Mercurial > sdl-ios-xcode
annotate include/SDL_timer.h @ 5152:be02be2ea897
Making the API simpler, removed support for palettized video modes and textures.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 01 Feb 2011 21:23:43 -0800 |
parents | 481dabb098ef |
children | b530ef003506 |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
3697 | 3 Copyright (C) 1997-2010 Sam Lantinga |
0 | 4 |
5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
0 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
22 | |
23 #ifndef _SDL_timer_h | |
24 #define _SDL_timer_h | |
25 | |
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26 /** |
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27 * \file SDL_timer.h |
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28 * |
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29 * Header for the SDL time management routines. |
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30 */ |
0 | 31 |
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32 #include "SDL_stdinc.h" |
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33 #include "SDL_error.h" |
0 | 34 |
35 #include "begin_code.h" | |
36 /* Set up for C function definitions, even when using C++ */ | |
37 #ifdef __cplusplus | |
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38 /* *INDENT-OFF* */ |
0 | 39 extern "C" { |
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40 /* *INDENT-ON* */ |
0 | 41 #endif |
42 | |
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43 /** |
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44 * \brief Get the number of milliseconds since the SDL library initialization. |
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45 * |
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46 * \note This value wraps if the program runs for more than ~49 days. |
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47 */ |
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48 extern DECLSPEC Uint32 SDLCALL SDL_GetTicks(void); |
0 | 49 |
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50 /** |
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51 * \brief Wait a specified number of milliseconds before returning. |
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52 */ |
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53 extern DECLSPEC void SDLCALL SDL_Delay(Uint32 ms); |
0 | 54 |
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55 /** |
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56 * Function prototype for the timer callback function. |
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57 * |
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58 * The callback function is passed the current timer interval and returns |
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59 * the next timer interval. If the returned value is the same as the one |
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60 * passed in, the periodic alarm continues, otherwise a new alarm is |
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61 * scheduled. If the callback returns 0, the periodic alarm is cancelled. |
0 | 62 */ |
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63 typedef Uint32 (SDLCALL * SDL_TimerCallback) (Uint32 interval, void *param); |
0 | 64 |
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65 /** |
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66 * Definition of the timer ID type. |
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67 */ |
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68 typedef int SDL_TimerID; |
0 | 69 |
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70 /** |
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71 * \brief Add a new timer to the pool of timers already running. |
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72 * |
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73 * \return A timer ID, or NULL when an error occurs. |
0 | 74 */ |
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75 extern DECLSPEC SDL_TimerID SDLCALL SDL_AddTimer(Uint32 interval, |
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76 SDL_TimerCallback callback, |
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77 void *param); |
0 | 78 |
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79 /** |
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80 * \brief Remove a timer knowing its ID. |
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81 * |
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82 * \return A boolean value indicating success or failure. |
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83 * |
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84 * \warning It is not safe to remove a timer multiple times. |
0 | 85 */ |
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86 extern DECLSPEC SDL_bool SDLCALL SDL_RemoveTimer(SDL_TimerID t); |
0 | 87 |
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88 |
0 | 89 /* Ends C function definitions when using C++ */ |
90 #ifdef __cplusplus | |
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91 /* *INDENT-OFF* */ |
0 | 92 } |
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93 /* *INDENT-ON* */ |
0 | 94 #endif |
95 #include "close_code.h" | |
96 | |
97 #endif /* _SDL_timer_h */ | |
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98 |
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99 /* vi: set ts=4 sw=4 expandtab: */ |