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e0675225989be571b799ac5eb9b1f7adf2d68e21
Client/Library/dxx8/samples/Multimedia/DirectSound/Play3DSound/play3dsound.cpp
LGram16 e067522598 Initial commit: ROW Client source code 
Game client codebase including:
- CharacterActionControl: Character and creature management
- GlobalScript: Network, items, skills, quests, utilities
- RYLClient: Main client application with GUI and event handlers
- Engine: 3D rendering engine (RYLGL)
- MemoryManager: Custom memory allocation
- Library: Third-party dependencies (DirectX, boost, etc.)
- Tools: Development utilities

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-29 16:24:34 +09:00

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//----------------------------------------------------------------------------
// File: Play3DSound.cpp
//
// Desc: Main application file for the Play3DSound sample. This sample shows how
// to load a wave file and play it using a 3D DirectSound buffer.
//
// Copyright (c) 1999-2001 Microsoft Corp. All rights reserved.
//-----------------------------------------------------------------------------
#define STRICT
#include <windows.h>
#include <basetsd.h>
#include <commctrl.h>
#include <commdlg.h>
#include <mmreg.h>
#include <mmsystem.h>
#include <dxerr8.h>
#include <dsound.h>
#include <math.h>
#include <stdio.h>
#include "resource.h"
#include "DSUtil.h"
#include "DXUtil.h"
//-----------------------------------------------------------------------------
// Function-prototypes
//-----------------------------------------------------------------------------
INT_PTR CALLBACK MainDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam );
VOID OnInitDialog( HWND hDlg );
HRESULT InitDirectSound( HWND hDlg );
HRESULT FreeDirectSound();
VOID SetSlidersPos( HWND hDlg, FLOAT fDopplerValue, FLOAT fRolloffValue, FLOAT fMinDistValue, FLOAT fMaxDistValue );
VOID OnOpenSoundFile( HWND hDlg );
VOID LoadWaveFileIntoBuffer( HWND hDlg, TCHAR* strFileName );
INT_PTR CALLBACK AlgorithmDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam );
HRESULT OnPlaySound( HWND hDlg );
VOID OnSliderChanged( HWND hDlg );
VOID Set3DParameters( FLOAT fDopplerFactor, FLOAT fRolloffFactor, FLOAT fMinDistance, FLOAT fMaxDistance );
VOID EnablePlayUI( HWND hDlg, BOOL bEnable );
VOID OnMovementTimer( HWND hDlg );
VOID UpdateGrid( HWND hDlg, FLOAT x, FLOAT y );
VOID SetObjectProperties( D3DVECTOR* pvPosition, D3DVECTOR* pvVelocity );
FLOAT ConvertLinearSliderPosToLogScale( LONG lSliderPos );
LONG ConvertLogScaleToLinearSliderPosTo( FLOAT fValue );
//-----------------------------------------------------------------------------
// Defines, constants, and global variables
//-----------------------------------------------------------------------------
#define SAFE_DELETE(p) { if(p) { delete (p); (p)=NULL; } }
#define SAFE_RELEASE(p) { if(p) { (p)->Release(); (p)=NULL; } }
#define ORBIT_MAX_RADIUS 5.0f
#define IDT_MOVEMENT_TIMER 1
CSoundManager* g_pSoundManager = NULL;
CSound* g_pSound = NULL;
LPDIRECTSOUND3DBUFFER g_pDS3DBuffer = NULL; // 3D sound buffer
LPDIRECTSOUND3DLISTENER g_pDSListener = NULL; // 3D listener object
DS3DBUFFER g_dsBufferParams; // 3D buffer properties
DS3DLISTENER g_dsListenerParams; // Listener properties
BOOL g_bDeferSettings = FALSE;
BOOL g_bAllowMovementTimer = TRUE;
//-----------------------------------------------------------------------------
// Name: WinMain()
// Desc: Entry point for the application. Since we use a simple dialog for
// user interaction we don't need to pump messages.
//-----------------------------------------------------------------------------
INT APIENTRY WinMain( HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR pCmdLine,
INT nCmdShow )
{
// Init the common control dll
InitCommonControls();
// Display the main dialog box.
