Math.random()

[spynaz]

Is there are way to receive a random number WITH a decimal between 2 numbers? Example: math.random(1, 10) = 5.381298317

[slime]

This will give you a number between 1 and 10:

Code: Select all

1 + (math.random() * 9)

[spynaz]

This will give you a number between 1 and 10:

Code: Select all

1 + (math.random() * 9)

Can't you just do this?

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math.random()*10

[slime]

You can, but it'll give you a number in the range of [0, 10] instead of [1, 10] (the latter being what your example asked for.)

[spynaz]

Ok.

[slime]

You could make a function out of it, as well:

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function newRandom(min, max)
    return min + math.random() * (max - min)
end

[kikito]

Hmm... guys, according to the lua-users wiki,

• math.random() with no arguments generates a real number between 0 and 1.
• math.random(upper) generates integer numbers between 1 and upper.
• math.random(lower, upper) generates integer numbers between lower and upper.

I just tried it and it seems to work that way.

[Plu]

That's what all their code samples use as well, though? Unless you think there's a problem?

[Ragzouken]

spynaz wanted real numbers in the range, those give you integers

[T-Bone]

You could do

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math.random(max-1) + math.random()

too, but there's rarely a point in that.