Add wrapper for MultiBlockChangeInfo

ProtocolLib/src/main/java/com/comphenix/protocol/events/PacketContainer.java

@@ -87,6 +87,7 @@ import com.comphenix.protocol.wrappers.EnumWrappers.ResourcePackStatus;
 import com.comphenix.protocol.wrappers.EnumWrappers.ScoreboardAction;
 import com.comphenix.protocol.wrappers.EnumWrappers.TitleAction;
 import com.comphenix.protocol.wrappers.EnumWrappers.WorldBorderAction;
+import com.comphenix.protocol.wrappers.MultiBlockChangeInfo;
 import com.comphenix.protocol.wrappers.PlayerInfoData;
 import com.comphenix.protocol.wrappers.WrappedAttribute;
 import com.comphenix.protocol.wrappers.WrappedBlockData;
@@ -459,11 +460,8 @@ public class PacketContainer implements Serializable {
 	
 	/**
 	 * Retrieves a read/write structure for chunk positions.
-	 * 
-	 * @deprecated ChunkPosition no longer exists.
 	 * @return A modifier for a ChunkPosition.
 	 */
-	@Deprecated
 	public StructureModifier<ChunkPosition> getPositionModifier() {
 		// Convert to and from the Bukkit wrapper
 		return structureModifier.withType(
@@ -616,14 +614,29 @@ public class PacketContainer implements Serializable {
 	 * Retrieves a read/write structure for BlockData in Minecraft 1.8.
 	 * <p>
 	 * This modifier will automatically marshall between WrappedBlockData and the
-	 * internal Minecraft BlockData.
+	 * internal Minecraft IBlockData.
 	 * @return A modifier for BlockData fields.
 	 */
 	public StructureModifier<WrappedBlockData> getBlockData() {
-		// Conver to and from our wrapper
+		// Convert to and from our wrapper
 		return structureModifier.<WrappedBlockData>withType(
 				MinecraftReflection.getIBlockDataClass(), BukkitConverters.getWrappedBlockDataConverter());
 	}
+
+	/**
+	 * Retrieves a read/write structure for MultiBlockChangeInfo arrays in Minecraft 1.8.
+	 * <p>
+	 * This modifier will automatically marshall between MultiBlockChangeInfo and the
+	 * internal Minecraft MultiBlockChangeInfo.
+	 * @return A modifier for BlockData fields.
+	 */
+	public StructureModifier<MultiBlockChangeInfo[]> getMultiBlockChangeInfoArrays() {
+		ChunkCoordIntPair chunk = getChunkCoordIntPairs().read(0);
+
+		// Convert to and from our wrapper
+		return structureModifier.<MultiBlockChangeInfo[]>withType(
+				MinecraftReflection.getMultiBlockChangeInfoArrayClass(), MultiBlockChangeInfo.getArrayConverter(chunk));
+	}
 	
 	/**
 	 * Retrieves a read/write structure for chat components in Minecraft 1.7.2.

ProtocolLib/src/main/java/com/comphenix/protocol/utility/MinecraftReflection.java

@@ -1924,13 +1924,19 @@ public class MinecraftReflection {
 	}
 
 	/**
-	 * Determine if the given object is an IBlockData.
-	 * @param obj - the given object.
-	 * @return TRUE if it is, FALSE otherwise.
+	 * Retrieve the MultiBlockChangeInfo class in 1.8.
+	 * @return The MultiBlockChangeInfo class
 	 */
-	public static boolean isIBlockData(Object obj) {
-		Class<?> clazz = getIBlockDataClass();
-		return clazz != null && obj.getClass().equals(clazz);
+	public static Class<?> getMultiBlockChangeInfoClass() {
+		return getMinecraftClass("PacketPlayOutMultiBlockChange$MultiBlockChangeInfo");
+	}
+
+	/**
+	 * Retrieve the MultiBlockChangeInfo array class in 1.8.
+	 * @return The MultiBlockChangeInfo array class
+	 */
+	public static Class<?> getMultiBlockChangeInfoArrayClass() {
+		return getArrayClass(getMultiBlockChangeInfoClass());
 	}
 
 	/**

ProtocolLib/src/main/java/com/comphenix/protocol/wrappers/MultiBlockChangeInfo.java

