src/main/java/net/glowstone/block/GlowBlock.java - glowstone - Rivoreo Source Code Repositories

 package net.glowstone.block;

 import com.destroystokyo.paper.block.BlockSoundGroup;
 import lombok.Getter;
 import net.glowstone.GlowServer;
 import net.glowstone.GlowWorld;
 import net.glowstone.ServerProvider;
 import net.glowstone.block.MaterialValueManager.ValueCollection;
 import net.glowstone.block.blocktype.BlockRedstone;
 import net.glowstone.block.blocktype.BlockRedstoneTorch;
 import net.glowstone.block.blocktype.BlockType;
 import net.glowstone.block.data.BlockDataManager;
 import net.glowstone.block.entity.BlockEntity;
 import net.glowstone.chunk.GlowChunk;
 import net.glowstone.net.message.play.game.BlockChangeMessage;
 import org.bukkit.Bukkit;
 import org.bukkit.FluidCollisionMode;
 import org.bukkit.Location;
 import org.bukkit.Material;
 import org.bukkit.block.Biome;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
 import org.bukkit.block.PistonMoveReaction;
 import org.bukkit.block.data.BlockData;
 import org.bukkit.block.data.Directional;
 import org.bukkit.block.data.Lightable;
 import org.bukkit.entity.Entity;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.material.Button;
 import org.bukkit.material.Lever;
 import org.bukkit.material.RedstoneTorch;
 import org.bukkit.metadata.MetadataStore;
 import org.bukkit.metadata.MetadataStoreBase;
 import org.bukkit.metadata.MetadataValue;
 import org.bukkit.plugin.Plugin;
 import org.bukkit.util.BoundingBox;
 import org.bukkit.util.RayTraceResult;
 import org.bukkit.util.Vector;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;

 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.concurrent.ThreadLocalRandom;

 /**
  * Represents a single block in a world.
  */
 public class GlowBlock implements Block {

     /**
      * The BlockFaces of a single-layer 3x3 area.
      */
     private static final BlockFace[] LAYER = new BlockFace[]{
         BlockFace.NORTH_WEST, BlockFace.NORTH, BlockFace.NORTH_EAST, BlockFace.EAST, BlockFace.SELF,
         BlockFace.WEST, BlockFace.SOUTH_WEST, BlockFace.SOUTH, BlockFace.SOUTH_EAST};

     /**
      * The BlockFaces of all directly adjacent.
      */
     private static final BlockFace[] ADJACENT = new BlockFace[]{
         BlockFace.NORTH, BlockFace.EAST, BlockFace.SOUTH, BlockFace.WEST, BlockFace.UP,
         BlockFace.DOWN};
     /**
      * The metadata store for blocks.
      */
     private static final MetadataStore<Block> metadata = new BlockMetadataStore();
     private static final Map<GlowBlock, List<Long>> counterMap = new HashMap<>();
     @Getter
     private final int x;
     @Getter
     private final int y;
     @Getter
     private final int z;
     @Getter
     private final GlowWorld world;

     /**
      * Creates an object to refer to a block.
      *
      * @param chunk the chunk
      * @param x the X coordinate
      * @param y the Y coordinate
      * @param z the Z coordinate
      */
     public GlowBlock(GlowChunk chunk, int x, int y, int z) {
         world = chunk.getWorld();
         this.x = x;
         this.y = Math.min(256, Math.max(y, 0));
         this.z = z;
     }

     ////////////////////////////////////////////////////////////////////////////
     // Basics
     @Override
     public GlowChunk getChunk() {
         return (GlowChunk) world.getChunkAt(this);
     }

     @Override
     public void setBlockData(@NotNull BlockData data) {
         // TODO
     }

     @Override
     public void setBlockData(@NotNull BlockData data, boolean applyPhysics) {
         // TODO
     }

     @Override
     public Location getLocation() {
         return new Location(getWorld(), x, y, z);
     }

     @Override
     public Location getLocation(Location loc) {
         if (loc == null) {
             return null;
         }
         loc.setWorld(getWorld());
         loc.setX(x);
         loc.setY(y);
         loc.setZ(z);
         return loc;
     }

     public BlockEntity getBlockEntity() {
         return getChunk().getEntity(x & 0xf, y, z & 0xf);
     }

     @Override
     public GlowBlockState getState() {
         BlockEntity entity = getBlockEntity();
         if (entity != null) {
             GlowBlockState state = entity.getState();
             if (state != null) {
                 return state;
             }
         }
         return new GlowBlockState(this);
     }

     @Override
     public GlowBlockState getState(boolean useSnapshot) {
         return getState(); // TODO: disable use of snapshot
     }

     @Override
     public Biome getBiome() {
         return getWorld().getBiome(x, z);
     }

     @Override
     public void setBiome(Biome bio) {
         getWorld().setBiome(x, z, bio);
     }

     @Override
     public double getTemperature() {
         return getWorld().getTemperature(x, z);
     }

     @Override
     public double getHumidity() {
         return getWorld().getHumidity(x, z);
     }

     ////////////////////////////////////////////////////////////////////////////
     // getFace & getRelative
     @Override
     public BlockFace getFace(Block block) {
         for (BlockFace face : BlockFace.values()) {
             if (x + face.getModX() == block.getX() && y + face.getModY() == block.getY()
                     && z + face.getModZ() == block.getZ()) {
                 return face;
             }
         }
         return null;
     }

     @Override
     public GlowBlock getRelative(int modX, int modY, int modZ) {
         return getWorld().getBlockAt(x + modX, y + modY, z + modZ);
     }

     @Override
     public GlowBlock getRelative(BlockFace face) {
         return getRelative(face.getModX(), face.getModY(), face.getModZ());
     }

