foul-magics/Mage/src/main/java/mage/abilities/costs/AlternativeSourceCosts.java

package mage.abilities.costs;

import mage.abilities.Ability;
import mage.game.Game;

/**
 * Interface for abilities that add alternative costs to the source.
 *
 * Example of such additional source costs: {@link mage.abilities.keyword.KickerAbility}
 *
 * @author LevelX2
 */
public interface AlternativeSourceCosts {

    /**
     * Ask the player if they want to use the alternative costs
     * 
     * @param ability ability the alternative cost is activated for
     * @param game
     * @return 
     */
    boolean askToActivateAlternativeCosts(Ability ability, Game game);
    
    /**
     * Is the alternative spell cost currently available
     * 
     * @param source spell ability the alternative costs can be paid for
     * @param game
     * @return 
     */
    boolean isAvailable(Ability source, Game game);
    
    /**
     * Was the alternative cost activated
     * @param game
     * @param source
     * @return
     */
    boolean isActivated(Ability source, Game game);
    
    /**
     * Suffix string to use for game log
     * @param game
     * @return 
     */
    String getCastMessageSuffix(Game game);      
    
}