cirnogodot/Scenes/Barrel.cs

using Godot;
using System;
using System.Diagnostics;
using Cirno.Scripts;

public partial class Barrel : Area2D, IDestructible
{
	[Export] public float Health = 1f;

	[Export] public float ExplosionRadius = 1;

	[Export] public float ExplosionDamage = 1;

	[Export] public PackedScene DebrisScene { get; set; }
	
	[Export] public PackedScene ExplosionParticles { get; set; }

	private float _currentHealth = 0f;

	private bool _isDestroyed = false;

	// Called when the node enters the scene tree for the first time.
	public override void _Ready()
	{
		_currentHealth = Health;
	}

	// Called every frame. 'delta' is the elapsed time since the previous frame.
	public override void _Process(double delta)
	{
	}

	private void Explode()
	{
		Debug.WriteLine("Boom");
		CreateParticles();
		CreateDebris();
		QueueFree();
	}

	private void CreateDebris()
	{
		this.CreateSibling<Barrel>(DebrisScene);
		
		// if (DebrisScene == null) return;
		// var debris = DebrisScene.Instantiate<Barrel>();
		// Owner.CallDeferred("add_child", debris); //.AddChild(debris);
		// debris.Transform = this.GlobalTransform;
		// debris.Position = this.Position;
	}

	private void CreateParticles()
	{
		if (ExplosionParticles == null) {
			GD.PushWarning("Object has no particles associated");
			return;
		}
		var particle = this.CreateSibling<GpuParticles2D>(ExplosionParticles);
		if (particle == null) return;

		particle.Emitting = true;
		
		// if (ExplosionParticles == null) return;
		// var emitter = ExplosionParticles.Instantiate<GpuParticles2D>();
		// Owner.CallDeferred("add_child", emitter);
		// emitter.Transform = this.GlobalTransform;
		// emitter.Position = this.Position;
		//
		// emitter.Emitting = true;
	}

	// private T CreateChild<T>(PackedScene prefab) where T : Node2D
	// {
	// 	if (prefab == null) return null;
	// 	var newInstance = prefab.Instantiate<T>();
	// 	Owner.CallDeferred("add_child", newInstance);
	// 	newInstance.Transform = this.GlobalTransform;
	// 	newInstance.Position = this.Position;
	//
	// 	return newInstance;
	// }

	public void Hit(float damage)
	{
		if (_isDestroyed) return;
		
		_currentHealth -= damage;
		if (!(_currentHealth <= 0)) return;
		_isDestroyed = true;
		Explode();
	}

	public bool IsDestroyed()
	{
		return _isDestroyed;
	}
}