7.5 实时下棋(1)
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7.5.1? 实时下棋的子程序
让我们先想想两个人实时下棋需要哪些子程序：
初始化棋盘与棋子
清空棋盘子函数
走棋子程序
检查胜负子程序
1．初始化棋盘与棋子
首先让我们看看前面没有讲的（begin_play）那一帧的内容吧，这一帧实际上就是初始化棋盘与棋子。其程序代码如下：
//棋盘的初始位置
begin_x = 30;
begin_y = 40;
distance = 36;
chessman_number = 1;
//处理当前下棋位置闪烁功能
attachMovie("point", "obj_Flash_point", 1000);
_root.obj_flash_point._visible = false;
//和棋、认输、悔棋窗口
attachMovie("windows", "DrawDefeatRepent", 2000);
_root.DrawDefeatRepent._visible = false;
_root.DrawDefeatRepent._x = 150;
_root.DrawDefeatRepent._y = 150;
win_defeat.duplicateMovieClip("obj_win_defeat", 10000);
win_defeat.removeMovieClip();
//表示结果是否已经出来
result = false;
//表示当时在哪个台玩游戏，0表示没有玩
_root.createEmptyMovieClip("chessboard", 1000);
// 产生一个背景方格图
for (i=1; i<=7; i++) {
??? // 画模线
??? chessboard.lineStyle(1);
??? chessboard.moveTo(begin_x, begin_y+(i-1)*distance);
??? chessboard.lineTo(begin_x+7*distance, begin_y+(i-1)*distance);
}
for (j=1; j<=8; j++) {
??? // 画竖线
??? chessboard.moveTo(begin_x+(j-1)*distance, begin_y);
??? chessboard.lineTo(begin_x+(j-1)*distance, begin_y+6*distance);
}
for (i=0; i<=6; i++) {
??? // 画箭头按钮
??? name = "arrow_"+i;
??? attachMovie("arrow", name, i+j);
??? this[name]._x = begin_x+(i+0.5)*distance;
??? this[name]._y = begin_y-distance/2;
??? this[name].place = i;
}
//用5×7的二维数据来存放棋盘，0表示无棋，1表示我走的棋，2表示对手走的棋
chess = [[0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0]];
stop();
//上面代码完成了下棋前的初始化工作
2．清空棋盘函数
清空棋盘函数程序如下：
// 清空程序，在退出下棋时有用
function clear() {
??? var i;
??? // 清线段
??? removeMovieClip(chessboard);
??? for (i=0; i<=50; i++) {
???????????? // 清棋子
???????????? name = "chessman_"+i;
???????????? removeMovieClip(name);
??? }
??? for (i=0; i<=6; i++) {
???????????? // 清箭头
???????????? name = "arrow_"+i;
???????????? removeMovieClip(name);
??? }
}
3．走棋子程序
走棋子程序如下：
function runchess(place, name) {
??? var i = 5;
??? _root.i_run = not _root.i_run;
??? _root.obj_flash_point._visible = true;
??? if (name == "my") {
???????????? // 我走的棋就放我的棋子
???????????? while (_root.chess[i][place] != 0 and i>=0) {
????????????????????? i--;
???????????? }
???????????? if (i>=0) {
????????????????????? // 说明棋子下面有子可动
????????????????????? _root.chess[i][place] = 1;
????????????????????? _root.last_x = i;
????????????????????? _root.last_y = place;
????????????????????? name = "chessman_"+_root.chessman_number;
????????????????????? attachMovie("chessman", name, 100+_root.chessman_number);
????????????????????? _root.obj_flash_point._x = this[name]._x=begin_x+(place+0.5)*distance;
????????????????????? _root.obj_flash_point._y = this[name]._y=begin_y+(i+0.5)*distance;
????????????????????? this[name].gotoAndStop(_root.my_LOGO);
????????????????????? _root.chessman_number++;
????????????????????? // 检查是否胜利
????????????????????? if (check_win(i, place, 1)) {
??????????????? //如果你胜利就跳到你胜利的显示帧
??????????????????????????????? _root.obj_win_defeat.gotoAndPlay("you_win");
??????????????????????????????? _root.result = true;
??????????????????????????????? _root.replay = false;
??????????????????????????????? _root.i_can_play = false;
????????????????????? } else if (_root.chessman_number>=41) {
??????????????????????????????? // 说明已经无棋可走了，成和棋
??????????????????????????????? _root.obj_win_defeat.gotoAndPlay("you_draw");
??????????????????????????????? _root.result = true;
??????????????????????????????? _root.replay = false;
??????????????????????????????? _root.i_can_play = false;
????????????????????? }
???????????? }
??? }
??? if (name == "your") {
???????????? // 对方走的棋，就放对方的棋子
???????????? while (_root.chess[i][place] != 0 and i>=0) {
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