The project was made in Unity 2021.3 and uses URP to render the game with the best performance

VEHICLE MOVEMENT
• Used Unity's built-in wheel collider to control each wheel independently
• The car is affected by its torque which is calculated by an equation considering the gear ratio and speed
• Steering is improved by Ackermann Steering which decreases the chances of the car rolling over
• When changing gears the car disables the input for a few milliseconds to improve the game immersion
• Brakes affect the front wheels while handbrake affects only the rear wheel
• Each car is unique in everything including handling, torque, brakes power, and if it's RWD, AWD, or FWD
• Downforce increases as the vehicle speed increases
• Race ends if you run out of fuel and come to a dead stop

IN-GAME STORE
• Automatically spawns buttons and assigns each button data
• Displays an overlay to indicate whether this car is purchased, selected, or how much it costs
• Connects to the game's coins manager easily and checks if there's enough coins before purchasing

RACE MANAGER
• Each race has checkpoints place to calculate the leaderboard
• The player have to pass all the checkpoints to reach the finish line
• To win you have to reach the finish line first
• I made a node-based checkpoint system that makes designing a circuit easier

NPCS
• Target cars are randomly generated in the start positions for the level
• Each checkpoint has a target speed to help the NPCs brake better
• NPCs follow the checkpoints location to move
• Raycasts are used to make the cars avoid ramming into each other
• They share the same Vehicle Movement script used by the player
• NPCs has fuel as well, and therefor they can collect fuel pickups to refill their cars
• Each car gets assigned a unique random color from a set of pre-defined colors

TOUCH UI
• Touch buttons are controlled via Event Triggers to make sure they don't get stuck in one state
• Touch arrows are placed to control steering
• Gas and brake pedals-shaped buttons are used to move the car
• Handbrake has its own button
• The game detects which platform it's running on and enables/disables touch input (can be overridden)

ADDITIONAL
• Loading Manager: which changes tips and images each time, and shows the loading progress
• Tabs: Located in the main menu which makes navigation easier and more intuitive
• Menu Animation: Tweening is used to make sure menu animation doesn't affect game performance
• Notch Support: Detects the phones that has a notch and scales the UI to fit in the safe zone
• Simple Settings: Includes audio sliders, links to social media pages, and the current game version
• Unity Ads: An ad is displayed after a race ends, and a banner ad is displayed in-race

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