package game.model;

/** Commands are actions that have an executable
 * component which will be called when the command is performed.
 */
public interface Command extends Action {
	/** Execute the action. What happens here entirely depends on 
	 * the action, e.g. an action could modify the deck and the 
	 * player's hand to draw a card, or an action could affect cards
	 * on the table.
	 * @param game The game state, the Command can make changes to this. 
	 * @return <tt>true</tt> if the Command was performed, <tt>false</tt> otherwise.
	 */
	boolean execute(Game game);
	
	/** The conditions under which this command can be executed. Conditions 
	 * hold the Area and Phase in which the Command must reside before it
	 * is allowed.
	 * @return The conditions or <tt>null</tt> if the command is always allowed. 
	 */
	Condition [] conditions();
}