ydeng/islandsurvivalcraft
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Revert to "Island world chunk generator now pre-generates island values."

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This reverts commit e40bf74cb8.
This commit is contained in:
Harrison Deng 2020-04-29 19:14:20 -05:00
parent a119e6f596
commit c6fd9a833c
2 changed files with 42 additions and 54 deletions
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26
src/main/java/ca/recrown/islandsurvivalcraft/caching/Cache.java
View File

@ -1,13 +1,17 @@
package ca.recrown.islandsurvivalcraft.caching;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.ReentrantLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock.ReadLock;
import java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock;
public class Cache<K, V> {
private final int maxSize;
private final ConcurrentHashMap<K, CacheValue<K, V>> data;
private final UsageStack<K, V> usage = new UsageStack<>();
private final ReentrantLock lock = new ReentrantLock();
private final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
private final WriteLock writeLock = lock.writeLock();
private final ReadLock readLock = lock.readLock();
public Cache(int maxSize) {
data = new ConcurrentHashMap<>(maxSize + 1, 0.75f, 6);
@ -29,7 +33,7 @@ public class Cache<K, V> {
if (data.containsKey(key)) {
data.get(key).value = value;
} else {
lock.lock();
writeLock.lock();
try {
CacheValue<K, V> val = new CacheValue<>();
val.key = key;
@ -40,7 +44,7 @@ public class Cache<K, V> {
data.remove(usage.pop().key);
}
} finally {
lock.unlock();
writeLock.unlock();
}
}
}
@ -53,9 +57,15 @@ public class Cache<K, V> {
* @return the value associated to the key.
*/
public V get(K key) {
CacheValue<K, V> value = data.get(key);
if (value == null) return null;
readLock.lock();
CacheValue<K, V> value = null;
try {
if (!data.containsKey(key)) return null;
value = data.get(key);
usage.tryMoveToTop(value);
} finally {
readLock.unlock();
}
return value.value;
}
@ -63,12 +73,12 @@ public class Cache<K, V> {
* Clears the cache of all values.
*/
public void clearCache() {
lock.lock();
writeLock.lock();
try {
data.clear();
usage.clear();
} finally {
lock.unlock();
writeLock.unlock();
}
}
}

60
src/main/java/ca/recrown/islandsurvivalcraft/world/generation/IslandWorldChunkGenerator.java
View File

@ -4,6 +4,7 @@ import java.util.LinkedList;
import java.util.Random;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import org.bukkit.Chunk;
@ -27,83 +28,60 @@ public class IslandWorldChunkGenerator extends ChunkGenerator implements Listene
private final Cache<Point2, Double> blockValueCache = new Cache<>(102400);
private final Cache<Point2, Biome[]> biomeCache = new Cache<>(102400);
private final Cache<Point2, Boolean> chunkExistenceCache = new Cache<>(16384);
private final BiomeSelector biomeSelector = new BiomeSelector();
private final ExecutorService executor = Utilities.ISC_EXECUTOR;
private volatile World currentWorld;
public IslandWorldChunkGenerator() {
biomeSelector.initialize();
}
@Override
public ChunkData generateChunkData(World world, Random random, int chunkX, int chunkZ, BiomeGrid biomeGrid) {
this.currentWorld = world;
IslandWorldMapper mapper = new IslandWorldMapper(random, blockValueCache);
TemperatureMapGenerator temperatureMapGenerator = new TemperatureMapGenerator(world.getSeed());
WorldHeightShader heightShader = new WorldHeightShader(world.getSeed(), mapper, world.getSeaLevel(), world.getMaxHeight(), 3);
BiomeSelector biomeSelector = new BiomeSelector(random);
biomeSelector.initialize();
WorldHeightShader heightShader = new WorldHeightShader(world.getSeed(), mapper, world.getSeaLevel(),
world.getMaxHeight(), 3);
BiomeGenerator biomeGenerator = new UniBiomeIslandGenerator();
int maxHeight = world.getMaxHeight();
LinkedList<Future<Boolean>> tasks = new LinkedList<>();
ChunkData chunkData = createChunkData(world);
Future<Boolean> preLoader = executor.submit(() -> {
for (int x = 0; x < Utilities.CHUNK_SIZE; x++) {
for (int z = 0; z < Utilities.CHUNK_SIZE; z++) {
if (Thread.currentThread().isInterrupted()) return false;
mapper.getWorldBlockValue(Utilities.CHUNK_SIZE * chunkX + x, Utilities.CHUNK_SIZE * chunkZ + z);
}
}
return true;
});
Biome[][] biomes = new Biome[Utilities.CHUNK_SIZE][Utilities.CHUNK_SIZE];
for (int x = 0; x < Utilities.CHUNK_SIZE; x++) {
for (int z = 0; z < Utilities.CHUNK_SIZE; z++) {
final int desX = x;
final int desZ = z;
if (biomes[desX][desZ] == null) {
biomeGenerator.generateBiomeColumn(biomes, world, chunkX, chunkZ, desX, desZ, mapper, biomeSelector,
for (int localX = 0; localX < Utilities.CHUNK_SIZE; localX++) {
for (int localZ = 0; localZ < Utilities.CHUNK_SIZE; localZ++) {
if (biomes[localX][localZ] == null) {
biomeGenerator.generateBiomeColumn(biomes, world, chunkX, chunkZ, localX, localZ, mapper, biomeSelector,
temperatureMapGenerator, biomeCache, chunkExistenceCache);
}
if (biomes[localX][localZ] == null) throw new IllegalStateException("Biome was null.");
if (biomes[desX][desZ] == null) throw new IllegalStateException("Biome was null.");
final int biomeX = localX;
final int biomeZ = localZ;
tasks.add(executor.submit(() -> {
for (int y = 0; y < maxHeight; y++) {
biomeGrid.setBiome(desX, y, desZ, biomes[desX][desZ]);
biomeGrid.setBiome(biomeX, y, biomeZ, biomes[biomeX][biomeZ]);
}
return true;
}));
final int worldX = Utilities.CHUNK_SIZE * chunkX + desX;
final int worldZ = Utilities.CHUNK_SIZE * chunkZ + desZ;
int height = heightShader.getAltitude(worldX, worldZ, biomes[desX][desZ]);
chunkData.setRegion(desX, 1, desZ, desX + 1, height, desZ + 1, Material.DIAMOND_BLOCK);
final int worldX = 16 * chunkX + localX;
final int worldZ = 16 * chunkZ + localZ;
int height = heightShader.getAltitude(worldX, worldZ, biomes[localX][localZ]);
chunkData.setRegion(localX, 1, localZ, localX + 1, height, localZ + 1, Material.DIAMOND_BLOCK);
}
}
chunkData.setRegion(0, 0, 0, 16, 1, 16, Material.BEDROCK);
preLoader.cancel(true);
try {
while (!tasks.isEmpty()) {
try {
tasks.poll().get();
}
} catch (ExecutionException | InterruptedException e) {
e.printStackTrace();
throw new IllegalStateException(e.getCause().getMessage());
}
}
return chunkData;
}
@Override
public boolean canSpawn(World world, int x, int z) {
return super.canSpawn(world, x, z);
}
@Override
public boolean isParallelCapable() {
return true;
}
@EventHandler(priority = EventPriority.MONITOR)
public void onChunkLoaded(ChunkLoadEvent event) {
if (event.isNewChunk()) {