我的while循环中的错误并不总是显示

Question

我正在尝试制作一个随机地图生成器。

地图是24x24。

错误并不总是显示。当它显示时它位于函数末尾的“Do / While”循环中。

特别是在“while”行。

function randKeyRoomsLoc(tempMap, dir, locked, room, displayRooms, before){
  var location = [];//creates array to store rooms location
  if (dir == "n" || dir == "w") {//if directions is NORTH or west
    if (before) {
      before = false;//if before is true turn to false
    }else {
      before = true;// if before is false turn to true
    }
  }
  if (dir == "w" || dir == "e") {// if directions is W or E
    var lockedRoom = locked[1];
  }else {
    var lockedRoom = locked[0];
  }
  for (var i = 0; i < room.length; i++) {//loops thru the rooms
    if (before) {//are the rooms being place before locked?
      var tempX = lockedRoom + 2;//limist the 2 spaces from the LR
      x = Math.floor(Math.random()*(22 - tempX+1)+tempX);//limits the spawn 
      y = Math.floor((Math.random() * 24));
    }else {//are the rooms being place after locked?
      var tempX = lockedRoom - 2;//limist the 2 spaces from the LR
      x = Math.floor(Math.random()*(tempX - 0 + 1) + 0);//limits 
      y = Math.floor((Math.random() * 24));
    }
    if (dir == "w" || dir == "e") {//needs to exchange X & Y if W or E
      var tempX = y;
      var tempY = x;
      y = tempY;
      x = tempX
    }
    if (tempMap[x][y] == "#") {//checks to see the room is empty
      tempMap[x][y] = jQuery.extend(true, {}, room[i]);
      displayMap[x][y] = displayRooms[i];
    }else {//if its not empty
      if(dir == "w" || dir == "e"){// IF W OR E--------------------
        do {//excecute this once
          if (x < 21) {//if Y is less than the end
            x++;// we move Y one to the right
            if (y < lockedRoom) {//if X is less than the X of locked room
              y++;//moves X up
            }else {//if X is = or more than the X of lock
              y--;//moves it down
            }
          }else {//if Y is close to the end
            x--;//we move it back 5 places
            if (y < lockedRoom) {//if X is less than the X of locked room
              y++;//moves X up
            }else {//if X is = or more than the X of lock
              y--;//moves it down
            }
          }
        } while (tempMap[x][y] != "#");//check if room is empty,not loops
        tempMap[x][y] = jQuery.extend(true, {}, room[i]);
        displayMap[x][y] = displayRooms[i];
      }else {// IF S OR N---------------------------------------
        do {//excecute this once
          if (y < 21) {//if Y is less than the end
            y++;// we move Y one to the right
            if (x < lockedRoom) {//if X is less than the X of locked room
              x--;//moves X up
            }else {//if X is = or more than the X of lock
              x++;//moves it down
            }
          }else {//if Y is close to the end
            y--;//we move it back 5 places
            if (x < lockedRoom) {//if X is less than the X of locked room
              x--;//moves X up
            }else {//if X is = or more than the X of lock
              x++;//moves it down
            }
          }
        } while (tempMap[x][y] != "#");//check if room is empty,not loops
        tempMap[x][y] = jQuery.extend(true, {}, room[i]);
        displayMap[x][y] = displayRooms[i];
      }
    }
    location.push([x,y]);//saves the location of the room
  }
  return location;//returns the locations of all the rooms
}