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- // SuperTux
- // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
- //
- // 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/>.
- #ifndef HEADER_SUPERTUX_SUPERTUX_SCREEN_FADE_HPP
- #define HEADER_SUPERTUX_SUPERTUX_SCREEN_FADE_HPP
- class DrawingContext;
- /**
- * Screen to be displayed simultaneously with another Screen.
- *
- * This is used for Screen transition effects like a fade-out or a shrink-fade
- */
- class ScreenFade
- {
- public:
- enum class FadeType
- {
- NONE,
- FADE,
- CIRCLE
- };
- virtual ~ScreenFade() {}
- /** returns true if the effect is completed */
- virtual bool done() const = 0;
- /** gets called once per frame. The ScreenFade should draw itself in
- this function. State changes should not be done in this
- function, but rather in update */
- virtual void draw(DrawingContext& context) = 0;
- /** gets called for once (per logical) frame. ScreenFades should do
- their state updates and logic here */
- virtual void update(float dt_sec) = 0;
- };
- #endif
- /* EOF */
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