/*
 * RandomSupportStrategy.java
 *
 * Created on April 17, 2004, 6:22 PM
 */

package simulations.core.strategy.decisionSupportStrategy;

import java.util.ArrayList;
import simulations.core.Player;

/**
 * This class describes a decision support strategy. It ask yes/no with
 * a probability of 0.5 but say always no to an attack versus itself
 * @author  tom
 */
public class RandomSupportStrategy extends DecisionSupportStrategy {
    
    /** Creates a new instance of RandomSupportStrategy */
    public RandomSupportStrategy() {
        super();
        name="RandomSupportStrategy";
        memoryParam=false;
        abr="16";
    }
    
    /** return true if the player will support the attack.
     * @return return true if the player will support the attack.
     * @param player The owner of the strategy
     * @param attackingPlayer The attacking player
     * @param attackedPlayer The attacked player
     * @param playerList The list of remaining players
     */    
    public boolean supportAttack(Player player, Player attackingPlayer, Player attackedPlayer, ArrayList playerList) {
        if (player.equals(attackedPlayer)) {
            // don't accept to support an attack on himself
            return false;
        }
        if (randomGenerator.nextInt(2)==0) {
            return true;
        } else {
            return false;
        }
    }
    
    /**
     * This method is called by the judge after the decision of players to attack and to ask supports
     * to inform the strategy
     * @param player The owner of the strategy
     * @param attacksList The list of attacks
     **/
    public void updateAttacksInfos(Player player, ArrayList attacksList) {
    }
    
    /** This method is called by the judge to inform players of the last turn
     * @param turn The turn
     * @param player The owner of the strategy
     * @param remainingPlayers The list of the remaining players
     */    
    public void updateLastTurn(simulations.core.history.Turn turn, simulations.core.Player player, java.util.ArrayList remainingPlayers) {
    }
    
    /** return the description of this decision support strategy
     * @return return the description of this decision support strategy
     **/
    public String getDescription() {
        return "Decision support strategy :\n"+
        "I accept randomly with a probabilty of 0.5\n"+
        "but I never accept an attack versus myself\n";
    }
    
}