C++ DataBuffer::getSize方法代码示例

int UDPManager::sendDatagram(DataBuffer * data, unsigned long ipAddress, unsigned long port, unsigned long frameCount) {
	if (initErrors || data == NULL || port == 0) return -1;

	sockaddr_in otherAddress;
	otherAddress.sin_family = AF_INET;
	otherAddress.sin_addr.s_addr = ipAddress;
	otherAddress.sin_port = port;

	int packetSize = data->getSize();
	DataBuffer * sendBuffer = new DataBuffer(packetSize + 4);
	//sendBuffer->copy(0, &packetSize, sizeof(int));
	sendBuffer->copy(0, &frameCount, 4);
	sendBuffer->copy(4, data->getData(), data->getSize());

	if (sendto(sock, sendBuffer->getData(), sendBuffer->getSize(), 0, (struct sockaddr *)&otherAddress, sizeof(otherAddress)) < 0) {
		perror("UDP sendto() failed\n");
		delete sendBuffer;
		return -1;
	}

	//printf("UDP Send:");
	//Utilities::printfNetworkPacket(sendBuffer->getData(), sendBuffer->getSize());
	delete sendBuffer;

	return 0;
}

int Server::synchClient(int clientID)
{
	//aquireClientsMutex(clientID);
		//Clear Objects
		DataBuffer * temp = NetworkFunctions::createClearObjectsBuffer();
		clients[clientID]->pushSendData(temp->getData(), temp->getSize());
		delete temp;

		//Add Existing Objects
		for (list<pair<unsigned long, GameObject*>>::iterator iter = gameObjects->begin(); iter != gameObjects->end(); iter++) {
			temp = NetworkFunctions::createCreateObjectBuffer(iter->second);
			clients[clientID]->pushSendData(temp->getData(), temp->getSize());
			delete temp;
		}
		/*for (int i = 0; i < gameObjects->size(); i++) {
			temp = NetworkFunctions::createCreateObjectBuffer(gameObjects->at(i));
			clients[clientID]->pushSendData(temp->getData(), temp->getSize());
			delete temp;
		}*/

		for (int i = 0; i < playerObjects->size(); i++) {
			if (playerObjects->at(i) != NULL) {
				//Add All Existing Spells to players
				/*for (int elementIndex = 0; elementIndex < 5; elementIndex++) {
					for (int subIndex = 0; subIndex < playerObjects->at(i)->getSpells()[elementIndex].size(); subIndex++) {
						Spell * tempSpell = playerObjects->at(i)->getSpell(elementIndex, subIndex);
						if (tempSpell != NULL) {
							temp = NetworkFunctions::createAddSpellBuffer(clientID, elementIndex, tempSpell->getSpellID());
							clients[clientID]->pushSendData(temp->getData(), temp->getSize());
						}
					}
				}*/

				//Change Spell to active one
				int currentElementIndex, currentSubIndex;
				playerObjects->at(i)->getActiveSpellIndices(&currentElementIndex, &currentSubIndex);
				temp = NetworkFunctions::createChangeSpellBuffer(i, currentElementIndex, currentSubIndex);
				clients[clientID]->pushSendData(temp->getData(), temp->getSize());
			}
		}
		//send all the items to create
	//releaseClientsMutex(clientID);

	return 0;
}

void Texture::create(char *name, char *filename, unsigned char relativePath, unsigned int flags,
		unsigned char filter, float anisotropicFilter) {
	strcpy(this->name, name);
	DataBuffer *dataBuffer = new DataBuffer();
	dataBuffer->read(filename, relativePath);
	if (dataBuffer->getSize()) {
		load(dataBuffer);
		generateId(flags, filter, anisotropicFilter);
		freePixel();
		delete dataBuffer;
	}
}

// ---------------------------------------------
void testSocket(string ip, unsigned short port) {
    Socket* socket = new Socket("null", 0);

    Socket::InetAddressPort remoteAddrAndPort;
    remoteAddrAndPort.port = port;
    Socket::getSockaddrByIpAndPort(&remoteAddrAndPort.addr, ip, port);

    socket->makeNonBlocking();
    while (true) {
        bool result  = socket->connect(remoteAddrAndPort);
        if (result) {
            cout << "connect success!" << endl;

            cm::Thread::sleep(100);

            char sendData[] = "TCP client request";
            int numberOfBytesSent;
            if (SKT_SUCC == socket->send(sendData, strlen(sendData), numberOfBytesSent)) {
                assert(numberOfBytesSent == strlen(sendData));
                cout << "send " << numberOfBytesSent << " bytes data complete" << endl;

                DataBuffer* response = new DataBuffer();
                int numOfBytesRecved = 0;

                while (true) {
                    result = socket->recv(response->getEndOfDataPointer(), response->getSize() - response->getLength(), numOfBytesRecved);
                    assert(result != SKT_ERR);
                    if (result == SKT_SUCC) {
                        assert(numOfBytesRecved != 0);
                        response->increaseDataLength(numOfBytesRecved);
                        cout << "recv " << numOfBytesRecved << " bytes data: " << response->getData() << endl;
                        response->reset();
                        break;
                    } else {
                        cm::Thread::sleep(1);
                    }
                }
            }

            socket->close();
            break;
        } else {
            cm::Thread::sleep(1);
        } 
    }
}

//.........这里部分代码省略.........
					delete playerObjects->at(i);
					playerObjects->at(i) = NULL;
					//gameObjects->erase(gameObjects->begin() + index);
					serverEventsTCP->appendToSendBuffer(NetworkFunctions::createDeleteObjectBuffer(index));
				}
			releaseClientsMutex(i);
			serverEventsTCP->appendToReceiveBuffer(temp);
		}

