Function qObjCanSeePlayer

scripts/DallasFuncs.cpp:6160–6206

$$QUERY Objects b:Player is within the [i:Cone=90] degree view cone of [o:Object] at a max distance of [f:Distance] qObjCanSeePlayer Can object see a player Determines if the specified object can see a player Parameters: Object: The object doing the looking Cone: Angle between 0-360 which makes the viewcone that determines if the object can see the other object Distance: The player must b

$$END
*/
bool qObjCanSeePlayer(int cone, int handlesrc, float max_distance) {
  vector vsource, vtarget, viewvec;
  msafe_struct mstruct;

  // Get half of the angle that the user specified because they specified a cone, and we want an angle
  double cangle = (double)((double)cone / (double)2);
  double t = cangle * PI / 180;
  double testangle = cos(t);

  // Loop though all possible players
  for (int p = 0; p < MAX_PLAYERS; p++) {

    // Get player position
    mstruct.slot = p;
    MSafe_GetValue(MSAFE_OBJECT_PLAYER_HANDLE, &mstruct);

    // See if this player active
    if (mstruct.objhandle == OBJECT_HANDLE_NONE)
      continue;

    // Get the target position
    MSafe_GetValue(MSAFE_OBJECT_POS, &mstruct);
    vtarget = mstruct.pos;

    // Get the viewer position
    mstruct.objhandle = handlesrc;
    MSafe_GetValue(MSAFE_OBJECT_POS, &mstruct);
    vsource = mstruct.pos;

    // Get the viewer orientation
    mstruct.objhandle = handlesrc;
    MSafe_GetValue(MSAFE_OBJECT_ORIENT, &mstruct);

    // Get the normalized vector from the source to the target
    float dist = vm_GetNormalizedDirFast(&viewvec, &vtarget, &vsource);

    // Get the angle between the objects
    float dot = vm_DotProduct(&viewvec, &mstruct.orient.fvec);

    // Check angle and distance
    if ((dot > testangle) && (dist < max_distance))
      return 1;
  }

  // Didn't find any in the view cone
  return 0;
}

/*
$$QUERY