package net.minecraftforge.common;
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.BitSet;
import java.util.Hashtable;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.concurrent.ConcurrentMap;
import org.apache.logging.log4j.Level;
import com.google.common.collect.HashMultiset;
import com.google.common.collect.Lists;
import com.google.common.collect.MapMaker;
import com.google.common.collect.Multiset;
import cpw.mods.fml.common.FMLCommonHandler;
import cpw.mods.fml.common.FMLLog;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.server.MinecraftServer;
import net.minecraft.world.MinecraftException;
import net.minecraft.world.World;
import net.minecraft.world.WorldManager;
import net.minecraft.world.WorldProvider;
import net.minecraft.world.WorldProviderEnd;
import net.minecraft.world.WorldProviderHell;
import net.minecraft.world.WorldProviderSurface;
import net.minecraft.world.WorldServer;
import net.minecraft.world.WorldServerMulti;
import net.minecraft.world.WorldSettings;
import net.minecraft.world.storage.ISaveHandler;
import net.minecraft.world.storage.SaveHandler;
import net.minecraftforge.event.world.WorldEvent;
public class DimensionManager
{
private static Hashtable<Integer, Class<? extends WorldProvider>> providers = new Hashtable<Integer, Class<? extends WorldProvider>>();
private static Hashtable<Integer, Boolean> spawnSettings = new Hashtable<Integer, Boolean>();
private static Hashtable<Integer, WorldServer> worlds = new Hashtable<Integer, WorldServer>();
private static boolean hasInit = false;
private static Hashtable<Integer, Integer> dimensions = new Hashtable<Integer, Integer>();
private static ArrayList<Integer> unloadQueue = new ArrayList<Integer>();
private static BitSet dimensionMap = new BitSet(Long.SIZE << 4);
private static ConcurrentMap<World, World> weakWorldMap = new MapMaker().weakKeys().weakValues().<World,World>makeMap();
private static Multiset<Integer> leakedWorlds = HashMultiset.create();
public static boolean registerProviderType(int id, Class<? extends WorldProvider> provider, boolean keepLoaded)
{
if (providers.containsKey(id))
{
return false;
}
providers.put(id, provider);
spawnSettings.put(id, keepLoaded);
return true;
}
/**
* Unregisters a Provider type, and returns a array of all dimensions that are
* registered to this provider type.
* If the return size is greater then 0, it is required that the caller either
* change those dimensions's registered type, or replace this type before the
* world is attempted to load, else the loader will throw an exception.
*
* @param id The provider type ID to unreigster
* @return An array containing all dimension IDs still registered to this provider type.
*/
public static int[] unregisterProviderType(int id)
{
if (!providers.containsKey(id))
{
return new int[0];
}
providers.remove(id);
spawnSettings.remove(id);
int[] ret = new int[dimensions.size()];
int x = 0;
for (Map.Entry<Integer, Integer> ent : dimensions.entrySet())
{
if (ent.getValue() == id)
{
ret[x++] = ent.getKey();
}
}
return Arrays.copyOf(ret, x);
}
public static void init()
{
if (hasInit)
{
return;
}
hasInit = true;
registerProviderType( 0, WorldProviderSurface.class, true);
registerProviderType(-1, WorldProviderHell.class, true);
registerProviderType( 1, WorldProviderEnd.class, false);
registerDimension( 0, 0);
registerDimension(-1, -1);
registerDimension( 1, 1);
}
public static void registerDimension(int id, int providerType)
{
if (!providers.containsKey(providerType))
{
throw new IllegalArgumentException(String.format("Failed to register dimension for id %d, provider type %d does not exist", id, providerType));
}
if (dimensions.containsKey(id))
{
throw new IllegalArgumentException(String.format("Failed to register dimension for id %d, One is already registered", id));
