I've been working on a program that is, in essence, a game. Basicly, you move the player (represented by 'P') through a 10x10 grid made up of dots ('.'). The objective of the game is to reach the treasure (represented by the letter 'T') without being killed by the monster (represented by the letter 'M') who moves throughout the board using a pseudo-random function. To move the player, use the (w, s, a, d) buttons and press Enter. Unfortunately I haven't found a way to move the 'P' without pressing Enter because I've been working on this program on Ubuntu and, for some reason, it wont let me use the getch() function.

Here is the code I have so far:

#include <iostream>
#include <cstdlib>
#define DIM 10
using namespace std;

char grid[DIM][DIM];
int dimen1=0, dimen2=0;
int Dimen1=3, Dimen2=8;

void Error() // An error message used when the player reaches the limits of the grid
{
system("clear");
cout << "ERROR!" << endl;
system("pause");
}

void botRun() // The game's "Monster" pseudo-randomly chooses a direction to move
{
int randnum;
randnum=rand()%4+1;

char *cptr=&grid[Dimen1][Dimen2];
const char xtrvrbl='M', xtrvrbl2='.';

switch(randnum)
{
case 1: // monster moves upwards
if(Dimen1==0)
{
break;
}

else
*cptr=xtrvrbl2;
--Dimen1;
cptr=&grid[Dimen1][Dimen2];
*cptr=xtrvrbl;
break;

case 2: // monster moves downwards
if(Dimen1==9)
{
break;
}

else
*cptr=xtrvrbl2;
++Dimen1;
cptr=&grid[Dimen1][Dimen2];
*cptr=xtrvrbl;
break;

case 3: // monster moves left
if(Dimen2==0)
{
break;
}

else
*cptr=xtrvrbl2;
--Dimen2;
cptr=&grid[Dimen1][Dimen2];
*cptr=xtrvrbl;
break;

case 4: // monster moves right
if(Dimen2==9)
{
break;
}

else
*cptr=xtrvrbl2;
++Dimen2;
cptr=&grid[Dimen1][Dimen2];
*cptr=xtrvrbl;
break;
}
}

void drawGrid()
{
char move;
char *cptr=&grid[dimen1][dimen2]; // This pointer points to the dimentions that the Player "P" is positioned.
const char xtrvrbl='P', xtrvrbl2='.'; // xtrvrbl=extravariable holds 'P' (Player).
int dimenDraw1=0, dimenDraw2=0; // These variables draw the grid.

system("clear");
while(dimenDraw1<=9 && dimenDraw2<=9) // This cycle draws the grid on the console.
{
if(dimenDraw2==9)
{
cout << grid[dimenDraw1][dimenDraw2];
cout << endl;
dimenDraw2=0;
++dimenDraw1;
}

else
{
cout << grid[dimenDraw1][dimenDraw2];
++dimenDraw2;
}
}

cout << endl << "Type Here!:";
cin >> move; // The player chooses the direction of the 'P' using the -W- -S- -A- -D-

switch(move)
{
case 'w': // player moves upwards
if(dimen1==0)
{
Error();
break;
}

else
*cptr=xtrvrbl2;
--dimen1;
cptr=&grid[dimen1][dimen2];
*cptr=xtrvrbl;
break;

case 's': // player moves downwards
if(dimen1==9)
{
Error();
break;
}

else
*cptr=xtrvrbl2;
++dimen1;
cptr=&grid[dimen1][dimen2];
*cptr=xtrvrbl;
break;

case 'a': // player moves left
if(dimen2==0)
{
Error();
break;
}

else
*cptr=xtrvrbl2;
--dimen2;
cptr=&grid[dimen1][dimen2];
*cptr=xtrvrbl;
break;

case 'd': // player moves right
if(dimen2==9)
{
Error();
break;
}

else
*cptr=xtrvrbl2;
++dimen2;
cptr=&grid[dimen1][dimen2];
*cptr=xtrvrbl;
break;
}

botRun();
drawGrid();
}

void InicGrid()
{
int dimen1=0, dimen2=0, n=0;

while(dimen1<=9 && dimen2<=9)
{
if(dimen2==9)
{
grid[dimen1][dimen2]='.';
dimen2=0;
++dimen1;
}

else
{
grid[dimen1][dimen2]='.';
++dimen2;
}
}

grid[0][0]='P';
grid[3][8]='M';
grid[9][9]='T';
drawGrid();
}

int main()
{
InicGrid();
}


What's Done:
- Player can move the letter 'P' around the grid
- The Monster ('M') can move around the board using the rand() function
- Both the Player and Monster can't move outside the 10x10 grid

What's not done:
- Any form of interaction between the Player and the Monster and the Player and the Treasure
- (Can't think of anything else at the moment)

Bugs:
- When 'P' passes nearby 'M' it sometimes dissapears, but it will show up again when it moves



So what do you think of the program.