Fix child process invalid usage at different places

src/network/game_setup.cpp

@@ -31,6 +31,7 @@
 #include "race/race_manager.hpp"
 #include "utils/file_utils.hpp"
 #include "utils/log.hpp"
+#include "utils/stk_process.hpp"
 #include "utils/string_utils.hpp"
 
 #include <algorithm>
@@ -75,7 +76,7 @@ void GameSetup::loadWorld()
     // goals / time limit and random item location
     assert(!m_tracks.empty());
     // Disable accidentally unlocking of a challenge
-    if (PlayerManager::getCurrentPlayer())
+    if (STKProcess::getType() == PT_MAIN && PlayerManager::getCurrentPlayer())
         PlayerManager::getCurrentPlayer()->setCurrentChallenge("");
     RaceManager::get()->setTimeTarget(0.0f);
     if (RaceManager::get()->isSoccerMode() ||

src/network/protocols/lobby_protocol.cpp

@@ -47,7 +47,8 @@
 std::weak_ptr<LobbyProtocol> LobbyProtocol::m_lobby[PT_COUNT];
 
 LobbyProtocol::LobbyProtocol()
-                 : Protocol(PROTOCOL_LOBBY_ROOM)
+             : Protocol(PROTOCOL_LOBBY_ROOM),
+               m_process_type(STKProcess::getType())
 {
     resetGameStartedProgress();
     m_game_setup = new GameSetup();
@@ -86,7 +87,9 @@ void LobbyProtocol::loadWorld()
     StateManager::ActivePlayer *ap = RaceManager::get()->getNumLocalPlayers()>1
                                    ? NULL
                                    : StateManager::get()->getActivePlayer(0);
-    input_manager->getDeviceManager()->setSinglePlayer(ap);
+    // We only need to use input manager in main process
+    if (m_process_type == PT_MAIN)
+        input_manager->getDeviceManager()->setSinglePlayer(ap);
 
     // Load the actual world.
     m_game_setup->loadWorld();

src/network/protocols/lobby_protocol.hpp

@@ -102,6 +102,7 @@ public:
     };
 
 protected:
+    const ProcessType m_process_type;
     /** Vote from each peer. The host id is used as a key. Note that
      *  host ids can be non-consecutive, so we cannot use std::vector. */
     std::map<uint32_t, PeerVote> m_peers_votes;