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Speed Boosts

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Prerequisites: Before you dive in!

1. Intro

2. Setup

3. Creating a Gamepass

Objective 🧐ðŸ—ŋ​

We are going to create a script that allows players to purchase a speed boost for their character in Roblox using a Developer Product.

Description 📖ðŸŠķ​

Here's what we want to accomplish:

1. Purchase Speed Boost:

Players can buy a speed boost for their character using a Developer Product.

2. Increase Walk Speed:

When purchased, the character's walk speed will double temporarily.

3. Restore Original Walk Speed:

After a short duration, the character's walk speed will return to normal.

By doing this, we will create a dynamic gameplay feature where players can temporarily boost their character's walk speed through in-game purchases.

Instructions and Code Logic 📝📚​

Step 1 - Get the Necessary Services​

  • Get the MarketplaceService from the game.

  • Get the Players service from the game.

Step 2 - Set Up Developer Product ID​

  • Define the Developer Product ID for the speed boost purchase (DEV_PRODUCT_SPEED_BOOST).

Step 3 - Create a Function to Handle Speed Boost​

  • Define a function named grantSpeedBoost that takes a player as an argument.

  • Inside the function, get the player's character and its Humanoid component.

  • Store the original walk speed of the Humanoid.

  • Double the Humanoid's walk speed.

  • Wait for 5 seconds (the duration of the speed boost).

  • Reset the Humanoid's walk speed to its original value.

Step 4 - Create a Function to Process Receipts​

  • Define a function named processReceipt that takes receiptInfo as an argument.

  • Inside the function, get the player from the receipt information.

  • If the player is not found, return Enum.ProductPurchaseDecision.NotProcessedYet.

  • Use a pcall to handle any errors during processing.

  • If the ProductId matches the speed boost product, call the grantSpeedBoost function for the player.

  • Return Enum.ProductPurchaseDecision.PurchaseGranted if successful, otherwise return Enum.ProductPurchaseDecision.NotProcessedYet.

Step 5 - Set the Callback Function​

  • Set MarketplaceService.ProcessReceipt to the processReceipt function to handle purchase processing.

Putting It All Together 🔧ðŸ”Đ​

  • Start by getting the necessary services and setting up the Developer Product ID.

  • Define functions to handle speed boost and receipt processing.

  • Set the callback function for processing receipts.

By following these simple steps, you can create a script that allows players to purchase a speed boost for their character, with the walk speed returning to normal after a short duration.