Re: Re: pack/unpack pos to binar
function packpos(x, y, z)
x = 819200+math.floor(x*100) -- -8192 - 8192 3 byte
y = 819200+math.floor(y*100)
z = math.floor(1300*65535/(z+100)) -- -100 - 1200 2 byte
return string.char(
x, bitExtract(x, 8, 8), bitExtract(x, 16, 8)
y, bitExtract(y, 8, 8), bitExtract(x, 16, 8),
z, bitExtract(z, 8, 8))
end
function unpackpos(string, startindex)
local x1, x2, x3, y1, y2, y3, z1, z2 = string:byte(startindex, startindex + 7)
return ((x1 + x2*256 + x3*65536) - 819200)/100,
((y1 + y2*256 + y3*65536) - 819200)/100,
(z1 + z2*256)/65535*1300 - 100
end
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