Creating a Coin Collection System
A tutorial by @LoveTheBears101
Hello friends. Over the years (or months, I’m not really sure how long I’ve been on the Dev Forum) I have seen a bunch of posts asking how to create coin collection systems. So here, I’m going to make a tutorial on making a coin collection system. This will include:
- Randomly spawning coins
- A
leaderstatvalue in the leaderboard that counts the number of coins the player collected
In this tutorial, we are going to go over:
-
.Touchedevent leaderstats- Random numbers
Let’s get started!
Step 1: Creating the coin
First, we need to create the coin. You can make the coin however you would like, but I’m going to make mine New Yeller (RGB: 255, 255, 0) with the material Metal. I also added a Surface Gui with a text label on it, if you don’t know what that is you can find Dev Hub articles about them here: Surface Guis and Text Label.
If you would like to use my coin to follow along, you can get it here: https://www.roblox.com/library/4989617656/Coin
Step 2: Finishing the coin
Now that we have created the coin, make sure the coin is Anchored, named Coin, and has CanCollide set to false.
Then, put it inside Server Storage.
Step 3: Setting up the leaderstats
Now that we have our coin, let’s create the leaderstats. Let’s start by creating a script inside of the workspace.
When a player has a folder named leaderstats inside of it, all the values inside of the folder is put into the leaderboard. So we need to make it so whenever a player spawns, it creates a folder named leaderstats inside of them and creates an IntValue named “Coins” inside of the folder.
We will do this by putting this inside the script:
local players = game:GetService("Players")
function playerSpawned(player)
local leaderstats = Instance.new("Folder", player)
leaderstats.Name = "leaderstats"
local coins = Instance.new("IntValue", leaderstats)
coins.Name = "Coins"
coins.Value = 0
end
players.PlayerAdded:Connect(playerSpawned)
The function playerSpawned runs every time a player is added because we connected it to the PlayerAdded event. It creates a folder named ‘leaderstats’ inside the player and an Int Value named ‘Coins’ inside of the folder. Once you add this script, hit Play. You should see something like this (but with your username, of course):
Step 4: Setting up the coins
Now, we need it so when the player hits the coin, it adds one to their Coins or if you want to, you can make it add more than one for every coin so players get rich faster. We do this by creating a script inside the coin that says this:
local player = game:GetService("Players")
local coin = script.Parent -- Path to coin
local used = false
function giveCoin(part)
if part.Parent:FindFirstChild("Humanoid") == nil or used == true then
return
end
used = true
local player = player:GetPlayerFromCharacter(part.Parent)
player.leaderstats.Coins.Value = player.leaderstats.Coins.Value + 1
coin:Destroy()
end
coin.Touched:Connect(giveCoin)
The function giveCoin runs every time the part is touched because we connected it to the Touched
The if...then loop checks to make sure the part that touched it is part of a character, and the used variable is whether the coin already has been used yet. After the function runs, it destroys the coin (and the script because the script is inside the coin).
Common Mistake: One of the most common mistakes with
IntValuesandString Valuesis people forget to doobject.Valueto change the value. This is bad because instead of changing the value of the object, it will try to change the object, which will cause an error.
Which script is correct if the script is inside of anInt Value?
a)script.Parent.Value = 123
b)script.Parent = 123
The correct answer is: (a)
Step 5: Spawning the coins
Now, we need the coins to spawn at random positions. Put this script in the workspace:
local coin = game.ServerStorage.Coin -- Path to coin
while true do
local clone = coin:Clone()
clone.Parent = game.Workspace
clone.Position = Vector3.new(math.random(-226, 234), 2.834, math.random(-230, 231))
wait(math.random(1, 5))
end
The while true do loop repeats forever. The script clones the coin inside of Server Storage, puts it in the workspace, and puts it in a random position. You may need the adjust the math.randoms according to your baseplate’s size. The y position is not random because we want to make sure the player can get to it always.
Common Mistake:
while true docreates an infinite loop. However, if you don’t put await()in the infinite loop, it will cause an error because it will run the loop infinity with no cool down.
Now, Run your program! It should randomly spawn coins that increase the Coins leaderstat value when you touch them!
You can get the entire file here: CoinCollector.rbxl (100 TB jk it’s only 21.4 KB)
Bonus Lesson: Using Tween Service to make your coins spin!
If you want your coins to spin around in an infinite circle, you can use Tween Service.
But what does Tween Service do?
Great question. Tween service creates tweens that:
So we need to use TweenService:Create() to create a tween. Put this script inside of the coin (Which is inside of Server Storage):
local TweenService = game:GetService("TweenService")
local coin = script.Parent
local goal = {}
goal.Orientation = Vector3.new(0,360,0)
local tweenInfo = TweenInfo.new(2, Enum.EasingStyle.Linear, Enum.EasingDirection.In, 2, false, 0)
local tween = TweenService:Create(coin, tweenInfo, goal)
while true do
tween:Play()
tween.Completed:Wait()
end
Note
Tweening parts to make them rotate is difficult. I would like to thank @jordanetoile1 for help with the rotating script from this post: Link to Devforum question about tweening.
The script uses tween service to make the coin spin. I’m not an expert on tweening parts, so if you want more info on how to do this, check out the def hub article above.
It should look like this when spinning:
Congrats! You finished this tutorial!
Or maybe you just skipped to the end and didn’t read anything lol.
The completed finished version can be found here:
CoinCollectorCompleted.rbxl (21.6 KB)
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If you have any questions/comments/errors, just say so in the replies!
Have a nice day.
If enough people like this, I may make a second tutorial.