087b7e7abf
This code was not tested and breaks in Release builds, reverting to restore
functionality of the nightly. All in-game menus do not work and generating
a world crashes.
This reverts commit a9be52c41a.
93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
#include "stdafx.h"
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#include <iostream>
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#include "InputOutputStream.h"
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#include "net.minecraft.world.level.h"
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#include "PacketListener.h"
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#include "TileUpdatePacket.h"
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#include "Dimension.h"
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TileUpdatePacket::TileUpdatePacket()
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{
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shouldDelay = true;
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}
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TileUpdatePacket::TileUpdatePacket(int x, int y, int z, Level *level)
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{
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shouldDelay = true;
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this->x = x;
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this->y = y;
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this->z = z;
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block = level->getTile(x, y, z);
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data = level->getData(x, y, z);
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levelIdx = ( ( level->dimension->id == 0 ) ? 0 : ( (level->dimension->id == -1) ? 1 : 2 ) );
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}
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void TileUpdatePacket::read(DataInputStream *dis) //throws IOException
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{
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#ifdef _LARGE_WORLDS
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x = dis->readInt();
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y = dis->readUnsignedByte();
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z = dis->readInt();
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block = (int)dis->readShort() & 0xffff;
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BYTE dataLevel = dis->readByte();
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data = dataLevel & 0xf;
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levelIdx = (dataLevel>>4) & 0xf;
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#else
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// 4J - See comments in write for packing
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int xyzdata = dis->readInt();
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x = ( xyzdata >> 22 ) & 0x3ff;
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y = ( xyzdata >> 14 ) & 0xff;
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z = ( xyzdata >> 4 ) & 0x3ff;
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x = ( x << 22 ) >> 22;
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z = ( z << 22 ) >> 22;
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data = xyzdata & 0xf;
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block = (int)dis->readShort() & 0xffff;
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//levelIdx = ( xyzdata >> 31 ) & 1;
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// Can't pack this as it's now 2 bits
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levelIdx = (int)dis->readByte();
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#endif
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}
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void TileUpdatePacket::write(DataOutputStream *dos) //throws IOException
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{
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#ifdef _LARGE_WORLDS
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dos->writeInt(x);
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dos->write(y);
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dos->writeInt(z);
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dos->writeShort(block);
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BYTE dataLevel = ((levelIdx & 0xf ) << 4) | (data & 0xf);
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dos->writeByte(dataLevel);
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#else
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// 4J - for our fixed size map, we can pack x & z into 10 bits each (-512 -> 511), y into 8 bits (0 to 255)
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// block type could really be 7 bits but leaving that as 8 for future ease of expansion. Data only needs to be 4-bits as that is how it
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// is ultimately stored
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int xyzdata = ( ( x & 0x3ff ) << 22 ) | ( ( y & 0xff ) << 14 ) | ( ( z & 0x3ff ) << 4 ) | ( data & 0xf);
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//xyzdata |= levelIdx << 31;
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dos->writeInt(xyzdata);
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dos->writeShort(block);
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// Can't pack this as it's now 2 bits
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dos->write(levelIdx);
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#endif
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}
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void TileUpdatePacket::handle(PacketListener *listener)
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{
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listener->handleTileUpdate(shared_from_this());
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}
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int TileUpdatePacket::getEstimatedSize()
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{
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#ifdef _LARGE_WORLDS
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return 12;
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#else
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return 5;
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#endif
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}
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