C语言－－自制-拼图游戏2

80; point[i].y=384;  break;
            default:MessageBox(NULL,"初始化point[i]坐标错误!","",NULL);
            }
        }
        break;
    default:;
    }
    srand((unsigned)time(NULL));

    for(int k=0;k<200;k++)
    {
        switch(rand()%4)
        {
        case 0:
            if((now_pos+1) % line!=1)
            {
                Change_Block(now_pos,now_pos+1);
                now_pos++;
            }
            break;
        case 1:
            if((now_pos-1) % line!=0)
            {
                Change_Block(now_pos,now_pos-1);
                now_pos--;
            }
            break;
        case 2:
            if(now_pos+line < line*line)
            {
                Change_Block(now_pos,now_pos+line);
                now_pos+=line;
            }
            break;
        case 3:
            if(now_pos-line>0)
            {
                Change_Block(now_pos,now_pos-line);
                now_pos-=line;
            }
            break;
        default:;
        }
    }
}