/// /////////////////////////////////////////////////////////////////////////////////////////
public piece placeapiece(int x, int y, piecetype type)
{
//find cloest 2 points
Point nodeid = Findnode(x, y);
//if not return false
if (nodeid == no_match)
{
return(null);
}
//if have check piece placed
if (pieces[nodeid.X, nodeid.Y] != null)
{
return(null);
}
//make a piece by type
Point formpos = convert(nodeid);
if (type == piecetype.BLACK)
{
pieces[nodeid.X, nodeid.Y] = new black(formpos.X, formpos.Y);
}
else if (type == piecetype.WHITE)
{
pieces[nodeid.X, nodeid.Y] = new white(formpos.X, formpos.Y);
}
//final postion placed peice
lastone = nodeid;
return(pieces[nodeid.X, nodeid.Y]);
}
//////////////////////////////////////////////////////////////////////////////////////////////
private void checkwin()
{
int centerX = board.lastplace.X;
int centerY = board.lastplace.Y;
for (int xdir = -1; xdir <= 1; xdir++)
{
for (int ydir = -1; ydir <= 1; ydir++)
{
int count2 = 1;
while (count2 < 5)
{
int targetx = centerX - count2 * xdir;
int targety = centerY - count2 * ydir;
if (targetx < 0 || targetx >= board.count ||
targety < 0 || targety >= board.count ||
board.gettype(targetx, targety) != current)
{
break;
}
count2++;
// without center x+0,y+0 if x+0 and y+0 skip
if (xdir == 0 && ydir == 0)
{
continue;
}
int count = 1;
///////////store how many pieces right now
while (count < 5)
{
int x = count * xdir;
int y = count * ydir;
targetx = centerX + x;
targety = centerY + y;
// check is color the same
if (targetx < 0 || targetx >= board.count ||
targety < 0 || targety >= board.count ||
board.gettype(targetx, targety) != current)
{
break;
}
count++;
}
//check
if (count == 5)
{
winner = current;
}
if (count + count2 > 5)
{
winner = current;
reset = current;
}
}
}
}
}
/////////////////////////////////////////////////////////////////////////////////
public piece placeapiece(int x, int y)
{
piece piece = board.placeapiece(x, y, current);
if (piece != null)
{
//check have winner rightnow?
checkwin();
//switch player
if (current == piecetype.BLACK)
{
current = piecetype.WHITE;
}
else if (current == piecetype.WHITE)
{
current = piecetype.BLACK;
}
return(piece);
}
return(null);
}