}
dimensions.put(id, providerType);
if (id >= 0)
{
dimensionMap.set(id);
}
}
/**
* For unregistering a dimension when the save is changed (disconnected from a server or loaded a new save
*/
public static void unregisterDimension(int id)
{
if (!dimensions.containsKey(id))
{
throw new IllegalArgumentException(String.format("Failed to unregister dimension for id %d; No provider registered", id));
}
dimensions.remove(id);
}
public static boolean isDimensionRegistered(int dim)
{
return dimensions.containsKey(dim);
}
public static int getProviderType(int dim)
{
if (!dimensions.containsKey(dim))
{
throw new IllegalArgumentException(String.format("Could not get provider type for dimension %d, does not exist", dim));
}
return dimensions.get(dim);
}
public static WorldProvider getProvider(int dim)
{
return getWorld(dim).provider;
}
public static Integer[] getIDs(boolean check)
{
if (check)
{
List<World> allWorlds = Lists.newArrayList(weakWorldMap.keySet());
allWorlds.removeAll(worlds.values());
for (ListIterator<World> li = allWorlds.listIterator(); li.hasNext(); )
{
World w = li.next();
leakedWorlds.add(System.identityHashCode(w));
}
for (World w : allWorlds)
{
int leakCount = leakedWorlds.count(System.identityHashCode(w));
if (leakCount == 5)
{
FMLLog.fine("The world %x (%s) may have leaked: first encounter (5 occurences).\n", System.identityHashCode(w), w.getWorldInfo().getWorldName());
}
else if (leakCount % 5 == 0)
{
FMLLog.fine("The world %x (%s) may have leaked: seen %d times.\n", System.identityHashCode(w), w.getWorldInfo().getWorldName(), leakCount);
}
}
}
return getIDs();
}
public static Integer[] getIDs()
{
return worlds.keySet().toArray(new Integer[worlds.size()]); //Only loaded dims, since usually used to cycle through loaded worlds
}
public static void setWorld(int id, WorldServer world)
{
if (world != null)
{
worlds.put(id, world);
weakWorldMap.put(world, world);
MinecraftServer.getServer().worldTickTimes.put(id, new long[100]);
FMLLog.info("Loading dimension %d (%s) (%s)", id, world.getWorldInfo().getWorldName(), world.func_73046_m());
}
else
{
worlds.remove(id);
MinecraftServer.getServer().worldTickTimes.remove(id);
FMLLog.info("Unloading dimension %d", id);
}
ArrayList<WorldServer> tmp = new ArrayList<WorldServer>();
if (worlds.get( 0) != null)
tmp.add(worlds.get( 0));
if (worlds.get(-1) != null)
tmp.add(worlds.get(-1));
if (worlds.get( 1) != null)
tmp.add(worlds.get( 1));
for (Entry<Integer, WorldServer> entry : worlds.entrySet())
{
int dim = entry.getKey();
if (dim >= -1 && dim <= 1)
{
continue;
}
tmp.add(entry.getValue());
}
MinecraftServer.getServer().worldServers = tmp.toArray(new WorldServer[tmp.size()]);
}
public static void initDimension(int dim) {
WorldServer overworld = getWorld(0);
if (overworld == null)
{
throw new RuntimeException("Cannot Hotload Dim: Overworld is not Loaded!");
}
try
{
DimensionManager.getProviderType(dim);
}
catch (Exception e)
{
System.err.println("Cannot Hotload Dim: " + e.getMessage());
return; // If a provider hasn't been registered then we can't hotload the dim
}
MinecraftServer mcServer = overworld.func_73046_m();
ISaveHandler savehandler = overworld.getSaveHandler();
WorldSettings worldSettings = new WorldSettings(overworld.getWorldInfo());
WorldServer world = (dim == 0 ? overworld : new WorldServerMulti(mcServer, savehandler, overworld.getWorldInfo().getWorldName(), dim, worldSettings, overworld, mcServer.theProfiler));
world.addWorldAccess(new WorldManager(mcServer, world));
MinecraftForge.EVENT_BUS.post(new WorldEvent.Load(world));
if (!mcServer.isSinglePlayer())
{
world.getWorldInfo().setGameType(mcServer.getGameType());
}
mcServer.func_147139_a(mcServer.func_147135_j());
