Parts change mechanics
The part catalogue feeds resolved vehicle properties. Battery charge and internal resistance affect voltage; motor constants, winding resistance and ESC current limits affect torque. Gearing trades wheel speed against torque, while wheel dimensions and inertia affect rotation. These are authored model parameters, not measurements of commercial components.
The chassis and wheels share a force budget
The game owns suspension, tyre slip and grip, steering and the electric drivetrain. Chaos supplies rigid-body integration, contact and point-force mechanisms. Component masses and inertia estimates are assembled around the centre of mass; installing parts adjusts the body origin while preserving the chassis pose.
Presentation follows the simulation
Generated named resources describe the vehicle and its articulated components. The authored dirt course supplies bends, berms and jumps. Continuous drivetrain, surface and impact audio follows mechanical and contact state through Engine streaming rather than an unrelated sound loop.
A driving slice is a useful limit
The implemented slice focuses on one buggy and a dirt course, with controller input, recovery and race presentation. Garage part controls affect the model, but the wider economy, inventory and progression direction remains separate later work.