#include "libs.h"
#include "body.h"
#include "frame.h"

Body::Body(void) {
  m_frame = 0;
  m_flags = 0;
  m_projectedPos = vector3d(0.0f, 0.0f, 0.0f);
  m_onscreen = false;
  m_dead = false;
}

Body::~Body(void) {
  /* Do not call delete body. Call Space::KillBody(body). */
  assert(m_dead);
}

/* f == NULL, then absolute position within system. */
vector3d Body::GetPositionRelTo(const Frame* relTo) {
  return m_frame->GetPosRelativeToOtherFrame(relTo) + GetPosition();
}

const vector3d& Body::GetProjectedPos(void) const {
  assert(IsOnscreen());
  return m_projectedPos;
}