mirror of
https://github.com/unmojang/node-minecraft-protocol.git
synced 2025-09-29 14:13:45 -04:00
add minecraft datatype file for minecraft specific packets
This commit is contained in:
Romain Beaumont
parent
6f460e1626
commit
3b7ae54b88
138
src/datatypes/minecraft.js
Normal file
138
src/datatypes/minecraft.js
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@ -0,0 +1,138 @@
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var nbt = require('prismarine-nbt');
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var utils = require("./utils");
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var numeric = require("./numeric");
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module.exports = {
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'UUID': [readUUID, writeUUID, 16],
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'position': [readPosition, writePosition, 8],
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'slot': [readSlot, writeSlot, sizeOfSlot],
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'nbt': [readNbt, utils.buffer[1], utils.buffer[2]]
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};
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function readUUID(buffer, offset) {
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return {
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value: [
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buffer.readUInt32BE(offset),
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buffer.readUInt32BE(offset + 4),
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buffer.readUInt32BE(offset + 8),
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buffer.readUInt32BE(offset + 12),
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],
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size: 16,
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};
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}
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function writeUUID(value, buffer, offset) {
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buffer.writeUInt32BE(value[0], offset);
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buffer.writeUInt32BE(value[1], offset + 4);
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buffer.writeUInt32BE(value[2], offset + 8);
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buffer.writeUInt32BE(value[3], offset + 12);
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return offset + 16;
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}
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function readPosition(buffer, offset) {
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var longVal = numeric.long[0](buffer, offset).value;
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var x = signExtend26(longVal[0] >> 6);
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var y = signExtend12(((longVal[0] & 0x3f) << 6) | ((longVal[1] >> 26) & 0x3f));
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var z = signExtend26(longVal[1] & 0x3FFFFFF);
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return {
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value: { x: x, y: y, z: z },
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size: 8
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};
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}
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function signExtend26(value) {
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if (value > 0x2000000) value -= 0x4000000;
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return value;
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}
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function signExtend12(value) {
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if (value > 0x800) value -= 0x1000;
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return value;
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}
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function writePosition(value, buffer, offset) {
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var longVal = [];
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longVal[0] = ((value.x & 0x3FFFFFF) << 6) | ((value.y & 0xFFF) >> 6);
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longVal[1] = ((value.y & 0x3F) << 26) | (value.z & 0x3FFFFFF);
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return numeric.long[1](longVal, buffer, offset);
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}
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function readSlot(buffer, offset) {
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var value = {};
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var results = numeric.short[0](buffer, offset);
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if (! results) return null;
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value.blockId = results.value;
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if (value.blockId === -1) {
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return {
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value: value,
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size: 2,
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};
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}
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var cursorEnd = offset + 6;
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if (cursorEnd > buffer.length) return null;
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value.itemCount = buffer.readInt8(offset + 2);
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value.itemDamage = buffer.readInt16BE(offset + 3);
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var nbtData = buffer.readInt8(offset + 5);
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if (nbtData == 0) {
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return {
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value: value,
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size: 6
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}
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}
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var nbtData = readNbt(buffer, offset + 5);
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value.nbtData = nbtData.value;
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return {
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value: value,
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size: nbtData.size + 5
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};
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}
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function writeSlot(value, buffer, offset) {
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buffer.writeInt16BE(value.blockId, offset);
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if (value.blockId === -1) return offset + 2;
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buffer.writeInt8(value.itemCount, offset + 2);
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buffer.writeInt16BE(value.itemDamage, offset + 3);
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var nbtDataLen;
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if (value.nbtData)
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{
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var newbuf = nbt.writeUncompressed(value.nbtData);
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newbuf.copy(buffer, offset + 5);
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nbtDataLen = newbuf.length;
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}
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else
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{
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buffer.writeInt8(0, offset + 5);
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nbtDataLen = 1;
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}
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return offset + 5 + nbtDataLen;
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}
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function sizeOfSlot(value) {
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if (value.blockId === -1)
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return (2);
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else if (!value.nbtData) {
