42 lignes
1,7 Kio
Lua
42 lignes
1,7 Kio
Lua
QuestHelper_File["collect_location.lua"] = "4.0.1.$svnversion$"
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QuestHelper_Loadtime["collect_location.lua"] = GetTime()
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-- little endian two's complement
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local function signed(c)
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QuestHelper: Assert(not c or c >= -127 and c < 127)
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if not c then c = -128 end
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if c < 0 then c = c + 256 end
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return c
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--return strchar(c)
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end
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local function float(c)
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if not c then c = -128 end
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QuestHelper: Assert( c >= -128, string.format("c is too small. It is %s.", tostring(c)))
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QuestHelper: Assert( c < 128, string.format("c is too big. It is %s.", tostring(c)))
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return c
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end
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local function BolusizeLocation(delayed, c, z, x, y)
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-- c and z are *signed* integers that fit within an 8-bit int.
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-- 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.
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-- Overall we're using a weird 11 bytes on this. Meh.
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-- Also, any nil values are being turned into MIN_WHATEVER.
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local float_x = float(x)
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local float_y = float(y)
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local loc = {}
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loc["delayed"] = signed(delayed and 1 or 0)
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loc["c"] = signed(c)
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loc["z"] = signed(z)
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loc["x"] = float_x
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loc["y"] = float_y
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return loc;
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--return string.format("%s,%s,%s,%s,%s", signed(delayed and 1 or 0), signed(c), signed(z), float_x, float_y)
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--return signed(delayed and 1 or 0) .. signed(c) .. signed(z) .. float_x .. float_y
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end
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-- This merely provides another API function
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function QH_Collect_Location_Init(_, API)
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API.Callback_LocationBolus = BolusizeLocation -- Yeah. *Bolusize*. You heard me.
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API.Callback_LocationBolusCurrent = function () return BolusizeLocation(API.Callback_Location_Raw()) end -- This is just a convenience function, really
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end
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