Add a new platformer game with various levels and enemies

The agent has updated the game's core logic, including player movement, enemy AI, collision detection, and level loading. New sprites and sound effects have been integrated, along with the addition of a Chess game. The replit.nix file has been configured to include jdk21 and neovim.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: f6819c21-e85d-45ac-acde-604db2cfa4fe
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: 32bc3e83-133e-4485-96b6-ff3d548bcbfd
Replit-Helium-Checkpoint-Created: true

Chess/Chess.java

@@ -0,0 +1,73 @@
+import java.util.ArrayList;
+import java.awt.*;
+import javax.swing.*;
+import java.awt.event.*;
+import javax.swing.border.*;
+import java.awt.Color;
+
+
+public class Chess extends JPanel implements ActionListener{
+    
+    //pieces stuff
+    ArrayList<Piece> white;
+    ArrayList<Piece> black;
+    
+    //game vars
+    int boardWidth, boardHeight;
+    boolean whiteTurn;
+    Timer gameTimer;
+    Color creme = new Color(254,245,218);
+    Color brown = new Color(121,92,50);
+    
+    public Chess(int boardWidth, int boardHeight){
+        this.boardWidth = boardWidth;
+        this.boardHeight = boardHeight;
+        setPreferredSize(new Dimension(this.boardWidth, this.boardHeight));
+        setBackground(Color.WHITE);
+        setFocusable(true);
+        
+        white = new ArrayList<>();
+        black = new ArrayList<>();
+        
+        for (int i =0 ; i <= 7; i++){
+            white.add(new Pawn(i+1,2,"White"));
+        }
+        for (int i =0 ; i <= 7; i++){
+            black.add(new Pawn(i+1,7,"Black"));
+        }
+        
+        gameTimer = new Timer(200,this);
+        
+        gameTimer.start();
+        repaint();
+    }
+    
+    public void gameLoop(){
+        
+    }
+    
+    public void draw(Graphics g){
+        
+        //draw board
+        for (int i = 1; i <= 8; i++){
+            for (int j = 1; j<= 8; j++){
+                g.setColor((i%2 == 1 && j%2 == 1 ) || (i%2==0 && j%2 == 0)? creme : brown);
+                g.fillRect(i * 40, j * 40, 40, 40);
+            }
+        }
+        
+        //draw pieces
+        for (Piece p : white) p.draw(g);
+        for (Piece p : black) p.draw(g);
+    }
+    
+    public void paintComponent(Graphics g){
+        super.paintComponent(g);
+        draw(g);
+    }
+    
+    public void actionPerformed(ActionEvent e){
+        gameLoop();
+        repaint();
+    }
+}