change player on tab

src/game.d

@@ -26,6 +26,7 @@ class Game
 public:
     void change_player()
     {
+        m_pindex = (m_pindex + 1) % 2;
     }
     void handle_move_event(ref MoveEvent me)
     {
@@ -34,4 +35,5 @@ public:
 protected:
     uint m_tick;
     Player[2] m_players;
+    int m_pindex;
 };

src/main.d

@@ -101,6 +101,9 @@ int main(char[][] args)
                     break;
                 case SDLK_s:
                     break;
+                case SDLK_TAB:
+                    game.change_player();
+                    break;
                 default:
                     break;
                 }