Help on previous question crates else if?

I have so many questions this project I abandoned by I really want to head back to it but I need some really good explaining I have discord skype if it needs to come to that I need to know a few things

• what is the difference between else if and elseif

• math.randomseed something like that or math.random is based off a seed??

• as I remember I also had problems with the tables some where please help it wi.ll mean a lot and I will for sure put your name in the game I have huge plans for this game

here is the link to the previous question you can comment there please?

https://scriptinghelpers.org/questions/36070/legendary-crate-only-it-wont-change-to-any-other-crate-help

###Difference between else if and elseif

To more clearly see what is going on when you type 'else if', you should separate it onto separate lines (yes this can, and for clarity probably should, be represented on multiple lines):

This:

else if condition then [CODE] end
end

Is the same as:

else
	if condition then
		[CODE]
	end
end

In the end 'elseif' and 'else if' should have no logical difference (just cascading vs nested if-else statements), however in Lua it is easy to stumble on putting the correct amount of 'end's if you use 'else if' (so i suggest using 'elseif').

###Random and Randomseed

The random function works by determining a random number using the previously found random number, therefore it must start at a certain number. This number is called the 'seed'. What you will find is that if you give the pseudo-random number generator the same seed, it will generate the same sequence of numbers.

This can be very helpful if you want to re-simulate an event, but not so nice if you want something different to happen each time you start the game, for instance. The way around this is to set the seed, using the randomseed function, to something different each time you start the game. A common way to do this is using the following line:

math.randomseed(tick())

Tables Help

As for tables, your question was not clear. Check out this wiki article on tables, hopefully it will clear things up.

Edit 1

The 'tick' function does deal with time, which is why we use it as a seed. Time is always increasing, therefore it will be a different number each time we use it as a seed. So when we write math.randomseed(tick()), the seed will be different every time.

As for your problem, choosing a random crate would be quite easy. You just have to choose a random number between 1 and the number of crates and get the crate and that index in the table.

local crates = {"Common", "Uncommon", "Rare", "Ultrarare", "Epic", "Legendary"}

math.randomseed(tick())

script.Parent.MouseButton1Click:connect(function()
	local crateName = crates[math.random(#crates)]
	local crate = game.ServerStorage.Crates[crateName]:Clone()
	-- Do what you wish with the crate
end)

For your particular case, I do not think you want completely random crate drops. That would mean you have the same chance of getting Legendary crates as you do Common ones. One way to fix this is to give each crate a probability of being selected. In my case, I made all the probabilities add up to 100 (think percentages), so I'll generate a random number between 0 and 100 (math.random()*100). Then I simply compare to see which crate should be chosen:

local crates = {"Common", "Uncommon", "Rare", "Ultrarare", "Epic", "Legendary"}
local probability = {50, 25, 10, 7.5, 5, 2.5}
local player = game.Players.LocalPlayer

script.Parent.MouseButton1Click:connect(function()
	local randNum = math.random()*100
	local num = 0
	local key
	for index, value in ipairs(probability) do
		num = num + value
		if num > randNum then
			key = index
			break
		end
	end
	local crateName = crates[math.random(#crates)]
	local crate = game.ServerStorage.Crates[crateName]:Clone()
	-- Do what you wish with the crate
end)

This is by no means the only way to accomplish this, just a way I know that will work. I ran the function 1000 times, these are the crates I got:

Common: 515
Uncommon: 241
Rare: 109
Ultrarare: 69
Epic: 41
Legendary: 25

You can adjust the percentages to your liking, just make sure that randNum can't be bigger than the sum of the probabilities