/// <summary> /// 蛇的转向 /// </summary> /// <param name="nextDirection">想要改变的方向</param> public void TurnDirection(util.Direction nextDirection) { switch (_direction) { case util.Direction.Up: if (nextDirection == util.Direction.Right) { _direction = nextDirection; } else if (nextDirection == util.Direction.Left) { _direction = nextDirection; } break; case util.Direction.Down: if (nextDirection == util.Direction.Right) { _direction = nextDirection; } else if (nextDirection == util.Direction.Left) { _direction = nextDirection; } break; case util.Direction.Left: if (nextDirection == util.Direction.Up) { _direction = nextDirection; } else if (nextDirection == util.Direction.Down) { _direction = nextDirection; } break; case util.Direction.Right: if (nextDirection == util.Direction.Up) { _direction = nextDirection; } else if (nextDirection == util.Direction.Down) { _direction = nextDirection; } break; } }
private Snake() { _blocks.Add(new Block(true, new Point(util.Width / 2, util.Height / 2))); //初始化时只有蛇头 _length = 1; _direction = util.Direction.NULL; }