Genre: Racing

Expert blueprint for racing games balancing physics, competition, and sense of speed.

NEVER Do

NEVER rigid camera attachment

— Camera locked to car causes motion sickness. Use lerp with slight delay for smooth follow.

NEVER skip sense of speed

— Increase FOV as speed increases, add camera shake, wind lines, motion blur. Tunnel vision breaks immersion.

NEVER make physics overly realistic

— "Floaty" arcade feel is often more fun than simulation. Increase gravity 2-3x, adjust wheel friction.

NEVER forget checkpoints

— Without validation, players exploit shortcuts. Enforce checkpoint sequence to complete laps.

NEVER ignore rubber-banding

— AI that's too far ahead/behind makes races boring. Adjust AI speed dynamically based on player distance.

Available Scripts

MANDATORY

Read the appropriate script before implementing the corresponding pattern.

spline_ai_controller.gd

Path3D-based racing AI. Projects position onto curve, calculates look-ahead for steering, applies throttle based on target speed vs velocity.

Core Loop

Race

Player controls a vehicle on a track.

Compete

Player overtakes opponents or beats the clock.

Upgrade

Player earns currency/points to buy parts/cars.

Tune

Player adjusts vehicle stats (grip, acceleration).

Master

Player learns track layouts and optimal lines. Skill Chain Phase Skills Purpose 1. Physics physics-bodies , vehicle-wheel-3d Car movement, suspension, collisions 2. AI navigation , steering-behaviors Opponent pathfinding, rubber-banding 3. Input input-mapping Analog steering, acceleration, braking 4. UI progress-bars , labels Speedometer, lap timer, minimap 5. Feel camera-shake , godot-particles Speed perception, tire smoke, sparks Architecture Overview 1. Vehicle Controller Handling the physics of movement.

car_controller.gd

extends VehicleBody3D @ export var max_torque : float = 300.0 @ export var max_steering : float = 0.4 func _physics_process ( delta : float ) -> void : steering = lerp ( steering , Input . get_axis ( "right" , "left" ) * max_steering , 5 * delta ) engine_force = Input . get_axis ( "back" , "forward" ) * max_torque 2. Checkpoint System Essential for tracking progress and preventing cheating.

checkpoint_manager.gd

extends Node var checkpoints : Array [ Area3D ] = [ ] var current_checkpoint_index : int = 0 signal lap_completed func _on_checkpoint_entered ( body : Node3D , index : int ) -> void : if index == current_checkpoint_index + 1 : current_checkpoint_index = index elif index == 0 and current_checkpoint_index == checkpoints . size ( ) - 1 : complete_lap ( ) 3. Race Manager high-level state machine.

race_manager.gd

enum State { COUNTDOWN , RACING , FINISHED } var current_state : State = State . COUNTDOWN func start_race ( ) -> void :

3.. 2.. 1.. GO!

await countdown ( ) current_state = State . RACING start_timer ( ) Key Mechanics Implementation Drifting Arcade drifting usually involves faking physics. Reduce friction or apply a sideways force. func apply_drift_mechanic ( ) -> void : if is_drifting :

Reduce sideways traction

wheel_friction_slip

1.0

Add slight forward boost on exit

else : wheel_friction_slip = 3.0

High grip

Rubber Banding AI Keep the race competitive by adjusting AI speed based on player distance. func update_ai_speed ( ai_car : VehicleBody3D , player : VehicleBody3D ) -> void : var dist = ai_car . global_position . distance_to ( player . global_position ) if ai_car_is_ahead_of_player ( ai_car , player ) : ai_car . max_speed = base_speed * 0.9

Slow down

else : ai_car . max_speed = base_speed * 1.1

Speed up

Godot-Specific Tips

VehicleBody3D

Godot's built-in node for vehicle physics. It's decent for arcade, but for sims, you might want a custom RayCast suspension.

Path3D / PathFollow3D

Excellent for simple AI traffic or fixed-path racers (on-rails).

AudioBus

Use the

Doppler

effect on the AudioListener for realistic passing sounds.

SubViewport

Use for the rear-view mirror or minimap texture.

Common Pitfalls

Floaty Physics

Cars feel like they are on ice.

Fix

Increase gravity scale (2x-3x) and adjust wheel friction. Realism < Fun.

Bad Camera

Camera is rigidly attached to the car.

Fix

Use a

Marker3D

with a

lerp

script to follow the car smoothly with a slight delay.

Tunnel Vision

No sense of speed.

Fix

Increase FOV as speed increases, add camera shake, wind lines, and motion blur. Reference Master Skill: godot-master