/************************************************************************
 * Strathclyde Planning Group,
 * Department of Computer and Information Sciences,
 * University of Strathclyde, Glasgow, UK
 * http://planning.cis.strath.ac.uk/
 * 
 * Copyright 2007, Keith Halsey
 * Copyright 2008, Andrew Coles and Amanda Smith
 *
 * (Questions/bug reports now to be sent to Andrew Coles)
 *
 * This file is part of JavaFF.
 * 
 * JavaFF 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.
 * 
 * JavaFF 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 JavaFF. If not, see <http://www.gnu.org/licenses/>.
 * 
 ************************************************************************/

package javaff.data;

import javaff.data.strips.OperatorName;
import javaff.planning.State;

import java.util.Set;
import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Map;
import java.math.BigDecimal;

public abstract class Action
{
 public OperatorName name;
 public List params = new ArrayList(); // List of PDDLObjects

	//Standard plan costs a minimum one step
	public BigDecimal cost = new BigDecimal(1);

 public String toString()
 {
		String stringrep = name.toString();
		Iterator i = params.iterator();
		while (i.hasNext())
		{
			stringrep = stringrep + " " + i.next();
		}
		return stringrep;
 }

	public abstract boolean isApplicable(State s);
	public abstract void apply(State s);
	public abstract Set getConditionalPropositions();
	public abstract Set getAddPropositions();
	public abstract Set getDeletePropositions();
	public abstract Set getComparators();
	public abstract Set getOperators();
	public abstract void staticify(Map fValues);

	public boolean equals(Object obj)
 {
		if (obj instanceof Action)
		{
			Action a = (Action) obj;
			return (name.equals(a.name) && params.equals(a.params));
		}
		else return false;
 }

 public int hashCode()
 {
 return name.hashCode() ^ params.hashCode();
 }
}