love.math.noise

[dalmuti]

Code: Select all

	for i=1, 10, do
		value = love.math.noise(i)
		print(value)
	end

I'm trying to create a Perlin noise function. From what I gathered this is a build in function in lua that given an x value it returns a value between 0 and 1, but when I run the loop above I get the same value of .5 for every i variable input into the function. Am I wrong to think that this can be substituted instead of the random number generator? and why I cant get different values when inputting i into love.math.noise(i)?

[Robin]

What if you try love.math.noise(i/10) ?

[Zarty55]

I've had the same problem as you.

https://bitbucket.org/account/notificat ... -arguments

The solution is to pass non-integer values to the function.

[dalmuti]

thanks for the help, ironed out a few things with that, but i'm running into the issue that when I close the program and reopen it I get the same values. How can I have a random set of numbers each time?

[zorg]

Try multiplying it with love.math.random.

[slime]

noise is supposed to give the same output given the same input. You could add an offset to the arguments which is randomized at startup. Something like this:

Code: Select all

function love.load()
    local offset = love.math.random() * 100000
    for i=1, 10 do
        local value = love.math.noise(offset + i / 10)
    end
end