FEAT: Player data saving/loading

src/client/gamemode/SurvivalMode.cpp

@@ -68,6 +68,7 @@ bool SurvivalMode::destroyBlock( int x, int y, int z, int face ) {
 			minecraft->player->inventory->clearSlot(minecraft->player->inventory->selected);
 		}
 	}
+	
 	if (changed && couldDestroy) {
 		ItemInstance instance(t, 1, data);
 		Tile::tiles[t]->playerDestroy(minecraft->level, minecraft->player, x, y, z, data);

src/network/ClientSideNetworkHandler.cpp

@@ -395,6 +395,11 @@ void ClientSideNetworkHandler::handle(const RakNet::RakNetGUID& source, SendInve
 		auto items = packet->items;
 		
 		minecraft->player->inventory->replace(items);
+
+		for (int i = 0; i < packet->linkedSlot.size(); i++) {
+			minecraft->player->inventory->linkSlot(i, packet->linkedSlot[i].inventorySlot, true);
+			LOGI("%i -> %i\n", packet->linkedSlot[i].inventorySlot, i);
+		}
 	}
 }
 

src/network/ServerSideNetworkHandler.cpp

@@ -22,6 +22,7 @@
 #include "../raknet/PacketPriority.h"
 #include "platform/log.h"
 #include "world/item/ItemInstance.h"
+#include "world/level/storage/LevelStorage.h"
 #include "world/phys/Vec3.h"
 #include "world/item/crafting/Recipe.h"
 #include "world/item/crafting/Recipes.h"
@@ -169,6 +170,8 @@ void ServerSideNetworkHandler::onDisconnect(const RakNet::RakNetGUID& guid)
 
 		if (player->owner == guid)
 		{
+			minecraft->level->getLevelStorage()->savePlayer(*player);
+
 			std::string message = player->name;
 			message += " disconnected from the game";
 			displayGameMessage(message);
@@ -319,6 +322,36 @@ void ServerSideNetworkHandler::onReady_ClientGeneration(const RakNet::RakNetGUID
 		}
 	}
 
+	if (!minecraft->level->getLevelStorage()->loadPlayer(*newPlayer)) {
+		LOGW("Failed to load %s data\n", newPlayer->name.c_str());
+	}
+
+	// Credits to EpikIzCool
+	bitStream.Reset();
+	MovePlayerPacket mv(newPlayer->entityId, newPlayer->x, newPlayer->y - newPlayer->heightOffset,
+		newPlayer->z, newPlayer->xRot, newPlayer->yRot);
+	mv.write(&bitStream);
+
+	rakPeer->Send(&bitStream, HIGH_PRIORITY, RELIABLE_ORDERED, 0, source, false);
+	
+	bitStream.Reset();
+	SetHealthPacket hp(newPlayer->health);
+	hp.write(&bitStream);
+	
+	rakPeer->Send(&bitStream, HIGH_PRIORITY, RELIABLE_ORDERED, 0, source, false);
+	
+	if (newPlayer->hasRespawnPosition()) {
+		bitStream.Reset();
+		SetSpawnPositionPacket sp(newPlayer->getRespawnPosition());
+		sp.write(&bitStream);
+		rakPeer->Send(&bitStream, HIGH_PRIORITY, RELIABLE_ORDERED, 0, source, false);
+	}
+
+	bitStream.Reset();
+	SendInventoryPacket(newPlayer, false).write(&bitStream);
+	rakPeer->Send(&bitStream, HIGH_PRIORITY, RELIABLE_ORDERED, 0, source, false);
+
+
 	// Additional packets
 	// * set spawn
 	/*

src/network/packet/SendInventoryPacket.h

@@ -3,13 +3,13 @@
 
 #include "../Packet.h"
 #include "world/entity/player/Inventory.h"
+#include "world/inventory/FillingContainer.h"
+#include <array>
 
 class SendInventoryPacket: public Packet
 {
 public:
-	SendInventoryPacket()
-	{
-	}
+	SendInventoryPacket() {}
 
 	SendInventoryPacket(Player* player, bool dropItems)
 	:	entityId(player->entityId),
@@ -22,10 +22,15 @@ public:
 			ItemInstance* item = inv->getItem(i);
 			items.push_back(item? *item : ItemInstance());
         }
+
         for (int i = 0; i < NumArmorItems; ++i) {
             ItemInstance* item = player->getArmor(i);
             items.push_back(item? *item : ItemInstance());
         }
+
+		for (int i = 0; i < inv->numLinkedSlots; ++i) {
+            linkedSlot[i] = inv->linkedSlots[i];
+        }
 	}
 
 	void write(RakNet::BitStream* bitStream)
@@ -40,6 +45,13 @@ public:
         // Armor
         for (int i = 0; i < NumArmorItems; ++i)
             PacketUtil::writeItemInstance(items[i + numItems], bitStream);
+
+		int lSlots = Inventory::MAX_SELECTION_SIZE;
+
+		// Linked slots
+		bitStream->Write(lSlots);
+		for (int i = 0; i < lSlots; ++i)
+            bitStream->Write(linkedSlot[i]);
 	}
 
 	void read(RakNet::BitStream* bitStream)
@@ -51,6 +63,12 @@ public:
         // Inventory, Armor
 		for (int i = 0; i < numItems + NumArmorItems; ++i)
 			items.push_back(PacketUtil::readItemInstance(bitStream));
+
+		// Linked slots
+		int lSlots = 0;
+		bitStream->Read(lSlots);
+		for (int i = 0; i < lSlots; ++i)
+            bitStream->Read(linkedSlot[i]);
 	}
 
 	void handle(const RakNet::RakNetGUID& source, NetEventCallback* callback)
@@ -63,6 +81,8 @@ public:
 	short numItems;
 	unsigned char extra;
 
