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// T3DLIB3.H - Header file for T3DLIB3.CPP game engine library 
 
// watch for multiple inclusions 
#ifndef T3DLIB3 
#define T3DLIB3 
 
// DEFINES //////////////////////////////////////////////// 
 
 
#define DM_NUM_SEGMENTS 64 // number of midi segments that can be cached in memory 
 
// midi object state defines 
#define MIDI_NULL     0   // this midi object is not loaded 
#define MIDI_LOADED   1   // this midi object is loaded 
#define MIDI_PLAYING  2   // this midi object is loaded and playing 
#define MIDI_STOPPED  3   // this midi object is loaded, but stopped 
 
 
#define MAX_SOUNDS     256 // max number of sounds in system at once  
 
// digital sound object state defines 
#define SOUND_NULL     0 // " " 
#define SOUND_LOADED   1 
#define SOUND_PLAYING  2 
#define SOUND_STOPPED  3 
 
// directx 7.0 compatibility 
 
#ifndef DSBCAPS_CTRLDEFAULT 
#define DSBCAPS_CTRLDEFAULT (DSBCAPS_CTRLFREQUENCY | DSBCAPS_CTRLPAN | DSBCAPS_CTRLVOLUME ) 
#endif 
 
// MACROS ///////////////////////////////////////////////// 
 
#define DSVOLUME_TO_DB(volume) ((DWORD)(-30*(100 - volume))) 
 
// Convert from multibyte format to Unicode using the following macro: 
#define MULTI_TO_WIDE( x,y )  MultiByteToWideChar( CP_ACP,MB_PRECOMPOSED, y,-1,x,_MAX_PATH); 
 
// initializes a direct draw struct 
#define DD_INIT_STRUCT(ddstruct) { memset(&ddstruct,0,sizeof(ddstruct)); ddstruct.dwSize=sizeof(ddstruct); } 
 
 
// TYPES ////////////////////////////////////////////////// 
 
// this holds a single sound 
typedef struct pcm_sound_typ 
	{ 
	LPDIRECTSOUNDBUFFER dsbuffer;   // the ds buffer containing the sound 
	int state;                      // state of the sound 
	int rate;                       // playback rate 
	int size;                       // size of sound 
	int id;                         // id number of the sound 
	} pcm_sound, *pcm_sound_ptr; 
 
// directmusic MIDI segment 
typedef struct DMUSIC_MIDI_TYP 
{ 
IDirectMusicSegment        *dm_segment;  // the directmusic segment 
IDirectMusicSegmentState   *dm_segstate; // the state of the segment 
int                        id;           // the id of this segment                
int                        state;        // state of midi song 
 
} DMUSIC_MIDI, *DMUSIC_MIDI_PTR; 
 
 
// PROTOTYPES ///////////////////////////////////////////// 
 
// directsound 
int DSound_Load_WAV(char *filename, int control_flags = DSBCAPS_CTRLDEFAULT); 
int DSound_Replicate_Sound(int source_id); 
int DSound_Play(int id, int flags=0, int volume=0, int rate=0, int pan=0); 
int DSound_Stop_Sound(int id); 
int DSound_Stop_All_Sounds(void); 
int DSound_Init(void); 
int DSound_Shutdown(void); 
int DSound_Delete_Sound(int id); 
int DSound_Delete_All_Sounds(void); 
int DSound_Status_Sound(int id); 
int DSound_Set_Volume(int id,int vol); 
int DSound_Set_Freq(int id,int freq); 
int DSound_Set_Pan(int id,int pan); 
 
// directmusic 
int DMusic_Load_MIDI(char *filename); 
int DMusic_Play(int id); 
int DMusic_Stop(int id); 
int DMusic_Shutdown(void); 
int DMusic_Delete_MIDI(int id); 
int DMusic_Delete_All_MIDI(void); 
int DMusic_Status_MIDI(int id); 
int DMusic_Init(void); 
 
// directmusic 
 
// GLOBALS //////////////////////////////////////////////// 
 
 
// EXTERNALS ////////////////////////////////////////////// 
 
extern HWND main_window_handle; // save the window handle 
extern HINSTANCE main_instance; // save the instance 
 
extern LPDIRECTSOUND		lpds;           // directsound interface pointer 
extern DSBUFFERDESC			dsbd;           // directsound description 
extern DSCAPS				dscaps;         // directsound caps 
extern HRESULT				dsresult;       // general directsound result 
extern DSBCAPS				dsbcaps;        // directsound buffer caps 
 
extern LPDIRECTSOUNDBUFFER	lpdsbprimary;   // the primary mixing buffer 
extern pcm_sound			sound_fx[MAX_SOUNDS];    // the array of secondary sound buffers 
 
extern WAVEFORMATEX			pcmwf;          // generic waveformat structure 
 
// direct music globals 
extern IDirectMusicPerformance    *dm_perf ;    // the directmusic performance manager  
extern IDirectMusicLoader         *dm_loader;  // the directmusic loader 
 
// this hold all the directmusic midi objects 
extern DMUSIC_MIDI                dm_midi[DM_NUM_SEGMENTS]; 
extern int dm_active_id;                               // currently active midi segment 
 
#endif