Engine-Pong/Shared/GamePong.cs

using System;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;

using Pong.Behaviours;
using Apos.Shapes;

using Syntriax.Engine.Core;
using Syntriax.Engine.Core.Abstract;
using Syntriax.Engine.Physics2D;

namespace Pong;

public class GamePong : Game
{
    private readonly IHierarchyObject platformSpecificHierarchyObject = null!;
    private readonly GraphicsDeviceManager graphics = null!;
    private SpriteBatch spriteBatch = null!;
    private ShapeBatch shapeBatch = null!;

    private GameManager gameManager = null!;
    private BehaviourCollector<IDisplayableSprite> displayableCollector = null!;
    private BehaviourCollector<IDisplayableShape> displayableShapeCollector = null!;
    private MonoGameCamera2DBehaviour cameraBehaviour = null!;

    private PongManagerBehaviour pongManager = null!;

    public GamePong(IHierarchyObject platformSpecificHierarchyObject)
    {
        this.platformSpecificHierarchyObject = platformSpecificHierarchyObject;
        graphics = new GraphicsDeviceManager(this)
        {
            PreferredBackBufferWidth = 1024,
            PreferredBackBufferHeight = 576,
            GraphicsProfile = GraphicsProfile.HiDef
        };

        Content.RootDirectory = "Content";
        IsMouseVisible = true;
    }

    protected override void Initialize()
    {
        // TODO: Add your initialization logic here
        gameManager = new();
        displayableCollector = new(gameManager);
        displayableShapeCollector = new(gameManager);

        gameManager.Initialize();

        base.Initialize();
    }

    protected override void LoadContent()
    {
        spriteBatch = new SpriteBatch(GraphicsDevice);
        shapeBatch = new ShapeBatch(GraphicsDevice, Content);
        SpriteFont spriteFont = Content.Load<SpriteFont>("UbuntuMono");

        gameManager.Register(platformSpecificHierarchyObject);
        gameManager.InstantiateHierarchyObject<PhysicsEngine2D>().SetHierarchyObject("Physics Engine 2D");

        ////////////////////////////////////////////////////////////////////////////////////

        IHierarchyObject HierarchyObjectCamera = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Camera"); ;
        HierarchyObjectCamera.BehaviourController.AddBehaviour<Transform2D>();

        HierarchyObjectCamera.BehaviourController.AddBehaviour<CameraController>();
        cameraBehaviour = HierarchyObjectCamera.BehaviourController.AddBehaviour<MonoGameCamera2DBehaviour>(graphics);

        ////////////////////////////////////////////////////////////////////////////////////

        IHierarchyObject HierarchyObjectPongManager = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Pong Game Manager");
        pongManager = HierarchyObjectPongManager.BehaviourController.AddBehaviour<PongManagerBehaviour>(5);

        ////////////////////////////////////////////////////////////////////////////////////

        IHierarchyObject HierarchyObjectBall = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Ball");
        HierarchyObjectBall.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(0, 0f), scale: new Vector2D(10f, 10f));

        HierarchyObjectBall.BehaviourController.AddBehaviour<CircleBehaviour>(new Circle(Vector2D.Zero, 1f));
        HierarchyObjectBall.BehaviourController.AddBehaviour<BallBehaviour>();
        HierarchyObjectBall.BehaviourController.AddBehaviour<RigidBody2D>();

        ////////////////////////////////////////////////////////////////////////////////////

        IHierarchyObject HierarchyObjectLeftPaddle = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Left Paddle");
        HierarchyObjectLeftPaddle.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(-468f, 0f), scale: new Vector2D(15f, 60f));

        HierarchyObjectLeftPaddle.BehaviourController.AddBehaviour<PaddleBehaviour>(Keys.W, Keys.S, 228f, -228f, 400f);
        HierarchyObjectLeftPaddle.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape2D.Square);
        HierarchyObjectLeftPaddle.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;