		//Receive All UDP Events
		sockaddr_in * originAddress = NULL;
		DataBuffer * udpBuffer = UDPManager::recvDatagram(&originAddress);
		while (udpBuffer != NULL) {
			//origin Address matches client address?
			unsigned long packetFrameCount = 0;
			memcpy(&packetFrameCount, udpBuffer->getData(), 4);

			int clientID = getClientIDByAddress(originAddress->sin_addr.s_addr, originAddress->sin_port);
			if (clientID == -1) {
				int asdfadsfasdf = 123123;
			}
			else {
				//compare clientFrameCount to client->frameCount
				unsigned long clientFrameCount;
				aquireClientsMutex(clientID);
					clientFrameCount = clients[clientID]->getFrameCount();
				releaseClientsMutex(clientID);

				if (packetFrameCount < clientFrameCount) {
					//discard
					printf("Packet from Client %d discarded\n", clientID);
				}
				else {
					serverEventsUDP->appendToReceiveBuffer(udpBuffer->getData() + 4, udpBuffer->getSize() - 4);
					aquireClientsMutex(clientID);
						clients[clientID]->setFrameCount(packetFrameCount);
					releaseClientsMutex(clientID);
				}

			}
			
			delete udpBuffer; udpBuffer = NULL;
			delete originAddress; originAddress = NULL;
			udpBuffer = UDPManager::recvDatagram(&originAddress);
		}

		NetworkFunctions::translateReceivedEvents(serverEventsTCP);
		NetworkFunctions::translateReceivedEvents(serverEventsUDP);
		
		//Execute my own gamelogic commands
		SDL_Event e;
		while (SDL_PollEvent(&e)) { 
			if (e.key.keysym.sym == SDLK_ESCAPE)
						running = false;
			if (e.key.keysym.sym == SDLK_m) {
				((RigidObject*)gameObjects->getValue(2))->setPosition(5, 10, 0);
				((RigidObject*)gameObjects->getValue(3))->setPosition(0, 10, 0);
				((RigidObject*)gameObjects->getValue(4))->setPosition(-5, 10, 0);
				((RigidObject*)gameObjects->getValue(2))->setVelocity(0, 0, 0);
				((RigidObject*)gameObjects->getValue(3))->setVelocity(0, 0, 0);
				((RigidObject*)gameObjects->getValue(4))->setVelocity(0, 0, 0);
				((RigidObject*)gameObjects->getValue(2))->setGravity(0, -9.81f*4.0f, 0);
				((RigidObject*)gameObjects->getValue(3))->setGravity(0, -9.81f*4.0f, 0);
				((RigidObject*)gameObjects->getValue(4))->setGravity(0, -9.81f*4.0f, 0);
				printf("reset boxes\n");
			}

DataBuffer::DataBuffer(const DataBuffer &dataBuffer, std::size_t offset, std::size_t count)
{
	count = offset + count >= dataBuffer.getSize() ? dataBuffer.getSize() - offset : count;
	_data.reserve(count);
	std::copy(dataBuffer._data.begin() + offset, dataBuffer._data.begin() + offset + count, std::back_inserter(_data));
}

int NetworkFunctions::translateReceivedEvents(Packet * serverEvents)
{
	while (serverEvents->getReceiveBufferSize() > 0) {
		DataBuffer * tempBuffer = new DataBuffer(MAX_PACKET_SIZE);

		int charCount = 0;
		int functionIndex = -1;
		int bufferLength = -1;
		for (int i = 0; i < serverEvents->getReceiveBufferSize(); i++) {
			tempBuffer->copy(tempBuffer->getSize(), serverEvents->getReceiveBuffer() + i, 1);

			if (charCount == 3) {
				memcpy(&functionIndex, tempBuffer->getData(), 4);
				if (functionIndex < 0 || functionIndex >= FUNCTION_COUNT || functionIndex == 10) {
					while ((serverEvents->getReceiveBuffer()[i]) != '\n') i++;
					tempBuffer->clear();
					continue;
				}
				else {
					bufferLength = bufferSizes[functionIndex];
				}
			}

			if (charCount == 7 && functionIndex == EVENT_UPDATE_GAME_OBJECT) {
				unsigned long netID = 0;
				memcpy(&netID, tempBuffer->getData() + 4, 4);
				GameObject * tempObject = gameObjects->getValue(netID);
				if (tempObject == NULL) {
					while ((serverEvents->getReceiveBuffer()[i]) != '\n') i++;
					tempBuffer->clear();
					continue;
				}
				/*int objectIndex = -1;
				memcpy(&objectIndex, tempBuffer->getData() + 4, 4);
				if (objectIndex < 0 || objectIndex >= gameObjects->size()) {
					while ((serverEvents->getReceiveBuffer()[i]) != '\n') i++;
					tempBuffer->clear();
					continue;
				}*/
				else {
					bufferLength = tempObject->getSerializedSize();
				}
			}

			if (charCount == bufferLength-1) {
				if (tempBuffer->getSize() == 0) {
					tempBuffer->clear();
					continue;
				}

				executeIndexedFunction(tempBuffer);
				tempBuffer->clear();
				charCount = 0;
				continue;
			}

			/*if (serverEvents->getReceiveBuffer()[i] == '\n') {
				if (tempBuffer->getSize() == 0) {
					tempBuffer->clear();
					continue;
				}

				executeIndexedFunction(tempBuffer);

				tempBuffer->clear();
			}*/
			charCount++;
		}
		delete tempBuffer;
		serverEvents->refillReceiveBuffer();
	}
	return 0;
}