#ifndef DMSIMPLE_H
#define DMSIMPLE_H

#include "dmlib.h"
#include <SDL_events.h>
#include <SDL_audio.h>
#include "dmres.h"

#ifdef DM_USE_JSS
#include "jss.h"
#include "jssmod.h"
#include "jssmix.h"
#include "jssplr.h"
#endif


typedef struct
{
    int currFrame, endTime, startTime,
        totalFrameTime, adjustTime, pauseTime;

    BOOL pauseFlag, paused, exitFlag;
    SDL_Surface *screen;
    SDL_Event event;

    SDL_AudioSpec optAfmt;
    int optScrWidth, optScrHeight, optVFlags, optBitDepth, optResFlags;
    char *optDataPath, *optPackFilename;

#ifdef DM_USE_JSS
    JSSMixer *dev;
    JSSPlayer *plr;
    int jss_format;
#endif

#ifdef DM_USE_TREMOR
    DMResource *audio;
    size_t audioPos;
#endif

#ifdef DM_DEBUG
    BOOL optDebug;
    Uint8 *audioBuf;
    int audioBufSize;
    int audioSamples;
    int demoDuration;
#endif

    int    (*demoInit)();
    int    (*demoInitPreVideo)();
    int    (*demoInitPostVideo)();
    int    (*demoRender)();
    void   (*demoShutdown)();
    void   (*demoQuit)();

} DMEngineData;


typedef struct
{
    int currFrame, endTime, startTime;
} DMFrameData;


extern DMEngineData engine;
extern DMFrameData frame;


#define engineGetResImage(x, name) \
    do { \
        if ((x = (SDL_Surface *) engineGetResource(name)) == NULL) \
            return DMERR_INIT_FAIL; \
    } while (0)

#define engineGetResModule(x, name) \
    do { \
        if ((x = (JSSModule *) engineGetResource(name)) == NULL) \
            return DMERR_INIT_FAIL; \
    } while (0)


void * engineGetResource(const char *name);
int    engineGetTime(int t);
int    engineGetTimeDTi();
int    engineGetTick();
float  engineGetTimeDT();

int    demoPreInit();

#endif // DMSIMPLE_H