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# Random position in a range?

manith513 101
2 years ago

So because nobody has answered my previous question yet I am writing a new one where I have come up with a new idea that should in theory work but isn't. here is the code

local part = script.Parent

local function createblock()
local block = Instance.new("Part", game.Workspace)
local xvalue = math.random(-56.505, -99.505)
local yvalue = 35
local zvalue = math.random(104.5, 159.5)
block.Position = Vector3.new(xvalue, yvalue, zvalue)
end

while true do
createblock()
wait(.2)
end


I seems fine what it does is I have set a range with a math.random sequence so it will get a random position in a certain range. When I run it is has an error message on line 5 with the x value saying like interval is empty. I tried multiple times it didn't work. I then tooked the -99.505 and changed it to a positive number to see what would happen it worked fine just not in the range I wanted it to. Can I not have a negative then a negative number in a math.random function?

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brianush1 235
2 years ago

math.random expects the first number to be the lowest. Since -99.505 < -56.505, you should use math.random(-99.505, -56.505) instead.

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ahhh thank you manith513 101 — 2y
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Benbebop 1049
2 years ago
Edited 2 years ago

It can not sadly only the minimum number is 1 (See here), though you can just switch to positive then multiply the output by (-1) to get the range you want.

math.random(56.505, 99.505)*(-1)

Also its best to put brackets around negative numbers, not just in scripting but general mathematics.

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This is wrong brianush1 235 — 2y
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Your right, thanks. I read "math.random returns a uniform pseudo-random integer in the range [1, m]." on the page I linked and mistook it to mean that was the complete range. Benbebop 1049 — 2y
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I appreciate you trying though :) manith513 101 — 2y