     @Override
     public GlowBlock getRelative(BlockFace face, int distance) {
         return getRelative(
                 face.getModX() * distance, face.getModY() * distance, face.getModZ() * distance);
     }

     ////////////////////////////////////////////////////////////////////////////
     // Type and typeid getters/setters
     @Override
     public Material getType() {
         return world.getBlockTypeAt(x, y, z);
     }

     @Override
     public void setType(Material type) {
         setTypeId(type.getId());
     }

     /**
      * Set the Material type of a block and optionally apply physics.
      */
     @Override
     public void setType(Material type, boolean applyPhysics) {
         setTypeId(type.getId(), applyPhysics);
     }

     /**
      * Set the Material type of a block with data and optionally apply physics.
      *
      * @param type The type to set the block to.
      * @param data The raw data to set the block to.
      * @param applyPhysics notify this block and surrounding blocks to update physics
      */
     public void setType(Material type, byte data, boolean applyPhysics) {
         setTypeIdAndData(type.getId(), data, applyPhysics);
     }

     @Deprecated
     public boolean setTypeId(int type) {
         return setTypeId(type, true);
     }

     @Deprecated
     public boolean setTypeId(int type, boolean applyPhysics) {
         return setTypeIdAndData(type, (byte) 0, applyPhysics);
     }

     @Deprecated
     public boolean setTypeIdAndData(int type, byte data, boolean applyPhysics) {
         Material oldTypeId = getType();
         byte oldData = getData();

         GlowChunk chunk = (GlowChunk) world.getChunkAt(this);
         Material material = ((GlowServer) Bukkit.getServer()).getBlockDataManager().convertToBlockData(type).getMaterial();
         chunk.setType(x & 0xf, z & 0xf, y, material);
         chunk.setMetaData(x & 0xf, z & 0xf, y, data);

         // TODO: fix so this hack isn't needed!
         /*if (oldTypeId == Material.DOUBLE_PLANT
                 && getRelative(BlockFace.UP).getType() == Material.DOUBLE_PLANT) {
             world.getChunkAtAsync(this, c -> ((GlowChunk) c).setType(x & 0xf, z & 0xf, y + 1, 0));
             GlowChunk.Key key = GlowChunk.Key.of(x >> 4, z >> 4);
             BlockChangeMessage bcmsg = new BlockChangeMessage(x, y + 1, z, 0, 0);
             world.broadcastBlockChangeInRange(key, bcmsg);
         }*/

         if (applyPhysics) {
             applyPhysics(oldTypeId, material, oldData, data);
         }

         GlowChunk.Key key = GlowChunk.Key.of(x >> 4, z >> 4);
         BlockChangeMessage bcmsg = new BlockChangeMessage(x, y, z, type, data);
         world.broadcastBlockChangeInRange(key, bcmsg);

         return true;
     }

     @Override
     public boolean isEmpty() {
         return MaterialUtil.AIR_VARIANTS.contains(getType());
     }

     @Override
     public boolean isLiquid() {
         Material mat = getType();
         return mat == Material.WATER || mat == Material.LAVA;
     }

     @Override
     public boolean isBuildable() {
         // TODO: This may not be the right implementation
         return this.isSolid();
     }

     /**
      * Get block material's flammable ability. (ability to have fire spread to it)
      *
      * @return if this block is flammable
      */
     public boolean isFlammable() {
         return getMaterialValues().getFlameResistance() >= 0;
     }

     /**
      * Get block material's burn ability. (ability to have fire consume it)
      *
      * @return if this block is burnable
      */
     public boolean isBurnable() {
         return getMaterialValues().getFireResistance() >= 0;
     }

     @Override
     public boolean isReplaceable() {
         // TODO: This may not be the right implementation
         return !this.isSolid();
     }

     @Override
     public boolean isSolid() {
         return getType().isSolid();
     }

     public ValueCollection getMaterialValues() {
         return ((GlowServer) ServerProvider.getServer())
                 .getMaterialValueManager().getValues(getType());
     }

     ////////////////////////////////////////////////////////////////////////////
     // Data and light getters/setters
     @Override
     public byte getData() {
         return (byte) ((GlowChunk) world.getChunkAt(this)).getMetaData(x & 0xf, z & 0xf, y);
     }

     @Override
     public BlockData getBlockData() {
         return null; // TODO
     }

     public void setData(byte data) {
         setData(data, true);
     }

     public void setData(byte data, boolean applyPhysics) {
         byte oldData = getData();
         ((GlowChunk) world.getChunkAt(this)).setMetaData(x & 0xf, z & 0xf, y, data);
         if (applyPhysics) {
             applyPhysics(getType(), getType(), oldData, data);
         }

         GlowChunk.Key key = GlowChunk.Key.of(x >> 4, z >> 4);
         BlockDataManager blockDataManager = ((GlowServer) Bukkit.getServer()).getBlockDataManager();
         BlockData blockData = blockDataManager.createBlockData(getType());
         BlockChangeMessage bcmsg = new BlockChangeMessage(x, y, z,
                 blockDataManager.convertToBlockId(blockData), data);
         world.broadcastBlockChangeInRange(key, bcmsg);
     }

     @Override
     public byte getLightLevel() {
         return (byte) Math.max(getLightFromSky(), getLightFromBlocks());
     }

     @Override
     public byte getLightFromSky() {
         return ((GlowChunk) world.getChunkAt(this)).getSkyLight(x & 0xf, z & 0xf, y);
     }

     @Override
     public byte getLightFromBlocks() {
         return ((GlowChunk) world.getChunkAt(this)).getBlockLight(x & 0xf, z & 0xf, y);
     }

     @Override
     public boolean isValidTool(@NotNull ItemStack itemStack) {
         return true;
     }

