Erste Version

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Input.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace BSO
+{
+    /// <summary>Tasten der Mod (F8-F11): "gerade gedrueckt" erkennen, nur wenn das Spielfenster vorne ist.</summary>
+    public static class Input
+    {
+        [DllImport("user32.dll")] static extern short GetAsyncKeyState(int key);
+        [DllImport("user32.dll")] static extern nint GetForegroundWindow();
+        [DllImport("user32.dll")] static extern uint GetWindowThreadProcessId(nint window, out uint process);
+
+        public const int F8 = 0x77, F9 = 0x78, F10 = 0x79, F11 = 0x7A;
+
+        static readonly bool[] down = new bool[256], pressed = new bool[256];
+        static readonly int[] watched = { F8, F9, F10, F11 };
+
+        /// <summary>Einmal pro Bild vor allen Pressed-Abfragen.</summary>
+        public static void Update()
+        {
+            bool focus = GameHasFocus();
+            foreach (int key in watched)
+            {
+                bool now = focus && GetAsyncKeyState(key) < 0;
+                pressed[key] = now && !down[key];
+                down[key] = now;
+            }
+        }
+
+        public static bool Pressed(int key) => pressed[key];
+
+        public static bool GameHasFocus()
+        {
+            GetWindowThreadProcessId(GetForegroundWindow(), out uint pid);
+            return pid == (uint)Environment.ProcessId;
+        }
+    }
+}