35 lignes
1,4 Kio
Lua
35 lignes
1,4 Kio
Lua
QuestHelper_File["collect_location.lua"] = "1.4.0"
|
|
QuestHelper_Loadtime["collect_location.lua"] = GetTime()
|
|
|
|
-- little endian two's complement
|
|
local function signed(c)
|
|
QuestHelper: Assert(not c or c >= -127 and c < 127)
|
|
if not c then c = -128 end
|
|
if c < 0 then c = c + 256 end
|
|
return strchar(c)
|
|
end
|
|
|
|
local function float(c)
|
|
if c then
|
|
c = math.floor(c * 16777216 + 0.5) -- 24 bits of fraction baby
|
|
QuestHelper: Assert(c >= -2147483647 and c < 2147483647)
|
|
else
|
|
c = -2147483648
|
|
end
|
|
if c < 0 then c = c + 4294967296 end
|
|
return strchar(bit.band(c, 0xff), bit.band(c, 0xff00) / 256, bit.band(c, 0xff0000) / 65536, bit.band(c, 0xff000000) / 16777216)
|
|
end
|
|
|
|
local function BolusizeLocation(delayed, c, z, x, y)
|
|
-- c and z are *signed* integers that fit within an 8-bit int.
|
|
-- x and y are floating-point values, generally between 0 and 1. We'll dedicate 24 bits to the fractional part, largely because we can.
|
|
-- Overall we're using a weird 11 bytes on this. Meh.
|
|
-- Also, any nil values are being turned into MIN_WHATEVER.
|
|
return signed(delayed and 1 or 0) .. signed(c) .. signed(z) .. float(x) .. float(y)
|
|
end
|
|
|
|
-- This merely provides another API function
|
|
function QH_Collect_Location_Init(_, API)
|
|
API.Callback_LocationBolus = BolusizeLocation -- Yeah. *Bolusize*. You heard me.
|
|
API.Callback_LocationBolusCurrent = function () return BolusizeLocation(API.Callback_Location_Raw()) end -- This is just a convenience function, really
|
|
end
|