DialogBox( hInst, MAKEINTRESOURCE(IDD_MAIN), NULL, MainDlgProc );
return TRUE;
}
//-----------------------------------------------------------------------------
// Name: MainDlgProc()
// Desc: Handles dialog messages
//-----------------------------------------------------------------------------
INT_PTR CALLBACK MainDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam )
{
HRESULT hr;
switch( msg )
{
case WM_INITDIALOG:
OnInitDialog( hDlg );
break;
case WM_COMMAND:
switch( LOWORD(wParam) )
{
case IDC_SOUNDFILE:
OnOpenSoundFile( hDlg );
break;
case IDCANCEL:
EndDialog( hDlg, IDCANCEL );
break;
case IDC_PLAY:
if( FAILED( hr = OnPlaySound( hDlg ) ) )
{
DXTRACE_ERR( TEXT("OnPlaySound"), hr );
MessageBox( hDlg, "Error playing DirectSound buffer."
"Sample will now exit.", "DirectSound Sample",
MB_OK | MB_ICONERROR );
EndDialog( hDlg, IDABORT );
}
break;
case IDC_STOP:
if( g_pSound )
{
g_pSound->Stop();
g_pSound->Reset();
}
// Update the UI controls to show the sound as stopped
EnablePlayUI( hDlg, TRUE );
SetDlgItemText( hDlg, IDC_STATUS, TEXT("Sound stopped.") );
break;
case IDC_DEFER:
g_bDeferSettings = !g_bDeferSettings;
OnSliderChanged( hDlg );
break;
case IDC_APPLY:
// Call the IDirectSound3DListener::CommitDeferredSettings
// method to execute all of the deferred commands at once.
// This is many times more efficent than recomputing everything
// for every call.
if( g_pDSListener )
g_pDSListener->CommitDeferredSettings();
break;
default:
return FALSE; // Didn't handle message
}
break;
case WM_TIMER:
if( wParam == IDT_MOVEMENT_TIMER )
OnMovementTimer( hDlg );
break;
case WM_NOTIFY:
OnSliderChanged( hDlg );
break;
case WM_DESTROY:
// Cleanup everything
KillTimer( hDlg, 1 );
SAFE_RELEASE( g_pDSListener );
SAFE_RELEASE( g_pDS3DBuffer );
SAFE_DELETE( g_pSound );
SAFE_DELETE( g_pSoundManager );
break;
default:
return FALSE; // Didn't handle message
}
return TRUE; // Handled message
}
//-----------------------------------------------------------------------------
// Name: OnInitDialog()
// Desc: Initializes the dialogs (sets up UI controls, etc.)
//-----------------------------------------------------------------------------
VOID OnInitDialog( HWND hDlg )
{
HRESULT hr;
// Load the icon
#ifdef _WIN64
HINSTANCE hInst = (HINSTANCE) GetWindowLongPtr( hDlg, GWLP_HINSTANCE );
#else
HINSTANCE hInst = (HINSTANCE) GetWindowLong( hDlg, GWL_HINSTANCE );
#endif
HICON hIcon = LoadIcon( hInst, MAKEINTRESOURCE( IDR_MAINFRAME ) );
// Create a static IDirectSound in the CSound class.
// Set coop level to DSSCL_PRIORITY, and set primary buffer
// format to stereo, 22kHz and 16-bit output.
g_pSoundManager = new CSoundManager();
hr = g_pSoundManager->Initialize( hDlg, DSSCL_PRIORITY, 2, 22050, 16 );
// Get the 3D listener, so we can control its params
hr |= g_pSoundManager->Get3DListenerInterface( &g_pDSListener );
if( FAILED(hr) )
{
DXTRACE_ERR( TEXT("Get3DListenerInterface"), hr );
MessageBox( hDlg, "Error initializing DirectSound. Sample will now exit.",
"DirectSound Sample", MB_OK | MB_ICONERROR );
EndDialog( hDlg, IDABORT );
return;
}
// Get listener parameters
g_dsListenerParams.dwSize = sizeof(DS3DLISTENER);
g_pDSListener->GetAllParameters( &g_dsListenerParams );
// Set the icon for this dialog.
