How to make a game save file editor 간단한 게임 에디터 만들기

Explains how to make a game(Prince of Persia) save file editor with C++.

C++를 이용한 간단한 게임 세이브 파일 에디터 소스 입니다.

#include <iostream>
#include <fstream>
 
using namespace std;
 
int main(int argc, char* argv[])
{
    if (argc != 3)
    {
        cout << "Usage : " << argv[0] << " [save file name] [energy]" << endl;
        cout << "Example: " << argv[0] << " prince.sav 8" << endl;
        return -1;
    }
 
    short value = atoi(argv[2]); // 2 byte value (for 16 bit old dos game)
 
    ofstream fout(argv[1], ios_base::binary | ios_base::out | ios_base::in);
    if (!fout.is_open())
    {
        cout << "Can't find " << argv[1] << endl;
        return -1;
    }
 
    fout.seekp(0x06, ios_base::beg); // Prince's energy saved at 0x06~0x07 (2 byte)
    fout.write((char*)& value, sizeof(short)); // 2 byte
 
    fout.close();
 
    cout << "Success!" << endl;
 
    return 0;
}