|
|
楼主 |
发表于 2011-12-20 15:05:52
|
显示全部楼层
#include <reg51.h>
#include <intrins.h>
#include "key.h"
#define uchar unsigned char
#define uint unsigned int
#define SNAKE 20 //最大长度
#define PINGMUCHANGDU 16 //屏幕长最大长度
#define PINGMUKUANDU 16 //屏幕宽最大长度
#define BLKN 2 //列锁存器数
#define ABCD138 P2
sbit SDATA_595=P3^0; //串行数据输入
sbit SCLK_595 =P3^1; //移位时钟脉冲
sbit RCK_595 =P3^2; //输出锁存器控制脉冲
sbit G_74138 =P3^4; //显示允许控制信号端口
uchar xshu[SNAKE],yshu[SNAKE];
uint speed=200;
uchar temp,pianyi;
uchar changdu;
uchar i,k,j;
uchar suijix,suijiy;
uchar data dispram[32]={0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF}; //显示缓存
void delay(uint);
void yanshi(uint);
/*******************************************************
* *
* 显示函数 *
* *
*******************************************************/
void play(uchar xi,uchar yi)
{
uchar pianyi1;
if(xi>7)
{
pianyi1=0x01<<(15-xi);
pianyi=~pianyi1;
dispram[2*yi+1]&=pianyi;
}
if(xi<8)
{
pianyi1=0x01<<(7-xi);
pianyi=~pianyi1;
dispram[2*yi]&=pianyi;
}
}
/*******************************************************
* *
* 熄灭函数 *
* *
*******************************************************/
void mie(uchar xi,uchar yi)
{
uchar pianyi1;
if(xi>7)
{
pianyi1=0x01<<(15-xi);
dispram[2*yi+1]|=pianyi1;
}
if(xi<8)
{
pianyi1=0x01<<(7-xi);
dispram[2*yi]|=pianyi1;
}
}
/*******************************************************
* *
* 控制方向函数 开始暂停 *
* *
*******************************************************/
uchar fangxiangkongzhi(void)
{
if(direction==0x01)//上
{
if(((xshu[changdu-1]+0)!=xshu[changdu-2])&&((yshu[changdu-1]-1)!=yshu[changdu-2]))
{
xfangxiang=0;
yfangxiang=-1;
direction=0;
return 1;
}
}
if(direction==0x02)//下
{
if(((xshu[changdu-1]+0)!=xshu[changdu-2])&&((yshu[changdu-1]+1)!=yshu[changdu-2]))
{
yfangxiang=1;
xfangxiang=0;
direction=0;
return 1;
} }
if(direction==0x03)//左
{
if(((xshu[changdu-1]+1)!=xshu[changdu-2])&&((yshu[changdu-1]+0)!=yshu[changdu-2]))
{
xfangxiang=1;
yfangxiang=0;
direction=0;
return 1;
}}
if(direction==0x04)//右
{
if(((xshu[changdu-1]-1)!=xshu[changdu-2])&&((yshu[changdu-1]+0)!=yshu[changdu-2]))
{
xfangxiang=-1;
yfangxiang=0;
direction=0;
return 1;
}
}
if(direction==0x05)//暂停
{
yanshi (100);
direction=0;
while(direction!=0x05)keydown();
direction=0;
}
else
return 0;
}
/*******************************************************
* *
* 前进函数 *
* *
*******************************************************/
void qianjin(void)
{
fangxiangkongzhi();
//fangxiangkongzhi();
mie(xshu[0],yshu[0]);
for(k=0;k<changdu-1;k++)
{
xshu[k]=xshu[k+1];
yshu[k]=yshu[k+1];
}
xshu[changdu-1]=xshu[changdu-2]+xfangxiang;
yshu[changdu-1]=yshu[changdu-2]+yfangxiang;
for(j=0;j<changdu;j++)
{
play(xshu[j],yshu[j]);
}
}
/*******************************************************
* *
* 判断死亡函数 *
* *
*******************************************************/
uchar ifdie()
{
for(i=0;i<changdu-1;i++)
if((xshu==xshu[changdu-1])&&(yshu==yshu[changdu-1]))
{return 0;} //判断是否撞到自己
if((xshu[changdu-1]>(PINGMUCHANGDU-1))||xshu[changdu-1]<0)
return 0;
if((yshu[changdu-1]>(PINGMUKUANDU-1))||yshu[changdu-1]<0)
return 0; //判断是否撞到边界
else
return 1;
}
/*******************************************************
* *
* 随机数生成函数 *
* *
*******************************************************/
void chanshengsuijishu()
{
suijix=TL0;
suijiy=TL0;
suijix=suijix%PINGMUKUANDU;
suijiy=suijiy%31%16;
for(i=1;i<changdu;i++)
if((xshu[i-1]==suijix)&&(yshu[i-1]==suijiy))
{
suijix=suijix%PINGMUKUANDU;
suijiy=suijiy%31%16;
i=0;
}
play(suijix,suijiy);
}
//程序结束 |
|
发表于 2011-12-20 15:04:38
