Car Movement Mechanics in Booze & Brains

 For car movement, I designed a script that controlled the vehicle's acceleration, steering, and drifting. The key variables included:

• Acceleration Factor – Determines how fast the car gains speed.

• Turn Factor – Controls the sharpness of turns.

• Acceleration Input – Captures player input for movement.

• Rotation Angle – Keeps track of the car’s current rotation.

Car Engine Function

 To create a realistic engine system, I implemented a function called CarEngine(). Inside this function, I introduced a local variable:

  Vector2 engineForceVector = transform.up * accelerationInput * accelerationFactor; rb2d.AddForce(engineForceVector);

  This applied force in the upward direction of the car, ensuring smooth acceleration.

​

Steering Function

 For steering, I created another function where:

 rotationAngle -= steeringInput * turnFactor; rb2d.MoveRotation(rotationAngle);

 This allowed the car to turn dynamically based on player input.

Drifting Mechanics

 To introduce realistic drifting and skidding, I added a drift factor variable and a function to modify velocity. Inside this function, I used:

 Vector2 forwardVelocity = transform.up * Vector2.Dot(rb2d.velocity, transform.up); Vector2 rightVelocity = transform.right * Vector2.Dot(rb2d.velocity, transform.right);   rb2d.velocity = forwardVelocity + rightVelocity * driftFactor;

• A higher drift factor increased skidding.

• The right velocity was reduced, making turns feel more fluid.

 To visualize skid marks, I added a Trail Renderer on the car’s wheels, enhancing the feedback when drifting.