[C++][Windows-only] Twitch Plays Pokémon Input Generator Bot

tom_mai78101

The Helper Connoisseur / Ex-MineCraft Host
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Github project page. (More up-to-date than the code below.)

This is the source code of the input generator bot for use with Twitch Plays Pokémon, where the user types in up, down, left, right, start, select, a, and b to control the protagonist.

I created this bot for the fun of it. Using Win32 API, I was able to focus on the web browser that is playing the livestream, and type in the accepted inputs into the chat. It does not require any Twitch API whatsoever, as it is all sent through the Windows operating system. In fact, there's no foul play that Twitch can detect.

Unless you tweak the Sleep() value or let others know, you will almost never be detected by others who may think you are a bot.

Code:
#include <Windows.h>
#include <iostream>
#include <string>
#include <ctime>
#include <cstdlib>

//Converting chars to virtual codes
static HKL layout = GetKeyboardLayout(0);


void GenerateKey(int vk, bool extended){
    KEYBDINPUT keyboard = {};
    INPUT input = {};

    //Key down
    if (extended){
        keyboard.dwFlags = KEYEVENTF_EXTENDEDKEY;
    }
    keyboard.wVk = vk;
    input.type = INPUT_KEYBOARD;
    input.ki = keyboard;
    SendInput(1, &input, sizeof(input));

    //Key up
    keyboard = {};
    input = {};
    keyboard.dwFlags = KEYEVENTF_KEYUP;
    if (extended){
        keyboard.dwFlags |= KEYEVENTF_EXTENDEDKEY;
    }
    keyboard.wVk = vk;
    input.type = INPUT_KEYBOARD;
    input.ki = keyboard;
    SendInput(1, &input, sizeof(input));
    return;
}


void GenerateStrings(char* str, int size){
    for (int i = 0; i < size; i++){
        short vk = VkKeyScanEx(str[i], layout);
        GenerateKey(vk, false);
    }
    GenerateKey(VK_RETURN, false);
}

void main(){
    srand(time(0));
    int r_old = -1, r;
    while (true){
        //***   PLEASE CHANGE THIS TO WHATEVER FAVORITE BROWSER YOU ARE USING.
        //***   ALSO PLEASE MODIFY THE STRING VALUE IF THE TITLE OF YOUR TAB IS WRONG.
        //HWND window = FindWindow(0, "TwitchPlaysPokemon - Twitch - Google Chrome");
        //HWND window = FindWindow(0, "TwitchPlaysPokemon - Twitch - Mozilla Firefox");
        HWND window = FindWindow(0, "TwitchPlaysPokemon - Twitch - Internet Explorer");
        if (window){
            SetForegroundWindow(window);
            SetFocus(window);
        }
        r = rand() % 6;
        if (r_old != r){
            switch (r){
                case 0:{
                    GenerateStrings("down", 4);
                    break;
                }
                case 1:{
                    GenerateStrings("up", 2);
                    break;
                }
                case 2:{
                    GenerateStrings("left", 4);
                    break;
                }
                case 3:{
                    GenerateStrings("right", 5);
                    break;
                }
                case 4:{
                    GenerateStrings("a", 1);
                    break;
                }
                case 5:{
                    GenerateStrings("b", 1);
                    break;
                }
            }
            Sleep(5015);
        }
        r_old = r;
    }
}
 
Last edited:

Slapshot136

Divide et impera
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interesting how you don't even need a random sleep, I can't imagine any human that is THAT precise
 

tom_mai78101

The Helper Connoisseur / Ex-MineCraft Host
Staff member
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interesting how you don't even need a random sleep, I can't imagine any human that is THAT precise
I know that no one can be that precise, but that number is the smallest value of delay that Twitch chat bots can allow you to continue typing when the 5-second delay is used.
 

Slapshot136

Divide et impera
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It's not about the value itself, rather that even if you sent a message at such a regular frequency they don't notice anything
 

tom_mai78101

The Helper Connoisseur / Ex-MineCraft Host
Staff member
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It's not about the value itself, rather that even if you sent a message at such a regular frequency they don't notice anything
Oh yes, forgot to take account how many inputs there are getting. Nobody cares if it's intentional.
 

jonas

You can change this now in User CP.
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what would be fun is a distributed bot which really plays the game, e.g., negating bad moves that the other users make.
 

tom_mai78101

The Helper Connoisseur / Ex-MineCraft Host
Staff member
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1,632
what would be fun is a distributed bot which really plays the game, e.g., negating bad moves that the other users make.

You can do that by hosting a Twitch Plays a Bot, but you still need a game that is tolerable and less punishable for incorrect movements and controls.
 
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