     ////////////////////////////////////////////////////////////////////////////
     // Redstone
     @Override
     public boolean isBlockPowered() {
         // Strong powered?

         if (getType() == Material.REDSTONE_BLOCK) {
             return true;
         }

         if (getType() == Material.LEVER && ((Lever) getState().getData()).isPowered()) {
             return true;
         }

         if (MaterialUtil.BUTTONS.contains(getType())
                 && ((Button) getState().getData()).isPowered()) {
             return true;
         }

         // Now checking for power attached, only solid blocks transmit this..
         if (!getType().isSolid()) {
             return false;
         }

         for (BlockFace face : ADJACENT) {
             GlowBlock target = getRelative(face);
             switch (target.getType()) {
                 case LEVER:
                     Lever lever = (Lever) target.getState().getData();
                     if (lever.isPowered() && lever.getAttachedFace() == target.getFace(this)) {
                         return true;
                     }
                     break;
                 case STONE_BUTTON:
                 case OAK_BUTTON:
                 case DARK_OAK_BUTTON:
                 case ACACIA_BUTTON:
                 case BIRCH_BUTTON:
                 case JUNGLE_BUTTON:
                 case SPRUCE_BUTTON:
                     Button button = (Button) target.getState().getData();
                     if (button.isPowered() && button.getAttachedFace() == target.getFace(this)) {
                         return true;
                     }
                     break;
                 case REPEATER:
                     if (((Directional) target.getBlockData()).getFacing() == target.getFace(this)) {
                         return true;
                     }
                     break;
                 case REDSTONE_TORCH:
                     if (face == BlockFace.DOWN
                             && ((RedstoneTorch) target.getState().getData()).isPowered()) {
                         return true;
                     }
                     break;
                 case REDSTONE_WIRE:
                     if (target.getData() > 0
                             && BlockRedstone.calculateConnections(target)
                             .contains(target.getFace(this))) {
                         return true;
                     }
                     break;
                 default:
                     // do nothing
             }
         }

         return false;
     }

     @Override
     public boolean isBlockIndirectlyPowered() {
         // Is a nearby block directly powered?
         for (BlockFace face : ADJACENT) {
             GlowBlock block = getRelative(face);
             if (block.isBlockPowered()) {
                 return true;
             }

             switch (block.getType()) {
                 case REDSTONE_TORCH:
                     if (((Lightable) block.getBlockData()).isLit()
                         && face != BlockRedstoneTorch.getAttachedBlockFace(block).getOppositeFace()) {
                         return true;
                     }
                     break;
                 case REDSTONE_WIRE:
                     if (block.getData() > 0 && BlockRedstone.calculateConnections(block)
                             .contains(block.getFace(this))) {
                         return true;
                     }
                     break;
                 default:
                     // do nothing
             }
         }
         return false;
     }

     @Override
     public boolean isBlockFacePowered(BlockFace face) {
         throw new UnsupportedOperationException("Not supported yet.");
     }

     @Override
     public boolean isBlockFaceIndirectlyPowered(BlockFace face) {
         throw new UnsupportedOperationException("Not supported yet.");
     }

     @Override
     public int getBlockPower(BlockFace face) {
         throw new UnsupportedOperationException("Not supported yet.");
     }

     @Override
     public int getBlockPower() {
         throw new UnsupportedOperationException("Not supported yet.");
     }

     @Override
     public PistonMoveReaction getPistonMoveReaction() {
         throw new UnsupportedOperationException("Not supported yet.");
     }

     @Override
     public String toString() {
         return "GlowBlock{chunk=" + getChunk() + ",x=" + x + ",y=" + y + ",z=" + z + ",type="
                 + getType() + ",data=" + getData() + "}";
     }

     ////////////////////////////////////////////////////////////////////////////
     // Drops and breaking

     /**
      * Break the block naturally, randomly dropping only some of the drops.
      *
      * @param yield The approximate portion of the drops to actually drop.
      * @return true if the block was destroyed
      */
     public boolean breakNaturally(float yield) {
         return breakNaturally(yield, ItemTable.instance().getBlock(getType()).getMinedDrops(this));
     }

     /**
      * Breaks this block and drops items.
      *
      * @param yield the probability to drop each item
      * @param drops the items to potentially drop
      * @return true if broken; false if this block is already air
      */
     public boolean breakNaturally(float yield, Collection<ItemStack> drops) {
         if (getType() == Material.AIR) {
             return false;
         }

         Location location = getLocation();
         drops.stream().filter(stack -> ThreadLocalRandom.current().nextFloat() < yield)
                 .forEach(stack -> getWorld().dropItemNaturally(location, stack));

         setType(Material.AIR);
         return true;
     }

     @Override
     public boolean breakNaturally() {
         return breakNaturally(1.0f);
     }

     @Override
     public boolean breakNaturally(ItemStack tool) {
         Collection<ItemStack> drops = getDrops(tool);
         if (!drops.isEmpty()) {
             return breakNaturally(1.0f, drops);
         } else {
             return setTypeId(Material.AIR.getId());
         }
     }

     @Override
     public boolean breakNaturally(@NotNull ItemStack tool, boolean triggerEffect) {
         // TODO: triggerEffect
         return breakNaturally(tool);
     }

     @Override
     public boolean applyBoneMeal(@NotNull BlockFace blockFace) {
         return false;
     }

     @Override
     public Collection<ItemStack> getDrops() {
         return Objects.requireNonNull(ItemTable.instance().getBlock(getType())).getMinedDrops(this);
     }

     @Override
     public Collection<ItemStack> getDrops(ItemStack tool) {
         return Objects.requireNonNull(ItemTable.instance().getBlock(getType())).getDrops(this, tool);
     }

