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- //-----------------------------------------------------------------------------
- // File: 3DAudio.cpp
- //
- // Desc: Plays a primary segment using DirectMusic
- //
- // Copyright (c) 2000-2001 Microsoft Corporation. All rights reserved.
- //-----------------------------------------------------------------------------
- #define STRICT
- #include <windows.h>
- #include <basetsd.h>
- #include <commdlg.h>
- #include <commctrl.h>
- #include <dmusicc.h>
- #include <dmusici.h>
- #include <dxerr8.h>
- #include <cguid.h>
- #include <math.h>
- #include <stdio.h>
- #include "resource.h"
- #include "DMUtil.h"
- #include "DXUtil.h"
-
-
-
-
- //-----------------------------------------------------------------------------
- // Function-prototypes
- //-----------------------------------------------------------------------------
- INT_PTR CALLBACK MainDlgProc( HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam );
- VOID OnInitDialog( HWND hDlg );
- HRESULT InitAudio( HWND hDlg );
- VOID SetSlidersPos( HWND hDlg, FLOAT fDopplerValue, FLOAT fRolloffValue, FLOAT fMinDistValue, FLOAT fMaxDistValue );
- VOID OnOpenAudioFile( HWND hDlg );
- HRESULT LoadSegmentFile( HWND hDlg, TCHAR* strFileName );
- HRESULT OnPlayAudio( HWND hDlg );
- VOID EnablePlayUI( HWND hDlg, BOOL bEnable );
- VOID OnMovementTimer( HWND hDlg );
- VOID Set3DParameters( FLOAT fDopplerFactor, FLOAT fRolloffFactor, FLOAT fMinDistance, FLOAT fMaxDistance );
- VOID EnablePlayUI( HWND hDlg, BOOL bEnable );
- VOID SetObjectProperties( D3DVECTOR* pvPosition, D3DVECTOR* pvVelocity );
- VOID UpdateGrid( HWND hDlg, FLOAT x, FLOAT y );
- VOID OnSliderChanged( HWND hDlg );
- VOID SetObjectProperties( D3DVECTOR* pvPosition, D3DVECTOR* pvVelocity );
- FLOAT ConvertLinearSliderPosToLogScale( LONG lSliderPos );
- LONG ConvertLogScaleToLinearSliderPosTo( FLOAT fValue );
-
-
-
-
-
- //-----------------------------------------------------------------------------
- // Defines, constants, and global variables
- //-----------------------------------------------------------------------------
- #define ORBIT_MAX_RADIUS 5.0f
- #define IDT_MOVEMENT_TIMER 1
-
- CMusicManager* g_pMusicManager = NULL;
- CMusicSegment* g_pMusicSegment = NULL;
- IDirectMusicAudioPath* g_p3DAudioPath = NULL;
- IDirectSound3DBuffer* g_pDS3DBuffer = NULL; // 3D sound buffer
- IDirectSound3DListener* g_pDSListener = NULL; // 3D listener object
- DS3DBUFFER g_dsBufferParams; // 3D buffer properties
- DS3DLISTENER g_dsListenerParams; // Listener properties
- HINSTANCE g_hInst = NULL;
- BOOL g_bAllowMovementTimer = TRUE;
- BOOL g_bDeferSettings = FALSE;
-
-
-
-
- //-----------------------------------------------------------------------------
- // 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 )
- {
- g_hInst = hInst;
-
- 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:
- OnOpenAudioFile( hDlg );
- break;
-
- case IDCANCEL:
- EndDialog( hDlg, 0 );
- break;
-
- case IDC_PLAY:
- if( FAILED( hr = OnPlayAudio( hDlg ) ) )
- {
- DXTRACE_ERR( TEXT("OnPlayAudio"), hr );
- MessageBox( hDlg, "Error playing DirectMusic segment. "
- "Sample will now exit.", "DirectMusic Sample",
- MB_OK | MB_ICONERROR );
- EndDialog( hDlg, 0 );
- }
- break;
-
- case IDC_STOP:
- if( g_pMusicSegment )
- {
- g_pMusicSegment->Stop( DMUS_SEGF_BEAT );
- EnablePlayUI( hDlg, TRUE );
- }
- 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
- if( g_pMusicSegment )
- {
- g_pMusicSegment->Unload( g_p3DAudioPath );
- SAFE_DELETE( g_pMusicSegment );
- }
-
- KillTimer( hDlg, 1 );
- SAFE_RELEASE( g_pDSListener );
- SAFE_RELEASE( g_pDS3DBuffer );
- SAFE_RELEASE( g_p3DAudioPath );
-
- SAFE_DELETE( g_pMusicManager );
- 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
- HICON hIcon = LoadIcon( g_hInst, MAKEINTRESOURCE( IDR_MAINFRAME ) );
-
- // Set the icon for this dialog.
