Package net.rodofire.easierworldcreator.shape.block.gen

Class LineGen

java.lang.Object

net.rodofire.easierworldcreator.shape.block.instanciator.AbstractBlockShape

net.rodofire.easierworldcreator.shape.block.gen.LineGen

public class LineGen
extends AbstractBlockShape

Class to generate line related shapes
The Main purpose of this class is to generate the coordinates based on a shape. The coordinates are organized depending on a Map<ChunkPos, LongOpenHashSet>.

It emply some things:

• The coordinates are divided in chunk
• It uses LongOpenHashSet for several reasons.
  • First, We use a set to avoid doing unnecessary calculations on the shape. It ensures that no duplicate is present.
  • Second, it compresses the BlockPos: The BlockPos are saved under long using LongPosHelper. It saves some memory since that we save four bytes of data for each BlockPos, and there should not have overhead since that we use primitive data type.
  • Third, since that we use primitive data types and that they take less memory, coordinate generation, accession or deletion is much faster than using a Set<BlockPos>. Encoding and decoding blockPos and then adding it into LongOpenHashSetis extremely faster compared to only adding a BlockPos. ~60- 70% facter.

Dividing Coordinates into Chunk has some advantages :

• allow a multithreaded block assignement when using LayerManager
• allow to be used during WG, when using DividedBlockListManager or when placing using ShapePlacer

Field Summary

Fields inherited from class net.rodofire.easierworldcreator.shape.block.instanciator.AbstractBlockShape

centerPos, centerX, centerY, centerZ, chunkMap, covered, lastChunkX, lastChunkZ, rotator

Constructor Summary

Constructors

Constructor	Description
LineGen(@NotNull net.minecraft.util.math.BlockPos pos, net.minecraft.util.math.BlockPos secondPos)	init the Line Shape
LineGen(@NotNull net.minecraft.util.math.BlockPos pos, Rotator rotator, net.minecraft.util.math.BlockPos secondPos)	init the Line Shape

Method Summary

Modifier and Type	Method	Description
it.unimi.dsi.fastutil.longs.LongOpenHashSet	getCoveredChunks()	Method to know the chunks that will be covered by the shape.
Map<net.minecraft.util.math.ChunkPos,it.unimi.dsi.fastutil.longs.LongOpenHashSet>	getShapeCoordinates()	method to get the coordinates that will be placed later
void	setSecondPos(net.minecraft.util.math.BlockPos secondPos)

Methods inherited from class net.rodofire.easierworldcreator.shape.block.instanciator.AbstractBlockShape

modifyChunkMap, setRotator, shouldAddChunk, shouldAddChunkPrecomputedX

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

LineGen

public LineGen(@NotNull
 @NotNull net.minecraft.util.math.BlockPos pos,
 Rotator rotator,
 net.minecraft.util.math.BlockPos secondPos)

init the Line Shape

Parameters:

pos - the position of the start of the line

secondPos - the second pos on which the line has to go

LineGen

public LineGen(@NotNull
 @NotNull net.minecraft.util.math.BlockPos pos,
 net.minecraft.util.math.BlockPos secondPos)

init the Line Shape

Parameters:

pos - the position of the start of the line

secondPos - the second pos on which the line has to go

Method Details

setSecondPos

public void setSecondPos(net.minecraft.util.math.BlockPos secondPos)

getShapeCoordinates

public Map<net.minecraft.util.math.ChunkPos,it.unimi.dsi.fastutil.longs.LongOpenHashSet> getShapeCoordinates()

Description copied from class: AbstractBlockShape

method to get the coordinates that will be placed later

Specified by:

getShapeCoordinates in class AbstractBlockShape

Returns:

a map of ChunkPos of blockPos for every shape

getCoveredChunks

public it.unimi.dsi.fastutil.longs.LongOpenHashSet getCoveredChunks()

Description copied from class: AbstractBlockShape

Method to know the chunks that will be covered by the shape. This avoids generating all the structure, enhancing performance

Specified by:

getCoveredChunks in class AbstractBlockShape

Returns:

a set of chunkPos. For performance reasons, we use long instead of ChunkPos.

To convert the long into a ChunkPos, use the long in a constructor.