move function in maze does not work correctly

hasani2007

Hello It's a maze program,but is not completed. I want to define move function to move the ** (worm). when I ask the value of arrow_keys() it has no response(see move function) in other word move function doesn't work(it is not completed).

#include <stdio.h>
#include <conio.h>

/* prototypes */
create_wall();
arrow_keys();
move();
/* end of prototypes */

void main()
{
create_wall();
arrow_keys();
move();
}

/* function to create the walls */
create_wall(){
clrscr();
int i,j;
char wall[15][26]={
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{1,0,0,0,1,1,1,0,1,1,1,1,1,1,0,0,0,0,0,0,0,1,1,1,1,1},
{1,1,0,1,0,0,0,0,0,1,1,1,0,0,0,0,0,1,1,1,1,1,1,1,0,1},
{1,1,0,1,0,0,0,0,0,1,1,1,0,0,0,0,0,1,1,1,1,1,1,1,0,1},
{1,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,1,0,0,0,0,0,0,1,1},
{1,1,0,1,0,0,0,0,0,1,1,1,0,0,0,0,0,1,1,1,1,0,1,1,0,1},
{1,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,1,0,0,0,0,0,0,1,1},
{1,1,1,1,1,0,0,0,1,1,1,0,0,0,0,1,1,1,1,0,0,0,1,1,0,1},
{1,0,1,0,0,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,1,1},
{1,1,1,1,1,1,1,1,0,1,0,0,0,1,1,0,0,0,0,0,0,0,0,0,1,1},
{1,1,0,1,0,0,0,0,0,0,1,1,1,0,0,0,0,0,1,1,1,1,1,1,0,1},
{1,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,1,0,0,0,0,0,0,1,1},
{1,1,1,1,1,0,0,0,1,1,1,0,0,0,0,1,1,1,1,0,0,0,1,1,0,1},
{1,0,1,0,0,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
};
for(i=0;i<15;i++){
for(j=0;j<26;j++){
if (wall[i][j]==1) printf("²");
else printf(" ");
}
printf("\n");
}
gotoxy(2,2);
printf("*");
gotoxy(3,2);
printf("*");

}

/* end of create_wall function */
////////////////////////////////////
/* function to define arrow keys */
int arrow_keys()
{
int ch;
while(1)
{
ch=getch();
if(ch==0)
{
ch=getch();
if(ch==72) return 72;
if(ch==75) return 75;
if(ch==77) return 77;
if(ch==80) return 80;
}
else break;
}
}

/* function for move */
// up=72 , down=80 , left=75 , right=77
move(){

if (arrow_keys()==75)
{
clrscr();
printf("bvccvbncvnvbnvb");
}
}

Nilesh Hamane

Only by reading the input keys, **(worm) will not move, for that you need to add some code here

if (arrow_keys()==75)
{
// worm moving logic will be here
}

Don't die, until you do. http://nnhamane.googlepages.com

chandu004

if i understood it correctly, your problem is that, you are unable to scan the keys Right??. i dont think getch will do for you here in this context. there is some other mechanism to get the key code here. let me refer my backups and let you know. parallelly, you can also try it.

-------------------------------------------- Suggestion to the members: Please prefix your main thread subject with [SOLVED] if it is solved. thanks. chandu.

David Crow

hasani2007 wrote:

when I ask the value of arrow_keys() it has no response...

Possibly because not every logic path has a return value. If the first getch() returns a non-zero value, the while() loop breaks and arrow_keys() will return what?

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Man who follows car will be exhausted." - Confucius

Software_Developer

Hello hasani2007. Nice work on the maze.

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>

#define UP 72
#define DOWN 80
#define LEFT 75
#define RIGHT 77
#define SPACE 32
#define ENTER 13
#define ESCAPE 27

/******************/
/* */
/******************/

typedef struct t_worm
{ int x,y,dirx,diry; } ;

t_worm worm;
int ch;
int i,j;
char wall[15][26]={
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{1,0,0,0,1,1,1,0,1,1,1,1,1,1,0,0,0,0,0,0,0,1,1,1,1,1},
{1,1,0,1,0,0,0,0,0,1,1,1,0,0,0,0,0,1,1,1,1,1,1,1,0,1},
{1,1,0,1,0,0,0,0,0,1,1,1,0,0,0,0,0,1,1,1,1,1,1,1,0,1},
{1,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,1,0,0,0,0,0,0,1,1},
{1,1,0,1,0,0,0,0,0,1,1,1,0,0,0,0,0,1,1,1,1,0,1,1,0,1},
{1,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,1,0,0,0,0,0,0,1,1},
{1,1,1,1,1,0,0,0,1,1,1,0,0,0,0,1,1,1,1,0,0,0,1,1,0,1},
{1,0,1,0,0,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,1,1},
{1,1,1,1,1,1,1,1,0,1,0,0,0,1,1,0,0,0,0,0,0,0,0,0,1,1},
{1,1,0,1,0,0,0,0,0,0,1,1,1,0,0,0,0,0,1,1,1,1,1,1,0,1},
{1,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0,1,0,0,0,0,0,0,1,1},
{1,1,1,1,1,0,0,0,1,1,1,0,0,0,0,1,1,1,1,0,0,0,1,1,0,1},
{1,0,1,0,0,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
};

/******************/
/* */
/******************/

/* prototypes */
void create_wall();
void arrow_keys();
void move();
void clrscr();
void gotoxy(int x, int y);
/* end of prototypes */

/******************/
/* */
/******************/

void main()
{
create_wall();

while(ch!=ESCAPE)
{
arrow_keys();
move();
}

gotoxy(1,21);printf("\\n");

}

/* function to create the walls */

/******************/
/* function for */
/******************/

void create_wall(){
clrscr();

for(i=0;i<15;i++){
for(j=0;j<26;j++){
if (wall[i][j]==1) printf("²");
else printf(" ");
}
printf("\n");
}
gotoxy(2,2);
printf("*");
gotoxy(3,2);
printf("*");

}

/* end of create_wall function */
////////////////////////////////////
/* function to define arrow keys */

/******************/
/* function for */
/******************/

void arrow_keys()
{

if (kbhit())
{
   ch=getch();
   switch (ch)
   {
       /////////////////////
       case UP:
              worm.y--;
	   break;
       /////////