Walk In From Shutter FFC

//D0: Door position. See std_constants for Door Index
// 0 == top door, 1 == bottom door, 2== left door, 3 == right door
ffc script WalkInFromShutter
{
     void run(int dir)
     {
          while(LinkCollision(this)
          {
               if (dir == DOOR_UP ) ++Link->Y;
               else if ( dir == DOOR_DOWN ) --Link->Y;
               else if ( dir == DOOR_LEFT ) ++Link->X;
               else --Link->X;
          }
     }
}
```