- SendMessage( hDlg, WM_SETICON, ICON_BIG, (LPARAM) hIcon ); // Set big icon
- SendMessage( hDlg, WM_SETICON, ICON_SMALL, (LPARAM) hIcon ); // Set small icon
-
- if( FAILED( hr = InitAudio( hDlg ) ) )
- {
- DXTRACE_ERR( TEXT("InitAudio"), hr );
- MessageBox( hDlg, "Error initializing DirectMusic. Sample will now exit.",
- "DirectMusic Sample", MB_OK | MB_ICONERROR );
- EndDialog( hDlg, 0 );
- return;
- }
-
- // Set the default media path (something like C:\MSSDK\SAMPLES\MULTIMEDIA\MEDIA)
- // to be used as the search directory for finding DirectMusic content.
- g_pMusicManager->SetSearchDirectory( DXUtil_GetDXSDKMediaPath() );
-
- // Load a default music segment
- TCHAR strFileName[MAX_PATH];
- strcpy( strFileName, DXUtil_GetDXSDKMediaPath() );
- strcat( strFileName, "sample.sgt" );
- if( S_FALSE == LoadSegmentFile( hDlg, strFileName ) )
- {
- // Set the UI controls
- SetDlgItemText( hDlg, IDC_FILENAME, TEXT("No file loaded.") );
- }
-
- // Create a timer to periodically move the 3D object around
- SetTimer( hDlg, IDT_MOVEMENT_TIMER, 5, NULL );
-
- // 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, 10L );
-
- PostMessage( hHorzSlider, TBM_SETRANGEMAX, TRUE, 100L );
- PostMessage( hHorzSlider, TBM_SETRANGEMIN, TRUE, -100L );
- PostMessage( hHorzSlider, TBM_SETPOS, TRUE, 50L );
-
- // Set the position of the sliders
- SetSlidersPos( hDlg, 0.0f, 0.0f, ORBIT_MAX_RADIUS, ORBIT_MAX_RADIUS*2.0f );
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: InitAudio()
- // Desc: Init both DirectMusic and DirectSound
- //-----------------------------------------------------------------------------
- HRESULT InitAudio( HWND hDlg )
- {
- HRESULT hr;
-
- // Initialize the performance. This initializes both DirectMusic and DirectSound
- // and optionally sets up the synthesizer and default audio path.
- // However, since this app never uses the default audio path, we don't bother
- // to do that here.
- g_pMusicManager = new CMusicManager();
- if( FAILED( hr = g_pMusicManager->Initialize( hDlg ) ) )
- return DXTRACE_ERR( TEXT("Initialize"), hr );
-
- IDirectMusicPerformance8* pPerformance = g_pMusicManager->GetPerformance();
-
- // Create a 3D audiopath with a 3d buffer.
- // We can then play all segments into this buffer and directly control its
- // 3D parameters.
- if( FAILED( hr = pPerformance->CreateStandardAudioPath( DMUS_APATH_DYNAMIC_3D,
- 64, TRUE, &g_p3DAudioPath ) ) )
- return DXTRACE_ERR( TEXT("CreateStandardAudioPath"), hr );
-
- // Get the 3D buffer in the audio path.
- if( FAILED( hr = g_p3DAudioPath->GetObjectInPath( 0, DMUS_PATH_BUFFER, 0,
- GUID_NULL, 0, IID_IDirectSound3DBuffer,
- (LPVOID*) &g_pDS3DBuffer ) ) )
- return DXTRACE_ERR( TEXT("GetObjectInPath"), hr );
-
- // 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 );
-
- // Get the listener from the in the audio path.
