RemoveItemFromStackAction.java

package magic.model.action;

import magic.model.MagicGame;
import magic.model.stack.MagicItemOnStack;
import magic.model.stack.MagicStack;

public class RemoveItemFromStackAction extends MagicAction {

    private final MagicItemOnStack itemOnStack;
    private int position;

    public RemoveItemFromStackAction(final MagicItemOnStack itemOnStack) {
        this.itemOnStack=itemOnStack;
    }

    @Override
    public void doAction(final MagicGame game) {
        final MagicStack stack=game.getStack();
        position=stack.indexOf(itemOnStack);
        if (position != -1) {
            game.getStack().removeFrom(position);
        }
    }

    @Override
    public void undoAction(final MagicGame game) {
        if (position != -1) {
            game.getStack().addTo(position,itemOnStack);
        }
    }
}