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eventman.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2003-2004 The ScummVM project
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.      See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header: /cvsroot/scummvm/scummvm/sword1/eventman.cpp,v 1.5 2004/10/21 12:43:48 chrilith Exp $
 *
 */

#include "stdafx.h"
#include "sword1/eventman.h"
#include "sword1/sworddefs.h"
#include "common/util.h"

namespace Sword1 {

EventManager::EventManager(void) {
      for (uint8 cnt = 0; cnt < TOTAL_EVENT_SLOTS; cnt++)
            _eventPendingList[cnt].delay = _eventPendingList[cnt].eventNumber = 0;
}

void EventManager::serviceGlobalEventList(void) {
      for (uint8 slot = 0; slot < TOTAL_EVENT_SLOTS; slot++)
            if (_eventPendingList[slot].delay)
                  _eventPendingList[slot].delay--;
}

void EventManager::checkForEvent(Object *compact) {
      for (uint8 objCnt = 0; objCnt < O_TOTAL_EVENTS; objCnt++) {
            if (compact->o_event_list[objCnt].o_event)
                  for (uint8 globCnt = 0; globCnt < TOTAL_EVENT_SLOTS; globCnt++) {
                        if (_eventPendingList[globCnt].delay &&
                              (_eventPendingList[globCnt].eventNumber == compact->o_event_list[objCnt].o_event)) {
                                    compact->o_logic = LOGIC_script;      //force into script mode
                                    _eventPendingList[globCnt].delay = 0; //started, so remove from queue
                                    compact->o_tree.o_script_level++;
                                    compact->o_tree.o_script_id[compact->o_tree.o_script_level] = 
                                          compact->o_event_list[objCnt].o_event_script;
                                    compact->o_tree.o_script_pc[compact->o_tree.o_script_level] = 
                                          compact->o_event_list[objCnt].o_event_script;
                        }
                  }
      }
}

bool EventManager::eventValid(int32 event) {
      for (uint8 slot = 0; slot < TOTAL_EVENT_SLOTS; slot++)
            if ((_eventPendingList[slot].eventNumber == event) &&
                  (_eventPendingList[slot].delay))
                  return true;
      return false;
}

int EventManager::fnCheckForEvent(Object *cpt, int32 id, int32 pause) {
      if (pause) {
            cpt->o_pause = pause;
            cpt->o_logic = LOGIC_pause_for_event;
            return SCRIPT_STOP;
      }

      for (uint8 objCnt = 0; objCnt < O_TOTAL_EVENTS; objCnt++) {
            if (cpt->o_event_list[objCnt].o_event)
                  for (uint8 globCnt = 0; globCnt < TOTAL_EVENT_SLOTS; globCnt++) {
                        if (_eventPendingList[globCnt].delay &&
                              (_eventPendingList[globCnt].eventNumber == cpt->o_event_list[objCnt].o_event)) {
                                    cpt->o_logic = LOGIC_script;      //force into script mode
                                    _eventPendingList[globCnt].delay = 0; //started, so remove from queue
                                    cpt->o_tree.o_script_level++;
                                    cpt->o_tree.o_script_id[cpt->o_tree.o_script_level] = 
                                          cpt->o_event_list[objCnt].o_event_script;
                                    cpt->o_tree.o_script_pc[cpt->o_tree.o_script_level] = 
                                          cpt->o_event_list[objCnt].o_event_script;
                                    return SCRIPT_STOP;
                        }
                  }
      }
      return SCRIPT_CONT;
}

void EventManager::fnIssueEvent(Object *compact, int32 id, int32 event, int32 delay) {
      uint8 evSlot = 0;
      while (_eventPendingList[evSlot].delay)
            evSlot++;
      if (evSlot >= TOTAL_EVENT_SLOTS)
            error("EventManager ran out of event slots!");
      _eventPendingList[evSlot].delay = delay;
      _eventPendingList[evSlot].eventNumber = event;
}

} // End of namespace Sword1

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