - position).normalized() * speed * delta
		rotate(angular_speed * delta)
		lifetime -= delta
		# In the end, clear all child blobs, then the rest.
		if lifetime < 0 and not particles_ended:
			particles_ended = true
			for child in get_children():
				if "target_reached" in child:
					child.get_node("GPUParticles2D").emitting = false
					child.get_node("Area2D").queue_free()
		if lifetime < -2:
			queue_free()