        IHierarchyObject HierarchyObjectRightPaddle = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Right Paddle");
        HierarchyObjectRightPaddle.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(468f, 0f), scale: new Vector2D(15f, 60f));
        HierarchyObjectRightPaddle.BehaviourController.AddBehaviour<PaddleBehaviour>(Keys.Up, Keys.Down, 228f, -228f, 400f);
        HierarchyObjectRightPaddle.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape2D.Square);
        HierarchyObjectRightPaddle.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;

        ////////////////////////////////////////////////////////////////////////////////////

        IHierarchyObject HierarchyObjectWallTop = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Wall Top");
        HierarchyObjectWallTop.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(0f, 308f), scale: new Vector2D(552f, 20f));
        HierarchyObjectWallTop.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape2D.Square);
        HierarchyObjectWallTop.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;

        IHierarchyObject HierarchyObjectWallBottom = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Wall Bottom");
        HierarchyObjectWallBottom.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(0f, -308f), scale: new Vector2D(552f, 20f));
        HierarchyObjectWallBottom.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape2D.Square);
        HierarchyObjectWallBottom.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;

        IHierarchyObject HierarchyObjectWallRight = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Wall Right");
        HierarchyObjectWallRight.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(532f, 0f), scale: new Vector2D(20f, 328f));
        HierarchyObjectWallRight.BehaviourController.AddBehaviour<WallScoreBehaviour>((Action)pongManager.ScoreToLeft);
        HierarchyObjectWallRight.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape2D.Square);
        HierarchyObjectWallRight.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;

        IHierarchyObject HierarchyObjectWallLeft = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Wall Left");
        HierarchyObjectWallLeft.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(-532f, 0f), scale: new Vector2D(20f, 328f));
        HierarchyObjectWallLeft.BehaviourController.AddBehaviour<WallScoreBehaviour>((Action)pongManager.ScoreToRight);
        HierarchyObjectWallLeft.BehaviourController.AddBehaviour<ShapeBehaviour>(Shape2D.Square);
        HierarchyObjectWallLeft.BehaviourController.AddBehaviour<RigidBody2D>().IsStatic = true;

        ////////////////////////////////////////////////////////////////////////////////////

        IHierarchyObject HierarchyObjectLeftScoreText = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Score Left");
        HierarchyObjectLeftScoreText.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(-250f, 250f), scale: Vector2D.One * .25f);
        HierarchyObjectLeftScoreText.BehaviourController.AddBehaviour<TextScoreBehaviour>(true, spriteFont);

        IHierarchyObject HierarchyObjectRightScoreText = gameManager.InstantiateHierarchyObject<HierarchyObject>().SetHierarchyObject("Score Right");
        HierarchyObjectRightScoreText.BehaviourController.AddBehaviour<Transform2D>().SetTransform(position: new Vector2D(250f, 250f), scale: Vector2D.One * .25f);
        HierarchyObjectRightScoreText.BehaviourController.AddBehaviour<TextScoreBehaviour>(false, spriteFont);
    }

    protected override void Update(GameTime gameTime)
    {
        if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
            Exit();

        gameManager.Update(gameTime.ToEngineTime());

        base.Update(gameTime);
    }

    protected override void Draw(GameTime gameTime)
    {
        GraphicsDevice.Clear(new Color() { R = 32, G = 32, B = 32 });

        // TODO: Add your drawing code here
        gameManager.PreDraw();

        spriteBatch.Begin(SpriteSortMode.Deferred, transformMatrix: cameraBehaviour.MatrixTransform);
        foreach (var displayable in displayableCollector)
            displayable.Draw(spriteBatch);
        spriteBatch.End();

        shapeBatch.Begin(cameraBehaviour.MatrixTransform);
        foreach (var displayableShape in displayableShapeCollector)
            displayableShape.Draw(shapeBatch);
        shapeBatch.End();

        base.Draw(gameTime);
    }
}