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return (6);
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} else {
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return (5 + sizeOfNbt(value.nbtData));
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}
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}
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function readNbt(buffer, offset) {
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buffer = buffer.slice(offset);
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return nbt.parseUncompressed(buffer);
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}
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function writeNbt(value, buffer, offset) {
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var newbuf = nbt.writeUncompressed(value);
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newbuf.copy(buffer, offset);
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return offset + newbuf.length;
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}
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function sizeOfNbt(value) {
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return nbt.writeUncompressed(value).length;
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}
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168
src/protocol.js
168
src/protocol.js
@ -1,7 +1,6 @@
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var assert = require('assert');
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var util = require('util');
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var zlib = require('zlib');
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var nbt = require('prismarine-nbt');
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var getField= require("./utils").getField;
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@ -53,6 +52,7 @@ var packetStates = {toClient: {}, toServer: {}};
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var numeric=require("./datatypes/numeric");
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var utils=require("./datatypes/utils");
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var minecraft=require("./datatypes/minecraft");
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var types = {
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'byte': numeric.byte,
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@ -66,17 +66,17 @@ var types = {
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'double': numeric.double,
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'bool': utils.bool,
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'string': utils.string,
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'ustring': utils.ustring, // TODO : remove ustring
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'UUID': [readUUID, writeUUID, 16],
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'ustring': utils.ustring,
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'UUID': minecraft.UUID,
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'container': [readContainer, writeContainer, sizeOfContainer],
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'array': [readArray, writeArray, sizeOfArray],
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'buffer': utils.buffer,
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'restBuffer': [readRestBuffer, utils.buffer[1], utils.buffer[2]],
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'count': [readCount, writeCount, sizeOfCount],
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// TODO : remove type-specific, replace with generic containers and arrays.
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'position': [readPosition, writePosition, 8],
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'slot': [readSlot, writeSlot, sizeOfSlot],
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'nbt': [readNbt, utils.buffer[1], utils.buffer[2]],
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'position': minecraft.position,
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'slot': minecraft.slot,
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'nbt': minecraft.nbt,
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'entityMetadata': [readEntityMetadata, writeEntityMetadata, sizeOfEntityMetadata],
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'condition': [readCondition, writeCondition, sizeOfCondition]
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};
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@ -154,35 +154,6 @@ function evalCondition(condition,field_values)
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return b;
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}
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function sizeOfEntityMetadata(value) {
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var size = 1 + value.length;
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var item;
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for (var i = 0; i < value.length; ++i) {
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item = value[i];
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size += sizeOf(item.value, entityMetadataTypes[entityMetadataTypeBytes[item.type]], {});
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}
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return size;
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}
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function writeEntityMetadata(value, buffer, offset) {
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value.forEach(function(item) {
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var type = entityMetadataTypeBytes[item.type];
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var headerByte = (type << 5) | item.key;
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buffer.writeUInt8(headerByte, offset);
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offset += 1;
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offset = write(item.value, buffer, offset, entityMetadataTypes[type], {});
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});
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buffer.writeUInt8(0x7f, offset);
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return offset + 1;
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}
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function writeUUID(value, buffer, offset) {
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buffer.writeUInt32BE(value[0], offset);
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buffer.writeUInt32BE(value[1], offset + 4);
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buffer.writeUInt32BE(value[2], offset + 8);
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buffer.writeUInt32BE(value[3], offset + 12);
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return offset + 16;
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}
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function readEntityMetadata(buffer, offset) {
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var cursor = offset;
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@ -219,119 +190,30 @@ function readEntityMetadata(buffer, offset) {
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}
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}
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function readNbt(buffer, offset) {
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buffer = buffer.slice(offset);
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return nbt.parseUncompressed(buffer);
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function writeEntityMetadata(value, buffer, offset) {
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value.forEach(function(item) {
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var type = entityMetadataTypeBytes[item.type];
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var headerByte = (type << 5) | item.key;
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buffer.writeUInt8(headerByte, offset);
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offset += 1;
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offset = write(item.value, buffer, offset, entityMetadataTypes[type], {});
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});
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buffer.writeUInt8(0x7f, offset);
