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  1.  
  2. #ifndef __INC_METIN_II_UTILS_H__
  3. #define __INC_METIN_II_UTILS_H__
  4.  
  5. #include <math.h>
  6.  
  7. #define IS_SET(flag, bit)       ((flag) & (bit))
  8. #define SET_BIT(var, bit)       ((var) |= (bit))
  9. #define REMOVE_BIT(var, bit)    ((var) &= ~(bit))
  10. #define TOGGLE_BIT(var, bit)    ((var) = (var) ^ (bit))
  11.  
  12. inline float DISTANCE_SQRT(long dx, long dy)
  13. {
  14.     return ::sqrt((float)dx * dx + (float)dy * dy);
  15. }
  16.  
  17. inline int DISTANCE_APPROX(int dx, int dy)
  18. {
  19.     int min, max;
  20.  
  21.     if (dx < 0)
  22.         dx = -dx;
  23.  
  24.     if (dy < 0)
  25.         dy = -dy;
  26.  
  27.     if (dx < dy)
  28.     {
  29.         min = dx;
  30.         max = dy;
  31.     }
  32.     else
  33.     {
  34.         min = dy;
  35.         max = dx;
  36.     }
  37.  
  38.     // coefficients equivalent to ( 123/128 * max ) and ( 51/128 * min )
  39.     return ((( max << 8 ) + ( max << 3 ) - ( max << 4 ) - ( max << 1 ) +
  40.         ( min << 7 ) - ( min << 5 ) + ( min << 3 ) - ( min << 1 )) >> 8 );
  41. }
  42.  
  43. #ifndef __WIN32__
  44. inline WORD MAKEWORD(BYTE a, BYTE b)
  45. {
  46.     return static_cast<WORD>(a) | (static_cast<WORD>(b) << 8);
  47. }
  48. #endif
  49.  
  50. extern void set_global_time(time_t t);
  51. extern time_t get_global_time();
  52.  
  53. extern int  dice(int number, int size);
  54. extern size_t str_lower(const char * src, char * dest, size_t dest_size);
  55.  
  56. extern void skip_spaces(char **string);
  57.  
  58. extern const char * one_argument(const char *argument, char *first_arg, size_t first_size);
  59. extern const char * two_arguments(const char *argument, char *first_arg, size_t first_size, char *second_arg, size_t second_size);
  60. extern const char * three_arguments(const char * argument, char * first_arg, size_t first_size, char * second_arg, size_t second_size, char * third_flag, size_t third_size);
  61. extern const char * first_cmd(const char *argument, char *first_arg, size_t first_arg_size, size_t *first_arg_len_result);
  62. extern void split_argument(const char *argument, std::vector<std::string> & vecArgs);
  63.  
  64. extern int CalculateDuration(int iSpd, int iDur);
  65.  
  66. extern float gauss_random(float avg = 0, float sigma = 1);
  67.  
  68. extern int parse_time_str(const char* str);
  69.  
  70. extern bool WildCaseCmp(const char *w, const char *s);
  71.  
  72. #endif /* __INC_METIN_II_UTILS_H__ */
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