}
public static WorldServer getWorld(int id)
{
return worlds.get(id);
}
public static WorldServer[] getWorlds()
{
return worlds.values().toArray(new WorldServer[worlds.size()]);
}
public static boolean shouldLoadSpawn(int dim)
{
int id = getProviderType(dim);
return spawnSettings.containsKey(id) && spawnSettings.get(id);
}
static
{
init();
}
/**
* Not public API: used internally to get dimensions that should load at
* server startup
*/
public static Integer[] getStaticDimensionIDs()
{
return dimensions.keySet().toArray(new Integer[dimensions.keySet().size()]);
}
public static WorldProvider createProviderFor(int dim)
{
try
{
if (dimensions.containsKey(dim))
{
WorldProvider provider = providers.get(getProviderType(dim)).newInstance();
provider.setDimension(dim);
return provider;
}
else
{
throw new RuntimeException(String.format("No WorldProvider bound for dimension %d", dim)); //It's going to crash anyway at this point. Might as well be informative
}
}
catch (Exception e)
{
FMLCommonHandler.instance().getFMLLogger().log(Level.ERROR, String.format("An error occured trying to create an instance of WorldProvider %d (%s)",
dim, providers.get(getProviderType(dim)).getSimpleName()),e);
throw new RuntimeException(e);
}
}
public static void unloadWorld(int id) {
unloadQueue.add(id);
}
/*
* To be called by the server at the appropriate time, do not call from mod code.
*/
public static void unloadWorlds(Hashtable<Integer, long[]> worldTickTimes) {
for (int id : unloadQueue) {
WorldServer w = worlds.get(id);
try {
if (w != null)
{
w.saveAllChunks(true, null);
}
else
{
FMLLog.warning("Unexpected world unload - world %d is already unloaded", id);
}
} catch (MinecraftException e) {
e.printStackTrace();
}
finally
{
if (w != null)
{
MinecraftForge.EVENT_BUS.post(new WorldEvent.Unload(w));
w.flush();
setWorld(id, null);
}
}
}
unloadQueue.clear();
}
/**
* Return the next free dimension ID. Note: you are not guaranteed a contiguous
* block of free ids. Always call for each individual ID you wish to get.
* @return the next free dimension ID
*/
public static int getNextFreeDimId() {
int next = 0;
while (true)
{
next = dimensionMap.nextClearBit(next);
if (dimensions.containsKey(next))
{
dimensionMap.set(next);
}
else
{
return next;
}
}
}
public static NBTTagCompound saveDimensionDataMap()
{
int[] data = new int[(dimensionMap.length() + Integer.SIZE - 1 )/ Integer.SIZE];
NBTTagCompound dimMap = new NBTTagCompound();
for (int i = 0; i < data.length; i++)
{
int val = 0;
for (int j = 0; j < Integer.SIZE; j++)
{
val |= dimensionMap.get(i * Integer.SIZE + j) ? (1 << j) : 0;
}
data[i] = val;
}
dimMap.setIntArray("DimensionArray", data);
return dimMap;
}
public static void loadDimensionDataMap(NBTTagCompound compoundTag)
{
dimensionMap.clear();
if (compoundTag == null)
{
for (Integer id : dimensions.keySet())
{
if (id >= 0)
{
dimensionMap.set(id);
}
}
}
else
{
int[] intArray = compoundTag.getIntArray("DimensionArray");
for (int i = 0; i < intArray.length; i++)
{
for (int j = 0; j < Integer.SIZE; j++)
{
dimensionMap.set(i * Integer.SIZE + j, (intArray[i] & (1 << j)) != 0);
}
}
}
}
/**
* Return the current root directory for the world save. Accesses getSaveHandler from the overworld
* @return the root directory of the save
*/
public static File getCurrentSaveRootDirectory()
{
if (DimensionManager.getWorld(0) != null)
{
return ((SaveHandler)DimensionManager.getWorld(0).getSaveHandler()).getWorldDirectory();
}
else if (MinecraftServer.getServer() != null)
{
MinecraftServer srv = MinecraftServer.getServer();
SaveHandler saveHandler = (SaveHandler) srv.getActiveAnvilConverter().getSaveLoader(srv.getFolderName(), false);
return saveHandler.getWorldDirectory();
}
else
{
return null;
}
}
}