Method getHitCorrection

src/clientbase/Player.cpp:1692–1908

bool Player::getHitCorrection(const fvec3& startPos, const float startAzimuth,
                              const fvec3& /*endPos*/, const float /*endAzimuth*/,
                              const fvec3& startVelocity, double dt,
                              float groundLimit, fvec3& velocity, fvec3& position,
                              float* azimuth) {
  // constants
  static const float MinSearchStep = 0.0001f;
  static const int MaxSearchSteps = 7;
  static const int MaxSteps = 4;
  static const float TinyDistance = 0.0001f;

  fvec3 newPos;
  fvec3 newVelocity;
  float newAzimuth;
  float newAngVel;
  bool hitWall;
  const Obstacle* obstacle;
  bool expel;
  float timeStep = (float)dt;

  newPos = startPos;
  newVelocity = startVelocity;
  newAngVel = state.angVel;
  newAzimuth = startAzimuth;
  hitWall = false;

  bool phased = !isSolid();

  for (int numSteps = 0; numSteps < MaxSteps; numSteps++) {
    // record position at beginning of time step
    fvec3 tmpPos;
    float tmpAzimuth;
    tmpAzimuth = newAzimuth;
    tmpPos = newPos;

    // get position at end of time step
    newAzimuth = tmpAzimuth + timeStep * newAngVel;
    newPos = tmpPos + (timeStep * newVelocity);
    if ((newPos.z < groundLimit) && (newVelocity.z < 0)) {
      // Hit lower limit, stop falling
      newPos.z = groundLimit;
      if ((state.status & PlayerState::Exploding) != 0) {
        // tank pieces reach the ground, friction
        // stop them, & mainly player view
        newPos.x = tmpPos.x;
        newPos.y = tmpPos.y;
      }
    }

    // see if we hit anything.  if not then we're done.
    obstacle = getHitBuilding(tmpPos, tmpAzimuth, newPos, newAzimuth,
                              phased, expel);

    if (!obstacle || !expel) {
      break;
    }

    static BZDB_float maxBumpHeight(BZDBNAMES.MAXBUMPHEIGHT);