Abstract returning-to-editor code to Game::returntoeditor()

This way I can easily move it around without moving around a bunch of
lines of code.

desktop_version/src/Game.cpp

@@ -7381,3 +7381,30 @@ void Game::returntolab()
 
     music.play(11);
 }
+
+#if !defined(NO_CUSTOM_LEVELS)
+void Game::returntoeditor()
+{
+    game.gamestate = EDITORMODE;
+
+    graphics.textboxremove();
+    game.hascontrol = true;
+    game.advancetext = false;
+    game.completestop = false;
+    game.state = 0;
+    graphics.showcutscenebars = false;
+    graphics.fademode = 0;
+
+    graphics.backgrounddrawn=false;
+    music.fadeout();
+    //If warpdir() is used during playtesting, we need to set it back after!
+    for (int j = 0; j < ed.maxheight; j++)
+    {
+        for (int i = 0; i < ed.maxwidth; i++)
+        {
+           ed.level[i+(j*ed.maxwidth)].warpdir=ed.kludgewarpdir[i+(j*ed.maxwidth)];
+        }
+    }
+    map.scrolldir = 0;
+}
+#endif

desktop_version/src/Game.h

@@ -385,6 +385,10 @@ public:
     int fadetomenudelay;
     bool fadetolab;
     int fadetolabdelay;
+
+#if !defined(NO_CUSTOM_LEVELS)
+    void returntoeditor();
+#endif
 };
 
 extern Game game;

desktop_version/src/Input.cpp

@@ -1537,27 +1537,7 @@ void gameinput()
                    game.activeactivity = -1;
                }
             }else{
-                game.gamestate = EDITORMODE;
+                game.returntoeditor();
-
-                graphics.textboxremove();
-                game.hascontrol = true;
-                game.advancetext = false;
-                game.completestop = false;
-                game.state = 0;
-                graphics.showcutscenebars = false;
-                graphics.fademode = 0;
-
-                graphics.backgrounddrawn=false;
-                music.fadeout();
-                //If warpdir() is used during playtesting, we need to set it back after!
-                for (int j = 0; j < ed.maxheight; j++)
-                {
-                    for (int i = 0; i < ed.maxwidth; i++)
-                    {
-                       ed.level[i+(j*ed.maxwidth)].warpdir=ed.kludgewarpdir[i+(j*ed.maxwidth)];
-                    }
-                }
-                map.scrolldir = 0;
             }
         }
     }