Paper/src/main/java/org/bukkit/craftbukkit/CraftChunkSnapshot.java

174 lines
4.6 KiB
Java

package org.bukkit.craftbukkit;
import org.bukkit.ChunkSnapshot;
import org.bukkit.block.Biome;
import org.bukkit.craftbukkit.block.CraftBlock;
import net.minecraft.server.BiomeBase;
/**
* Represents a static, thread-safe snapshot of chunk of blocks
* Purpose is to allow clean, efficient copy of a chunk data to be made, and then handed off for processing in another thread (e.g. map rendering)
*/
public class CraftChunkSnapshot implements ChunkSnapshot {
private final int x, z;
private final String worldname;
private final byte[] buf; // Flat buffer in uncompressed chunk file format
private final byte[] hmap; // Height map
private final long captureFulltime;
private final BiomeBase[] biome;
private final double[] biomeTemp;
private final double[] biomeRain;
private static final int BLOCKDATA_OFF = 32768;
private static final int BLOCKLIGHT_OFF = BLOCKDATA_OFF + 16384;
private static final int SKYLIGHT_OFF = BLOCKLIGHT_OFF + 16384;
/**
* Constructor
*/
CraftChunkSnapshot(int x, int z, String wname, long wtime, byte[] buf, byte[] hmap, BiomeBase[] biome, double[] biomeTemp, double[] biomeRain) {
this.x = x;
this.z = z;
this.worldname = wname;
this.captureFulltime = wtime;
this.buf = buf;
this.hmap = hmap;
this.biome = biome;
this.biomeTemp = biomeTemp;
this.biomeRain = biomeRain;
}
/**
* Gets the X-coordinate of this chunk
*
* @return X-coordinate
*/
public int getX() {
return x;
}
/**
* Gets the Z-coordinate of this chunk
*
* @return Z-coordinate
*/
public int getZ() {
return z;
}
/**
* Gets name of the world containing this chunk
*
* @return Parent World Name
*/
public String getWorldName() {
return worldname;
}
/**
* Get block type for block at corresponding coordinate in the chunk
*
* @param x 0-15
* @param y 0-127
* @param z 0-15
* @return 0-255
*/
public int getBlockTypeId(int x, int y, int z) {
return buf[x << 11 | z << 7 | y] & 255;
}
/**
* Get block data for block at corresponding coordinate in the chunk
*
* @param x 0-15
* @param y 0-127
* @param z 0-15
* @return 0-15
*/
public int getBlockData(int x, int y, int z) {
int off = ((x << 10) | (z << 6) | (y >> 1)) + BLOCKDATA_OFF;
return ((y & 1) == 0) ? (buf[off] & 0xF) : ((buf[off] >> 4) & 0xF);
}
/**
* Get sky light level for block at corresponding coordinate in the chunk
*
* @param x 0-15
* @param y 0-127
* @param z 0-15
* @return 0-15
*/
public int getBlockSkyLight(int x, int y, int z) {
int off = ((x << 10) | (z << 6) | (y >> 1)) + SKYLIGHT_OFF;
return ((y & 1) == 0) ? (buf[off] & 0xF) : ((buf[off] >> 4) & 0xF);
}
/**
* Get light level emitted by block at corresponding coordinate in the chunk
*
* @param x 0-15
* @param y 0-127
* @param z 0-15
* @return 0-15
*/
public int getBlockEmittedLight(int x, int y, int z) {
int off = ((x << 10) | (z << 6) | (y >> 1)) + BLOCKLIGHT_OFF;
return ((y & 1) == 0) ? (buf[off] & 0xF) : ((buf[off] >> 4) & 0xF);
}
/**
* Gets the highest non-air coordinate at the given coordinates
*
* @param x X-coordinate of the blocks
* @param z Z-coordinate of the blocks
* @return Y-coordinate of the highest non-air block
*/
public int getHighestBlockYAt(int x, int z) {
return hmap[z << 4 | x] & 255;
}
/**
* Get biome at given coordinates
*
* @param x X-coordinate
* @param z Z-coordinate
* @return Biome at given coordinate
*/
public Biome getBiome(int x, int z) {
return CraftBlock.biomeBaseToBiome(biome[z << 4 | x]);
}
/**
* Get raw biome temperature (0.0-1.0) at given coordinate
*
* @param x X-coordinate
* @param z Z-coordinate
* @return temperature at given coordinate
*/
public double getRawBiomeTemperature(int x, int z) {
return biomeTemp[z << 4 | x];
}
/**
* Get raw biome rainfall (0.0-1.0) at given coordinate
*
* @param x X-coordinate
* @param z Z-coordinate
* @return rainfall at given coordinate
*/
public double getRawBiomeRainfall(int x, int z) {
return biomeRain[z << 4 | x];
}
/**
* Get world full time when chunk snapshot was captured
* @return time in ticks
*/
public long getCaptureFullTime() {
return captureFulltime;
}
}