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return offset + 1;
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}
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function writeNbt(value, buffer, offset) {
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var newbuf = nbt.writeUncompressed(value);
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newbuf.copy(buffer, offset);
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return offset + newbuf.length;
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}
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function sizeOfNbt(value) {
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return nbt.writeUncompressed(value).length;
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}
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function readUUID(buffer, offset) {
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return {
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value: [
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buffer.readUInt32BE(offset),
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buffer.readUInt32BE(offset + 4),
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buffer.readUInt32BE(offset + 8),
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buffer.readUInt32BE(offset + 12),
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],
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size: 16,
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};
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}
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function readPosition(buffer, offset) {
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var longVal = numeric.long[0](buffer, offset).value;
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var x = signExtend26(longVal[0] >> 6);
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var y = signExtend12(((longVal[0] & 0x3f) << 6) | ((longVal[1] >> 26) & 0x3f));
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var z = signExtend26(longVal[1] & 0x3FFFFFF);
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return {
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value: { x: x, y: y, z: z },
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size: 8
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};
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}
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function signExtend26(value) {
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if (value > 0x2000000) value -= 0x4000000;
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return value;
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}
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function signExtend12(value) {
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if (value > 0x800) value -= 0x1000;
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return value;
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}
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function readSlot(buffer, offset) {
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var value = {};
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var results = numeric.short[0](buffer, offset);
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if (! results) return null;
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value.blockId = results.value;
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if (value.blockId === -1) {
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return {
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value: value,
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size: 2,
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};
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function sizeOfEntityMetadata(value) {
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var size = 1 + value.length;
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var item;
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for (var i = 0; i < value.length; ++i) {
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item = value[i];
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size += sizeOf(item.value, entityMetadataTypes[entityMetadataTypeBytes[item.type]], {});
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}
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var cursorEnd = offset + 6;
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if (cursorEnd > buffer.length) return null;
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value.itemCount = buffer.readInt8(offset + 2);
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value.itemDamage = buffer.readInt16BE(offset + 3);
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var nbtData = buffer.readInt8(offset + 5);
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if (nbtData == 0) {
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return {
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value: value,
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size: 6
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}
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}
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var nbtData = readNbt(buffer, offset + 5);
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value.nbtData = nbtData.value;
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return {
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value: value,
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size: nbtData.size + 5
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};
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}
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function sizeOfSlot(value) {
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if (value.blockId === -1)
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return (2);
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else if (!value.nbtData) {
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return (6);
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} else {
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return (5 + sizeOfNbt(value.nbtData));
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}
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}
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function writePosition(value, buffer, offset) {
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var longVal = [];
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longVal[0] = ((value.x & 0x3FFFFFF) << 6) | ((value.y & 0xFFF) >> 6);
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longVal[1] = ((value.y & 0x3F) << 26) | (value.z & 0x3FFFFFF);
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return numeric.long[1](longVal, buffer, offset);
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}
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function writeSlot(value, buffer, offset) {
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buffer.writeInt16BE(value.blockId, offset);
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if (value.blockId === -1) return offset + 2;
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buffer.writeInt8(value.itemCount, offset + 2);
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buffer.writeInt16BE(value.itemDamage, offset + 3);
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var nbtDataLen;
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if (value.nbtData)
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{
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var newbuf = nbt.writeUncompressed(value.nbtData);
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newbuf.copy(buffer, offset + 5);
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nbtDataLen = newbuf.length;
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}
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else
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{
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buffer.writeInt8(0, offset + 5);
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nbtDataLen = 1;
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}
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return offset + 5 + nbtDataLen;
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return size;
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}
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