Expert on Unity physics simulations, vehicle dynamics, and general Unity coding.

Notable projects:

• Edy’s Vehicle Physics - GTA-style, semi-realistic vehicle physics.
• Vehicle Physics Pro - Fully realistic vehicle simulation in Unity.
• PERRINN 424 Simulator - Engineering project to design and test a competition hypercar.

Notable posts:

• Comprehensive guide to the execution order of Unity event functions
• Why you shouldn’t change Time.fixedDeltaTime when changing Time.timeScale (with detailed example)
• How to convert between inertiaTensor / inertiaTensorRotation and a 3x3 inertia matrix
• Yes, Physx 4 produces unrealistic simulations on Rigidbodies with non-uniform inertia
• Understanding friction types in Unity physics - how to configure Unity for realistic frictions and collisions
• Understanding all 8 collider / rigidbody combinations
• Why applying forces off-center cause the same linear momentum
• Why AddTorque causes angular velocity on unexpected axes
• What we know about the Unity WheelCollider