/* 

 *  WRay_System.c

 *

 *  QuickDraw 3D 1.6 Sample

 *  Robert Dierkes

 *

 *   07/28/98   RDD     Created.

 */

/*------------------*/

/*  Include Files   */

/*------------------*/

#include "QD3D.h"

#if defined(OS_MACINTOSH) && OS_MACINTOSH

#include <CodeFragments.h>  /* kUnresolvedCFragSymbolAddress */

#include <Events.h>         /* KeyMap */

#include <Gestalt.h>

#include <Sound.h>          /* SysBeep, SndPlay */

#include <Resources.h>

#endif

#include "WRay_Main.h"

#include "WRay_System.h"

#include "WRay_Error.h"

/*----------------------*/

/*  Global Declarations */

/*----------------------*/

#if defined(OS_MACINTOSH) && OS_MACINTOSH

static  SndChannelPtr   gChannel = NULL;

#endif

static  TQ3Boolean      gPlaySound = kQ3False;

/*

 *  QuickDraw3D_Initialize

 */

TQ3Boolean QuickDraw3D_Initialize(

            void)

{

    TQ3Status   status = kQ3Failure;

    OSErr       error;

    long        response;

    error = Gestalt(gestaltQD3D, &response);

    if ((error != noErr)  ||

        (! (response & (1 << gestaltQD3DPresent)))) {

        Error_ShowMessage(kQuickDraw3DNotInstalledStr);

        return kQ3False;

    }

    /*

     * Test for specific symbol as recommended in develop, March 1995

     * NOTE: QuickDraw3DLib must be weak linked for this comparison to work.

     */

    if (((void *) Q3Initialize) == (void *) kUnresolvedCFragSymbolAddress) {

        Error_ShowMessage(kQuickDraw3DNotInstalledStr);

        return kQ3False;

    }

    status = Q3Initialize();

    if (status == kQ3Failure) {

        ERROR_DEBUG_STR ("QuickDraw3D_Initialize: Q3Initialize returned failure.");

        return kQ3False;

    }

    error = Gestalt(gestaltQD3DVersion, &response);

    if ((error != noErr)  ||

        (response < kQD3DGestaltVersion_1_6_0)) {

        Error_ShowMessage(kQuickDraw3DNotCurrentStr);

        return kQ3False;

    }

    return kQ3True;

}

/*

 *  QuickDraw3D_Exit

 */

TQ3Boolean QuickDraw3D_Exit(

            void)

{

    TQ3Status   status;

    TQ3Boolean  isGood = kQ3True;

    status = Q3Exit();

    if (status == kQ3Failure) {

        ERROR_DEBUG_STR ("QuickDraw3D_Exit: Q3Exit returned failure.");

        isGood = kQ3False;

    }

#if defined(OS_MACINTOSH) && OS_MACINTOSH

    if (gChannel != NULL) {

        SndDisposeChannel(gChannel, kQ3True);

        gChannel = NULL;

    }

#endif

    return isGood;

}

#pragma mark -

/*

 *  System_IsKeyPressed

 *      Returns true if key is pressed, false otherwise.

 *

 *  Passed:

 *      keyCode - key code to test

 *

 *  Global:

 *      Nothing

 *

 *  Returned:

 *      Returns true if key is down, false otherwise.

 */

Boolean System_IsKeyPressed (

            unsigned short keyCode)

{

#if defined(OS_MACINTOSH) && OS_MACINTOSH

    KeyMap          keyMap;

    unsigned char   *pKeyMap;

    GetKeys (keyMap);

    pKeyMap = (unsigned char *) keyMap;

    return ((pKeyMap [keyCode >> 3] >> (keyCode & 7)) & 1);

#endif

}

/*

 *  System_Beep

 */

void System_Beep (

    void)

{

#if defined(OS_MACINTOSH) && OS_MACINTOSH

    SysBeep(1);

#endif

}

/*

 *  System_GetSound

 */

TQ3Boolean System_GetSound (

    void)

{

    return gPlaySound;

}

/*

 *  System_SetSound

 */

void System_SetSound (

    TQ3Boolean  newState)

{

    gPlaySound = newState;

}

/*

 *  System_Sound

 */

void System_Sound (

    void)

{

#if defined(OS_MACINTOSH) && OS_MACINTOSH

    static  Handle sndHandle = NULL;

    #define kSoundRsrcID    -24680

    if (gPlaySound == kQ3True) {

        if (sndHandle == NULL) {

            /* First time */

            OSErr   osErr = noErr;

            if (gChannel == NULL) {

                osErr = SndNewChannel(&gChannel, 0, 0, 0);

            }

            /* Keep sound resource locked and loaded */

            sndHandle = GetResource('snd ', kSoundRsrcID);

            if (sndHandle != NULL) {

                HLock(sndHandle);

//              HUnlock(sndHandle);

            }

        }

        if (sndHandle != NULL) {

            SndPlay(gChannel, (SndListHandle)sndHandle, 1);

        }

    }

#endif

}

/*

 *  System_RandomFloat

 *

 *  Returns a float value between 0.1 and 1.0, inclusive.

 */

float System_RandomFloat(

            void)

{

    float   value;

    value = (((Random() * TickCount()) % 10) + 1) * 0.1f;

    return value;

}