+	std::array<FillingContainer::LinkedSlot, Inventory::MAX_SELECTION_SIZE> linkedSlot;
+
 	static const int ExtraDrop = 1;
     static const int NumArmorItems = 4;
 };

src/world/level/storage/ExternalFileLevelStorage.cpp

@@ -1,3 +1,6 @@
+#include <cstddef>
+#include <fstream>
+#include <ios>
 #if !defined(DEMO_MODE) && !defined(APPLE_DEMO_PROMOTION)
 
 #include "LevelData.h"
@@ -88,6 +91,9 @@ ExternalFileLevelStorage::ExternalFileLevelStorage(const std::string& levelId, c
 {
 	createFolderIfNotExists(levelPath.c_str());
 
+	std::string playerFolder = levelPath + "/players";
+	createFolderIfNotExists(playerFolder.c_str());
+
 	std::string datFileName   = levelPath + "/" + fnLevelDat;
 	std::string levelFileName = levelPath + "/" + fnPlayerDat;
 	loadedLevelData = new LevelData();
@@ -113,6 +119,7 @@ void ExternalFileLevelStorage::saveLevelData(LevelData& levelData, std::vector<P
 
 void ExternalFileLevelStorage::saveLevelData( const std::string& levelPath, LevelData& levelData, std::vector<Player*>* players )
 {
+	// @todo: completely rewrite
 	std::string directory = levelPath + "/";
     std::string tmpFile = directory + fnLevelDatNew;
     std::string datFile = directory + fnLevelDat;
@@ -141,6 +148,67 @@ void ExternalFileLevelStorage::saveLevelData( const std::string& levelPath, Leve
 
     // Remove the temporary save, if the rename didn't do it
     remove(tmpFile.c_str());
+
+	// Save players
+	// fuck mojang for that
+	if (!players || players->empty()) {
+		return;
+	}
+
+	for (auto& player : *players) {
+		if (player != NULL) {
+			savePlayer(*player, directory);
+		}
+	}
+}
+
+void ExternalFileLevelStorage::savePlayer(Player& player, const std::string& worldDir) {
+	std::string playerPath = worldDir + "/players/" + player.name + ".dat";
+
+	LOGI("Saving player %s to %s...\n", player.name.c_str(), playerPath.c_str());
+
+	RakNet::BitStream data;
+	RakDataOutput buf(data);
+	CompoundTag playerTag;
+	player.saveWithoutId(&playerTag);
+
+	NbtIo::write(&playerTag, &buf);
+
+	std::ofstream file(playerPath, std::ios::out | std::ios::binary);
+	file.write((const char*)data.GetData(), (size_t)data.GetNumberOfBytesUsed());
+}
+
+bool ExternalFileLevelStorage::loadPlayer(Player& player, const std::string& worldDir) {
+	std::string playerPath = worldDir + "/players/" + player.name + ".dat";
+
+	LOGI("Loading player %s from %s...\n", player.name.c_str(), playerPath.c_str());
+
+	std::ifstream file(playerPath, std::ios::in | std::ios::binary);
+	if (!file.is_open()) {
+		return false;
+	}
+
+	std::vector<uint8_t> data((std::istreambuf_iterator<char>(file)), std::istreambuf_iterator<char>());
+
+	RakNet::BitStream bitStream(data.data(), data.size(), false);
+	RakDataInput stream(bitStream);
+
+	CompoundTag* tag = NbtIo::read(&stream);
+	if (tag) {
+		player.load(tag);
+		tag->deleteChildren();
+		delete tag;
+	}
+
+	return true;
+}
+
+void ExternalFileLevelStorage::savePlayer(Player& player) {
+	ExternalFileLevelStorage::savePlayer(player, levelPath);
+}
+
+bool ExternalFileLevelStorage::loadPlayer(Player& player) {
+	return ExternalFileLevelStorage::loadPlayer(player, levelPath);
 }
 
 LevelData* ExternalFileLevelStorage::prepareLevel(Level* _level)

src/world/level/storage/ExternalFileLevelStorage.h

@@ -67,6 +67,19 @@ public:
 	void saveGame(Level* level);
     void saveAll(Level* level, std::vector<LevelChunk*>& levelChunks);
 
+	/**
+	 * @brief Save player to <world name>/player/<player name>.dat file
+	 */
+	static void savePlayer(Player& player, const std::string& worldDir);
+
+	/**
+	 * @brief Load player from <world name>/player/<player name>.dat file
+	 */
+	static bool loadPlayer(Player& player, const std::string& worldDir);
+
+	virtual void savePlayer(Player& player);
+	virtual bool loadPlayer(Player& player);
+
 	virtual void tick();
 	virtual void flush() {}
 private:

src/world/level/storage/LevelStorage.h

@@ -32,6 +32,9 @@ public:
 	virtual void saveGame(Level* level) {}
 	virtual void loadEntities(Level* level, LevelChunk* levelChunk) {}
 
+	virtual void savePlayer(Player& player) = 0;
+	virtual bool loadPlayer(Player& player) = 0;
+
 	//void checkSession() throws LevelConflictException;
 	//PlayerIO getPlayerIO();
 };