better menu

MainMenu/MainMenu.cs

@@ -4,24 +4,51 @@ using System;
 public class MainMenu : Control
 {
 
+    // Nodes for menu items
     private Main _main;
+    private Button _simulateButton;
+    private Button _toggleFullScreenButton;
+    private TextEdit _seedText;
+    private TextEdit _particleCountText;
 
     public override void _Ready()
     {
+        // Init nodes
         _main = GetTree().Root.GetNode<Main>("Main");
+        _simulateButton = GetNode("MenuButtons").GetNode<Button>("SimulateButton");
+        _toggleFullScreenButton = GetNode("MenuButtons").GetNode<Button>("ToggleFullscreenButton");
+        _seedText = GetNode("MenuButtons").GetNode<TextEdit>("SeedText");
+        _particleCountText = GetNode("MenuButtons").GetNode<TextEdit>("ParticleCountText");
+        
+        // Connect signals
+        _simulateButton.Connect("pressed", this, nameof(_OnSimulatePressed));
+        _toggleFullScreenButton.Connect("pressed", this, nameof(_OnToggleFullscreenPressed));
+        
+        // Random seed
+        GD.Randomize();
+        var randomSeed = (int)GD.Randi();
+       _seedText.Text = randomSeed.ToString();
     }
 
-    public void _on_Button_pressed()
+    public void _OnSimulatePressed()
     {
-        var nParticles = GetNode<VBoxContainer>("MenuButtons").GetNode<TextEdit>("TextEdit").Text.ToInt();
-        _main.StartSimulation(nParticles);
+        // Start simulation with seed and number of particles
+        var nParticles = _particleCountText.Text.ToInt();
+        var seed = _seedText.Text.ToInt();
+        _main.StartSimulation(seed, nParticles);
     }
 
-    public void _on_ToggleFullscreen_pressed()
+    public void _OnToggleFullscreenPressed()
     {
-        if (OS.WindowFullscreen)
-            OS.WindowFullscreen = false;
-        else
-            OS.WindowFullscreen = true;
+        OS.WindowFullscreen = !OS.WindowFullscreen;
+    }
+
+    public override void _Input(InputEvent @event)
+    {
+        // Quit only if menu is visible
+        if (Visible && @event.IsActionPressed("quit"))
+        {
+            GetTree().Quit();
+        }
     }
 }