     @Override
     public @NotNull Collection<ItemStack> getDrops(@NotNull ItemStack tool, @Nullable Entity entity) {
         // TODO: find usage for entity
         return getDrops(tool);
     }

     @Override
     public boolean isPreferredTool(@NotNull ItemStack itemStack) {
         throw new UnsupportedOperationException("Not supported yet.");
     }

     @Override
     public boolean isPassable() {
         return isEmpty(); // TODO
     }

     @Override
     public @Nullable RayTraceResult rayTrace(@NotNull Location start, @NotNull Vector direction,
             double maxDistance, @NotNull FluidCollisionMode fluidCollisionMode) {
         return null; // TODO
     }

     @Override
     public @NotNull BoundingBox getBoundingBox() {
         if (isEmpty()) {
             return new BoundingBox(x,y,z,x,y,z); // 0x0x0 bounding box
         }
         return BoundingBox.of(this); // TODO: Some blocks don't fill their space
     }

     @Override
     public @NotNull BlockSoundGroup getSoundGroup() {
         return null;
     }

     @NotNull
     @Override
     public String getTranslationKey() {
         return null;
     }

     @NotNull
     @Override
     public float getDestroySpeed(@NotNull ItemStack tool) {
         // TODO: not implemented
         return 1.0f;
     }

     @Override
     public @NotNull float getDestroySpeed(@NotNull ItemStack itemStack, boolean considerEnchants) {
         // TODO: not implemented
         return 1.0f;
     }

     ////////////////////////////////////////////////////////////////////////////
     // Metadata
     @Override
     public void setMetadata(String metadataKey, MetadataValue newMetadataValue) {
         metadata.setMetadata(this, metadataKey, newMetadataValue);
     }

     @Override
     public List<MetadataValue> getMetadata(String metadataKey) {
         return metadata.getMetadata(this, metadataKey);
     }

     @Override
     public boolean hasMetadata(String metadataKey) {
         return metadata.hasMetadata(this, metadataKey);
     }

     @Override
     public void removeMetadata(String metadataKey, Plugin owningPlugin) {
         metadata.removeMetadata(this, metadataKey, owningPlugin);
     }

     /////////////////////////////////////////////////////////////////////////////
     // Physics

     /**
      * Notify this block and its surrounding blocks that this block has changed type and data.
      *
      * @param oldType the old block type
      * @param newType the new block type
      * @param oldData the old data
      * @param newData the new data
      */
     public void applyPhysics(Material oldType, Material newType, byte oldData, byte newData) {
         if (!world.isInitialized()) {
             // World is still loading.
             return;
         }
         // notify the surrounding blocks that this block has changed
         ItemTable itemTable = ItemTable.instance();

         for (int y = -1; y <= 1; y++) {
             for (BlockFace face : LAYER) {
                 if (y == 0 && face == BlockFace.SELF) {
                     continue;
                 }

                 GlowBlock notify = getRelative(face.getModX(), face.getModY() + y, face.getModZ());

                 BlockFace blockFace;
                 if (y == 0) {
                     blockFace = face.getOppositeFace();
                 } else if (y == -1 && face == BlockFace.SELF) {
                     blockFace = BlockFace.UP;
                 } else if (y == 1 && face == BlockFace.SELF) {
                     blockFace = BlockFace.DOWN;
                 } else {
                     blockFace = null;
                 }

                 BlockType notifyType = itemTable.getBlock(notify.getType());
                 if (notifyType != null) {
                     notifyType
                             .onNearBlockChanged(notify, blockFace, this, oldType, oldData,
                                     newType, newData);
                 }
             }
         }

         BlockType type = itemTable.getBlock(oldType);
         if (type != null) {
             type.onBlockChanged(this, oldType, oldData, newType, newData);
         }
     }

     /**
      * Increments the count of recent state changes. Used to implement redstone-torch burnout.
      *
      * @param timeout the number of game ticks before this state change is no longer considered
      *     recent
      */
     public void count(int timeout) {
         GlowBlock target = this;
         List<Long> gameTicks = new ArrayList<>();
         for (GlowBlock block : counterMap.keySet()) {
             if (block.getLocation().equals(getLocation())) {
                 gameTicks = counterMap.get(block);
                 target = block;
                 break;
             }
         }

         long time = getWorld().getFullTime();
         gameTicks.add(time + timeout);

         counterMap.put(target, gameTicks);
     }

     /**
      * Returns the number of recent state changes, as defined by {@link #count(int)}. Used to
      * implement redstone-torch burnout.
      *
      * @return the number of recent state changes
      */
     public int getCounter() {
         GlowBlock target = this;
         List<Long> gameTicks = new ArrayList<>();
         for (GlowBlock block : counterMap.keySet()) {
             if (block.getLocation().equals(getLocation())) {
                 gameTicks = counterMap.get(block);
                 target = block;
                 break;
             }
         }

         long time = getWorld().getFullTime();

         gameTicks.removeIf(rate -> rate < time);

         counterMap.put(target, gameTicks);
         return gameTicks.size();
     }

     @Override
     public int hashCode() {
         return y << 24 ^ x ^ z ^ getWorld().hashCode();
     }

     @Override
     public boolean equals(Object obj) {
         if (obj == null || getClass() != obj.getClass()) {
             return false;
         }
         GlowBlock other = (GlowBlock) obj;
         return x == other.x && y == other.y && z == other.z && getWorld().equals(other.getWorld());
     }

     /**
      * The metadata store class for blocks.
      */
     private static final class BlockMetadataStore extends MetadataStoreBase<Block> implements
             MetadataStore<Block> {

