1.扫描整个棋盘，分别扫描四个方向是否有5个连子。网上找了很多五子棋源码都是用此算法，这意味着每下一个棋子都要扫描一遍19×19的棋盘，复杂而且低效，代码略。
2.每下一字，从该子开始扫描其四个方向（例如：从该子的（x-4，y）坐标开始扫描横向）是否存在5个连子。此算法较为常用，而且不涉及更为复杂的数据结构。
另外，为解决扫描越界的问题，在声明棋盘棋子位置时，可声明一个（4+19+4）×（4+19+4）的棋盘，而让棋子偏移（4，4）个坐标。
算法2源代码如下：
?123456789101112131415161718192021static void IfWin(int x,int y,int color){TCHAR win[20] int a,b if(stone[x][y]==1)wcscpy_s(win,_T("黑棋胜利！")) elsewcscpy_s(win,_T("白棋胜利！")) for(a=x-4a<=x+4a++)//判断横if(stone[a][y]==color&&stone[a+1][y]==color&&stone[a+2][y]==color&&stone[a+3][y]==color&&stone[a+4][y]==color){MessageBoxW(Xqwl.hWnd,win,TEXT(""),MB_OK)return}for(b=y-4b<=y+4b++)//判断竖if(stone[x][b]==color&&stone[x][b+1]==color&&stone[x][b+2]==color&&stone[x][b+3]==color&&stone[x][b+4]==color){MessageBoxW(Xqwl.hWnd,win,TEXT(""),MB_OK)return}for(a=x-4,b=y-4a<=x+4a++,b++)//判断右斜if(stone[a][b]==color&&stone[a+1][b+1]==color&&stone[a+2][b+2]==color&&stone[a+3][b+3]==color&&stone[a+4][b+4]==color){MessageBoxW(Xqwl.hWnd,win,TEXT(""),MB_OK)return}for(a=x-4,b=y+4a<=x+4a++,b--)//判断左斜if(stone[a][b]==color&&stone[a+1][b-1]==color&&stone[a+2][b-2]==color&&stone[a+3][b-3]==color&&stone[a+4][b-4]==color){MessageBoxW(Xqwl.hWnd,win,TEXT(""),MB_OK)return}}
#include<stdio.h>#include<stdlib.h>
#include<graphics.h>
#include<bios.h>
#include<conio.h>
#define LEFT 0x4b00
#define RIGHT 0x4d00
#define DOWN 0x5000
#define UP 0x4800
#define ESC 0x011b
#define SPACE 0x3920
#define BILI 20
#define JZ 4
#define JS 3
#define N 19
int box[N][N]
int step_x,step_y
int key
int flag=1
void draw_box()
void draw_cicle(int x,int y,int color)
void change()
void judgewho(int x,int y)
void judgekey()
int judgeresult(int x,int y)
void attentoin()
void attention()
{
char ch
window(1,1,80,25)
textbackground(LIGHTBLUE)
textcolor(YELLOW)
clrscr()
gotoxy(15,2)
printf("游戏操作规则：")
gotoxy(15,4)
printf("Play Rules:")
gotoxy(15,6)
printf("1、按左右上下方向键移动棋子")
gotoxy(15,8)
printf("1. Press Left,Right,Up,Down Key to move Piece")
gotoxy(15,10)
printf("2、按空格确定落棋子")
gotoxy(15,12)
printf("2. Press Space to place the Piece")
gotoxy(15,14)
printf("3、禁止在棋盘外按空格")
gotoxy(15,16)
printf("3. DO NOT press Space outside of the chessboard")
gotoxy(15,18)
printf("你是否接受上述的游戏规则（Y/N）")
gotoxy(15,20)
printf("Do you accept the above Playing Rules? [Y/N]:")
while(1)
{
gotoxy(60,20)
ch=getche()
if(ch=='Y'||ch=='y')
break
else if(ch=='N'||ch=='n')
{
window(1,1,80,25)
textbackground(BLACK)
textcolor(LIGHTGRAY)
clrscr()
exit(0)
}
gotoxy(51,12)
printf(" ")
}
}
void draw_box()
{
int x1,x2,y1,y2
setbkcolor(LIGHTBLUE)
setcolor(YELLOW)
gotoxy(7,2)
printf("Left, Right, Up, Down KEY to move, Space to put, ESC-quit.")
