AT89S51单片机实现的俄罗斯方块程序

#include <reg51.h>  
#define uchar unsigned char  
 #define uint  unsigned int  
#define DOWNTIME 30  
#define MAXHANG 20 
 #define MAXLIE  16  
#define MAXPIX  3  
#define PUSHON  50   
#define LCD P2  
#define EN  P3^0  
#define RW  P3^1  
#define RS  P3^2 
 #define CS1 P3^3 
 #define CS2 P3^4   
#define KEYLEFT P3^5  
#define KEYDOWN P3^6  
#define KEYRIGH P3^7 
 #define KEYROTATION P1^0   
uchar gkey=0xff,keystate=0,t0ms1=0,t0ms=0,downtimegap=0;  uchar miao=0,fen=0;  
uchar downok;  
bit keyflag,timeupdate,fashionupdate;  uchar idata cubeMap[MAXHANG][2];  
typedef struct{  
               uchar code * box;       
uchar cube : 4;     
uchar state : 4;     
char row;     
char column;     
} block;  
block this;  
uint score=0;  

uchar speed=1;  
uchar code bittable[8]={1,2,4,8,0x10,0x20,0x40,0x80}; 
uchar code cube[]=  {  
0,4,0xe,0,  0,2,6,2,     0,7,2,0,     4,6,4,0,   /*¡ö    ¡ö¡ö¡ö   */  
0,8,0xe,0,  0,4,4,0xc,   0,0,0xe,2,   0,6,4,4,  /*¡ö¡ö¡ö    ¡ö      */  
0,0xe,8,0,  0,4,4,6,     0,1,7,0,     6,2,2,0,  /*¡ö¡ö      ¡ö¡ö  */  
0,0xc,6,0,  0,2,6,4,     0,6,3,0,     2,6,4,0,  /*  ¡ö¡ö    ¡ö¡ö    */  
0,6,0xc,0,  0,4,6,2,     0,3,6,0,     4,6,2,0,  /*¡ö¡ö¡ö¡ö   */  
0,0xf,0,0,  4,4,4,4,     0,0,0xf,0,   2,2,2,2,  /*¡ö¡ö    ¡ö¡ö   
*/  
0,6,6,0,    0,6,6,0,     0,6,6,0,     0,6,6,0  
};   
uchar code asii[]=  {  
  0x3E,0x51,0x49,0x45,0x3E, // -0-     
 0x00,0x42,0x7F,0x40,0x00, // -1-      
0x62,0x51,0x49,0x49,0x46, // -2-     
 0x21,0x41,0x49,0x4D,0x33, // -3-     
 0x18,0x14,0x12,0x7F,0x10, // -4-     
 0x27,0x45,0x45,0x45,0x39, // -5-     
 0x3C,0x4A,0x49,0x49,0x31, // -6-     
 0x01,0x71,0x09,0x05,0x03, // -7-      
0x36,0x49,0x49,0x49,0x36, // -8-     
 0x46,0x49,0x49,0x29,0x1E, // -9-      
0x00,0x36,0x36,0x00,0x00, // -:-10  //next  
    0x7F,0x04,0x08,0x10,0x7F, // -N-11      
0x7F,0x49,0x49,0x49,0x41, // -E-12     
 0x63,0x14,0x08,0x14,0x63, // -X-13     
 0x01,0x01,0x7F,0x01,0x01, // -T-14  //speed  
    0x26,0x49,0x49,0x49,0x32, // -S-15      
0x7F,0x09,0x09,0x09,0x06, // -P-16