         @Override
         protected String disambiguate(Block subject, String metadataKey) {
             return subject.getWorld() + "," + subject.getX() + "," + subject.getY() + "," + subject
                     .getZ() + ":" + metadataKey;
         }
     }
 }
	package net.glowstone.block;

	import com.destroystokyo.paper.block.BlockSoundGroup;
	import lombok.Getter;
	import net.glowstone.GlowServer;
	import net.glowstone.GlowWorld;
	import net.glowstone.ServerProvider;
	import net.glowstone.block.MaterialValueManager.ValueCollection;
	import net.glowstone.block.blocktype.BlockRedstone;
	import net.glowstone.block.blocktype.BlockRedstoneTorch;
	import net.glowstone.block.blocktype.BlockType;
	import net.glowstone.block.data.BlockDataManager;
	import net.glowstone.block.entity.BlockEntity;
	import net.glowstone.chunk.GlowChunk;
	import net.glowstone.net.message.play.game.BlockChangeMessage;
	import org.bukkit.Bukkit;
	import org.bukkit.FluidCollisionMode;
	import org.bukkit.Location;
	import org.bukkit.Material;
	import org.bukkit.block.Biome;
	import org.bukkit.block.Block;
	import org.bukkit.block.BlockFace;
	import org.bukkit.block.PistonMoveReaction;
	import org.bukkit.block.data.BlockData;
	import org.bukkit.block.data.Directional;
	import org.bukkit.block.data.Lightable;
	import org.bukkit.entity.Entity;
	import org.bukkit.inventory.ItemStack;
	import org.bukkit.material.Button;
	import org.bukkit.material.Lever;
	import org.bukkit.material.RedstoneTorch;
	import org.bukkit.metadata.MetadataStore;
	import org.bukkit.metadata.MetadataStoreBase;
	import org.bukkit.metadata.MetadataValue;
	import org.bukkit.plugin.Plugin;
	import org.bukkit.util.BoundingBox;
	import org.bukkit.util.RayTraceResult;
	import org.bukkit.util.Vector;
	import org.jetbrains.annotations.NotNull;
	import org.jetbrains.annotations.Nullable;

	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;
	import java.util.Objects;
	import java.util.concurrent.ThreadLocalRandom;

	/**
	* Represents a single block in a world.
	*/
	public class GlowBlock implements Block {

	/**
	* The BlockFaces of a single-layer 3x3 area.
	*/
	private static final BlockFace[] LAYER = new BlockFace[]{
	BlockFace.NORTH_WEST, BlockFace.NORTH, BlockFace.NORTH_EAST, BlockFace.EAST, BlockFace.SELF,
	BlockFace.WEST, BlockFace.SOUTH_WEST, BlockFace.SOUTH, BlockFace.SOUTH_EAST};

	/**
	* The BlockFaces of all directly adjacent.
	*/
	private static final BlockFace[] ADJACENT = new BlockFace[]{
	BlockFace.NORTH, BlockFace.EAST, BlockFace.SOUTH, BlockFace.WEST, BlockFace.UP,
	BlockFace.DOWN};
	/**
	* The metadata store for blocks.
	*/
	private static final MetadataStore<Block> metadata = new BlockMetadataStore();
	private static final Map<GlowBlock, List<Long>> counterMap = new HashMap<>();
	@Getter
	private final int x;
	@Getter
	private final int y;
	@Getter
	private final int z;
	@Getter
	private final GlowWorld world;

	/**
	* Creates an object to refer to a block.
	*
	* @param chunk the chunk
	* @param x the X coordinate
	* @param y the Y coordinate
	* @param z the Z coordinate
	*/
	public GlowBlock(GlowChunk chunk, int x, int y, int z) {
	world = chunk.getWorld();
	this.x = x;
	this.y = Math.min(256, Math.max(y, 0));
	this.z = z;
	}

	////////////////////////////////////////////////////////////////////////////
	// Basics
	@Override
	public GlowChunk getChunk() {
	return (GlowChunk) world.getChunkAt(this);
	}

	@Override
	public void setBlockData(@NotNull BlockData data) {
	// TODO
	}

	@Override
	public void setBlockData(@NotNull BlockData data, boolean applyPhysics) {
	// TODO
	}

	@Override
	public Location getLocation() {
	return new Location(getWorld(), x, y, z);
	}

	@Override
	public Location getLocation(Location loc) {
	if (loc == null) {
	return null;
	}
	loc.setWorld(getWorld());
	loc.setX(x);
	loc.setY(y);
	loc.setZ(z);
	return loc;
	}

	public BlockEntity getBlockEntity() {
	return getChunk().getEntity(x & 0xf, y, z & 0xf);
	}

	@Override
	public GlowBlockState getState() {
	BlockEntity entity = getBlockEntity();
	if (entity != null) {
	GlowBlockState state = entity.getState();
	if (state != null) {
	return state;
	}
	}
	return new GlowBlockState(this);
	}

	@Override
	public GlowBlockState getState(boolean useSnapshot) {
	return getState(); // TODO: disable use of snapshot
	}

	@Override
	public Biome getBiome() {
	return getWorld().getBiome(x, z);
	}

	@Override
	public void setBiome(Biome bio) {
	getWorld().setBiome(x, z, bio);
	}

	@Override
	public double getTemperature() {
	return getWorld().getTemperature(x, z);
	}

	@Override
	public double getHumidity() {
	return getWorld().getHumidity(x, z);
	}

	////////////////////////////////////////////////////////////////////////////
	// getFace & getRelative
	@Override
	public BlockFace getFace(Block block) {
	for (BlockFace face : BlockFace.values()) {
	if (x + face.getModX() == block.getX() && y + face.getModY() == block.getY()
	&& z + face.getModZ() == block.getZ()) {
	return face;
	}
	}
	return null;
	}

	@Override
	public GlowBlock getRelative(int modX, int modY, int modZ) {
	return getWorld().getBlockAt(x + modX, y + modY, z + modZ);
	}

