starfighter/MB_FYP/script/game.cs

using Godot;
using System;

public partial class game : Node2D
{
	public Node Lasers;
	public CharacterBody2D Player;
	public Node Asteroids;

	public Node Friendlies;

	public Node Enemies;

	public Node Ships;

	public Control HUD;

	public Label ScoreLabel;

	public Label HealthLabel;

	public Label FlightAssistLabel;

	public hud H;


	private readonly PackedScene _asteroidScene = GD.Load<PackedScene>("res://scenes/asteroid.tscn");

	public int Score = 0;

	public override void _Ready()
	{
		HUD = GetNode<Control>("UI/HUD");
		ScoreLabel = GetNode<Label>("UI/HUD/Score");
		FlightAssistLabel = GetNode<Label>("UI/HUD/FlightAssist");
		//HealthLabel = GetNode<Label>("UI/HUD/Health");
		Asteroids = GetNode<Node>("Asteroids");

		Lasers = GetNode<Node>("Lasers");
		Ships = GetNode<Node>("Ships");
		Enemies = GetNode<Node>("Ships/Enemy");
		Friendlies = GetNode<Node>("Ships/Friendly");
		Player = GetNode<CharacterBody2D>("Ships/Friendly/Player");


		//AI fighter signals
		foreach (Node node in Enemies.GetChildren())
		{
			if (node is ai_fighter ai)
			{
				GD.Print("Connected laser signal for: ", ai.Name);

				ai.LaserShot += OnAILaserShot;
			}
		}
		
		foreach (Node node in Friendlies.GetChildren())
		{
			if (node is player) continue;

			if (node is ai_fighter ai)
			{
				GD.Print("Connected laser signal for: ", ai.Name);

				ai.LaserShot += OnAILaserShot;
			}
		}

		//var p = new player();
		//p.LaserShot += OnPlayerLaserShot;	
	}

	public override void _Process(double delta)
	{
		if (Input.IsActionJustPressed("reset"))
		{
			GetTree().ReloadCurrentScene();
		}

		if (Input.IsActionJustPressed("toggle_fa"))
		{
			UpdateFALabel();
		}

		 //AUTO SPAWN AFTER CLEAR
		if (Asteroids.GetChildCount() == 0)
		{
			Random rand = new Random();
			for (int i = 0; i < rand.Next(1, 5); i++)
			{
				SpawnAsteroid(new Vector2(rand.Next(10, 800), rand.Next(10, 800)), (int)asteroid.AsteroidSize.LARGE);
			}
		}
	}

	public void SpawnAsteroid(Vector2 position, int size)
	{
		var a = new asteroid();
		a = _asteroidScene.Instantiate<asteroid>();
		a.GlobalPosition = position;
		a.Size = (asteroid.AsteroidSize)size;
		a.Exploded += OnAsteroidExploded;
		Asteroids.CallDeferred("add_child", a);
	}

	public void UpdateScoreLabel(int score)
	{
		/*var h = new hud();
		GD.Print(h.Score);
		h.Score.Text = "SCORE: " + score.ToString();
		GD.Print(h.Score.Text);*/

		ScoreLabel.Text = "SCORE: " + score.ToString();
	}

	public void UpdateHealthLabel(int health)
	{
		if (HealthLabel == null)
		{
			HealthLabel = GetNode<Label>("UI/HUD/Health");
		}
		HealthLabel.Text = "HEALTH: " + health.ToString();
	}

	public void UpdateFALabel()
	{
		// Bit of a hacky implementation I think, but it works.
		if (FlightAssistLabel.Text == "FA: OFF"){FlightAssistLabel.Text = "FA: ON";}
		else if (FlightAssistLabel.Text == "FA: ON"){FlightAssistLabel.Text = "FA: OFF";}
	}

//Signals and Connections
	public void OnAILaserShot(Area2D Laser)
	{
		Lasers.AddChild(Laser);
	}

	public void OnPlayerLaserShot(Area2D laser)
	{
		Lasers.AddChild(laser);
		GD.Print(laser.Position);
		GD.Print(Player.Position);
	}

	public void OnPlayerHealthUpdate(int health)
	{
		UpdateHealthLabel(health);
	}

	public void OnPlayerDeath()
	{
		CallDeferred(nameof(SafeReloadScene)); //Reload scene to act as restart
	}

	private void SafeReloadScene()
	{
		GD.Print("Reloading scene");
		GetTree().ReloadCurrentScene();
	}

	public void OnAsteroidExploded(Vector2 pos, int size)
	{
		// DEBUG PRINT
		GD.Print($"DEBUG: Asteroid exploded at {pos}, size: {size}");
		if (size == 0)
		{
			for (int i = 0; i < 2; i++){
				SpawnAsteroid(pos, (int)asteroid.AsteroidSize.MEDIUM);
			}
			Score += 60;
		}
		else if (size == 1)
		{
			for (int i = 0; i < 2; i++){
				SpawnAsteroid(pos, (int)asteroid.AsteroidSize.SMALL);
			}
			Score += 40;
		}
		else if (size == 2)
		{
			Score += 20;
		}
		GD.Print(Score);
		UpdateScoreLabel(Score);
	}
}