C++ Network::IsServerRunning方法代码示例

void Chat::HandleNetworkMessage(StringHash eventType, VariantMap& eventData)
{
    Network* network = GetSubsystem<Network>();
    
    using namespace NetworkMessage;
    
    int msgID = eventData[P_MESSAGEID].GetInt();
    if (msgID == MSG_CHAT)
    {
        const PODVector<unsigned char>& data = eventData[P_DATA].GetBuffer();
        // Use a MemoryBuffer to read the message data so that there is no unnecessary copying
        MemoryBuffer msg(data);
        String text = msg.ReadString();
        
        // If we are the server, prepend the sender's IP address and port and echo to everyone
        // If we are a client, just display the message
        if (network->IsServerRunning())
        {
            Connection* sender = static_cast<Connection*>(eventData[P_CONNECTION].GetPtr());
            
            text = sender->ToString() + " " + text;
            
            VectorBuffer sendMsg;
            sendMsg.WriteString(text);
            // Broadcast as in-order and reliable
            network->BroadcastMessage(MSG_CHAT, true, true, sendMsg);
        }
        
        ShowChatText(text);
    }
}

void Chat::UpdateButtons()
{
    Network* network = GetSubsystem<Network>();
    Connection* serverConnection = network->GetServerConnection();
    bool serverRunning = network->IsServerRunning();
    
    // Show and hide buttons so that eg. Connect and Disconnect are never shown at the same time
    sendButton_->SetVisible(serverConnection != 0);
    connectButton_->SetVisible(!serverConnection && !serverRunning);
    disconnectButton_->SetVisible(serverConnection || serverRunning);
    startServerButton_->SetVisible(!serverConnection && !serverRunning);
}

void Chat::HandleDisconnect(StringHash eventType, VariantMap& eventData)
{
    Network* network = GetSubsystem<Network>();
    Connection* serverConnection = network->GetServerConnection();
    // If we were connected to server, disconnect
    if (serverConnection)
        serverConnection->Disconnect();
    // Or if we were running a server, stop it
    else if (network->IsServerRunning())
        network->StopServer();
    
    UpdateButtons();
}

void SceneReplication::HandleDisconnect(StringHash eventType, VariantMap& eventData)
{
    Network* network = GetSubsystem<Network>();
    Connection* serverConnection = network->GetServerConnection();
    // If we were connected to server, disconnect. Or if we were running a server, stop it. In both cases clear the
    // scene of all replicated content, but let the local nodes & components (the static world + camera) stay
    if (serverConnection)
    {
        serverConnection->Disconnect();
        scene_->Clear(true, false);
        clientObjectID_ = 0;
    }
    // Or if we were running a server, stop it
    else if (network->IsServerRunning())
    {
        network->StopServer();
        scene_->Clear(true, false);
    }
    
    UpdateButtons();
}

void SceneReplication::HandlePhysicsPreStep(StringHash eventType, VariantMap& eventData)
{
    // This function is different on the client and server. The client collects controls (WASD controls + yaw angle)
    // and sets them to its server connection object, so that they will be sent to the server automatically at a
    // fixed rate, by default 30 FPS. The server will actually apply the controls (authoritative simulation.)
    Network* network = GetSubsystem<Network>();
    Connection* serverConnection = network->GetServerConnection();
    
    // Client: collect controls
    if (serverConnection)
    {
        UI* ui = GetSubsystem<UI>();
        Input* input = GetSubsystem<Input>();
        Controls controls;
        
        // Copy mouse yaw
        controls.yaw_ = yaw_;
        
        // Only apply WASD controls if there is no focused UI element
        if (!ui->GetFocusElement())
        {
            controls.Set(CTRL_FORWARD, input->GetKeyDown('W'));
            controls.Set(CTRL_BACK, input->GetKeyDown('S'));
            controls.Set(CTRL_LEFT, input->GetKeyDown('A'));
            controls.Set(CTRL_RIGHT, input->GetKeyDown('D'));
        }
        
        serverConnection->SetControls(controls);
        // In case the server wants to do position-based interest management using the NetworkPriority components, we should also
        // tell it our observer (camera) position. In this sample it is not in use, but eg. the NinjaSnowWar game uses it
        serverConnection->SetPosition(cameraNode_->GetPosition());
    }
    // Server: apply controls to client objects
    else if (network->IsServerRunning())
    {
        const Vector<SharedPtr<Connection> >& connections = network->GetClientConnections();
        
        for (unsigned i = 0; i < connections.Size(); ++i)
        {
            Connection* connection = connections[i];
            // Get the object this connection is controlling
            Node* ballNode = serverObjects_[connection];
            if (!ballNode)
                continue;
            
            RigidBody* body = ballNode->GetComponent<RigidBody>();
            
            // Get the last controls sent by the client
            const Controls& controls = connection->GetControls();
            // Torque is relative to the forward vector
            Quaternion rotation(0.0f, controls.yaw_, 0.0f);
            
            const float MOVE_TORQUE = 3.0f;
            
            // Movement torque is applied before each simulation step, which happen at 60 FPS. This makes the simulation
            // independent from rendering framerate. We could also apply forces (which would enable in-air control),
            // but want to emphasize that it's a ball which should only control its motion by rolling along the ground
            if (controls.buttons_ & CTRL_FORWARD)
                body->ApplyTorque(rotation * Vector3::RIGHT * MOVE_TORQUE);
            if (controls.buttons_ & CTRL_BACK)
                body->ApplyTorque(rotation * Vector3::LEFT * MOVE_TORQUE);
            if (controls.buttons_ & CTRL_LEFT)
                body->ApplyTorque(rotation * Vector3::FORWARD * MOVE_TORQUE);
            if (controls.buttons_ & CTRL_RIGHT)
                body->ApplyTorque(rotation * Vector3::BACK * MOVE_TORQUE);
        }
    }
}