#include "stdafx.h"
#include <windows.h>
#include <iostream>
#include <Tlhelp32.h>

using namespace std;
HMODULE Clientdll = NULL;
/*HWND hwnd;
HANDLE phandle;
DWORD pid;*/

DWORD GetProcessIDFromName(LPSTR szProcName)                                        //this function gets the id of a process using a name (hl2.exe for instance)
{
    PROCESSENTRY32 procEntry;
    HANDLE hSnapshot;
    BOOL bFound;

    if(!(hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0))) return 0;
    procEntry.dwSize = sizeof(PROCESSENTRY32);

    bFound = Process32First(hSnapshot, &procEntry);
    while(bFound)
    {
        if(!lstrcmp(procEntry.szExeFile, szProcName))
        {
            CloseHandle(hSnapshot);
            return procEntry.th32ProcessID;
        }
        bFound = Process32Next(hSnapshot, &procEntry);
    }
    CloseHandle(hSnapshot);
    return 0;
}

HMODULE GetModuleHandleExtern( char *szModuleName, DWORD dwProcessId )                  //GetMoguleHandle recode for external processes
{
   if( !szModuleName || !dwProcessId ) { return NULL; }                                 //invalid input
   HANDLE hSnap = CreateToolhelp32Snapshot( TH32CS_SNAPMODULE, dwProcessId );
   if( hSnap == INVALID_HANDLE_VALUE ) { return NULL; }
   MODULEENTRY32 me;
   me.dwSize = sizeof( MODULEENTRY32 );
   if( Module32First( hSnap, &me ) )                                                    //we go now
   {
      while( Module32Next( hSnap, &me ) )                                               //through all modules in the target process
      {
         if( !strcmp( me.szModule, szModuleName ) )                                     //is this the model we are looking for?
         {
            CloseHandle( hSnap );
            return me.hModule;                                                          //this is our module, return it.
         }
      }
   }
   CloseHandle( hSnap );
   return NULL;                                                                         //counldn't find module
}

int main ()
{
    cout << "waiting for counter strike source...\n";
    while( FindWindowA( "Valve001", NULL ) == NULL )                                    //before getting the module handle i wait for css
    {
        Sleep( 100 );
    }

    /*
    while (!hwnd)                                                                       //this is a test trying to fix the actual issue
    {
        hwnd = FindWindowA( "Valve001", NULL );
    }
    GetWindowThreadProcessId(hwnd, &pid);
    phandle = OpenProcess(PROCESS_ALL_ACCESS, 0, pid);
    */

    cout << "found the game!\n";
    cout << "the id of process is: " << GetProcessIDFromName("hl2.exe") << "\n";        //showing the id to debug better
    cout << "getting the module handle of client.dll\n";
    do
    {
        Clientdll = GetModuleHandleExtern("client.dll", GetProcessIDFromName("hl2.exe"));   //at this point we get the module handle from an ext process
        Sleep(20);                                                                          //thanks a lot to mencore
    }
    while(Clientdll == NULL);                                                               //just looping it until we get it even if this shouldn't be needed

    cout << "got the module handle!!!";
    cout << "the base is: " << Clientdll << "\n";                                           //showing it to debug it

    while (!GetAsyncKeyState(VK_F10))                                                       //loops the bhop code untill f10 is pressed
    {
        if( (*(int*)((DWORD)Clientdll + 0x590A0C) == 0) && (GetAsyncKeyState(VK_MENU)<0) )  //checks for OnGround->yes and ALT->pressed
        {
            keybd_event(VK_SPACE, 0x39, 0, 0);                                              //simulates jump...
            Sleep(60);
            keybd_event(VK_SPACE, 0x39, KEYEVENTF_KEYUP, 0);
        }
        Sleep(1);                                                                           //this value could be changed to a greater one to fit slower pc's
    }
    return 0;
}