My first C++ Object game

[Yeyinde]

This is my first little game in C++ using objects.

If you want to download the working exe, click here.

If you want to compile it yourself, the code is here.

Spoiler: Code for those who don't want to download the cpp file

/*
 Simple Bet-up-the-enemy Game
 Yeyinde
 12/11/06
*/
#include <iostream>
#include <stdlib.h>
#include <ctime>
using namespace std;
/*
 Battler Class
 Superclass for Player and Enemy
*/
class Battler
{
public:
    int hp, maxhp, strength, defence;
    bool defending;
    Battler()
    {
        defending = false;
    }
    void attack_effect(Battler attacker)
    {
        int damage = (rand() % attacker.strength * 2) + 1;
        damage /= (defence / 2);
        if (defending)
            damage /= 2;
        hp -= damage;
        cout << damage << " damage taken!\n";
        if (hp < 0)
            hp = 0;
        cout << "HP: " << hp << "/" << maxhp << endl;
    }
};
/*
 Player Class
*/
class Player : public Battler
{
public:
    int level, exp, next_exp;
    Player()
    {
        level = 1;
        hp = (rand() % 11) + 30;
        maxhp = hp;
        exp = 0;
        next_exp = 15;
        strength = (rand() % 6) + 5;
        defence = (rand() % 3) + 5;
    }
    void print_status()
    {
        cout << "Your status:\n";
        cout << "LV: " << level << endl;
        cout << "HP: " << hp << "/" << maxhp << endl;
        cout << "EXP: " << exp << "/" << next_exp << endl;
        cout << "NEXT: " << next_exp - exp << endl;
        cout << "STR: " << strength << endl;
        cout << "DEF: " << defence << endl;
    }
    void gain_exp(int n_exp)
    {
        char input;
        exp += n_exp;
        cout << "Gained " << n_exp << "EXP!\n";
        system("PAUSE");
        while (exp >= next_exp)
        {
            cout << endl;
            cout << "LEVEL UP!\n";
            cout << "What stat will you increase?\n";
            cout << " 1: MAXHP (+" << 5 * (level + 1) / 2 << ")\n";
            cout << " 2: STR (+" << 1 * (level + 1) / 2 << ")\n";
            cout << " 3: DEF (+" << 1 * (level + 1) / 2 << ")\n";
            while (true)
            {
                cout << "Selection: ";
                cin >> input;
                if (input == '1' || input == '2' || input == '3')
                    break;
                else
                    cout << "Invalid selection.\n";
            }
            cout << endl;
            if (input == '1')
            {
                maxhp += 5 * (level + 1) / 2;
                cout << "MAXHP: " << maxhp << endl;
            }
            else if (input == '2')
            {
                strength += 1 * (level + 1) / 2;
                cout << "STR: " << strength << endl;
            }
            else
            {
                defence += 1 * (level) / 2;
                cout << "DEF: " << defence << endl;
            }
            level += 1;
            hp = maxhp;
            exp -= next_exp;
            next_exp += next_exp / 2;
            system("PAUSE");
        }
        cout << endl;
    }
} player;
/*
 Enemy Class
*/
class Enemy : public Battler
{
public:
    int exp;
    Enemy(int level)
    {
        hp = (rand() % 6) + 5 * level;
        maxhp = hp;
        exp = hp / 2;
        strength = (rand() % 6) + 5 * level;
        defence = (rand() % 3) + 3 * level;
    }
    void print_status()
    {
        cout << "Enemy status:\n";
        cout << "HP: " << hp << "/" << maxhp << endl;
    }
};
char player_action()
{
    char input;
    cout << "What will you do?\n";
    cout << " 1: Attack\n 2: Defend\n 3: View Status\n";
    while (true)
    {
        cout << "Selection: ";
        cin >> input;
        if (input == '1' || input == '2' || input == '3')
            break;
        else
            cout << "Invalid selection.";
    }
    return input;
}
/*
 Main Processing
*/
int main()
{
    char input;
    int e_action;
    srand(time(0));
    cout << "BATTLE GAME!!\n";
    cout << "Defeat all the enemies without being defeated!\n\n";
    system("PAUSE");
    while (player.hp > 0)
    {
        cout << "Enemy appears!\n\n";
        Enemy enemy(player.level);
        // Combat Loop
        while (enemy.hp > 0)
        {
            // Player Selection Loop
            player.defending = false;
            while (true)
            {
                cout << endl;
                input = player_action();
                cout << endl;
                if (input == '1')
                {
                    cout << "You attack!\n";
                    enemy.attack_effect(player);
                    break;
                }
                else if (input == '2')
                {
                    cout << "You defends!\n";
                    player.defending = true;
                    break;
                }
                else
                    player.print_status();
                cout << endl;
            }
            system("PAUSE");
            // Enemy Action
            enemy.defending = false;
            cout << endl;
            if (enemy.hp > 0)
            {
                e_action = rand() % 5;
                if (e_action == 3)
                {
                    cout << "Enemy defends!\n";
                    enemy.defending = true;
                }
                else
                {
                    cout << "Enemy attacks!\n";
                    player.attack_effect(enemy);
                    if (player.hp == 0)
                    {
                        cout << "Game over...\n";
                        system("PAUSE");
                        return 0;
                    }
                }
                system("PAUSE");
            }
        }
        cout << "Enemy has fallen!\n";
        player.gain_exp(enemy.exp);
        system("CLS");
    }
    return 0;
}

Please note that this uses Windows libraries. If you intend on compiling on a different OS, do make the changes in the script where necessary.

 

[Mega Flare]

thats some pretty good code there. I got one Complant. I dont like how you got your code writen down. I think it looks ugly. But maybe thats how you learned. But other then that its a good game. Simple but good

 

[Anonymous]

link don't work.

 

[Sleepy_Dragon]

Even though I'm not a C++ programmer (I like C) I do understand the code and it looks pretty good. There are some things I would do differently though...mainly on preference of style.
Since I tend to write code ment to be run on Linux, BSD, and Windows I got in the habbit of:
Making great use of Macros to divide up platform specific parts of the code.
Specifying the sign of a variable (signed unsigned).
Adding debuging code that is only compiled in if a flag for it is raised during compiling
and lots of other stuff...
For a program this small I wouldn't worry about any of that but keep it in mind. Also if you ever use Macros extensively watch your self as some ungodly bugs can occure from their incorrect use...god I have some horror stories...