	@Override
	public GlowBlock getRelative(BlockFace face) {
	return getRelative(face.getModX(), face.getModY(), face.getModZ());
	}

	@Override
	public GlowBlock getRelative(BlockFace face, int distance) {
	return getRelative(
	face.getModX() * distance, face.getModY() * distance, face.getModZ() * distance);
	}

	////////////////////////////////////////////////////////////////////////////
	// Type and typeid getters/setters
	@Override
	public Material getType() {
	return world.getBlockTypeAt(x, y, z);
	}

	@Override
	public void setType(Material type) {
	setTypeId(type.getId());
	}

	/**
	* Set the Material type of a block and optionally apply physics.
	*/
	@Override
	public void setType(Material type, boolean applyPhysics) {
	setTypeId(type.getId(), applyPhysics);
	}

	/**
	* Set the Material type of a block with data and optionally apply physics.
	*
	* @param type The type to set the block to.
	* @param data The raw data to set the block to.
	* @param applyPhysics notify this block and surrounding blocks to update physics
	*/
	public void setType(Material type, byte data, boolean applyPhysics) {
	setTypeIdAndData(type.getId(), data, applyPhysics);
	}

	@Deprecated
	public boolean setTypeId(int type) {
	return setTypeId(type, true);
	}

	@Deprecated
	public boolean setTypeId(int type, boolean applyPhysics) {
	return setTypeIdAndData(type, (byte) 0, applyPhysics);
	}

	@Deprecated
	public boolean setTypeIdAndData(int type, byte data, boolean applyPhysics) {
	Material oldTypeId = getType();
	byte oldData = getData();

	GlowChunk chunk = (GlowChunk) world.getChunkAt(this);
	Material material = ((GlowServer) Bukkit.getServer()).getBlockDataManager().convertToBlockData(type).getMaterial();
	chunk.setType(x & 0xf, z & 0xf, y, material);
	chunk.setMetaData(x & 0xf, z & 0xf, y, data);

	// TODO: fix so this hack isn't needed!
	/*if (oldTypeId == Material.DOUBLE_PLANT
	&& getRelative(BlockFace.UP).getType() == Material.DOUBLE_PLANT) {
	world.getChunkAtAsync(this, c -> ((GlowChunk) c).setType(x & 0xf, z & 0xf, y + 1, 0));
	GlowChunk.Key key = GlowChunk.Key.of(x >> 4, z >> 4);
	BlockChangeMessage bcmsg = new BlockChangeMessage(x, y + 1, z, 0, 0);
	world.broadcastBlockChangeInRange(key, bcmsg);
	}*/

	if (applyPhysics) {
	applyPhysics(oldTypeId, material, oldData, data);
	}

	GlowChunk.Key key = GlowChunk.Key.of(x >> 4, z >> 4);
	BlockChangeMessage bcmsg = new BlockChangeMessage(x, y, z, type, data);
	world.broadcastBlockChangeInRange(key, bcmsg);

	return true;
	}

	@Override
	public boolean isEmpty() {
	return MaterialUtil.AIR_VARIANTS.contains(getType());
	}

	@Override
	public boolean isLiquid() {
	Material mat = getType();
	return mat == Material.WATER \|\| mat == Material.LAVA;
	}

	@Override
	public boolean isBuildable() {
	// TODO: This may not be the right implementation
	return this.isSolid();
	}

	/**
	* Get block material's flammable ability. (ability to have fire spread to it)
	*
	* @return if this block is flammable
	*/
	public boolean isFlammable() {
	return getMaterialValues().getFlameResistance() >= 0;
	}

	/**
	* Get block material's burn ability. (ability to have fire consume it)
	*
	* @return if this block is burnable
	*/
	public boolean isBurnable() {
	return getMaterialValues().getFireResistance() >= 0;
	}

	@Override
	public boolean isReplaceable() {
	// TODO: This may not be the right implementation
	return !this.isSolid();
	}

	@Override
	public boolean isSolid() {
	return getType().isSolid();
	}

	public ValueCollection getMaterialValues() {
	return ((GlowServer) ServerProvider.getServer())
	.getMaterialValueManager().getValues(getType());
	}

	////////////////////////////////////////////////////////////////////////////
	// Data and light getters/setters
	@Override
	public byte getData() {
	return (byte) ((GlowChunk) world.getChunkAt(this)).getMetaData(x & 0xf, z & 0xf, y);
	}

	@Override
	public BlockData getBlockData() {
	return null; // TODO
	}

	public void setData(byte data) {
	setData(data, true);
	}

	public void setData(byte data, boolean applyPhysics) {
	byte oldData = getData();
	((GlowChunk) world.getChunkAt(this)).setMetaData(x & 0xf, z & 0xf, y, data);
	if (applyPhysics) {
	applyPhysics(getType(), getType(), oldData, data);
	}

	GlowChunk.Key key = GlowChunk.Key.of(x >> 4, z >> 4);
	BlockDataManager blockDataManager = ((GlowServer) Bukkit.getServer()).getBlockDataManager();
	BlockData blockData = blockDataManager.createBlockData(getType());
	BlockChangeMessage bcmsg = new BlockChangeMessage(x, y, z,
	blockDataManager.convertToBlockId(blockData), data);
	world.broadcastBlockChangeInRange(key, bcmsg);
	}

	@Override
	public byte getLightLevel() {
	return (byte) Math.max(getLightFromSky(), getLightFromBlocks());
	}

	@Override
	public byte getLightFromSky() {
	return ((GlowChunk) world.getChunkAt(this)).getSkyLight(x & 0xf, z & 0xf, y);
	}

	@Override
	public byte getLightFromBlocks() {
	return ((GlowChunk) world.getChunkAt(this)).getBlockLight(x & 0xf, z & 0xf, y);
	}

