Add hit bottom check and auto Tetrominoe swap

Models/Game.cs

@@ -1,38 +1,71 @@
-using System.ComponentModel;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Drawing;
 
 namespace Tetris.Models;
 
-public class Party : INotifyPropertyChanged
+public class Game : INotifyPropertyChanged {
-{
+    private Random _random = new Random();
-    private int _score;
     
     private string _userName;
 
-    public Party(string userName)
+    public string UserName {
-    {
-        _userName = userName;
-    }
-
-    public string UserName
-    {
         get => _userName;
-        set
+        set {
-        {
             _userName = value;
             OnPropertyChanged("UserName");
         }
     }
 
-    public int Score
+    private int _score;
-    {
+    
+    public int Score {
         get => _score;
-        set
+        set {
-        {
             _score = value;
             OnPropertyChanged("Score");
         }
     }
 
+    private Grid _grid;
+
+    public Grid Grid => _grid;
+
+    private Tetrominoe? _currentTetrominoe;
+    public Tetrominoe? CurrentTetrominoe => _currentTetrominoe;
+
+    private Tetrominoe? _nextTetrominoe;
+    public Tetrominoe? NextTetrominoe => _nextTetrominoe;
+
+    public Game(string userName, Grid grid) {
+        _userName = userName;
+        _grid = grid;
+        _currentTetrominoe = GetNewTetrominoe();
+        _nextTetrominoe = GetNewTetrominoe();
+    }
+
+    public bool HitBottom() {
+        if (_currentTetrominoe == null)
+            return false;
+
+        return !_grid.CanGo(_currentTetrominoe, _currentTetrominoe.Coordinates + new Size(0, 1));
+    }
+
+    public void PrintTetrominoe() {
+        if (_currentTetrominoe == null)
+            return;
+        
+        _grid.PrintTetrominoe(_currentTetrominoe);
+        _currentTetrominoe = _nextTetrominoe;
+        _nextTetrominoe = GetNewTetrominoe();
+    }
+
+    public Tetrominoe GetNewTetrominoe() {
+        List<String> tetrominoes = TetrominoeParser.List();
+        return new Tetrominoe(_grid, tetrominoes[_random.Next(tetrominoes.Count)]);
+    }
+
     public event PropertyChangedEventHandler PropertyChanged;
 
     protected virtual void OnPropertyChanged(string propertyName)