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SDL_framerate.h

SDL_framerate.h 1.1 KB
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  1. 

  2. /*
    3. 

  3. 

  4.  SDL_framerate: framerate manager
    5. 

  5.  
    6. 

  6.  LGPL (c) A. Schiffler
    7. 

  7.  
    8. 

  8.  */
    9. 

  9. 

  10. #ifndef _SDL_framerate_h
    11. 

  11. #define _SDL_framerate_h
    12. 

  12. 

  13. /* Set up for C function definitions, even when using C++ */
    14. 

  14. #ifdef __cplusplus
    15. 

  15. extern "C" {
    16. 

  16. #endif
    17. 

  17. 

  18. /* --- */
    19. 

  19. 

  20. #include "SDL.h"
    21. 

  21. 

  22. /* --------- Definitions */
    23. 

  23. 

  24. /* Some rates in Hz */
    25. 

  25. 

  26. #define FPS_UPPER_LIMIT		200
    27. 

  27. #define FPS_LOWER_LIMIT		1
    28. 

  28. #define FPS_DEFAULT		30
    29. 

  29. 

  30. /* --------- Structure variables */
    31. 

  31. 

  32. 	typedef struct {
    33. 

  33. 	Uint32 framecount;
    34. 

  34. 	float rateticks;
    35. 

  35. 	Uint32 lastticks;
    36. 

  36. 	Uint32 rate;
    37. 

  37. 	} FPSmanager;
    38. 

  38. 

  39. /* --------- Function prototypes */
    40. 

  40. 

  41. #ifdef WIN32
    42. 

  42. #ifdef BUILD_DLL
    43. 

  43. #define DLLINTERFACE __declspec(dllexport)
    44. 

  44. #else
    45. 

  45. #define DLLINTERFACE __declspec(dllimport)
    46. 

  46. #endif
    47. 

  47. #else
    48. 

  48. #define DLLINTERFACE
    49. 

  49. #endif
    50. 

  50. 

  51. /* Functions return 0 or value for sucess and -1 for error */
    52. 

  52. 

  53. 	void SDL_initFramerate(FPSmanager * manager);
    54. 

  54. 	int SDL_setFramerate(FPSmanager * manager, int rate);
    55. 

  55. 	int SDL_getFramerate(FPSmanager * manager);
    56. 

  56. 	void SDL_framerateDelay(FPSmanager * manager);
    57. 

  57. 

  58. /* --- */
    59. 

  59. 

  60. /* Ends C function definitions when using C++ */
    61. 

  61. #ifdef __cplusplus
    62. 

  62. }
    63. 

  63. #endif
    64. 

  64. 

  65. #endif				/* _SDL_framerate_h */
    66.