package mekanism.api;
import java.util.ArrayList;
import net.minecraft.block.Block;
import net.minecraft.entity.Entity;
import net.minecraft.init.Blocks;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.MathHelper;
import net.minecraft.world.IBlockAccess;
import net.minecraft.world.World;
import net.minecraft.world.chunk.Chunk;
import net.minecraftforge.common.util.ForgeDirection;
import cpw.mods.fml.common.network.NetworkRegistry.TargetPoint;
import io.netty.buffer.ByteBuf;
/**
* Coord4D - an integer-based way to keep track of and perform operations on blocks in a Minecraft-based environment. This also takes
* in account the dimension the coordinate is in.
* @author aidancbrady
*
*/
public class Coord4D
{
public int xCoord;
public int yCoord;
public int zCoord;
public int dimensionId;
/**
* Creates a Coord4D WITHOUT a dimensionId. Don't use unless absolutely necessary.
* @param x - x coordinate
* @param y - y coordinate
* @param z - z coordinate
*/
public Coord4D(int x, int y, int z)
{
xCoord = x;
yCoord = y;
zCoord = z;
dimensionId = 0;
}
/**
* Creates a Coord4D from an entity's position, rounded down.
* @param entity - entity to create the Coord4D from
*/
public Coord4D(Entity entity)
{
xCoord = (int)entity.posX;
yCoord = (int)entity.posY;
zCoord = (int)entity.posZ;
dimensionId = entity.worldObj.provider.dimensionId;
}
/**
* Creates a Coord4D from the defined x, y, z, and dimension values.
* @param x - x coordinate
* @param y - y coordinate
* @param z - z coordinate
* @param dimension - dimension ID
*/
public Coord4D(int x, int y, int z, int dimension)
{
xCoord = x;
yCoord = y;
zCoord = z;
dimensionId = dimension;
}
/**
* Gets the metadata of the block representing this Coord4D.
* @param world - world this Coord4D is in
* @return the metadata of this Coord4D's block
*/
public int getMetadata(IBlockAccess world)
{
return world.getBlockMetadata(xCoord, yCoord, zCoord);
}
/**
* Gets the TileEntity of the block representing this Coord4D.
* @param world - world this Coord4D is in
* @return the TileEntity of this Coord4D's block
*/
public TileEntity getTileEntity(IBlockAccess world)
{
if(world instanceof World && !exists((World)world))
{
return null;
}
return world.getTileEntity(xCoord, yCoord, zCoord);
}
/**
* Gets the Block value of the block representing this Coord4D.
* @param world - world this Coord4D is in
* @return the Block value of this Coord4D's block
*/
public Block getBlock(IBlockAccess world)
{
if(world instanceof World && !exists((World)world))
{
return null;
}
return world.getBlock(xCoord, yCoord, zCoord);
}
/**
* Writes this Coord4D's data to an NBTTagCompound.
* @param nbtTags - tag compound to write to
* @return the tag compound with this Coord4D's data
*/
public NBTTagCompound write(NBTTagCompound nbtTags)
{
nbtTags.setInteger("x", xCoord);
nbtTags.setInteger("y", yCoord);
nbtTags.setInteger("z", zCoord);
nbtTags.setInteger("dimensionId", dimensionId);
return nbtTags;
}
/**
* Writes this Coord4D's data to an ArrayList for packet transfer.
* @param data - the ArrayList to add the data to
*/
public void write(ArrayList data)
{
data.add(xCoord);
data.add(yCoord);
data.add(zCoord);
data.add(dimensionId);
}
/**
* Writes this Coord4D's data to a ByteBuf for packet transfer.
* @param dataStream - the ByteBuf to add the data to
*/
public void write(ByteBuf dataStream)
{
dataStream.writeInt(xCoord);
dataStream.writeInt(yCoord);
dataStream.writeInt(zCoord);
dataStream.writeInt(dimensionId);
}
/**
* Translates this Coord4D by the defined x, y, and z values.
* @param x - x value to translate
* @param y - y value to translate
* @param z - z value to translate
* @return translated Coord4D
*/
public Coord4D translate(int x, int y, int z)
{
xCoord += x;
yCoord += y;
zCoord += z;
return this;
}
/**
* Creates and returns a new Coord4D translated to the defined offsets of the side.
* @param side - side to translate this Coord4D to
* @return translated Coord4D
*/
public Coord4D getFromSide(ForgeDirection side)
{
return getFromSide(side, 1);
}
/**
* Creates and returns a new Coord4D translated to the defined offsets of the side by the defined amount.
* @param side - side to translate this Coord4D to
* @param amount - how far to translate this Coord4D
* @return translated Coord4D
*/
public Coord4D getFromSide(ForgeDirection side, int amount)
{
return new Coord4D(xCoord+(side.offsetX*amount), yCoord+(side.offsetY*amount), zCoord+(side.offsetZ*amount), dimensionId);
}
public ItemStack getStack(IBlockAccess world)
{
Block block = getBlock(world);
if(block == null || block == Blocks.air)
{
return null;
}
return new ItemStack(block, 1, getMetadata(world));
}
/**
* Returns a new Coord4D from a defined TileEntity's xCoord, yCoord and zCoord values.
* @param tileEntity - TileEntity at the location that will represent this Coord4D
* @return the Coord4D object from the TileEntity
*/
public static Coord4D get(TileEntity tileEntity)
{
return new Coord4D(tileEntity.xCoord, tileEntity.yCoord, tileEntity.zCoord, tileEntity.getWorldObj().provider.dimensionId);
}
/**
* Returns a new Coord4D from a tag compound.
