mffs/src/main/java/mffs/ManipulatorHelper.java

package mffs;

import net.minecraft.block.Block;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.World;
import net.minecraft.world.chunk.Chunk;
import net.minecraft.world.chunk.storage.ExtendedBlockStorage;
import universalelectricity.core.vector.Vector3;

public class ManipulatorHelper {
  public static void setBlockSneaky(final World world, final Vector3 position,
                                    final Block id, final int metadata,
                                    final TileEntity tileEntity) {
    final Chunk chunk = world.getChunkFromChunkCoords(position.intX() >> 4,
                                                      position.intZ() >> 4);
    final Vector3 chunkPosition = new Vector3(
        position.intX() & 0xF, position.intY() & 0xF, position.intZ() & 0xF);
    final int heightMapIndex = chunkPosition.intZ() << 4 | chunkPosition.intX();
    if (position.intY() >= chunk.precipitationHeightMap[heightMapIndex] - 1) {
      chunk.precipitationHeightMap[heightMapIndex] = -999;
    }
    final int heightMapValue = chunk.heightMap[heightMapIndex];
    world.removeTileEntity(position.intX(), position.intY(), position.intZ());
    ExtendedBlockStorage extendedBlockStorage =
        chunk.getBlockStorageArray()[position.intY() >> 4];
    if (extendedBlockStorage == null) {
      extendedBlockStorage = new ExtendedBlockStorage(position.intY() >> 4 << 4,
                                                      !world.provider.hasNoSky);
      chunk.getBlockStorageArray()[position.intY() >> 4] = extendedBlockStorage;
    }
    extendedBlockStorage.func_150818_a(
        chunkPosition.intX(), chunkPosition.intY(), chunkPosition.intZ(), id);
    extendedBlockStorage.setExtBlockMetadata(chunkPosition.intX(),
                                             chunkPosition.intY(),
                                             chunkPosition.intZ(), metadata);
    if (position.intY() >= heightMapValue) {
      chunk.generateSkylightMap();
    } else {
      if (chunk.func_150808_b(chunkPosition.intX(), position.intY(),
                              chunkPosition.intZ()) > 0) {
        if (position.intY() >= heightMapValue) {
          relightBlock(chunk,
                       Vector3.add(chunkPosition, new Vector3(0.0, 1.0, 0.0)));
        }
      } else if (position.intY() == heightMapValue - 1) {
        relightBlock(chunk, chunkPosition);
      }
      propagateSkylightOcclusion(chunk, chunkPosition);
    }
    chunk.isModified = true;
    world.func_147451_t(position.intX(), position.intY(), position.intZ());
    if (tileEntity != null) {
      world.setTileEntity(position.intX(), position.intY(), position.intZ(),
                          tileEntity);
    }
    world.markBlockForUpdate(position.intX(), position.intY(), position.intZ());
  }

  public static void relightBlock(final Chunk chunk, final Vector3 position) {
    chunk.relightBlock(position.intX(), position.intY(), position.intZ());
  }

  public static void propagateSkylightOcclusion(final Chunk chunk,
                                                final Vector3 position) {
    chunk.propagateSkylightOcclusion(position.intX(), position.intZ());
  }
}