[Question] - How to properly randomize the turret upgrade slot

[Enzo Matrix]

So I thought it would be more interesting to have the turret upgrades have a randomized amount rather than a set number. I have only partially managed this but it comes out to large decimal numbers lol.

 

The current code is this.

function getNumTurrets(seed, rarity)
    return math.max(1, rarity.value + 1)
end

 

I tried this

 

function getNumTurrets(seed, rarity)
    return math.random() * (rarity.value + 1) * 1.5

 

While I had a randomized upgrade it is giving like +3.123433, +3.6346444 .. etc lol

I know I am incorrectly just slapping this code on and asking for help from the experienced ones to aid me into getting whole numbers and a range based on rarity.

 

Something like, exotic turret can have 4-7, legendary can have 5-9, and if possible make it rarer to get the higher upgrade numbers

Would be neat to make turret upgrades have a variable to them.

[Laserzwei]

math.random() provides numbers between and including 0-1. To avoid decimal places use math.floor() or math.ceil().

with your current formula you will also get a problem when math.random() returns 0.

 

I suggest using such an formula:

 

rarity.value + math.floor(math.random() * rarity.value/2)

this will provide such an distribution:

min-max

0: 0-0

1: 1-1

2: 2-3

3: 3-4

4: 4-6

5: 5-7

6: 6-9

7: 7-10

With the number before ":" refering to the numerical rarity value. I can't remember if it starts with 0 or 1. the formula might need to be fitted in that case.

[Enzo Matrix]

Awesome thank you :) I will try this out in the morning!

[Enzo Matrix]

Hmm so this didn't quite work, it was getting between 5-7 on legendary however it's also constantly randomizing each time you take out the upgrade and put another one in and both upgrades will randomize again between 5-7 turrets. That's an odd one why that happens?

[Laserzwei]

assuming you placed the code in

function getNumTurrets(seed, rarity)

Then this function gets called every time you place the turretmodule.

maybe this helps:

on top of the file:

local numTurrets = nil

and

function getNumTurrets(seed, rarity)
    numTurrets = numTurrets or rarity.value + math.floor(math.random() * rarity.value/2)
    return numTurrets
end

Edit: this code is not tested and might not work properly. Test if it stays constant after restarts.

[infal]

If you want math.random() to return the same value each time for any module, you need to set the seed.

 

function getNumTurrets(seed, rarity)
    math.randomseed(seed)
    local someRand = math.random()