1 | // SuperTux |
2 | // Copyright (C) 2006 Matthias Braun <matze@braunis.de> |
3 | // |
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. |
8 | // |
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. |
13 | // |
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/>. |
16 | |
17 | #ifndef HEADER_SUPERTUX_SUPERTUX_SCREEN_HPP |
18 | #define |
19 | |
20 | class Compositor; |
21 | class Controller; |
22 | |
23 | /** |
24 | * Abstract base class for code the MainLoop runs exclusively and full-screen. |
25 | * |
26 | * Examples of Screens are: The TitleScreen, a WorldMap, a level's |
27 | * GameSession, a TextScroller, ... |
28 | */ |
29 | class Screen |
30 | { |
31 | public: |
32 | virtual ~Screen() |
33 | {} |
34 | |
35 | /** |
36 | * gets called before this screen gets activated (which is at least once |
37 | * before the first draw or update call |
38 | */ |
39 | virtual void setup() |
40 | {} |
41 | /** gets called when the current screen is temporarily suspended */ |
42 | virtual void leave() |
43 | {} |
44 | |
45 | /** |
46 | * gets called once per frame. The screen should draw itself in this function. |
47 | * State changes should not be done in this function, but rather in update |
48 | */ |
49 | virtual void draw(Compositor& compositor) = 0; |
50 | |
51 | /** |
52 | * gets called for once (per logical) frame. Screens should do their state |
53 | * updates and logic here |
54 | */ |
55 | virtual void update(float dt_sec, const Controller& controller) = 0; |
56 | }; |
57 | |
58 | #endif |
59 | |
60 | /* EOF */ |
61 | |