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EarthcomputerEarthcomputer
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Client virtual worlds, first draft
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13 files changed

+810
-2
lines changed

13 files changed

+810
-2
lines changed

‎src/main/java/net/earthcomputer/clientcommands/ClientCommandsMod.java‎

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@@ -8,6 +8,7 @@
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import net.earthcomputer.clientcommands.command.CommandCGive;
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import net.earthcomputer.clientcommands.command.CommandCHelp;
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import net.earthcomputer.clientcommands.command.CommandCTime;
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import net.earthcomputer.clientcommands.command.CommandCVW;
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import net.earthcomputer.clientcommands.command.CommandCalc;
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import net.earthcomputer.clientcommands.command.CommandFind;
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import net.earthcomputer.clientcommands.command.CommandFindBlock;
@@ -61,6 +62,7 @@ private void registerCommands() {
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ClientCommandHandler.instance.registerCommand(new CommandTempRule());
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ClientCommandHandler.instance.registerCommand(new CommandCEnchant());
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ClientCommandHandler.instance.registerCommand(new CommandCTime());
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ClientCommandHandler.instance.registerCommand(new CommandCVW());
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}
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private void registerEventStuff() {

‎src/main/java/net/earthcomputer/clientcommands/command/CommandCVW.java‎

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package net.earthcomputer.clientcommands.command;
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import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
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import net.earthcomputer.clientcommands.cvw.ClientVirtualChunkLoader;
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import net.earthcomputer.clientcommands.cvw.ServerConnector;
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import net.earthcomputer.clientcommands.cvw.ServerConnectorCVW;
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import net.minecraft.client.Minecraft;
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import net.minecraft.client.multiplayer.WorldClient;
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import net.minecraft.command.CommandException;
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import net.minecraft.command.ICommandSender;
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import net.minecraft.command.WrongUsageException;
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import net.minecraft.nbt.NBTTagCompound;
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import net.minecraft.server.MinecraftServer;
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import net.minecraft.world.GameType;
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import net.minecraft.world.WorldSettings;
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public class CommandCVW extends ClientCommandBase {
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@Override
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public String getName() {
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return "cvw";
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}
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@Override
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public String getUsage(ICommandSender sender) {
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return "commands.cvw.usage";
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}
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@Override
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public void execute(MinecraftServer server, ICommandSender sender, String[] args) throws CommandException {
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if (args.length < 1) {
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throw new WrongUsageException(getUsage(sender));
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}
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switch (args[0]) {
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case "stop":
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ServerConnector connector = ServerConnector.forCurrentServer();
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if (connector instanceof ServerConnectorCVW) {
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connector.onDisconnectButtonPressed();
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} else {
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throw new CommandException("commands.cvw.stop.notRunning");
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}
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break;
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case "start":
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GameType gameType;
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if (args.length < 2) {
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gameType = GameType.CREATIVE;
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} else {
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gameType = GameType.parseGameTypeWithDefault(args[1], GameType.NOT_SET);
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if (gameType == GameType.NOT_SET) {
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gameType = WorldSettings.getGameTypeById(parseInt(args[1], 0, GameType.values().length - 2));
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}
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}
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startCVW(gameType);
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break;
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default:
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throw new WrongUsageException(getUsage(sender));
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}
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}
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private static void startCVW(GameType gameType) {
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WorldClient world = Minecraft.getMinecraft().world;
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Long2ObjectMap<NBTTagCompound> chunks = ClientVirtualChunkLoader.generateChunkMap(world,
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world.getChunkProvider());
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NBTTagCompound playerTag = Minecraft.getMinecraft().player.writeToNBT(new NBTTagCompound());
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ServerConnector oldServer = ServerConnector.forCurrentServer();
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oldServer.disconnect();
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ServerConnectorCVW newServer = new ServerConnectorCVW(world.provider.getDimension(), gameType, oldServer,
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chunks, playerTag);
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newServer.connect();
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}
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}

‎src/main/java/net/earthcomputer/clientcommands/cvw/ClientVirtualChunkGenerator.java‎

