Simple C++ RPG

rpg.cpp

//Simple C++ RPG
//by ChatGPT, Copilot and SnowyYANG
//https://snowyyang.itch.io/simple-cpp-rpg
#include <iostream>
#include <cstdlib>
#include <ctime>
#include <conio.h>

#define MAP_SIZE 10

// Define variables
int player_hp = 100, player_atk = 15, player_def = 10, player_gold = 0;

// Define monster
typedef struct {
    int x, y, hp, atk, def, gold;
} Monster;

Monster monsters[MAP_SIZE];

// Player position
int player_x = 0, player_y = 0;

// Game map
char map[10][10];

// Initialize monster
void init_monster(Monster& monster) {
    while(true) {
        monster.x = rand() % MAP_SIZE;
        monster.y = rand() % MAP_SIZE;
        if (map[monster.x][monster.y] == '.'&&!(monster.x==player_x&&monster.y==player_y)) break;
    }

    monster.hp = rand() % 100 + 50;
    monster.atk = rand() % 10 + 10;
    monster.def = rand() % 5 + 5;
    monster.gold = rand() % 49 + 1;
}

int lastgold;
// Battle with monster
void battle(Monster& monster) {
    while (player_hp > 0 && monster.hp > 0) {
        int damage = player_atk - monster.def;
        if (damage < 0) damage = 0;
        monster.hp -= damage;
        if (monster.hp <= 0) {
            player_gold += monster.gold;
            lastgold=monster.gold;
            return;
        }
        damage = monster.atk - player_def;
        if (damage < 0) damage = 0;
        player_hp -= damage;
    }
}

Monster& get_monster(int x, int y) {
    for(int i=0;i<MAP_SIZE;i++)
    {
        if(monsters[i].x==x && monsters[i].y==y)
        {
            return monsters[i];
        }
    }
}
void show_monster_info(int x, int y, const char* direction) {
    if (x >= 0 && x < MAP_SIZE && y >= 0 && y < MAP_SIZE && map[x][y] == 'M') {
        Monster& monster = get_monster(x, y);
        std::cout << direction << " HP: " << monster.hp << ", atk: " << monster.atk << ", def: " << monster.def << ", gold: " << monster.gold << std::endl;
    }
}

bool game_start;
// Show map
void show_map() {
    for (int i = 0; i < MAP_SIZE; i++) {
        for (int j = 0; j < MAP_SIZE; j++) {
            std::cout << map[i][j] << ' ';
        }
        std::cout << '\n';
    }
    std::cout << "Your HP: " << player_hp << ", atk: " << player_atk << ", def: " << player_def << ", gold: " << player_gold << std::endl;
    show_monster_info(player_x, player_y+1, "Right monster");
    show_monster_info(player_x+1, player_y, "Monster below");
    show_monster_info(player_x, player_y-1, "Left monster");
    show_monster_info(player_x-1, player_y, "Upper monster");
    if (game_start) {
        std::cout << "Press WASD to move, ESC to restart." << std::endl;
        game_start = false;
    }
    if (lastgold!=0)
    {
        std::cout << "You defeated a monster and got " << lastgold << " gold." << std::endl;
        lastgold=0;
    }
}

int main() {
    GAME_START:
    game_start = true;
    srand(time(0));  // Initialize random seed

    lastgold = 0;
    // Initialize game map
    for (int i = 0; i < MAP_SIZE; i++)
        for (int j = 0; j < MAP_SIZE; j++)
            map[i][j] = '.';

    // Place obstacles
    for (int i = 0; i < MAP_SIZE; i++)
        map[rand() % MAP_SIZE][rand() % MAP_SIZE] = '#';

    // Initialize monsters
    for (int i = 0; i < MAP_SIZE; i++) {
        init_monster(monsters[i]);
        map[monsters[i].x][monsters[i].y] = 'M';
    }

    // Place player
    map[player_x][player_y] = 'P'; //always start at 0,0

    while (player_hp > 0) {
        system("cls");  // Clear screen
        show_map();
        char command = _getch();

        map[player_x][player_y] = '.';  // Clear previous position
        int x0 = player_x;
        int y0 = player_y;
        if ((command == 'a' || command == 'A') && player_y > 0) player_y--;
        if ((command == 'd' || command == 'D') && player_y < MAP_SIZE - 1) player_y++;
        if ((command == 'w' || command == 'W') && player_x > 0) player_x--;
        if ((command == 's' || command == 'S') && player_x < MAP_SIZE - 1) player_x++;
        if (command == 27) goto GAME_START;  // Restart game

        // Check if player encounters a monster
        if (map[player_x][player_y] == 'M') {
            battle(get_monster(player_x, player_y));
        } else if (map[player_x][player_y] == '#') {
            player_x=x0;
            player_y=y0;
        }
        map[player_x][player_y] = 'P';  // Update player position
    }

    std::cout << "You die. Got " << player_gold << " gold in total." << std::endl;

    return 0;
}