PostMessage( hDlg, WM_SETICON, ICON_BIG, (LPARAM) hIcon ); // Set big icon
PostMessage( hDlg, WM_SETICON, ICON_SMALL, (LPARAM) hIcon ); // Set small icon
// Create a timer to periodically move the 3D object around
SetTimer( hDlg, IDT_MOVEMENT_TIMER, 0, NULL );
// Set the UI controls
SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
SetDlgItemText( hDlg, IDC_STATUS, TEXT("No file loaded.") );
// Get handles to dialog items
HWND hDopplerSlider = GetDlgItem( hDlg, IDC_DOPPLER_SLIDER );
HWND hRolloffSlider = GetDlgItem( hDlg, IDC_ROLLOFF_SLIDER );
HWND hMinDistSlider = GetDlgItem( hDlg, IDC_MINDISTANCE_SLIDER );
HWND hMaxDistSlider = GetDlgItem( hDlg, IDC_MAXDISTANCE_SLIDER );
HWND hVertSlider = GetDlgItem( hDlg, IDC_VERTICAL_SLIDER );
HWND hHorzSlider = GetDlgItem( hDlg, IDC_HORIZONTAL_SLIDER );
// Set the range and position of the sliders
PostMessage( hDopplerSlider, TBM_SETRANGEMAX, TRUE, 40L );
PostMessage( hDopplerSlider, TBM_SETRANGEMIN, TRUE, 0L );
PostMessage( hRolloffSlider, TBM_SETRANGEMAX, TRUE, 40L );
PostMessage( hRolloffSlider, TBM_SETRANGEMIN, TRUE, 0L );
PostMessage( hMinDistSlider, TBM_SETRANGEMAX, TRUE, 40L );
PostMessage( hMinDistSlider, TBM_SETRANGEMIN, TRUE, 1L );
PostMessage( hMaxDistSlider, TBM_SETRANGEMAX, TRUE, 40L );
PostMessage( hMaxDistSlider, TBM_SETRANGEMIN, TRUE, 1L );
PostMessage( hVertSlider, TBM_SETRANGEMAX, TRUE, 100L );
PostMessage( hVertSlider, TBM_SETRANGEMIN, TRUE, -100L );
PostMessage( hVertSlider, TBM_SETPOS, TRUE, 100L );
PostMessage( hHorzSlider, TBM_SETRANGEMAX, TRUE, 100L );
PostMessage( hHorzSlider, TBM_SETRANGEMIN, TRUE, -100L );
PostMessage( hHorzSlider, TBM_SETPOS, TRUE, 100L );
// Set the position of the sliders
SetSlidersPos( hDlg, 0.0f, 0.0f, ORBIT_MAX_RADIUS, ORBIT_MAX_RADIUS*2.0f );
}
//-----------------------------------------------------------------------------
// Name: SetSlidersPos()
// Desc: Sets the slider positions
//-----------------------------------------------------------------------------
VOID SetSlidersPos( HWND hDlg, FLOAT fDopplerValue, FLOAT fRolloffValue,
FLOAT fMinDistValue, FLOAT fMaxDistValue )
{
HWND hDopplerSlider = GetDlgItem( hDlg, IDC_DOPPLER_SLIDER );
HWND hRolloffSlider = GetDlgItem( hDlg, IDC_ROLLOFF_SLIDER );
HWND hMinDistSlider = GetDlgItem( hDlg, IDC_MINDISTANCE_SLIDER );
HWND hMaxDistSlider = GetDlgItem( hDlg, IDC_MAXDISTANCE_SLIDER );
LONG lDopplerSlider = ConvertLogScaleToLinearSliderPosTo( fDopplerValue );
LONG lRolloffSlider = ConvertLogScaleToLinearSliderPosTo( fRolloffValue );
LONG lMinDistSlider = ConvertLogScaleToLinearSliderPosTo( fMinDistValue );
LONG lMaxDistSlider = ConvertLogScaleToLinearSliderPosTo( fMaxDistValue );
PostMessage( hDopplerSlider, TBM_SETPOS, TRUE, lDopplerSlider );
