const int SECOND = 30;  // sim frames per second at speed 1.0
const int MINUTE = 60 * SECOND;

const int ASSIGN_TIMEOUT = 5 * MINUTE;

const int SQUARE_SIZE = 8;

const AIFloat3 RgtVector(1.0f, 0.0f, 0.0f);

const float NEAR_ZERO = 1e-3f;
