jMonkeyEngine 3.0 Beginner's Guide

My whole world is falling apart

A physics simulation can be quite a loose cannon. Don't be surprised when physical objects jitter or are unceremoniously hurled out of the scene. Congratulations, you have created a physically impossible state! Most likely, you positioned two solid objects too close to each other. How do you find the source of the problem?

• Activate the physics debug mode to visualize the actual collision shapes. Some dynamic objects receive HullCollisionShapes by default, which are not mesh-accurate. Make certain that no collision shapes overlap. You can render the (otherwise invisible) collision shapes as wireframes with the following command:

  bulletAppState.getPhysicsSpace().enableDebug(assetManager); // on
  bulletAppState.getPhysicsSpace().disableDebug() ...