public Chess PlaceAchess(int x, int y, chessType type)
{
Point nodeID = FindthecloestNode(x, y); //找出最近的節點
if (nodeID == NOmatchNode) //如果沒有的話，回傳null
{
return(null);
}
//如果有的話，檢查棋子是不是已經存在了
if (chess[nodeID.X, nodeID.Y] != null)
{
return(null);
}
//根據 Type 產生對應的棋子
Point formpos = adjustNodePosition(nodeID);//為了讓棋子剛好在座標點上
if (type == chessType.BLACK)
{
chess[nodeID.X, nodeID.Y] = new Black(formpos.X, formpos.Y);
}
else if (type == chessType.WHITE)
{
chess[nodeID.X, nodeID.Y] = new White(formpos.X, formpos.Y);
}
lastchess = nodeID;//紀錄最後下棋子的位置
return(chess[nodeID.X, nodeID.Y]);
}
public void Whowin()
{
int centerX = borad.Lastchess.X;
int centerY = borad.Lastchess.Y;
// |(x-1,y-1)|(x,y-1)|(x+1,y-1)|
// |---------|-------|---------|
//檢查八個不同方向 | (x-1,y) | (x,y) | (x+1,y) |
// |---------|-------|---------|
// |(x-1,y+1)|(x,y+1)|(x+1,y+1)|
for (int xdir = -1; xdir <= 1; xdir++)
{
for (int ydir = -1; ydir <= 1; ydir++)
{
if (xdir == 0 && ydir == 0)
{
//如果有符合條件的話，會跳過下面所有的條件，直接開始下一輪迴圈
continue;
}
int count = 1;//紀錄現在有幾顆棋子
while (count < 5)
{
int targetX = centerX + count * xdir;
int targetY = centerY + count * ydir;
//檢查是不是有超出邊界和檢查顏色是不是一樣
if (targetX < 0 || targetX >= Borad.Nodecount ||
targetY < 0 || targetY >= Borad.Nodecount ||
borad.GetchessType(targetX, targetY) != currentplayer)
{
break;
}
count++;
}
if (count == 5)//檢查是不是有五顆棋子
{
winner = currentplayer;
}
}
}
}
public Chess PlaceAchess(int x, int y)
{
Chess chess = borad.PlaceAchess(x, y, currentplayer);
if (chess != null)
{
Whowin();//檢查現在下棋的人是不是獲勝
//交換下棋部分
if (currentplayer == chessType.BLACK)//如果棋子是黑色的話，下一次按就變成白色的
{
currentplayer = chessType.WHITE;
}
else if (currentplayer == chessType.WHITE)//如果棋子是白色的話，下一次按就變成黑色的
{
currentplayer = chessType.BLACK;
}
return(chess);//傳回棋子
}
return(null);
}