@@ -0,0 +1,223 @@
+/**
+ * (c) 2015 dmulloy2
+ */
+package com.comphenix.protocol.wrappers;
+
+import java.lang.reflect.Array;
+import java.lang.reflect.Constructor;
+
+import org.bukkit.Location;
+import org.bukkit.World;
+
+import com.comphenix.protocol.reflect.EquivalentConverter;
+import com.comphenix.protocol.reflect.StructureModifier;
+import com.comphenix.protocol.utility.MinecraftReflection;
+
+/**
+ * Represents a single block change.
+ * 
+ * @author dmulloy2
+ */
+
+public class MultiBlockChangeInfo {
+	private short location;
+	private WrappedBlockData data;
+	private ChunkCoordIntPair chunk;
+
+	public MultiBlockChangeInfo(short location, WrappedBlockData data, ChunkCoordIntPair chunk) {
+		this.location = location;
+		this.data = data;
+		this.chunk = chunk;
+	}
+
+	/**
+	 * Returns this block change's absolute Location in a given World.
+	 * 
+	 * @param world World for the location
+	 * @return This block change's absolute Location
+	 */
+	public Location getLocation(World world) {
+		return new Location(world, getX(), getY(), getZ());
+	}
+
+	/**
+	 * Sets this block change's absolute Location.
+	 * 
+	 * @param location This block change's new location
+	 */
+	public void setLocation(Location location) {
+		int x = location.getBlockX() - getChunkX() << 4;
+		int y = location.getBlockY();
+		int z = location.getBlockZ() - getChunkZ() << 4;
+
+		this.location = (short) (x << 12 | z << 8 | y);
+	}
+
+	/**
+	 * Gets this block change's absolute x coordinate
+	 * 
+	 * @return X coordinate
+	 */
+	public int getX() {
+		return getChunkX() + (location >> 12 & 15);
+	}
+
+	/**
+	 * Sets this block change's absolute x coordinate
+	 * 
+	 * @param x New x coordinate
+	 */
+	public void setX(int x) {
+		x -= getChunkX() << 4;
+		this.location = (short) (x << 12 | getZ() << 8 | getY());
+	}
+
+	/**
+	 * Gets this block change's y coordinate.
+	 * 
+	 * @return Y coordinate
+	 */
+	public int getY() {
+		return location & 255;
+	}
+
+	/**
+	 * Sets this block change's y coordinate
+	 * 
+	 * @param y New y coordinate
+	 */
+	public void setY(int y) {
+		this.location = (short) (getX() << 12 | getZ() << 8 | y);
+	}
+
+	/**
+	 * Gets this block change's absolute z coordinate.
+	 * 
+	 * @return Z coordinate
+	 */
+	public int getZ() {
+		return getChunkZ() + (location >> 8 & 15);
+	}
+
+	/**
+	 * Sets this block change's absolute z coordinate.
+	 * 
+	 * @param z New z coordinate
+	 */
+	public void setZ(int z) {
+		z -= getChunkZ() << 4;
+		this.location = (short) (getX() << 12 | getZ() << 8 | getY());
+	}
+
+	private int getChunkX() {
+		return chunk.getChunkX() << 4;
+	}
+
+	private int getChunkZ() {
+		return chunk.getChunkZ() << 4;
+	}
+
+	/**
+	 * Gets this block change's block data.
+	 * 
+	 * @return The block data
+	 */
+	public WrappedBlockData getData() {
+		return data;
+	}
+
+	/**
+	 * Sets this block change's block data.
+	 * 
+	 * @param data New block data
+	 */
+	public void setData(WrappedBlockData data) {
+		this.data = data;
+	}
+
+	/**
+	 * Gets the chunk this block change occured in.
+	 * 
+	 * @return The chunk
+	 */
+	public ChunkCoordIntPair getChunk() {
+		return chunk;
+	}
+
+	public static EquivalentConverter<MultiBlockChangeInfo> getConverter(final ChunkCoordIntPair chunk) {
+		return new EquivalentConverter<MultiBlockChangeInfo>() {
+
+			@Override
+			public MultiBlockChangeInfo getSpecific(Object generic) {
+				StructureModifier<Object> modifier = new StructureModifier<Object>(generic.getClass(), null, false).withTarget(generic);
+
+				StructureModifier<Short> shorts = modifier.withType(short.class);
+				short location = shorts.read(0);
+
+				StructureModifier<WrappedBlockData> dataModifier = modifier.withType(MinecraftReflection.getIBlockDataClass(),
+						BukkitConverters.getWrappedBlockDataConverter());
+				WrappedBlockData data = dataModifier.read(0);
+
+				return new MultiBlockChangeInfo(location, data, chunk);
+			}
+
+			@Override
+			public Object getGeneric(Class<?> genericType, MultiBlockChangeInfo specific) {
+				try {
+					Constructor<?> constructor = MinecraftReflection.getMultiBlockChangeInfoClass().getConstructor(
+							short.class,
+							MinecraftReflection.getIBlockDataClass()
+					);
+
+					return constructor.newInstance(
+							specific.location,
+							BukkitConverters.getWrappedBlockDataConverter().getGeneric(MinecraftReflection.getIBlockDataClass(), specific.data)
+							);
+				} catch (Throwable ex) {
+					throw new RuntimeException("Failed to construct MultiBlockChangeInfo instance.", ex);
+				}
+			}
+
+			@Override
+			public Class<MultiBlockChangeInfo> getSpecificType() {
+				return MultiBlockChangeInfo.class;
+			}
+		};
+	}
+
+	public static EquivalentConverter<MultiBlockChangeInfo[]> getArrayConverter(final ChunkCoordIntPair chunk) {
+		return new EquivalentConverter<MultiBlockChangeInfo[]>() {
+			private final EquivalentConverter<MultiBlockChangeInfo> converter = MultiBlockChangeInfo.getConverter(chunk);
+
+			@Override
+			public MultiBlockChangeInfo[] getSpecific(Object generic) {
+				Object[] array = (Object[]) generic;
+				MultiBlockChangeInfo[] result = new MultiBlockChangeInfo[array.length];
+
+				// Unwrap every item
+				for (int i = 0; i < result.length; i++) {
+					result[i] = converter.getSpecific(array[i]);
+				}
+
+				return result;
+			}
+
+			@Override
+			public Object getGeneric(Class<?> genericType, MultiBlockChangeInfo[] specific) {
+				Object[] result = (Object[]) Array.newInstance(genericType, specific.length);
+
+				// Wrap every item
+				for (int i = 0; i < result.length; i++) {
+					result[i] = converter.getGeneric(genericType, specific[i]);
+				}
+
+				return result;
+			}
+
+			@Override
+			public Class<MultiBlockChangeInfo[]> getSpecificType() {
+				return MultiBlockChangeInfo[].class;
+			}
+		};
+	}
+}