Parker2991/node-minecraft-protocol
1
0
Fork 0
mirror of https://github.com/PrismarineJS/node-minecraft-protocol.git synced 2024-12-02 12:06:53 -05:00
Code Issues Projects Releases Packages Wiki Activity

slightly cleaner readPosition

Browse source
This commit is contained in:
Josh Wolfe 2015-03-26 18:47:46 -07:00
parent 158beb3cc3
commit 23945f54c3
1 changed files with 12 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
src/protocol.js
View file

@ -1095,18 +1095,23 @@ function readBool(buffer, offset) {
} }
function readPosition(buffer, offset) { function readPosition(buffer, offset) {
var longVal = readLong(buffer, offset).value; // I wish I could do destructuring... var longVal = readLong(buffer, offset).value;
var x = longVal[0] >> 6; var x = signExtend26(longVal[0] >> 6);
if(x>33554432) x-=67108864; var y = signExtend12(((longVal[0] & 0x3f) << 6) | ((longVal[1] >> 26) & 0x3f));
var y = ((longVal[0] & 0x3F) << 6) | ((longVal[1] >> 26) & 0x3f); var z = signExtend26(longVal[1] & 0x3FFFFFF);
if(y>2048) y-=4096;
var z = longVal[1] & 0x3FFFFFF;
if(z>33554432) z-=67108864;
return { return {
value: { x: x, y: y, z: z }, value: { x: x, y: y, z: z },
size: 8 size: 8
}; };
} }
function signExtend26(value) {
if (value > 0x2000000) value -= 0x4000000;
return value;
}
function signExtend12(value) {
if (value > 0x800) value -= 0x1000;
return value;
}
function readSlot(buffer, offset) { function readSlot(buffer, offset) {
var value = {}; var value = {};