Can now open secret walls and pick up machine gun

Signed-off-by: Hans Kokx <hans.d.kokx@gmail.com>

lib/features/entities/door_manager.dart

@@ -46,9 +46,20 @@ class DoorManager {
     return offsets;
   }
 
+  void tryOpenDoor(int x, int y) {
+    String key = '$x,$y';
+    if (doors.containsKey(key)) {
+      // If it's closed or closing, interact() will usually start it opening
+      if (doors[key]!.offset == 0.0) {
+        doors[key]!.interact();
+      }
+    }
+  }
+
   bool isDoorOpenEnough(int x, int y) {
     String key = '$x,$y';
     if (doors.containsKey(key)) {
+      // 0.7 offset means 70% open, similar to the original engine's check
       return doors[key]!.offset > 0.7;
     }
     return false; // Not a door we manage