/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

// Based on code by omergilad.

#ifndef GUI_ANIMATION_WAITFORCONDITIONANIMATION_H
#define GUI_ANIMATION_WAITFORCONDITIONANIMATION_H

#include "gui/animation/Animation.h"

namespace GUI {

class Condition {

public:
	virtual ~Condition() {}

	virtual bool evaluate() = 0;
};

typedef Common::SharedPtr<Condition> ConditionPtr;

/**
 * Used for delaying the animation sequence until a certain condition has been met
 */
class WaitForConditionAnimation: public Animation {
public:
	WaitForConditionAnimation() {}
	virtual ~WaitForConditionAnimation() {}

	virtual void update(Drawable *drawable, long currentTime) {
		// Check the condition - if it has been met, finish.
		if (_condition.get() != NULL && _condition->evaluate()) {
			finishAnimation();
		}
	}

	ConditionPtr getCondition() const {
		return _condition;
	}

	void setCondition(ConditionPtr condition) {
		_condition = condition;
	}

private:
	ConditionPtr _condition;
};

} // End of namespace GUI

#endif /* GUI_ANIMATION_WAITFORCONDITIONANIMATION_H */