Lua math.random not working

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You need to run math.randomseed() once before using math.random(), like this:

math.randomseed(os.time())

One possible problem is that the first number may not be so “randomized” in some platforms. So a better solution is to pop some random number before using them for real:

math.randomseed(os.time())
math.random(); math.random(); math.random()

Reference: Lua Math Library

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