PostMessage( hRolloffSlider, TBM_SETPOS, TRUE, lRolloffSlider );
PostMessage( hMinDistSlider, TBM_SETPOS, TRUE, lMinDistSlider );
PostMessage( hMaxDistSlider, TBM_SETPOS, TRUE, lMaxDistSlider );
}
//-----------------------------------------------------------------------------
// Name: OnOpenSoundFile()
// Desc: Called when the user requests to open a sound file
//-----------------------------------------------------------------------------
VOID OnOpenSoundFile( HWND hDlg )
{
GUID guid3DAlgorithm = GUID_NULL;
int nResult;
HRESULT hr;
static TCHAR strFileName[MAX_PATH] = TEXT("");
static TCHAR strPath[MAX_PATH] = TEXT("");
// Setup the OPENFILENAME structure
OPENFILENAME ofn = { sizeof(OPENFILENAME), hDlg, NULL,
TEXT("Wave Files\0*.wav\0All Files\0*.*\0\0"), NULL,
0, 1, strFileName, MAX_PATH, NULL, 0, strPath,
TEXT("Open Sound File"),
OFN_FILEMUSTEXIST|OFN_HIDEREADONLY, 0, 0,
TEXT(".wav"), 0, NULL, NULL };
// Get the default media path (something like C:\WINDOWS\MEDIA)
if( '\0' == strPath[0] )
{
GetWindowsDirectory( strPath, MAX_PATH );
if( strcmp( &strPath[strlen(strPath)], TEXT("\\") ) )
strcat( strPath, TEXT("\\") );
strcat( strPath, TEXT("MEDIA") );
}
if( g_pSound )
{
g_pSound->Stop();
g_pSound->Reset();
}
// Update the UI controls to show the sound as loading a file
EnableWindow( GetDlgItem( hDlg, IDC_PLAY ), FALSE);
EnableWindow( GetDlgItem( hDlg, IDC_STOP ), FALSE);
SetDlgItemText( hDlg, IDC_STATUS, TEXT("Loading file...") );
// Stop the timer while dialogs are displayed
g_bAllowMovementTimer = FALSE;
// Display the OpenFileName dialog. Then, try to load the specified file
if( TRUE != GetOpenFileName( &ofn ) )
{
SetDlgItemText( hDlg, IDC_STATUS, TEXT("Load aborted.") );
g_bAllowMovementTimer = TRUE;
return;
}
SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
// Free any previous sound, and make a new one
SAFE_DELETE( g_pSound );
CWaveFile waveFile;
waveFile.Open( strFileName, NULL, WAVEFILE_READ );
WAVEFORMATEX* pwfx = waveFile.GetFormat();
if( pwfx == NULL )
{
SetDlgItemText( hDlg, IDC_STATUS, TEXT("Invalid wave file format.") );
return;
}
if( pwfx->nChannels > 1 )
{
// Too many channels in wave. Sound must be mono when using DSBCAPS_CTRL3D
SetDlgItemText( hDlg, IDC_STATUS, TEXT("Wave file must be mono for 3D control.") );
SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
return;
}
if( pwfx->wFormatTag != WAVE_FORMAT_PCM )
{
// Sound must be PCM when using DSBCAPS_CTRL3D
SetDlgItemText( hDlg, IDC_STATUS, TEXT("Wave file must be PCM for 3D control.") );
SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
return;
}
// Get the software DirectSound3D emulation algorithm to use
// Ask the user for this sample, so display the algorithm dialog box.
