/**
* ******************************************** to undo this move we must put the cards back IN
* THE ORDER they were extracted.
*/
public boolean undo(Solitaire theGame) {
// VALIDATE:
if ((discardsCard == null) || (drawnCard == null)) return false;
// EXECUTE:
if (!wasDiscardsEmpty) {
discards.add(justDrawn.get());
}
discards.add(discardsCard);
justDrawn.add(drawnCard);
theGame.updateScore(-2);
return true;
}
/** Do the MatchDiscardsAndJustDrawnMove. */
public boolean doMove(Solitaire theGame) {
// VALIDATE:
if (valid(theGame) == false) {
return false;
}
// EXECUTE:
discardsCard = discards.get();
drawnCard = justDrawn.get();
// these cards are no longer selected.
discardsCard.setSelected(false);
drawnCard.setSelected(false);
wasDiscardsEmpty = discards.empty();
if (!wasDiscardsEmpty) {
justDrawn.add(discards.get());
}
theGame.updateScore(+2);
return true;
}