Function ai_fire

Descent3/AImain.cpp:5196–5534

#define DEFAULT_FIRE_DOT .93f

void ai_fire(object *obj) {
  if (!Object_info[obj->id].static_wb) {
    // something is hosed due to 'Mac memory savings' (c)
    Int3();
    return; // object can't fire anything...
  }

  ai_frame *ai_info = obj->ai_info;
  int i;
  int j;
  poly_model *pm = &Poly_models[obj->rtype.pobj_info.model_num];
  object_info *obj_info = &Object_info[obj->id];
  bool f_turret_next_move_still;

  //.		mprintf(0, "Aiming\n");
  if (!(ai_info->flags & AIF_FIRE)) {
    if (ai_info->status_reg & AISR_RANGED_ATTACK) {
      for (i = 0; i < pm->num_wbs; i++) {
        if (!(obj->dynamic_wb[i].flags & DWBF_ENABLED))
          continue;

        if (WBIsBatteryReady(obj, &obj_info->static_wb[i], i) &&
            !(Cinematic_inuse && !(ai_info->status_reg & AISR_OK_TO_FIRE_DURING_CINEMATICS))) {
          int anim_type = obj_info->static_wb[i].flags & WBF_ANIM_MASKS;

          if (anim_type == WBF_ANIM_LOCAL) {
            WBSetupFireAnim(obj, &obj_info->static_wb[i], i);
          } else if (anim_type == WBF_ANIM_FULL) {
            gi_fire attack_info;

            attack_info.cur_wb = i;
            attack_info.cur_mask = obj->dynamic_wb[i].cur_firing_mask;

            GoalAddGoal(obj, AIG_FIRE_AT_OBJ, (void *)&attack_info, ACTIVATION_BLEND_LEVEL);
          } else {
            WBFireBattery(obj, &obj_info->static_wb[i], i);
            ai_info->status_reg &= ~AISR_RANGED_ATTACK;
          }
        }
      }
    }

    return;
  }

  if (((Gametime - ai_info->last_see_target_time) > 4.0 && (Gametime - ai_info->last_hear_target_time) > 4.0) ||
      ai_info->awareness <= AWARE_BARELY) {
    ai_info->status_reg &= ~AISR_RANGED_ATTACK;
    return;
  }

  for (i = 0; i < pm->num_wbs; i++) {
    vector target_dir[3];
    float dot[3];
    vector gun_point[3];
    vector gun_normal[3];
    float ta[3];
    int best_dot = WB_MOVE_STILL;