迷宫探路II

    对《迷宫探路》做了一点改进。小人在行走过程中不走回头路,

即不重复经过同一点。                     

/* crazymaze.c*/
/* 2003-8-26 */
#include <stdlib.h>
#include <time.h>
#include <math.h>
#include <stdio.h>
#include <graphics.h>
#define N 22
#define M 22
#define MAXLEN 200;
int bg[M][N];
struct square{
    int x;
    int y;
    int direc;
}p[200];
void makebg(int,int);
void drawbg(int[][],int,int,int,int,int);
void drawman(int,int,int);
void rect(int,int,int,int);

void main(){/* main()开始 */
int step=20;
int len=10;
int size=20;
int x=0,y=0,x0=0,y0=0;
int i=0,j=0,k=0,count=0;
int gdriver=DETECT,gmode;
char ch;
int direc;
makebg(M,N);
/*  registerbgidriver(EGAVGA_driver);
 initgraph(&gdriver,&gmode,"c:\turboc2");*/
initgraph(&gdriver,&gmode,"c:\tc20\bgi");
cleardevice();
setwritemode(XOR_PUT);
settextstyle(1,0,3);
setcolor(GREEN);
outtextxy(100,180,"Press <Q> to quit");
setcolor(BLUE);
setfillstyle(LINE_FILL,BLUE);

drawbg(bg,M,N,size,0,0);
setcolor(GREEN);
outtextxy(60,120,"PRESS KEY <1> :YOU ,");
outtextxy(70,150,"OTHER KEY :AUTOMATIC");
setcolor(WHITE);
x =len;y =len;
drawman(x,y,len);
x0=x;y0=y;
if((ch=getch())=='1'){
/* 人工控制 */
while((ch=getch())!='q'){
  delay(800);
  drawman(x,y,len);
  switch(ch){
    case 'a':
        if(j>0&&bg[i][j-1]==0){
            if(x>step){x-=step;j--;};
        }
        break;
    case 's':
        if(i<M-1&&bg[i 1][j]==0){
            if(y<479-step){y =step;i ;};
        }
        break;
   

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