badge/ui/event.h

   1 #ifndef INCLUDED_BADGE2013_BADGE_UI_EVENT_H
   2 #define INCLUDED_BADGE2013_BADGE_UI_EVENT_H
   3
   4 #include <stdint.h>
   5
   6 #ifdef __cplusplus
   7 extern "C" {
   8 #endif
   9
  10   enum {
  11     BADGE_EVENT_USER_INPUT,
  12     BADGE_EVENT_GAME_TICK
  13   };
  14
  15   enum {
  16     BADGE_EVENT_KEY_UP     =  1,
  17     BADGE_EVENT_KEY_LEFT   =  2,
  18     BADGE_EVENT_KEY_DOWN   =  4,
  19     BADGE_EVENT_KEY_RIGHT  =  8,
  20     BADGE_EVENT_KEY_CENTER = 16,
  21     BADGE_EVENT_KEY_BTN_A  = 32,
  22     BADGE_EVENT_KEY_BTN_B  = 64
  23   };
  24
  25   typedef uint16_t badge_event_t;
  26
  27   static inline uint8_t badge_event_type           (badge_event_t event) { return (uint8_t) (event      & 0x03); }
  28   static inline uint8_t badge_event_old_input_state(badge_event_t event) { return (uint8_t) (event >> 2 & 0x7f); }
  29   static inline uint8_t badge_event_new_input_state(badge_event_t event) { return (uint8_t) (event >> 9       ); }
  30
  31   uint8_t badge_input_raw(void);
  32   uint8_t badge_event_current_input_state(void);
  33
  34   static inline badge_event_t badge_event_new(uint8_t type, uint8_t old_input_state, uint8_t new_input_state) {
  35     return (badge_event_t) ((type & 0x3) | ((badge_event_t) (old_input_state & 0x7f) << 2) | ((badge_event_t) (new_input_state & 0x7f) << 9));
  36   }
  37
  38   badge_event_t badge_event_wait(void);
  39   void          badge_event_start(void);
  40   void          badge_event_stop (void);
  41
  42 #ifdef __cplusplus
  43 }
  44 #endif
  45
  46 #endif