用NetBeans开发J2ME游戏实例讲解（三）[9]

                         ( !(canMove(DIRECTION_UP))&&!(canMove(DIRECTION_LEFT))&&!(canMove(DIRECTION_RIGHT)))||//而且只有这一种走法

                         !( nextCursor[0] == lastStep[0] && nextCursor[1]+1 == lastStep[1] && lastStep[4] == DIRECTION_UP) )//或者不是走原路

                        this.nextCursor[1]++;//向下移动一下

                    else if (canMove(DIRECTION_UP))

                        this.nextCursor[1]--;//向上移动一下

                    else if (canMove(DIRECTION_LEFT))

                        this.nextCursor[0]--;//向左移动一下

                    else if (canMove(DIRECTION_RIGHT))

                        this.nextCursor[0]++;//向右移动一下

                    Move();

                    repaint();

                    break;

                }

                 //向左

                if (canMove(DIRECTION_LEFT)) {

                    if ( ( nextCursor[0]-1 == lastStep[0] && nextCursor[1] == lastStep[1] && lastStep[4] == DIRECTION_RIGHT) && //如果是走回头路

                         ( !(canMove(DIRECTION_UP))&&!(canMove(DIRECTION_DOWN))&&!(canMove(DIRECTION_RIGHT)))||//而且只有这一种走法

                         !( nextCursor[0]-1 == lastStep[0] && nextCursor[1] == lastStep[1] && lastStep[4] == DIRECTION_RIGHT) )//或者不是走原路

                        this.nextCursor[0]--;//向左移动一下

                    else if (canMove(DIRECTION_UP))

                        this.nextCursor[1]--;//向上移动一下

                    else if (canMove(DIRECTION_DOWN))

                        this.nextCursor[1]++;//向下移动一下

                    else if (canMove(DIRECTION_RIGHT))

                        this.nextCursor[0]++;//向右移动一下

                    Move();

                    repaint();

                    break;

                }