Game Loop

void Minecraft::run_middle()
{
    static __int64 lastTime = 0;
    static int frames = 0;
    
    if (running) {
        AABB::resetPool();
        Vec3::resetPool();
        
        // Process autosave timer
        // Handle ban list checks
        // Update player viewports
        
        // Store button presses for all players
        for (int i = 0; i < XUSER_MAX_COUNT; i++) {
            if (localplayers[i]) {
                // Capture input for processing
            }
        }
    }
}

timer = new Timer(SharedConstants::TICKS_PER_SECOND);

while (unprocessedTime > MS_PER_TICK) {
    unprocessedTime -= MS_PER_TICK;
    tick();
}

// Rendering uses interpolation
gameRenderer->render(timer->a);

#ifndef DISABLE_LEVELTICK_THREAD
levelTickEventQueue = new C4JThread::EventQueue(
    levelTickUpdateFunc, 
    levelTickThreadInitFunc, 
    "LevelTick_EventQueuePoll"
);
levelTickEventQueue->setProcessor(3);
levelTickEventQueue->setPriority(THREAD_PRIORITY_NORMAL);
#endif

C4JThread* thread = new C4JThread(
    runFunction,      // Thread function
    parameter,        // User data
    "ThreadName",     // Debug name
    stackSize         // Stack size in bytes
);

thread->SetProcessor(cpuCore);     // Pin to CPU core
thread->SetPriority(priority);     // Set thread priority
thread->Run();                     // Start execution

EventQueue* queue = new EventQueue(
    updateFunc,
    initFunc,
    "QueueName"
);

if (pause && level != NULL) {
    float lastA = timer->a;
    timer->advanceTime();
    timer->a = lastA;  // Preserve interpolation
}

if (!m_isServerPaused) {
    while (unprocessedTime > MS_PER_TICK) {
        tick();
    }
} else {
    // Keep connections alive
    connection->tick();
}

static __int64 frameTimes[512];
static __int64 tickTimes[512];
static int frameTimePos = 0;

AABB::resetPool();   // Reset bounding box pool
Vec3::resetPool();   // Reset vector pool

for (int i = 0; i < XUSER_MAX_COUNT; i++) {
    if (setLocalPlayerIdx(i)) {
        // Process player i
        // Each player gets their viewport
    }
}

bool Minecraft::setLocalPlayerIdx(int idx) {
    localPlayerIdx = idx;
    gameMode = localgameModes[idx];
    player = localplayers[idx];
    level = getLevel(localplayers[idx]->dimension);
    return true;
}