C++ 2D array help (Topic)

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C++ 2D array help

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Mar 23 2008, 10:14 pm
By:

Falkoner

Pages: 1

Mar 23 2008, 10:14 pm

Falkoner Post #1

Okay, I have a working 2D array, that I can move around on using the aswd keys, but I can't make collision detection, here's the code that allows me to move around:

Code

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

int mx=5;
int my=4;
int i, j;
char direction;
char keypress;
char matrix[100][100];

void gotoxy(short x, short y)
{
HANDLE hConsoleOutput;
COORD Cursor_an_Pos = {x,y};
hConsoleOutput = GetStdHandle (STD_OUTPUT_HANDLE);
SetConsoleCursorPosition(hConsoleOutput, Cursor_an_Pos);
}

void loadgrid()
{
for(i=0; i<10; i++)
{
for(j=0; j<10; j++)
{
strcpy(matrix[0]," ---- ");
strcpy(matrix[1]," | | ");
strcpy(matrix[2]," | | ");
strcpy(matrix[3]," --- --- ");
strcpy(matrix[4],"| |");
strcpy(matrix[5],"| |");
strcpy(matrix[6]," --- --- ");
strcpy(matrix[7]," | | ");
strcpy(matrix[8]," | | ");
strcpy(matrix[9]," ---- ");

}
}
}

void printgrid()
{
for (int i=0; i<30; i++)
{
for ( int j=0; j<30; j++)
{
printf("%c", matrix[i][j]);
}
printf("\n");
}
}

int main()
{

system("COLOR 0B");
loadgrid();
printgrid();

gotoxy(mx,my);

printf("v");

while (mx>0 && my>0)
{
loadgrid();

if (kbhit())
{
keypress=getch();

if ((keypress == 'd') || (keypress == 'a') || (keypress == 'w') || (keypress == 's') || (keypress == 'S') || (keypress == 'D') || (keypress == 'A') || (keypress == 'W'))
{
direction = keypress;
if (direction == 's' || direction == 'S')
{
gotoxy(mx,my);
printf(" ");
my++;
gotoxy(mx,my);
printf("v");
}
if (direction == 'w' || direction == 'W')
{
gotoxy(mx,my);
printf(" ");
my--;
gotoxy(mx,my);
printf("^");
}
if (direction == 'a' || direction == 'A')
{
gotoxy(mx,my);
printf(" ");
mx--;
gotoxy(mx,my);
printf("<");
}
if (direction == 'd' || direction == 'D')
{
gotoxy(mx,my);
printf(" ");
mx++;
gotoxy(mx,my);
printf(">");
}

direction = ' ';
}
}
}

return 0;
}

Now, I tried to have something look ahead to the space they are walking to, but for some reason that is seeing invisible walls or something... Here's the code I tried:

Code

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

int mx=5;
int my=4;
int i, j;
char direction;
char keypress;
char matrix[100][100];

void gotoxy(short x, short y)
{
HANDLE hConsoleOutput;
COORD Cursor_an_Pos = {x,y};
hConsoleOutput = GetStdHandle (STD_OUTPUT_HANDLE);
SetConsoleCursorPosition(hConsoleOutput, Cursor_an_Pos);
}

void loadgrid()
{
for(i=0; i<10; i++)
{
for(j=0; j<10; j++)
{
strcpy(matrix[0]," ---- ");
strcpy(matrix[1]," | | ");
strcpy(matrix[2]," | | ");
strcpy(matrix[3]," --- --- ");
strcpy(matrix[4],"| |");
strcpy(matrix[5],"| |");
strcpy(matrix[6]," --- --- ");
strcpy(matrix[7]," | | ");
strcpy(matrix[8]," | | ");
strcpy(matrix[9]," ---- ");

}
}
}

void printgrid()
{
for (int i=0; i<30; i++)
{
for ( int j=0; j<30; j++)
{
printf("%c", matrix[i][j]);
}
printf("\n");
}
}

int main()
{

system("COLOR 0B");
loadgrid();
printgrid();

gotoxy(mx,my);

printf("v");

while (mx>0 && my>0)
{
loadgrid();

if (kbhit())
{
keypress=getch();
if ((keypress == 'd') || (keypress == 'a') || (keypress == 'w') || (keypress == 's') || (keypress == 'S') || (keypress == 'D') || (keypress == 'A') || (keypress == 'W'))
{
direction = keypress;
if (direction == 's' || direction == 'S')
{
if(matrix[mx][(my + 2)] == ' ')
{
gotoxy(mx,my);
printf(" ");
my++;
gotoxy(mx,my);
printf("v");
}
}
if (direction == 'w' || direction == 'W')
{
if(matrix[mx][(my - 2)] == ' ')
{
gotoxy(mx,my);
printf(" ");
my--;
gotoxy(mx,my);
printf("^");
}
}
if (direction == 'a' || direction == 'A')
{
if(matrix[(mx - 2)][my] == ' ')
{
gotoxy(mx,my);
printf(" ");
mx--;
gotoxy(mx,my);
printf("<");
}
}
if (direction == 'd' || direction == 'D')
{
if(matrix[(mx + 2)][my] == ' ')
{
gotoxy(mx,my);
printf(" ");
mx++;
gotoxy(mx,my);
printf(">");
}
}

direction = ' ';
}
}
}

return 0;
}

Help meh plz!

Post has been edited 1 time(s), last time on Mar 23 2008, 10:52 pm by Falkoner.

None.

Mar 23 2008, 10:39 pm

Doodle77 Post #2

what's the

Code

cout << endl << matrix[mx - 1][my];

about?

None.

Mar 23 2008, 10:52 pm

Falkoner Post #3

Oh, sorry, left my debugging code in there

None.

Mar 24 2008, 1:02 pm

Falkoner Post #4

Anyone? Is this really that difficult?

None.

Mar 24 2008, 10:23 pm

Falkoner Post #5

Nevermind, I figured it out, the x and y are switched, it's normal on the screen, but in the matrix it goes y x, not x y, so it all works now..

None.

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