Program: 164109
Project: 164109
Buggy source:
private boolean getCloser(final int target){
  if (target == pos)   return false;
  if (rooted) {
    Camera.main.shake(1,1f);
    return false;
  }
  int step=-1;
  if (Dungeon.level.adjacent(pos,target)) {
    path=null;
    if (Actor.findChar(target) == null) {
      if (Level.pit[target] && !flying && !Level.solid[target]) {
        if (!Chasm.jumpConfirmed) {
          Chasm.heroJump(this);
          interrupt();
        }
 else {
          Chasm.heroFall(target);
        }
        return false;
      }
      if (Level.passable[target] || Level.avoid[target]) {
        step=target;
      }
    }
  }
 else {
    boolean newPath=false;
    if (path == null || path.isEmpty())     newPath=true;
 else     if (path.getLast() != target)     newPath=true;
 else {
      for (int i=0; i < Math.min(path.size(),2); i++) {
        int cell=path.get(i);
        if (!Level.passable[cell] || ((i != path.size() - 1) && Dungeon.visible[cell] && Actor.findChar(cell) != null)) {
          newPath=true;
          break;
        }
      }
    }
    if (newPath) {
      int len=Dungeon.level.length();
      boolean[] p=Level.passable;
      boolean[] v=Dungeon.level.visited;
      boolean[] m=Dungeon.level.mapped;
      boolean[] passable=new boolean[len];
      for (int i=0; i < len; i++) {
        passable[i]=p[i] && (v[i] || m[i]);
      }
      path=Dungeon.findPath(this,pos,target,passable,Level.fieldOfView);
    }
    if (path == null)     return false;
    step=path.removeFirst();
  }
  if (step != -1) {
    sprite.move(pos,step);
    move(step);
    spend(1 / speed());
    return true;
  }
 else {
    return false;
  }
}

Fixed version (ground truth):
private boolean getCloser(final int target){
  if (target == pos)   return false;
  if (rooted) {
    Camera.main.shake(1,1f);
    return false;
  }
  int step=-1;
  if (Dungeon.level.adjacent(pos,target)) {
    path=null;
    if (Actor.findChar(target) == null) {
      if (Level.pit[target] && !flying && !Level.solid[target]) {
        if (!Chasm.jumpConfirmed) {
          Chasm.heroJump(this);
          interrupt();
        }
 else {
          Chasm.heroFall(target);
        }
        return false;
      }
      if (Level.passable[target] || Level.avoid[target]) {
        step=target;
      }
    }
  }
 else {
    boolean newPath=false;
    if (path == null || path.isEmpty() || !Dungeon.level.adjacent(pos,path.getFirst()))     newPath=true;
 else     if (path.getLast() != target)     newPath=true;
 else {
      for (int i=0; i < Math.min(path.size(),2); i++) {
        int cell=path.get(i);
        if (!Level.passable[cell] || ((i != path.size() - 1) && Dungeon.visible[cell] && Actor.findChar(cell) != null)) {
          newPath=true;
          break;
        }
      }
    }
    if (newPath) {
      int len=Dungeon.level.length();
      boolean[] p=Level.passable;
      boolean[] v=Dungeon.level.visited;
      boolean[] m=Dungeon.level.mapped;
      boolean[] passable=new boolean[len];
      for (int i=0; i < len; i++) {
        passable[i]=p[i] && (v[i] || m[i]);
      }
      path=Dungeon.findPath(this,pos,target,passable,Level.fieldOfView);
    }
    if (path == null)     return false;
    step=path.removeFirst();
  }
  if (step != -1) {
    sprite.move(pos,step);
    move(step);
    spend(1 / speed());
    return true;
  }
 else {
    return false;
  }
}