What is the error in this code? - c++

Question

I have created a code in C++ that is supposed to display an O and an X, and you can move the O with w/a/s/d, and the X moves randomly. It compiles fine, but when I run it, there is an O, but no X. I put the source code here:
#include <iostream>
using namespace std;
//program class: defines player, enemies and powerups
#include<stdlib.h>
#include<time.h>
class prgm
{
friend void set_pos(prgm*const nprgm,int px,int py){nprgm->x=px;nprgm->y=py;}
friend void set_pos(prgm*const nprgm,int px,int py,int php){nprgm->x=px;nprgm->y=py;nprgm->hp=php;}
friend void set_pos(prgm*const nprgm,int px,int py,int php,char psym){nprgm->x=px;nprgm->y=py;nprgm->hp=php;nprgm->sym=psym;}
protected:
int x; //x-position
int y; //y-position
int hp; //health
char sym; //single-character representation
public:
prgm(){sym=' ';}
prgm(int px,int py,int php,char psym):x(px),y(py),hp(php),sym(psym){};
const int xpos(){return x;}
const int ypos(){return y;}
const char rsym(){return sym;}
void up(int n){y-=n;} //move program up
void left(int n){x-=n;} //move program left
void down(int n){y+=n;} //move program down
void right(int n){x+=n;} //move program right
void mutate(char nsym){sym=nsym;} //change program's symbol
void harm(int dam){hp-=dam;}
void heal(int dam){hp+=dam;}
prgm &prgm::operator=(const prgm&nprgm){x=nprgm.x;y=nprgm.y;hp=nprgm.hp;sym=nprgm.sym;}
};
//null program
prgm null();
//abstract enemy class for individual ai of each enemy
class enemy:public prgm
{
public:
void move(){}; //what enemy will do during its move
};
prgm player(0,0,0,'O');
void pmove()
{
char move;
cin>>move;
switch(move)
{
case 'w':
player.up(1);
break;
case 'a':
player.left(1);
break;
case 's':
player.down(1);
break;
case 'd':
player.right(1);
break;
case 'q':
exit(0);
break;
}
return;
}
//the X1 Virus Component, the simplest version of Virus X: moves in random directions, harms on contact.
class X1:public enemy
{
static const char sym='X';
public:
X1(){}
X1(int px,int py){x=px;y=py;}
void move();
};
void X1::move()
{
srand(time(0));
int dir=(rand()%2);
int dis=(rand()%3)-1;
while(dis=0)
{
dis=(rand()%3)-1;
}
if(dir=0)
{
y+=dis;
}
if(dir=1)
{
x+=dis;
}
return;
}
//sector 1
const int maxx=10; //length of sector
const int maxy=10; //height of sector
char sector[maxx][maxy]; //sector declaration
const int rsize=4;
prgm reactive_items[rsize];//array of powerups
X1 a(4,4); //enemy(ies)
const int vsize=1;
X1 viruses[vsize]={a}; //array of enemies
int px=0,py=0,php=1; //players position and hp
//function zeros-out the sector
void clear_sect()
{
for(int i=0;i<maxy;i++)
{
for(int j=0;j<maxx;j++)
{
sector[j][i]=' ';
}
}
}
//function sets all the enemies/powerups/player in the sector
void set_sect()
{
for(int i=0;i<rsize;i++)
{
int*tx=new int(reactive_items[i].xpos());
int*ty=new int(reactive_items[i].ypos());
char*ts=new char(reactive_items[i].rsym());
sector[*tx][*ty]=*ts;
delete tx;
delete ty;
delete ts;
}
for(int j=0;j<vsize;j++)
{
int*tx=new int(viruses[j].xpos());
int*ty=new int(viruses[j].ypos());
char*ts=new char(viruses[j].rsym());
sector[*tx][*ty]=*ts;
delete tx;
delete ty;
delete ts;
}
int*tx=new int(player.xpos());
int*ty=new int(player.ypos());
char*ts=new char(player.rsym());
sector[*tx][*ty]=*ts;
delete tx;
delete ty;
delete ts;
}
//function displays sector
void display_sect()
{
for(int i=0;i<maxy;i++)
{
for(int j=0;j<maxx;j++)
{
cout<<sector[j][i];
}
cout<<endl;
}
return;
}
void vmove()
{
for(int i=0;i<vsize;i++)
{
viruses[i].move();
}
return;
}
int main()
{
//load the sector # from the .txt, load the sector
set_pos(&player,px,py,php); //set the players x and y values
while(true){//while the player is on this sector
clear_sect();//clear the sector map
set_sect();//use the set function
display_sect();//use the display function
pmove();//players move
vmove();//enemy-ai move
//check board; relocate whats needed, initiate powerups, etc.
}//end of while
//when player wins sector
//write current sector to a .txt
//load program: restart this/story program/APHQ
return 0;
}
I know its long and pretty convoluted, (they were originally seperate .h files, but i put them together so that I could see all the code at once) but I really need an answer. Thanks

Answer 1

Your default constructor to prgm() sets the sym member to ' '. The static const char field does not override the base sym member, so the character used is probably the ' '.
Your enemy constructor should actually call the (int,int,int,char) base constructor to set the sym member.

Answer 2

Check your X1 class. It declares a static const char sym while it inherits a protected char sym member variable from class pgrm. Your display_sect function uses prgm's rsym() method, which returns the member variable, not the static member.