Tetris/ViewsModels/GameViewModel.cs

using System;
using System.ComponentModel;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Threading;

namespace Tetris.ViewsModels;

public class GameViewModel : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler? PropertyChanged;
    
    private const int RendererHertz = 5;
    private const int GameRendererHertz = (1 / RendererHertz) * 1000;
    private readonly int _width = 480, _height = 640;
    private readonly WriteableBitmap _writeableBitmap;

    public GameViewModel()
    {
        _writeableBitmap = BitmapFactory.New(_width, _height);
        // image.Source = _writeableBitmap;
        
        var dispatcherRenderTimer = new DispatcherTimer
        {
            Interval = new TimeSpan(0, 0, 0, 0, GameRendererHertz)
        };
        
        dispatcherRenderTimer.Tick += Render;
        dispatcherRenderTimer.Start();
        
        var dispatcherUpdateTimer = new DispatcherTimer
        {
            Interval = new TimeSpan(0, 0, 0, 0, 25)
        };
        
        dispatcherUpdateTimer.Tick += Update;
        dispatcherUpdateTimer.Start();
    }

    public int Width => _width;
    public int Height => _height;
    public ImageSource Source => _writeableBitmap;

    private void Render(object? sender, EventArgs eventArgs)
    {
        _writeableBitmap.Lock();
        _writeableBitmap.Clear(Colors.Black);

        _writeableBitmap.Unlock();
    }
    
    private void Update(object? sender, EventArgs eventArgs)
    {
        
    }
}