	@Override
	public boolean isValidTool(@NotNull ItemStack itemStack) {
	return true;
	}

	////////////////////////////////////////////////////////////////////////////
	// Redstone
	@Override
	public boolean isBlockPowered() {
	// Strong powered?

	if (getType() == Material.REDSTONE_BLOCK) {
	return true;
	}

	if (getType() == Material.LEVER && ((Lever) getState().getData()).isPowered()) {
	return true;
	}

	if (MaterialUtil.BUTTONS.contains(getType())
	&& ((Button) getState().getData()).isPowered()) {
	return true;
	}

	// Now checking for power attached, only solid blocks transmit this..
	if (!getType().isSolid()) {
	return false;
	}

	for (BlockFace face : ADJACENT) {
	GlowBlock target = getRelative(face);
	switch (target.getType()) {
	case LEVER:
	Lever lever = (Lever) target.getState().getData();
	if (lever.isPowered() && lever.getAttachedFace() == target.getFace(this)) {
	return true;
	}
	break;
	case STONE_BUTTON:
	case OAK_BUTTON:
	case DARK_OAK_BUTTON:
	case ACACIA_BUTTON:
	case BIRCH_BUTTON:
	case JUNGLE_BUTTON:
	case SPRUCE_BUTTON:
	Button button = (Button) target.getState().getData();
	if (button.isPowered() && button.getAttachedFace() == target.getFace(this)) {
	return true;
	}
	break;
	case REPEATER:
	if (((Directional) target.getBlockData()).getFacing() == target.getFace(this)) {
	return true;
	}
	break;
	case REDSTONE_TORCH:
	if (face == BlockFace.DOWN
	&& ((RedstoneTorch) target.getState().getData()).isPowered()) {
	return true;
	}
	break;
	case REDSTONE_WIRE:
	if (target.getData() > 0
	&& BlockRedstone.calculateConnections(target)
	.contains(target.getFace(this))) {
	return true;
	}
	break;
	default:
	// do nothing
	}
	}

	return false;
	}

	@Override
	public boolean isBlockIndirectlyPowered() {
	// Is a nearby block directly powered?
	for (BlockFace face : ADJACENT) {
	GlowBlock block = getRelative(face);
	if (block.isBlockPowered()) {
	return true;
	}

	switch (block.getType()) {
	case REDSTONE_TORCH:
	if (((Lightable) block.getBlockData()).isLit()
	&& face != BlockRedstoneTorch.getAttachedBlockFace(block).getOppositeFace()) {
	return true;
	}
	break;
	case REDSTONE_WIRE:
	if (block.getData() > 0 && BlockRedstone.calculateConnections(block)
	.contains(block.getFace(this))) {
	return true;
	}
	break;
	default:
	// do nothing
	}
	}
	return false;
	}

	@Override
	public boolean isBlockFacePowered(BlockFace face) {
	throw new UnsupportedOperationException("Not supported yet.");
	}

	@Override
	public boolean isBlockFaceIndirectlyPowered(BlockFace face) {
	throw new UnsupportedOperationException("Not supported yet.");
	}

	@Override
	public int getBlockPower(BlockFace face) {
	throw new UnsupportedOperationException("Not supported yet.");
	}

	@Override
	public int getBlockPower() {
	throw new UnsupportedOperationException("Not supported yet.");
	}

	@Override
	public PistonMoveReaction getPistonMoveReaction() {
	throw new UnsupportedOperationException("Not supported yet.");
	}

	@Override
	public String toString() {
	return "GlowBlock{chunk=" + getChunk() + ",x=" + x + ",y=" + y + ",z=" + z + ",type="
	+ getType() + ",data=" + getData() + "}";
	}

	////////////////////////////////////////////////////////////////////////////
	// Drops and breaking

	/**
	* Break the block naturally, randomly dropping only some of the drops.
	*
	* @param yield The approximate portion of the drops to actually drop.
	* @return true if the block was destroyed
	*/
	public boolean breakNaturally(float yield) {
	return breakNaturally(yield, ItemTable.instance().getBlock(getType()).getMinedDrops(this));
	}

	/**
	* Breaks this block and drops items.
	*
	* @param yield the probability to drop each item
	* @param drops the items to potentially drop
	* @return true if broken; false if this block is already air
	*/
	public boolean breakNaturally(float yield, Collection<ItemStack> drops) {
	if (getType() == Material.AIR) {
	return false;
	}

	Location location = getLocation();
	drops.stream().filter(stack -> ThreadLocalRandom.current().nextFloat() < yield)
	.forEach(stack -> getWorld().dropItemNaturally(location, stack));

	setType(Material.AIR);
	return true;
	}

	@Override
	public boolean breakNaturally() {
	return breakNaturally(1.0f);
	}

	@Override
	public boolean breakNaturally(ItemStack tool) {
	Collection<ItemStack> drops = getDrops(tool);
	if (!drops.isEmpty()) {
	return breakNaturally(1.0f, drops);
	} else {
	return setTypeId(Material.AIR.getId());
	}
	}

	@Override
	public boolean breakNaturally(@NotNull ItemStack tool, boolean triggerEffect) {
	// TODO: triggerEffect
	return breakNaturally(tool);
	}

	@Override
	public boolean applyBoneMeal(@NotNull BlockFace blockFace) {
	return false;
	}

	@Override
	public Collection<ItemStack> getDrops() {
	return Objects.requireNonNull(ItemTable.instance().getBlock(getType())).getMinedDrops(this);
	}

	@Override
	public Collection<ItemStack> getDrops(ItemStack tool) {
	return Objects.requireNonNull(ItemTable.instance().getBlock(getType())).getDrops(this, tool);
	}

