using Godot;

public class GameController : Node
{
// PackedScene containing the bullet node
private PackedScene bulletScene;

// PackedScene containing the decal node
private PackedScene decalScene;

public override void _Ready()
{
    // Load the packed scenes
    bulletScene = ResourceLoader.Load<PackedScene>("res://Bullet.tscn");
    decalScene = ResourceLoader.Load<PackedScene>("res://Decal.tscn");
}

public void ShootBullet(Vector3 startPosition, float speed)
{
    // Instantiate the bullet node from the packed scene
    var bullet = (RigidBody3D)bulletScene.Instance();
    AddChild(bullet);

    // Set the bullet's initial position and velocity
    bullet.Translation = startPosition;
    bullet.LinearVelocity = Vector3.Forward * speed;

    // Connect the bullet's collision signal to a method that will handle collisions
    bullet.Connect("body_entered", this, nameof(OnBulletCollision));
}

private void OnBulletCollision(Node body)
{
    // Destroy the bullet node
    var bullet = (RigidBody3D)body;
    bullet.QueueFree();

    // Instantiate the decal node from the packed scene
    var decal = (Spatial)decalScene.Instance();
    AddChild(decal);

    // Set the decal's position to the point of impact
    decal.Translation = bullet.GlobalTransform.origin;

    // Set the decal's rotation to match the surface normal of the collision
    if (bullet.GetCollisionNormal() != Vector3.Zero)
    {
        decal.Rotation = bullet.GetCollisionNormal().Normalized().Orthogonalize();
    }
}

}