Thread: Help With using classes for games.

This is my first attempt at using classes for a program, it is sort of like a "learn how to use class's in c++ test" program for me. Of all the tutorials I have read about them, I couldn't find anything useful to use them with except maybe games (which I don't know how program).

Could anyone share with me some tips about what to change about implementation of them and how I can use them better in the future? (note: this program was only a test of how to use classes not meant to be that great or anything). Thanks in advance for your help.

Code:

#include <iostream>
#include <string>

using namespace std;

char map[50][30] = { 0 };

char message[30];
bool done = false;

class Charactor
{
public:
    Charactor();
    ~Charactor();
    
    void moveup();
    void movedown();
    void moveleft();
    void moveright();
    
    int xpos;
    int ypos;
    
    int height;
    int width;
    
    int health;
    int speed;

} player;

Charactor::Charactor()
{
xpos = 5;
ypos = 15;

height = 1;
width  = 2;

health = 100;
speed = 1;
}

Charactor::~Charactor()
{
}

void Charactor::moveup()
{
ypos -= speed;
}
void Charactor::movedown()
{
ypos += speed;
}
void Charactor::moveleft()
{
xpos -= speed;
}
void Charactor::moveright()
{
xpos += speed;
}

class Barrier
{
public:
    Barrier();
    ~Barrier();
    
    int x1,x2,y1,y2;
} room;

Barrier::Barrier()
{
x1 = 0;
x2 = 50;
y1 = 0;
y2 = 20;
}

Barrier::~Barrier()
{
}

void checkbarrier()
{
if (player.ypos + player.height == room.y2)
    {
    strcpy(message, "You cannot go through walls!");
    player.ypos -= 1;
    }
else if (player.ypos - player.height == room.y1)
    {
    strcpy(message, "You cannot go through walls!");
    player.ypos += 1;
    }
else if (player.xpos + player.width == room.x2)
    {
    strcpy(message, "You cannot go through walls!");
    player.xpos -= 1;
    }
else if (player.xpos - player.width == room.x1)
    {
    strcpy(message, "You cannot go through walls!");
    player.xpos += 1;
    }
else
    strcpy(message, "You are doing fine!         ");
}

void drawmap()
{
for (int x = 1; x < 49; x++)
    for (int y = 1; y < 19; y++)
        {
        map[x][y] = ' ';
        }
        
for (int x = 0; x < 50; x++)
    {
    map[x][0] = '-';
    map[x][49] = '-';
    }
for (int y = 0; y < 20; y++)
    {
    map[0][y] = '|';
    map[49][y] = '|';
    }
map[player.xpos][player.ypos] = '|';
map[player.xpos][player.ypos - 1] = 'O';
map[player.xpos + 1][player.ypos] = '-';
map[player.xpos - 1][player.ypos] = '-';
map[player.xpos + 1][player.ypos + 1] = '\\';
map[player.xpos - 1][player.ypos + 1] = '/';
}
 
void displaymap()
{

for (int y = 0; y < 20; y++)
    {
    for (int x = 0; x < 50; x++)
        {
        cout << map[x][y];
        }
        cout <<endl;
    }     
}

void drawscreen()
{
char command;

cout <<"--------------------------------------------------"<<endl;
cout <<"|Commands: W - Up, S - Down, A - Left, D - Right  |"<<endl;    
cout <<"|           Q - Quit  Press Enter To confirm.     |"<<endl;
cout <<"|Health:"<<player.health<<"  Message: "<< message <<"|"<<endl;
cout <<"---------------------------------------------------"<<endl;
displaymap();
cout <<"Command: ";
cin >> command;

if (command == 'w')
    player.moveup();
else if (command == 's')
    player.movedown();
else if (command == 'a')
    player.moveleft();
else if (command == 'd')
    player.moveright();
else if (command == 'q')
   done = true;

system("cls");
}

int main()
{
while (!done)
    {
    drawmap();
    drawscreen();
    checkbarrier();
    }
return 0;
}