26 lines
626 B
Lua
26 lines
626 B
Lua
local function areaOverlap(x, y, areaX, areaY, areaW, areaH)
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return x > areaX and y > areaY and x < areaX + areaW and y < areaY + areaH
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end
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--modulo operation for index value
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local function modIndex(index, mod)
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return (index - 1) % mod + 1
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end
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local function firstAlphaNum(s)
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for i = 1, string.len(s) do
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local byte = string.byte(s, i);
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if ((byte >= 65 and byte <= 90) or (byte >= 97 and byte <= 122) or (byte >= 48 and byte <= 57)) then
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return string.sub(s, i, i);
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end
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end
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return '';
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end
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return {
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areaOverlap = areaOverlap,
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modIndex = modIndex,
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firstAlphaNum = firstAlphaNum,
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}
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