	@Override
	public @NotNull Collection<ItemStack> getDrops(@NotNull ItemStack tool, @Nullable Entity entity) {
	// TODO: find usage for entity
	return getDrops(tool);
	}

	@Override
	public boolean isPreferredTool(@NotNull ItemStack itemStack) {
	throw new UnsupportedOperationException("Not supported yet.");
	}

	@Override
	public boolean isPassable() {
	return isEmpty(); // TODO
	}

	@Override
	public @Nullable RayTraceResult rayTrace(@NotNull Location start, @NotNull Vector direction,
	double maxDistance, @NotNull FluidCollisionMode fluidCollisionMode) {
	return null; // TODO
	}

	@Override
	public @NotNull BoundingBox getBoundingBox() {
	if (isEmpty()) {
	return new BoundingBox(x,y,z,x,y,z); // 0x0x0 bounding box
	}
	return BoundingBox.of(this); // TODO: Some blocks don't fill their space
	}

	@Override
	public @NotNull BlockSoundGroup getSoundGroup() {
	return null;
	}

	@NotNull
	@Override
	public String getTranslationKey() {
	return null;
	}

	@NotNull
	@Override
	public float getDestroySpeed(@NotNull ItemStack tool) {
	// TODO: not implemented
	return 1.0f;
	}

	@Override
	public @NotNull float getDestroySpeed(@NotNull ItemStack itemStack, boolean considerEnchants) {
	// TODO: not implemented
	return 1.0f;
	}

	////////////////////////////////////////////////////////////////////////////
	// Metadata
	@Override
	public void setMetadata(String metadataKey, MetadataValue newMetadataValue) {
	metadata.setMetadata(this, metadataKey, newMetadataValue);
	}

	@Override
	public List<MetadataValue> getMetadata(String metadataKey) {
	return metadata.getMetadata(this, metadataKey);
	}

	@Override
	public boolean hasMetadata(String metadataKey) {
	return metadata.hasMetadata(this, metadataKey);
	}

	@Override
	public void removeMetadata(String metadataKey, Plugin owningPlugin) {
	metadata.removeMetadata(this, metadataKey, owningPlugin);
	}

	/////////////////////////////////////////////////////////////////////////////
	// Physics

	/**
	* Notify this block and its surrounding blocks that this block has changed type and data.
	*
	* @param oldType the old block type
	* @param newType the new block type
	* @param oldData the old data
	* @param newData the new data
	*/
	public void applyPhysics(Material oldType, Material newType, byte oldData, byte newData) {
	if (!world.isInitialized()) {
	// World is still loading.
	return;
	}
	// notify the surrounding blocks that this block has changed
	ItemTable itemTable = ItemTable.instance();

	for (int y = -1; y <= 1; y++) {
	for (BlockFace face : LAYER) {
	if (y == 0 && face == BlockFace.SELF) {
	continue;
	}

	GlowBlock notify = getRelative(face.getModX(), face.getModY() + y, face.getModZ());

	BlockFace blockFace;
	if (y == 0) {
	blockFace = face.getOppositeFace();
	} else if (y == -1 && face == BlockFace.SELF) {
	blockFace = BlockFace.UP;
	} else if (y == 1 && face == BlockFace.SELF) {
	blockFace = BlockFace.DOWN;
	} else {
	blockFace = null;
	}

	BlockType notifyType = itemTable.getBlock(notify.getType());
	if (notifyType != null) {
	notifyType
	.onNearBlockChanged(notify, blockFace, this, oldType, oldData,
	newType, newData);
	}
	}
	}

	BlockType type = itemTable.getBlock(oldType);
	if (type != null) {
	type.onBlockChanged(this, oldType, oldData, newType, newData);
	}
	}

	/**
	* Increments the count of recent state changes. Used to implement redstone-torch burnout.
	*
	* @param timeout the number of game ticks before this state change is no longer considered
	* recent
	*/
	public void count(int timeout) {
	GlowBlock target = this;
	List<Long> gameTicks = new ArrayList<>();
	for (GlowBlock block : counterMap.keySet()) {
	if (block.getLocation().equals(getLocation())) {
	gameTicks = counterMap.get(block);
	target = block;
	break;
	}
	}

	long time = getWorld().getFullTime();
	gameTicks.add(time + timeout);

	counterMap.put(target, gameTicks);
	}

	/**
	* Returns the number of recent state changes, as defined by {@link #count(int)}. Used to
	* implement redstone-torch burnout.
	*
	* @return the number of recent state changes
	*/
	public int getCounter() {
	GlowBlock target = this;
	List<Long> gameTicks = new ArrayList<>();
	for (GlowBlock block : counterMap.keySet()) {
	if (block.getLocation().equals(getLocation())) {
	gameTicks = counterMap.get(block);
	target = block;
	break;
	}
	}

	long time = getWorld().getFullTime();

	gameTicks.removeIf(rate -> rate < time);

	counterMap.put(target, gameTicks);
	return gameTicks.size();
	}

	@Override
	public int hashCode() {
	return y << 24 ^ x ^ z ^ getWorld().hashCode();
	}

	@Override
	public boolean equals(Object obj) {
	if (obj == null \|\| getClass() != obj.getClass()) {
	return false;
	}
	GlowBlock other = (GlowBlock) obj;
	return x == other.x && y == other.y && z == other.z && getWorld().equals(other.getWorld());
	}

	/**
	* The metadata store class for blocks.
	*/
	private static final class BlockMetadataStore extends MetadataStoreBase<Block> implements
	MetadataStore<Block> {

	@Override
	protected String disambiguate(Block subject, String metadataKey) {
	return subject.getWorld() + "," + subject.getX() + "," + subject.getY() + "," + subject
	.getZ() + ":" + metadataKey;
	}
	}
	}