/* "Species" - a CoreWars evolver.  Copyright (C) 2003 'Varfar' 
 *
 * 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 1, 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.,
 * 675 Mass Ave, Cambridge, MA 02139, USA. 
 */

#include "length.hpp"
#include "species.hpp"
#include "rand.hpp"

using namespace std;

/***** CLength class implementation *******************/

void CLength::read_ini(INIFile &ini) { /* loads length values; values are REQUIRED */
	KeyValuePair *kvp;
	// min length
	kvp = ini.get("min_length");
	if(0 == kvp)
		PANIC(MISC,"min_length expected",NULL);
	_min = kvp->getValueAsInt();
	if(!(0 < _min < MAXLENGTH))
		PANIC(MISC,"min_length is illegal",NULL);
	// max length
	kvp = ini.get("max_length");
	if(0 == kvp)
		PANIC(MISC,"max_length expected",NULL);
	_max = kvp->getValueAsInt();
	if(!(_min < _max < MAXLENGTH))
		PANIC(MISC,"max_length is illegal",NULL);
}

CLength *CLength::read_override_ini(INIFile &ini) /* loads length values; if any length values are
	specified, then a copy of this length will be made; all unspecified values in the new
	class will be "inherited" from this one, and any specified values will be overriden.  If nothing
	is specified, then this will be returned */ {
	CLength *ret = this;
	KeyValuePair *kvp;
	// min length
	kvp = ini.get("min_length");
	if(0 != kvp) { // specified?
		ret = new CLength(*this); // create an overriden copy to return
		ret->_min = kvp->getValueAsInt();
		if(!((0 < ret->_min) && (ret->_min < MAXLENGTH)))
			PANIC(MISC,"min_length is illegal",NULL);
	}
	// max length
	kvp = ini.get("max_length");
	if(0 != kvp) { // specified?
		if(this == ret) // not overriden for min?
			ret = new CLength(*this); // create an overriden copy to return
		ret->_max = kvp->getValueAsInt();
		if(!((ret->_min <= ret->_max) && (ret->_max < MAXLENGTH)))
			PANIC(MISC,"max_length is illegal",NULL);
	}
	return ret;
}

void CLength::write_ini(ostream &os) {
	os	<< "min_length=" << _min << endl
		<< "max_length=" << _max << endl;
}

void CLength::write_override_ini(ostream &os,const CLength *parent) {
	if(this == parent) // nothing overriden?
		return;
	if(parent->_min != _min) // overriden?
		os << "min_length=" << _min << endl;
	if(parent->_max != _max) // overriden?
		os << "max_length=" << _max << endl;
}

int CLength::rnd() const { // returns a random length that is ok()
	if(_min == _max) // fixed length?
		return _min;
	return (CRand::irand(_max-_min)+_min);
}