nResult = (int)DialogBox( NULL, MAKEINTRESOURCE(IDD_3D_ALGORITHM),
NULL, AlgorithmDlgProc );
switch( nResult )
{
case -1: // User canceled dialog box
SetDlgItemText( hDlg, IDC_STATUS, TEXT("Load aborted.") );
SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
return;
case 0: // User selected DS3DALG_NO_VIRTUALIZATION
guid3DAlgorithm = DS3DALG_NO_VIRTUALIZATION;
break;
case 1: // User selected DS3DALG_HRTF_FULL
guid3DAlgorithm = DS3DALG_HRTF_FULL;
break;
case 2: // User selected DS3DALG_HRTF_LIGHT
guid3DAlgorithm = DS3DALG_HRTF_LIGHT;
break;
}
// Load the wave file into a DirectSound buffer
hr = g_pSoundManager->Create( &g_pSound, strFileName, DSBCAPS_CTRL3D, guid3DAlgorithm );
if( FAILED( hr ) || hr == DS_NO_VIRTUALIZATION )
{
DXTRACE_ERR_NOMSGBOX( TEXT("Create"), hr );
if( DS_NO_VIRTUALIZATION == hr )
{
MessageBox( hDlg, "The 3D virtualization algorithm requested is not supported under this "
"operating system. It is available only on Windows 2000, Windows ME, and Windows 98 with WDM "
"drivers and beyond. Creating buffer with no virtualization.",
"DirectSound Sample", MB_OK );
}
// Unknown error, but not a critical failure, so just update the status
SetDlgItemText( hDlg, IDC_FILENAME, TEXT("Could not create sound buffer.") );
return;
}
// Get the 3D buffer from the secondary buffer
if( FAILED( hr = g_pSound->Get3DBufferInterface( 0, &g_pDS3DBuffer ) ) )
{
DXTRACE_ERR( TEXT("Get3DBufferInterface"), hr );
SetDlgItemText( hDlg, IDC_STATUS, TEXT("Could not get 3D buffer.") );
SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
return;
}
// Get the 3D buffer parameters
g_dsBufferParams.dwSize = sizeof(DS3DBUFFER);
g_pDS3DBuffer->GetAllParameters( &g_dsBufferParams );
// Set new 3D buffer parameters
g_dsBufferParams.dwMode = DS3DMODE_HEADRELATIVE;
g_pDS3DBuffer->SetAllParameters( &g_dsBufferParams, DS3D_IMMEDIATE );
DSBCAPS dsbcaps;
ZeroMemory( &dsbcaps, sizeof(DSBCAPS) );
dsbcaps.dwSize = sizeof(DSBCAPS);
LPDIRECTSOUNDBUFFER pDSB = g_pSound->GetBuffer( 0 );
pDSB->GetCaps( &dsbcaps );
if( ( dsbcaps.dwFlags & DSBCAPS_LOCHARDWARE ) != 0 )
SetDlgItemText( hDlg, IDC_STATUS, TEXT("File loaded using hardware mixing.") );
else
SetDlgItemText( hDlg, IDC_STATUS, TEXT("File loaded using software mixing.") );
// Update the UI controls to show the sound as the file is loaded
SetDlgItemText( hDlg, IDC_FILENAME, strFileName );
EnablePlayUI( hDlg, TRUE );
g_bAllowMovementTimer = TRUE;
// Remember the path for next time
strcpy( strPath, strFileName );
char* strLastSlash = strrchr( strPath, '\\' );
strLastSlash[0] = '\0';
// Set the slider positions
SetSlidersPos( hDlg, 0.0f, 0.0f, ORBIT_MAX_RADIUS, ORBIT_MAX_RADIUS*2.0f );
OnSliderChanged( hDlg );
}
//-----------------------------------------------------------------------------
// Name: AlgorithmDlgProc()
// Desc: Handles dialog messages
//-----------------------------------------------------------------------------
INT_PTR CALLBACK AlgorithmDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam )
{
// Default is DS3DALG_NO_VIRTUALIZATION for fastest performance
static int nDefaultRadio = IDC_NO_VIRT_RADIO;
switch( msg )
{
case WM_INITDIALOG:
// Default is DS3DALG_NO_VIRTUALIZATION for fastest performance
CheckRadioButton( hDlg, IDC_NO_VIRT_RADIO, IDC_LIGHT_VIRT_RADIO, nDefaultRadio );
return TRUE; // Message handled
case WM_COMMAND:
switch( LOWORD(wParam) )
{
case IDCANCEL:
EndDialog( hDlg, -1 );
return TRUE; // Message handled
case IDOK:
if( IsDlgButtonChecked( hDlg, IDC_NO_VIRT_RADIO ) == BST_CHECKED )
{
nDefaultRadio = IDC_NO_VIRT_RADIO;
EndDialog( hDlg, 0 );
}
