小编Dav*_*ori的帖子

我在Processing(Java)中创建了以下草图:

ArrayList<Piece> pieces = new ArrayList<Piece>();

void setup() {
  size(300, 300);
  pieces.add(new Piece(100, 200)); // I ADD ONE PIECE TO THE ARRAY LIST 
}

void draw() {
  background(0);
  for (int i = 0; i < pieces.size(); i++) {
    Piece p = pieces.get(i);
    p.display(); // I WANT TO DRAW THE PIECE I'VE CREATED IN SETUP()
  }
}

class Piece {
  int x;
  int y;

  Piece (int x, int y) {
    x = x;
    y = y;
  }

  void display() {
    fill(255); …