Function ResetReticle

Descent3/hud.cpp:1867–1916

resets reticle based off current player object. and the ship's weapon configuration

//	resets reticle based off current player object.
//	and the ship's weapon configuration
void ResetReticle() {
  player *player = &Players[Player_num];
  object *pobj = &Objects[player->objnum];

  ASSERT(player->objnum >= 0);

  // Make sure we're not resetting a non-existent object
  if (!pobj || (pobj->type != OBJ_PLAYER && pobj->type != OBJ_GHOST && pobj->type != OBJ_OBSERVER))
    return;

  poly_model *pm = &Poly_models[Objects[player->objnum].rtype.pobj_info.model_num];
  otype_wb_info *prim_wb = &Ships[player->ship_index].static_wb[player->weapon[PW_PRIMARY].index];
  otype_wb_info *sec_wb = &Ships[player->ship_index].static_wb[player->weapon[PW_SECONDARY].index];
  dynamic_wb_info *prim_dyn_wb = &pobj->dynamic_wb[player->weapon[PW_PRIMARY].index];

  int i, j;

  //	assign reticle elements to the Ret_prim_xx array.
  //	create battery mask
  Ret_prim_mask = 0;

  // iterate through all battery masks to determine which gun points occupy the primary weapon
  // on the player ship!
  for (j = 0; j < prim_wb->num_masks; j++) {
    for (i = 0; i < pm->poly_wb[0].num_gps; i++) {
      if (prim_wb->gp_fire_masks[j] & (1 << i)) {
        Ret_prim_mask |= (1 << i);
      } else if ((prim_dyn_wb->flags & DWBF_QUAD) && (prim_wb->gp_quad_fire_mask & (1 << i))) {
        Ret_prim_mask |= (1 << i);
      }
    }
  }

  if (player->weapon[PW_PRIMARY].index == MASSDRIVER_INDEX && (Ret_prim_mask & (1 << 0))) {
    // special hack for mass driver weapons
    Ret_prim_mask &= (~(1 << 0));
    Ret_prim_mask |= RETMASK_FLAG_AUXPRIMARY0;
  }

  // iterate through all battery masks to determine which gun points occupy the secondary weapon
  // on the player ship!
  Ret_sec_mask = 0;

  for (j = 0; j < sec_wb->num_masks; j++) {
    for (i = 0; i < pm->poly_wb[0].num_gps; i++) {
      if (sec_wb->gp_fire_masks[j] & (1 << i))
        Ret_sec_mask |= (1 << i);
    }
  }
}

//	creates the reticle display bitmap mask to be used by the reticle renderer.
static inline uint16_t reticle_mask(object *pobj, otype_wb_info *static_wb, int wb_index) {