if( IsDlgButtonChecked( hDlg, IDC_HIGH_VIRT_RADIO ) == BST_CHECKED )
{
nDefaultRadio = IDC_HIGH_VIRT_RADIO;
EndDialog( hDlg, 1 );
}
if( IsDlgButtonChecked( hDlg, IDC_LIGHT_VIRT_RADIO ) == BST_CHECKED )
{
nDefaultRadio = IDC_LIGHT_VIRT_RADIO;
EndDialog( hDlg, 2 );
}
return TRUE; // Message handled
}
break;
}
return FALSE; // Message not handled
}
//-----------------------------------------------------------------------------
// Name: OnPlaySound()
// Desc: User hit the "Play" button
//-----------------------------------------------------------------------------
HRESULT OnPlaySound( HWND hDlg )
{
HRESULT hr;
if( NULL == g_pSound )
return E_FAIL;
// Play buffer always in looped mode just for this sample
if( FAILED( hr = g_pSound->Play( 0, DSBPLAY_LOOPING ) ) )
return DXTRACE_ERR( TEXT("Play"), hr );
// Update the UI controls to show the sound as playing
EnablePlayUI( hDlg, FALSE );
SetDlgItemText( hDlg, IDC_STATUS, TEXT("Sound playing.") );
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: OnSliderChanged()
// Desc: Called when the dialog's slider bars are changed by the user, or need
// updating
//-----------------------------------------------------------------------------
VOID OnSliderChanged( HWND hDlg )
{
TCHAR strBuffer[10];
FLOAT fDopplerFactor;
FLOAT fRolloffFactor;
FLOAT fMinDistance;
FLOAT fMaxDistance;
// Get handles to dialog items
HWND hDopplerSlider = GetDlgItem( hDlg, IDC_DOPPLER_SLIDER );
HWND hRolloffSlider = GetDlgItem( hDlg, IDC_ROLLOFF_SLIDER );
HWND hMinDistSlider = GetDlgItem( hDlg, IDC_MINDISTANCE_SLIDER );
HWND hMaxDistSlider = GetDlgItem( hDlg, IDC_MAXDISTANCE_SLIDER );
// Get the position of the sliders
fDopplerFactor = ConvertLinearSliderPosToLogScale( (long)SendMessage( hDopplerSlider, TBM_GETPOS, 0, 0 ) );
fRolloffFactor = ConvertLinearSliderPosToLogScale( (long)SendMessage( hRolloffSlider, TBM_GETPOS, 0, 0 ) );
fMinDistance = ConvertLinearSliderPosToLogScale( (long)SendMessage( hMinDistSlider, TBM_GETPOS, 0, 0 ) );
fMaxDistance = ConvertLinearSliderPosToLogScale( (long)SendMessage( hMaxDistSlider, TBM_GETPOS, 0, 0 ) );
// Set the static text boxes
sprintf( strBuffer, TEXT("%.2f"), fDopplerFactor );
SetWindowText( GetDlgItem( hDlg, IDC_DOPPLERFACTOR ), strBuffer );
sprintf( strBuffer, TEXT("%.2f"), fRolloffFactor );
SetWindowText( GetDlgItem( hDlg, IDC_ROLLOFFFACTOR ), strBuffer );
sprintf( strBuffer, TEXT("%.2f"), fMinDistance );
SetWindowText( GetDlgItem( hDlg, IDC_MINDISTANCE ), strBuffer );
sprintf( strBuffer, TEXT("%.2f"), fMaxDistance );
SetWindowText( GetDlgItem( hDlg, IDC_MAXDISTANCE ), strBuffer );
// Set the options in the DirectSound buffer
Set3DParameters( fDopplerFactor, fRolloffFactor, fMinDistance, fMaxDistance );
EnableWindow( GetDlgItem( hDlg, IDC_APPLY ), g_bDeferSettings );
}
//-----------------------------------------------------------------------------
// Name: Set3DParameters()
// Desc: Set the 3D buffer parameters
//-----------------------------------------------------------------------------
VOID Set3DParameters( FLOAT fDopplerFactor, FLOAT fRolloffFactor,
FLOAT fMinDistance, FLOAT fMaxDistance )
{
// Every change to 3-D sound buffer and listener settings causes
// DirectSound to remix, at the expense of CPU cycles.
// To minimize the performance impact of changing 3-D settings,
// use the DS3D_DEFERRED flag in the dwApply parameter of any of
// the IDirectSound3DListener or IDirectSound3DBuffer methods that
// change 3-D settings. Then call the IDirectSound3DListener::CommitDeferredSettings
// method to execute all of the deferred commands at once.
