2 // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
4 // This program is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
9 // This program is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with this program. If not, see <http://www.gnu.org/licenses/>.
17 #ifndef HEADER_SUPERTUX_SUPERTUX_SCREEN_HPP
18 #define HEADER_SUPERTUX_SUPERTUX_SCREEN_HPP
23 * Abstract base class for code the MainLoop runs exclusively and full-screen.
25 * Examples of Screens are: The TitleScreen, a WorldMap, a level's
26 * GameSession, a TextScroller, ...
35 * gets called before this screen gets activated (which is at least once
36 * before the first draw or update call
40 /** gets called when the current screen is temporarily suspended */
45 * gets called once per frame. The screen should draw itself in this function.
46 * State changes should not be done in this function, but rather in update
48 virtual void draw(DrawingContext& context) = 0;
51 * gets called for once (per logical) frame. Screens should do their state
52 * updates and logic here
54 virtual void update(float elapsed_time) = 0;