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sample: screen control sample
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‎samples/InteractiveScreenControlSample/InteractiveSample.vcxproj‎

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‎samples/InteractiveScreenControlSample/InteractiveSample.vcxproj.filters‎

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‎samples/InteractiveScreenControlSample/InteractiveScreenControlSample.cpp‎

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#include "stdafx.h"
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#include "../../source/interactivity.h"
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#include "../../source/internal/rapidjson/Document.h"
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#include <windows.h>
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#include <shellapi.h>
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// STL includes
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#include <chrono>
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#include <thread>
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#include <iostream>
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#include <map>
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#include <string>
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#define CLIENT_ID "f0d20e2d263b75894f5cdaabc8a344b99b1ea6f9ecb7fa4f"
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#define INTERACTIVE_ID "247834"
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#define SHARE_CODE "v8t3hlaa"
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#define MIXER_DEBUG 0
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std::map<std::string, std::string> controlsByTransaction;
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// Display an OAuth consent page to the user.
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int authorize(std::string& authorization);
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// Handle interactive input.
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void handle_interactive_input(void* context, interactive_session session, const interactive_input* input);
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int main()
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{
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int err = 0;
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#if MIXER_DEBUG
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interactive_config_debug(interactive_debug_trace, [](const interactive_debug_level dbgMsgType, const char* dbgMsg, size_t dbgMsgSize)
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{
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std::cout << dbgMsg << std::endl;
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});
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#endif
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// Get an authorization token for the user to pass to the connect function.
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std::string authorization;
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err = authorize(authorization);
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if (err) return err;
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// Connect to the user's interactive channel, using the interactive project specified by the version ID.
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interactive_session session;
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err = interactive_open_session(authorization.c_str(), INTERACTIVE_ID, SHARE_CODE, false, &session);
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if (err) return err;
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// Register a callback for button presses.
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err = interactive_set_input_handler(session, handle_interactive_input);
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if (err) return err;
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// Now notify participants that interactive is ready.
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err = interactive_set_ready(session, true);
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if (err) return err;
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// Simulate game update loop. All previously registered session callbacks will be called from this thread.
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for (;;)
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{
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// This call processes any waiting messages from the interactive service. If there are no messages this returns immediately.
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err = interactive_run(session, 1);
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if (err) break;
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std::this_thread::sleep_for(std::chrono::milliseconds(16));
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}
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interactive_close_session(session);
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return err;
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}
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int authorize(std::string& authorization)
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{
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int err = 0;
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char shortCode[7];
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size_t shortCodeLength = _countof(shortCode);
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char shortCodeHandle[1024];
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size_t shortCodeHandleLength = _countof(shortCodeHandle);
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// Get an OAuth short code from the user. For more information about OAuth see: https://oauth.net/2/
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err = interactive_auth_get_short_code(CLIENT_ID, nullptr, shortCode, &shortCodeLength, shortCodeHandle, &shortCodeHandleLength);
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if (err) return err;
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// Pop the browser for the user to approve access.
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std::string authUrl = std::string("https://www.mixer.com/go?code=") + shortCode;
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ShellExecuteA(0, 0, authUrl.c_str(), nullptr, nullptr, SW_SHOW);
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// Wait for OAuth token response.
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char refreshTokenBuffer[1024];
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size_t refreshTokenLength = _countof(refreshTokenBuffer);
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err = interactive_auth_wait_short_code(CLIENT_ID, nullptr, shortCodeHandle, refreshTokenBuffer, &refreshTokenLength);
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if (err)
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{
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if (MIXER_ERROR_TIMED_OUT == err)
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{
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std::cout << "Authorization timed out, user did not approve access within the time limit." << std::endl;
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}
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else if (MIXER_ERROR_AUTH_DENIED == err)
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{
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std::cout << "User denied access." << std::endl;
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}
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return err;
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}
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/*
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* TODO: This is where you would serialize the refresh token locally or on your own service for future use in a way that is associated with the current user.
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* Future calls would then only need to check if the token is stale, refresh it if so, and then parse the new authorization header.
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*/
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// Extract the authorization header from the refresh token.
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char authBuffer[1024];
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size_t authBufferLength = _countof(authBuffer);
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err = interactive_auth_parse_refresh_token(refreshTokenBuffer, authBuffer, &authBufferLength);
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if (err) return err;
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// Set the authorization out parameter.
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authorization = std::string(authBuffer, authBufferLength);
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return 0;
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}
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int get_participant_name(interactive_session session, const char* participantId, std::string& participantName)
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{
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// Get the participant's name.
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size_t participantNameLength = 0;
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// First call with a nullptr to get the required size for the user's name, MIXER_ERROR_BUFFER_SIZE is the expected return value.
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int err = interactive_participant_get_user_name(session, participantId, nullptr, &participantNameLength);
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if (MIXER_ERROR_BUFFER_SIZE != err)
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{
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return err;
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}
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// Resize the string to the correct size and call it again.
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participantName.resize(participantNameLength);
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err = interactive_participant_get_user_name(session, participantId, (char*)participantName.data(), &participantNameLength);
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// STL strings don't need a trailing null character.
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participantName = participantName.erase(participantNameLength - 1);
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return 0;
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}
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void handle_interactive_input(void* context, interactive_session session, const interactive_input* input)
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{
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// Get the participant's Mixer name to give them attribution.
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std::string participantName;
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int err = get_participant_name(session, input->participantId, participantName);
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if (err)
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{
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std::cerr << "Failed to get participant user name (" << std::to_string(err) << ")" << std::endl;
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return;
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}
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// Now handle the input based on input type.
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if ((input_type_key == input->type || input_type_click == input->type) && interactive_button_action_down == input->buttonData.action)
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{
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float x = input->coordinateData.x;
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float y = input->coordinateData.y;
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std::cout << participantName << " clicked x: " + std::to_string(x) << " y: " << std::to_string(y) << std::endl;
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}
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else if (input_type_move == input->type)
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{
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// Show which user moved the joystick.
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float x = input->coordinateData.x;
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float y = input->coordinateData.y;
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std::cout << participantName << " moved pointer to x: " + std::to_string(x) << " y: " << std::to_string(y) << std::endl;
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}
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}

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