* @param data - tag compound to read from
* @return the Coord4D from the tag compound
*/
public static Coord4D read(NBTTagCompound tag)
{
return new Coord4D(tag.getInteger("x"), tag.getInteger("y"), tag.getInteger("z"), tag.getInteger("id"));
}
/**
* Returns a new Coord4D from a ByteBuf.
* @param dataStream - data input to read from
* @return the Coord4D from the data input
*/
public static Coord4D read(ByteBuf dataStream)
{
return new Coord4D(dataStream.readInt(), dataStream.readInt(), dataStream.readInt(), dataStream.readInt());
}
/**
* Creates and returns a new Coord4D with values representing the difference between the defined Coord4D
* @param other - the Coord4D to subtract from this
* @return a Coord4D representing the distance between the defined Coord4D
*/
public Coord4D difference(Coord4D other)
{
return new Coord4D(xCoord-other.xCoord, yCoord-other.yCoord, zCoord-other.zCoord, dimensionId);
}
/**
* A method used to find the ForgeDirection represented by the distance of the defined Coord4D. Most likely won't have many
* applicable uses.
* @param other - Coord4D to find the side difference of
* @return ForgeDirection representing the side the defined relative Coord4D is on to this
*/
public ForgeDirection sideDifference(Coord4D other)
{
Coord4D diff = difference(other);
for(ForgeDirection side : ForgeDirection.VALID_DIRECTIONS)
{
if(side.offsetX == diff.xCoord && side.offsetY == diff.yCoord && side.offsetZ == diff.zCoord)
{
return side;
}
}
return ForgeDirection.UNKNOWN;
}
/**
* Gets the distance to a defined Coord4D.
* @param obj - the Coord4D to find the distance to
* @return the distance to the defined Coord4D
*/
public int distanceTo(Coord4D obj)
{
int subX = xCoord - obj.xCoord;
int subY = yCoord - obj.yCoord;
int subZ = zCoord - obj.zCoord;
return (int)MathHelper.sqrt_double(subX * subX + subY * subY + subZ * subZ);
}
/**
* Whether or not the defined side of this Coord4D is visible.
* @param side - side to check
* @param world - world this Coord4D is in
* @return
*/
public boolean sideVisible(ForgeDirection side, IBlockAccess world)
{
return world.isAirBlock(xCoord+side.offsetX, yCoord+side.offsetY, zCoord+side.offsetZ);
}
/**
* Gets a TargetPoint with the defined range from this Coord4D with the appropriate coordinates and dimension ID.
* @param range - the range the packet can be sent in of this Coord4D
* @return TargetPoint relative to this Coord4D
*/
public TargetPoint getTargetPoint(double range)
{
return new TargetPoint(dimensionId, xCoord, yCoord, zCoord, range);
}
/**
* Steps this Coord4D in the defined side's offset without creating a new value.
* @param side - side to step towards
* @return this Coord4D
*/
public Coord4D step(ForgeDirection side)
{
return translate(side.offsetX, side.offsetY, side.offsetZ);
}
/**
* Whether or not the chunk this Coord4D is in exists and is loaded.
* @param world - world this Coord4D is in
* @return the chunk of this Coord4D
*/
public boolean exists(World world)
{
return world.getChunkProvider().chunkExists(xCoord >> 4, zCoord >> 4);
}
/**
* Gets the chunk this Coord4D is in.
* @param world - world this Coord4D is in
* @return the chunk of this Coord4D
*/
public Chunk getChunk(World world)
{
return world.getChunkFromBlockCoords(xCoord, zCoord);
}
/**
* Gets the Chunk3D object with chunk coordinates correlating to this Coord4D's location
* @return Chunk3D with correlating chunk coordinates.
*/
public Chunk3D getChunk3D()
{
return new Chunk3D(this);
}
/**
* Whether or not the block this Coord4D represents is an air block.
* @param world - world this Coord4D is in
* @return if this Coord4D is an air block
*/
public boolean isAirBlock(IBlockAccess world)
{
return world.isAirBlock(xCoord, yCoord, zCoord);
}
/**
* Whether or not this block this Coord4D represents is replaceable.
* @param world - world this Coord4D is in
* @return if this Coord4D is replaceable
*/
public boolean isReplaceable(IBlockAccess world)
{
return getBlock(world).isReplaceable(world, xCoord, yCoord, zCoord);
}
/**
* Gets a bounding box that contains the area this Coord4D would take up in a world.
* @return this Coord4D's bounding box
*/
public AxisAlignedBB getBoundingBox()
{
return AxisAlignedBB.getBoundingBox(xCoord, yCoord, zCoord, xCoord+1, yCoord+1, zCoord+1);
}
@Override
public Coord4D clone()
{
return new Coord4D(xCoord, yCoord, zCoord, dimensionId);
}
@Override
public String toString()
{
return "[Coord4D: " + xCoord + ", " + yCoord + ", " + zCoord + ", dim=" + dimensionId + "]";
}
@Override
public boolean equals(Object obj)
{
return obj instanceof Coord4D &&
((Coord4D)obj).xCoord == xCoord &&
((Coord4D)obj).yCoord == yCoord &&
((Coord4D)obj).zCoord == zCoord &&
((Coord4D)obj).dimensionId == dimensionId;
}
@Override
public int hashCode()
{
int code = 1;
code = 31 * code + xCoord;
code = 31 * code + yCoord;
code = 31 * code + zCoord;
code = 31 * code + dimensionId;
return code;
}
}