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/* Copyright (C) 1994-2003 Revolution Software Ltd
 *
 * 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.
 *
 * $Header$
 */

// logic management

#ifndef _LOGIC
#define _LOGIC

#include "defs.h"
#include "header.h"

#define	TREE_SIZE 3

class logic {
public:
	//do one cycle of the current session
	int Process_session(void);

	// cause the logic loop to terminate and drop out
	void Express_change_session(uint32 sesh_id);

	// new logic begins next cycle
	void Natural_change_session(uint32 sesh_id);

	uint32 Return_run_list(void);

	// setup script_id and script_pc in cur_object_hub - called by
	// FN_gosub()
	void Logic_up(uint32 new_script);

	void Logic_replace(uint32 new_script);
	void Logic_one(uint32 new_script);
	void Total_restart(void);
	uint32 Examine_run_list(void);
	void Reset_kill_list(void);

private:
	// denotes the res id of the game-object-list in current use
  	uint32 current_run_list;

	void Process_kill_list(void);

	//pc during logic loop
	uint32 pc;

	// each object has one of these tacked onto the beginning
	_object_hub *cur_object_hub;
};

extern logic LLogic;

int32 FN_add_to_kill_list(int32 *params);

#endif