DWORD dwApplyFlag = ( g_bDeferSettings ) ? DS3D_DEFERRED : DS3D_IMMEDIATE;
g_dsListenerParams.flDopplerFactor = fDopplerFactor;
g_dsListenerParams.flRolloffFactor = fRolloffFactor;
if( g_pDSListener )
g_pDSListener->SetAllParameters( &g_dsListenerParams, dwApplyFlag );
g_dsBufferParams.flMinDistance = fMinDistance;
g_dsBufferParams.flMaxDistance = fMaxDistance;
if( g_pDS3DBuffer )
g_pDS3DBuffer->SetAllParameters( &g_dsBufferParams, dwApplyFlag );
}
//-----------------------------------------------------------------------------
// Name: EnablePlayUI()
// Desc: Enables or disables the Play UI controls
//-----------------------------------------------------------------------------
VOID EnablePlayUI( HWND hDlg, BOOL bEnable )
{
if( bEnable )
{
EnableWindow( GetDlgItem( hDlg, IDC_PLAY ), TRUE );
EnableWindow( GetDlgItem( hDlg, IDC_STOP ), FALSE );
SetFocus( GetDlgItem( hDlg, IDC_PLAY ) );
}
else
{
EnableWindow( GetDlgItem( hDlg, IDC_PLAY ), FALSE );
EnableWindow( GetDlgItem( hDlg, IDC_STOP ), TRUE );
SetFocus( GetDlgItem( hDlg, IDC_STOP ) );
}
}
//-----------------------------------------------------------------------------
// Name: OnMovementTimer()
// Desc: Periodically updates the position of the object
//-----------------------------------------------------------------------------
VOID OnMovementTimer( HWND hDlg )
{
FLOAT fXScale;
FLOAT fYScale;
if( !g_bAllowMovementTimer )
return;
HWND hHorzSlider = GetDlgItem( hDlg, IDC_HORIZONTAL_SLIDER );
HWND hVertSlider = GetDlgItem( hDlg, IDC_VERTICAL_SLIDER );
fXScale = SendMessage( hHorzSlider, TBM_GETPOS, 0, 0 ) / 100.0f;
fYScale = SendMessage( hVertSlider, TBM_GETPOS, 0, 0 ) / 100.0f;
FLOAT t = timeGetTime()/1000.0f;
// Move the sound object around the listener. The maximum radius of the
// orbit is 27.5 units.
D3DVECTOR vPosition;
vPosition.x = ORBIT_MAX_RADIUS * fXScale * (FLOAT)sin(t);
vPosition.y = 0.0f;
vPosition.z = ORBIT_MAX_RADIUS * fYScale * (FLOAT)cos(t);
D3DVECTOR vVelocity;
vVelocity.x = ORBIT_MAX_RADIUS * fXScale * (FLOAT)sin(t+0.05f);
vVelocity.y = 0.0f;
vVelocity.z = ORBIT_MAX_RADIUS * fYScale * (FLOAT)cos(t+0.05f);
// Show the object's position on the dialog's grid control
UpdateGrid( hDlg, vPosition.x, vPosition.z );
// Set the sound buffer velocity and position
SetObjectProperties( &vPosition, &vVelocity );
}
//-----------------------------------------------------------------------------
// Name: UpdateGrid()
// Desc: Draws a red dot in the dialog's grid bitmap at the x,y coordinate.
