Hidden map objects are no longer rendered.

src/in_game.c

@@ -335,10 +335,14 @@ void render(int w, int h){
 
 							if(objs[k].type == DOOR){
 								printw("\u25D9");
-							}else if(objs[k].type == KEY){
+							}else{
+                                if(vis[dj][di]){
+                                    if(objs[k].type == KEY){
                                         printw("k");
                                     }else if(objs[k].type == PERSON){
                                         printw("\u263A");
+                                    }
+                                }
                             }
 						}
 					}