for(x1=1,y1=1,y2=18x1<=18x1++)
line((x1+JZ)*BILI,(y1+JS)*BILI,(x1+JZ)*BILI,(y2+JS)*BILI)
for(x1=1,y1=1,x2=18y1<=18y1++)
line((x1+JZ)*BILI,(y1+JS)*BILI,(x2+JZ)*BILI,(y1+JS)*BILI)
for(x1=1x1<=18x1++)
for(y1=1y1<=18y1++)
box[x1][y1]=0
}
void draw_circle(int x,int y,int color)
{
setcolor(color)
setlinestyle(SOLID_LINE,0,1)
x=(x+JZ)*BILI
y=(y+JS)*BILI
circle(x,y,8)
}
void judgekey()
{
int i
int j
switch(key)
{
case LEFT :
if(step_x-1<0)
break
else
{
for(i=step_x-1,j=step_yi>=1i--)
if(box[i][j]==0)
{
draw_circle(step_x,step_y,LIGHTBLUE)
break
}
if(i<1)break
step_x=i
judgewho(step_x,step_y)
break
}
case RIGHT :
if(step_x+1>18)
break
else
{
for(i=step_x+1,j=step_yi<=18i++)
if(box[i][j]==0)
{
draw_circle(step_x,step_y,LIGHTBLUE)
break
}
if(i>18)break
step_x=i
judgewho(step_x,step_y)
break
}
case DOWN :
if((step_y+1)>18)
break
else
{
for(i=step_x,j=step_y+1j<=18j++)
if(box[i][j]==0)
{
draw_circle(step_x,step_y,LIGHTBLUE)
break
}
if(j>18)break
step_y=j
judgewho(step_x,step_y)
break
}
case UP :
if((step_y-1)<0)
break
else
{
for(i=step_x,j=step_y-1j>=1j--)
if(box[i][j]==0)
{
draw_circle(step_x,step_y,LIGHTBLUE)
break
}
if(j<1)break
step_y=j
judgewho(step_x,step_y)
break
}
case ESC :
break
case SPACE :
if(step_x>=1&&step_x<=18&&step_y>=1&&step_y<=18)
{
if(box[step_x][step_y]==0)
{
box[step_x][step_y]=flag
if(judgeresult(step_x,step_y)==1)
{
sound(1000)
delay(1000)
nosound()
gotoxy(30,4)
if(flag==1)
{
setbkcolor(BLUE)
cleardevice()
setviewport(100,100,540,380,1)
/*定义一个图形窗口*/
setfillstyle(1,2)
/*绿色以实填充*/
setcolor(YELLOW)
rectangle(0,0,439,279)
floodfill(50,50,14)
setcolor(12)
settextstyle(1,0,5)
/*三重笔划字体, 水平放?5倍*/
outtextxy(20,20,"The White Win !")
setcolor(15)
settextstyle(3,0,5)
/*无衬笔划字体, 水平放大5倍*/
outtextxy(120,120,"The White Win !")
setcolor(14)
settextstyle(2,0,8)
getch()
closegraph()
exit(0)
}
if(flag==2)
{
setbkcolor(BLUE)
cleardevice()
setviewport(100,100,540,380,1)
/*定义一个图形窗口*/
setfillstyle(1,2)
/*绿色以实填充*/
setcolor(YELLOW)
rectangle(0,0,439,279)
floodfill(50,50,14)
setcolor(12)
settextstyle(1,0,8)
/*三重笔划字体, 水平放大8倍*/
outtextxy(20,20,"The Red Win !")
setcolor(15)
settextstyle(3,0,5)
/*无衬笔划字体, 水平放大5倍*/
outtextxy(120,120,"The Red Win !")
setcolor(14)
settextstyle(2,0,8)
getch()
closegraph()
exit(0)
}
}
change()
break
}
}
else
break
}
}
void change()
{
if(flag==1)
flag=2
else
flag=1
}
void judgewho(int x,int y)
{
if(flag==1)
draw_circle(x,y,15)
if(flag==2)
draw_circle(x,y,4)
}
int judgeresult(int x,int y)
{
int j,k,n1,n2
while(1)
{
n1=0
n2=0
/*水平向左数*/
for(j=x,k=yj>=1j--)
{
if(box[j][k]==flag)
n1++
else
break
}
/*水平向右数*/
for(j=x,k=yj<=18j++)
{
if(box[j][k]==flag)
n2++
else
break
}
if(n1+n2-1>=5)
{
return(1)
break
}
/*垂直向上数*/
n1=0
n2=0
for(j=x,k=yk>=1k--)
{
if(box[j][k]==flag)
n1++
else
break
}
/*垂直向下数*/
for(j=x,k=yk<=18k++)
{
if(box[j][k]==flag)
n2++
else
break
}
if(n1+n2-1>=5)
{
return(1)
break
}
/*向左上方数*/
n1=0
n2=0
for(j=x,k=yj>=1,k>=1j--,k--)
{
if(box[j][k]==flag)
n1++
else
break
}
/*向右下方数*/
for(j=x,k=yj<=18,k<=18j++,k++)
{
if(box[j][k]==flag)
n2++
else
break
}
if(n1+n2-1>=5)
{
return(1)
break
}
/*向右上方数*/
n1=0
n2=0
for(j=x,k=yj<=18,k>=1j++,k--)
{
if(box[j][k]==flag)
n1++
else
break
}
/*向左下方数*/
for(j=x,k=yj>=1,k<=18j--,k++)
{
if(box[j][k]==flag)
n2++
else
break
}
if(n1+n2-1>=5)
{
return(1)
break
}
return(0)
break
}
}
void main()
{
int gdriver=VGA,gmode=VGAHI
clrscr()
attention()
initgraph(&gdriver,&gmode,"c:\\tc")
/* setwritemode(XOR_PUT)*/
flag=1
draw_box()
do
{
step_x=0
step_y=0
/*draw_circle(step_x,step_y,8)*/
judgewho(step_x-1,step_y-1)
do
{
while(bioskey(1)==0)
key=bioskey(0)
judgekey()
}
while(key!=SPACE&&key!=ESC)
}
while(key!=ESC)
closegraph()
}