//-----------------------------------------------------------------------------
VOID UpdateGrid( HWND hDlg, FLOAT x, FLOAT y )
{
static LONG s_lPixel[5] = { CLR_INVALID,CLR_INVALID,CLR_INVALID,CLR_INVALID,CLR_INVALID };
static LONG s_lX = 0;
static LONG s_lY = 0;
HWND hWndGrid = GetDlgItem( hDlg, IDC_RENDER_WINDOW );
HDC hDC = GetDC( hWndGrid );
RECT rc;
// Don't update the grid if a WM_PAINT will be called soon
BOOL bUpdateInProgress = GetUpdateRect(hDlg,NULL,FALSE);
if( bUpdateInProgress )
return;
if( s_lPixel[0] != CLR_INVALID )
{
// Replace pixels from that were overdrawn last time
SetPixel( hDC, s_lX-1, s_lY+0, s_lPixel[0] );
SetPixel( hDC, s_lX+0, s_lY-1, s_lPixel[1] );
SetPixel( hDC, s_lX+0, s_lY+0, s_lPixel[2] );
SetPixel( hDC, s_lX+0, s_lY+1, s_lPixel[3] );
SetPixel( hDC, s_lX+1, s_lY+0, s_lPixel[4] );
}
// Convert the world space x,y coordinates to pixel coordinates
GetClientRect( hWndGrid, &rc );
s_lX = (LONG)( ( x/ORBIT_MAX_RADIUS + 1 ) * ( rc.left + rc.right ) / 2 );
s_lY = (LONG)( (-y/ORBIT_MAX_RADIUS + 1 ) * ( rc.top + rc.bottom ) / 2 );
// Save the pixels before drawing the cross hair
s_lPixel[0] = GetPixel( hDC, s_lX-1, s_lY+0 );
s_lPixel[1] = GetPixel( hDC, s_lX+0, s_lY-1 );
s_lPixel[2] = GetPixel( hDC, s_lX+0, s_lY+0 );
s_lPixel[3] = GetPixel( hDC, s_lX+0, s_lY+1 );
s_lPixel[4] = GetPixel( hDC, s_lX+1, s_lY+0 );
// Draw a crosshair object in red pixels
SetPixel( hDC, s_lX-1, s_lY+0, 0x000000ff );
SetPixel( hDC, s_lX+0, s_lY-1, 0x000000ff );
SetPixel( hDC, s_lX+0, s_lY+0, 0x000000ff );
SetPixel( hDC, s_lX+0, s_lY+1, 0x000000ff );
SetPixel( hDC, s_lX+1, s_lY+0, 0x000000ff );
ReleaseDC( hWndGrid, hDC );
}
//-----------------------------------------------------------------------------
// Name: SetObjectProperties()
// Desc: Sets the position and velocity on the 3D buffer
//-----------------------------------------------------------------------------
VOID SetObjectProperties( D3DVECTOR* pvPosition, D3DVECTOR* pvVelocity )
{
// Every change to 3-D sound buffer and listener settings causes
// DirectSound to remix, at the expense of CPU cycles.
// To minimize the performance impact of changing 3-D settings,
// use the DS3D_DEFERRED flag in the dwApply parameter of any of
// the IDirectSound3DListener or IDirectSound3DBuffer methods that
// change 3-D settings. Then call the IDirectSound3DListener::CommitDeferredSettings
// method to execute all of the deferred commands at once.
memcpy( &g_dsBufferParams.vPosition, pvPosition, sizeof(D3DVECTOR) );
memcpy( &g_dsBufferParams.vVelocity, pvVelocity, sizeof(D3DVECTOR) );
if( g_pDS3DBuffer )
g_pDS3DBuffer->SetAllParameters( &g_dsBufferParams, DS3D_IMMEDIATE );
}
//-----------------------------------------------------------------------------
// Name: ConvertLinearSliderPosToLogScale()
// Desc: Converts a linear slider position to a quasi logrithmic scale
//-----------------------------------------------------------------------------
FLOAT ConvertLinearSliderPosToLogScale( LONG lSliderPos )
{
if( lSliderPos > 0 && lSliderPos <= 10 )
{
return lSliderPos*0.01f;
}
else if( lSliderPos > 10 && lSliderPos <= 20 )
{
return (lSliderPos-10)*0.1f;
}
else if( lSliderPos > 20 && lSliderPos <= 30 )
{
return (lSliderPos-20)*1.0f;
}
else if( lSliderPos > 30 && lSliderPos <= 40 )
{
return (lSliderPos-30)*10.0f;
}
return 0.0f;
}
//-----------------------------------------------------------------------------
// Name: ConvertLinearSliderPosToLogScale()
// Desc: Converts a quasi logrithmic scale to a slider position
//-----------------------------------------------------------------------------
LONG ConvertLogScaleToLinearSliderPosTo( FLOAT fValue )
{
if( fValue > 0.0f && fValue <= 0.1f )
{
return (LONG)(fValue/0.01f);
}
else if( fValue > 0.1f && fValue <= 1.0f )
{
return (LONG)(fValue/0.1f) + 10;
}
else if( fValue > 1.0f && fValue <= 10.0f )
{
return (LONG)(fValue/1.0f) + 20;
}
else if( fValue > 10.0f && fValue <= 100.0f )
{
return (LONG)(fValue/10.0f) + 30;
}
return 0;
}
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