using Godot;

namespace Scripts;
[GlobalClass]
public partial class Asteroid : Node3D {
	[Export] private RigidBody3D asteroidRb;
	[Export] private MeshInstance3D asteroidMesh;
	[Export] private PackedScene explosion;

	private float speed;
	private float rotSpeed = 100f;
	private float size;
	private Vector3 rotation;

	public override void _Ready() {
		size = GD.Randf();
		asteroidRb.Mass = size;
		speed = GD.Randf() * 5f + 1f;

		asteroidRb.Scale = new(size, size,size);
		asteroidMesh.Scale = new(size, size,size);
		
		rotation = new((float)GD.RandRange(-rotSpeed, rotSpeed), (float)GD.RandRange(-rotSpeed, rotSpeed), (float)GD.RandRange(-rotSpeed, rotSpeed));
		Position = new((float)GD.RandRange(-3.7, 3.7), 0, -6.4f);
	}

	public override void _Process(double delta) {
		// Position += new Vector3(0, 0, speed * (float)delta);
		// RotationDegrees += rotation * (float)delta;
	}

	public override void _PhysicsProcess(double delta) {
		asteroidRb.Rotate(rotation.Normalized(), (float)delta);

		KinematicCollision3D collision = asteroidRb.MoveAndCollide(new(0, 0, speed * (float)delta));
		if (collision?.GetCollider() is Node3D collider) {
			GD.Print($"{Name} collides with {collider.GetParentNode3D().Name}");
			Vector3 collisionPosition = collision.GetPosition();
			if (collider is Asteroid asteroid) asteroid.Explode(collisionPosition);
			Explode(collisionPosition);
		}

		//TODO: Change into collision with outer box
		// if (Position.Z >= 6.4f) {
		// 	GD.Print($"Asteroid {Name} below screen!");
		// 	Explode(collisionPosition);
		// }
	}

	private void Explode(Vector3 collisionPosition) {
		if (explosion.Instantiate() is GpuParticles3D ex) {
			GetParent().AddChild(ex);
			ex.Position = collisionPosition;
			ex.Emitting = true;
		}

		QueueFree();
	}
}