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package net.earthcomputer.clientcommands.cvw;
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import java.util.List;
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import net.minecraft.entity.EnumCreatureType;
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import net.minecraft.util.math.BlockPos;
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import net.minecraft.world.World;
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import net.minecraft.world.biome.Biome.SpawnListEntry;
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import net.minecraft.world.chunk.Chunk;
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import net.minecraft.world.chunk.EmptyChunk;
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import net.minecraft.world.gen.IChunkGenerator;
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public class ClientVirtualChunkGenerator implements IChunkGenerator {
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private World world;
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private IChunkGenerator proxy;
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public ClientVirtualChunkGenerator(World world, IChunkGenerator proxy) {
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this.world = world;
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this.proxy = proxy;
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}
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@Override
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public Chunk generateChunk(int x, int z) {
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return new EmptyChunk(world, x, z);
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}
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@Override
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public void populate(int x, int z) {
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}
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@Override
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public boolean generateStructures(Chunk chunkIn, int x, int z) {
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return false;
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}
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@Override
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public List<SpawnListEntry> getPossibleCreatures(EnumCreatureType creatureType, BlockPos pos) {
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return proxy.getPossibleCreatures(creatureType, pos);
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}
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@Override
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public BlockPos getNearestStructurePos(World worldIn, String structureName, BlockPos position,
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boolean findUnexplored) {
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return null;
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}
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@Override
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public void recreateStructures(Chunk chunkIn, int x, int z) {
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}
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@Override
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public boolean isInsideStructure(World worldIn, String structureName, BlockPos pos) {
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return false;
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}
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}

‎src/main/java/net/earthcomputer/clientcommands/cvw/ClientVirtualChunkLoader.java‎

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package net.earthcomputer.clientcommands.cvw;
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import java.io.IOException;
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import java.lang.reflect.Method;
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import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
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import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
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import net.minecraft.client.multiplayer.ChunkProviderClient;
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import net.minecraft.client.multiplayer.WorldClient;
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import net.minecraft.nbt.NBTTagCompound;
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import net.minecraft.util.math.ChunkPos;
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import net.minecraft.world.MinecraftException;
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import net.minecraft.world.World;
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import net.minecraft.world.chunk.Chunk;
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import net.minecraft.world.chunk.storage.AnvilChunkLoader;
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import net.minecraft.world.chunk.storage.IChunkLoader;
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import net.minecraftforge.common.ForgeChunkManager;
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import net.minecraftforge.common.MinecraftForge;
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import net.minecraftforge.event.world.ChunkDataEvent;
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import net.minecraftforge.fml.common.FMLCommonHandler;
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import net.minecraftforge.fml.relauncher.ReflectionHelper;
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public class ClientVirtualChunkLoader implements IChunkLoader {
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private static final AnvilChunkLoader ANVIL_CHUNK_LOADER = new AnvilChunkLoader(null, null);
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private static final Method READ_FROM_NBT_METHOD = ReflectionHelper.findMethod(AnvilChunkLoader.class,
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"checkedReadChunkFromNBT__Async", "checkedReadChunkFromNBT__Async", World.class, int.class, int.class,
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NBTTagCompound.class);
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private Long2ObjectMap<NBTTagCompound> chunks;
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public ClientVirtualChunkLoader(Long2ObjectMap<NBTTagCompound> chunks) {
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this.chunks = chunks;
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}
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public static Long2ObjectMap<NBTTagCompound> generateChunkMap(WorldClient world,
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ChunkProviderClient chunkProvider) {
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Long2ObjectMap<NBTTagCompound> chunkMap = new Long2ObjectOpenHashMap<>();
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chunkProvider.chunkMapping.forEach((pos, chunk) -> {
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NBTTagCompound nbt = new NBTTagCompound();
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NBTTagCompound levelTag = new NBTTagCompound();
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nbt.setTag("Level", levelTag);
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nbt.setInteger("DataVersion", 1343);
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FMLCommonHandler.instance().getDataFixer().writeVersionData(nbt);
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ANVIL_CHUNK_LOADER.writeChunkToNBT(chunk, world, levelTag);
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ForgeChunkManager.storeChunkNBT(chunk, levelTag);
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MinecraftForge.EVENT_BUS.post(new ChunkDataEvent.Save(chunk, nbt));
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chunkMap.put(pos, nbt);
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});
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return chunkMap;
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}
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@Override
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public Chunk loadChunk(World world, int x, int z) throws IOException {
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NBTTagCompound nbt = chunks.get(ChunkPos.asLong(x, z));
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if (nbt == null) {
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return null;
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}
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Object[] ret;
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try {
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ret = (Object[]) READ_FROM_NBT_METHOD.invoke(ANVIL_CHUNK_LOADER, world, x, z, nbt);
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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if (ret != null) {
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Chunk chunk = (Chunk) ret[0];
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nbt = (NBTTagCompound) ret[1];
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ANVIL_CHUNK_LOADER.loadEntities(world, nbt.getCompoundTag("Level"), chunk);
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return chunk;
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}
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return null;
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}
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@Override
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public void saveChunk(World worldIn, Chunk chunkIn) throws MinecraftException, IOException {
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}
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@Override
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public void saveExtraChunkData(World worldIn, Chunk chunkIn) throws IOException {
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}
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@Override
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public void chunkTick() {
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}
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@Override
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public void flush() {
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}
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@Override
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public boolean isChunkGeneratedAt(int x, int z) {
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return chunks.containsKey(ChunkPos.asLong(x, z));
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}
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}

‎src/main/java/net/earthcomputer/clientcommands/cvw/ClientVirtualChunkProvider.java‎

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package net.earthcomputer.clientcommands.cvw;
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import net.minecraft.world.chunk.storage.IChunkLoader;
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import net.minecraft.world.gen.ChunkProviderServer;
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import net.minecraft.world.gen.IChunkGenerator;
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public class ClientVirtualChunkProvider extends ChunkProviderServer {
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public ClientVirtualChunkProvider(ClientVirtualWorld world, IChunkLoader chunkLoader,
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IChunkGenerator chunkGenerator) {
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super(world, chunkLoader, chunkGenerator);
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}
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@Override
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public boolean tick() {
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world.disableLevelSaving = false;
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boolean ret = super.tick();
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world.disableLevelSaving = true;
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return ret;
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}
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}

‎src/main/java/net/earthcomputer/clientcommands/cvw/ClientVirtualSaveHandler.java‎

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package net.earthcomputer.clientcommands.cvw;
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import java.io.File;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.UUID;
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import net.minecraft.client.Minecraft;
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import net.minecraft.entity.player.EntityPlayer;
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import net.minecraft.nbt.NBTTagCompound;
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import net.minecraft.server.MinecraftServer;
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import net.minecraft.util.ResourceLocation;
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import net.minecraft.world.MinecraftException;
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import net.minecraft.world.WorldProvider;
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import net.minecraft.world.WorldServerDemo;
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import net.minecraft.world.chunk.storage.IChunkLoader;
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import net.minecraft.world.gen.structure.template.TemplateManager;
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import net.minecraft.world.storage.IPlayerFileData;
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import net.minecraft.world.storage.SaveHandler;
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import net.minecraft.world.storage.WorldInfo;
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import net.minecraftforge.event.ForgeEventFactory;
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public class ClientVirtualSaveHandler extends SaveHandler {
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public static final File DUMMY_DIR = new File(Minecraft.getMinecraft().mcDataDir, "cvwWorldDir");
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static {
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DUMMY_DIR.mkdirs();
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DUMMY_DIR.deleteOnExit();
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}
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public ClientVirtualSaveHandler() {
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super(DUMMY_DIR, "CVW", false, Minecraft.getMinecraft().getDataFixer());
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}
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@Override
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public WorldInfo loadWorldInfo() {
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return new WorldInfo(WorldServerDemo.DEMO_WORLD_SETTINGS, "CVW");
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}
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@Override
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public void checkSessionLock() throws MinecraftException {
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}
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@Override
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public IChunkLoader getChunkLoader(WorldProvider provider) {
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throw new UnsupportedOperationException("This should only be called on world creation");
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}
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@Override
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public void saveWorldInfoWithPlayer(WorldInfo worldInformation, NBTTagCompound tagCompound) {
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}
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@Override
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public void saveWorldInfo(WorldInfo worldInformation) {
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}
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@Override
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public IPlayerFileData getPlayerNBTManager() {
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return this;
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}
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@Override
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public void flush() {
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}
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@Override
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public File getWorldDirectory() {
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return DUMMY_DIR;
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}
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@Override
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public File getMapFileFromName(String mapName) {
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return new File(DUMMY_DIR, mapName + ".dat");
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}
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@Override
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public TemplateManager getStructureTemplateManager() {
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return new TemplateManager(null, Minecraft.getMinecraft().getDataFixer()) {
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@Override
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public boolean readTemplate(ResourceLocation server) {
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return false;
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}
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@Override
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public boolean writeTemplate(MinecraftServer server, ResourceLocation id) {
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return false;
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}
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};
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}
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private Map<UUID, NBTTagCompound> playerData = new HashMap<>();
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@Override
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public void writePlayerData(EntityPlayer player) {
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playerData.put(player.getUniqueID(), player.writeToNBT(new NBTTagCompound()));
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ForgeEventFactory.firePlayerSavingEvent(player, new File(DUMMY_DIR, "players"),
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player.getUniqueID().toString());
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}
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@Override
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public NBTTagCompound readPlayerData(EntityPlayer player) {
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NBTTagCompound nbt = playerData.get(player.getUniqueID());
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if (nbt != null) {
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player.readFromNBT(nbt);
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}
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ForgeEventFactory.firePlayerLoadingEvent(player, new File(DUMMY_DIR, "players"),
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player.getUniqueID().toString());
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return nbt;
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}
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@Override
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public String[] getAvailablePlayerDat() {
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return playerData.keySet().stream().map(UUID::toString).toArray(String[]::new);
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}
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}

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