- if( FAILED( hr = g_p3DAudioPath->GetObjectInPath( 0, DMUS_PATH_PRIMARY_BUFFER, 0,
- GUID_NULL, 0, IID_IDirectSound3DListener,
- (LPVOID*) &g_pDSListener ) ) )
- return DXTRACE_ERR( TEXT("GetObjectInPath"), hr );
-
- // Get listener parameters
- g_dsListenerParams.dwSize = sizeof(DS3DLISTENER);
- g_pDSListener->GetAllParameters( &g_dsListenerParams );
-
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // 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 );
-
- SendMessage( hDopplerSlider, TBM_SETPOS, TRUE, lDopplerSlider );
- SendMessage( hRolloffSlider, TBM_SETPOS, TRUE, lRolloffSlider );
- SendMessage( hMinDistSlider, TBM_SETPOS, TRUE, lMinDistSlider );
- SendMessage( hMaxDistSlider, TBM_SETPOS, TRUE, lMaxDistSlider );
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnOpenAudioFile()
- // Desc: Called when the user requests to open a sound file
- //-----------------------------------------------------------------------------
- VOID OnOpenAudioFile( HWND hDlg )
- {
- static TCHAR strFileName[MAX_PATH] = TEXT("");
- static TCHAR strPath[MAX_PATH] = TEXT("");
-
- // Get the default media path (something like C:\MSSDK\SAMPLES\DMUSIC\MEDIA)
- if( '\0' == strPath[0] )
- {
- const TCHAR* szDir = DXUtil_GetDXSDKMediaPath();
- strcpy( strPath, szDir );
- }
-
- // Setup the OPENFILENAME structure
- OPENFILENAME ofn = { sizeof(OPENFILENAME), hDlg, NULL,
- TEXT("DirectMusic Content Files\0*.sgt;*.mid;*.rmi\0Wave Files\0*.wav\0All Files\0*.*\0\0"), NULL,
- 0, 1, strFileName, MAX_PATH, NULL, 0, strPath,
- TEXT("Open Content File"),
- OFN_FILEMUSTEXIST|OFN_HIDEREADONLY, 0, 0,
- TEXT(".sgt"), 0, NULL, NULL };
-
- if( g_pMusicSegment )
- g_pMusicSegment->Stop( 0 );
-
- // 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_FILENAME, 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_FILENAME, TEXT("Load aborted.") );
- g_bAllowMovementTimer = TRUE;
- return;
- }
-
- if( S_FALSE == LoadSegmentFile( hDlg, strFileName ) )
- {
- // Not a critical failure, so just update the status
- SetDlgItemText( hDlg, IDC_FILENAME, TEXT("Could not create segment from file.") );
- }
-
- g_bAllowMovementTimer = TRUE;
-
- // Remember the path for next time
- strcpy( strPath, strFileName );
- char* strLastSlash = strrchr( strPath, '\\' );
- strLastSlash[0] = '\0';
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: LoadSegmentFile()
- // Desc:
- //-----------------------------------------------------------------------------
- HRESULT LoadSegmentFile( HWND hDlg, TCHAR* strFileName )
- {
- HRESULT hr;
-
- SetDlgItemText( hDlg, IDC_FILENAME, TEXT("") );
-
- // Free any previous segment, and make a new one
- SAFE_DELETE( g_pMusicSegment );
-
- // Have the loader collect any garbage now that the old
- // segment has been released
- g_pMusicManager->CollectGarbage();
-
- // For DirectMusic must know if the file is a standard MIDI file or not
- // in order to load the correct instruments.
- BOOL bMidiFile = FALSE;
- if( strstr( strFileName, ".mid" ) != NULL ||
- strstr( strFileName, ".rmi" ) != NULL )
- {
- bMidiFile = TRUE;
- }
-
- // Load the file into a DirectMusic segment, but don't download
- // it to the default audio path -- use the 3D audio path instead
- if( FAILED( g_pMusicManager->CreateSegmentFromFile( &g_pMusicSegment, strFileName,
- FALSE, bMidiFile ) ) )
- {
- // Not a critical failure, so just update the status
- return S_FALSE;
- }
-
- // Download the segment on the 3D audio path
- if( FAILED( hr = g_pMusicSegment->Download( g_p3DAudioPath ) ) )
- return DXTRACE_ERR( TEXT("Download"), hr );
-
- // Update the UI controls to show the segment is loaded
- SetDlgItemText( hDlg, IDC_FILENAME, strFileName );
- EnablePlayUI( hDlg, TRUE );
-
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: OnPlayAudio()
- // Desc:
- //-----------------------------------------------------------------------------
- HRESULT OnPlayAudio( HWND hDlg )
- {
- HRESULT hr;
-
- if( g_pMusicSegment == NULL )
- return S_FALSE;
-
- // Set the segment to repeat many times
- if( FAILED( hr = g_pMusicSegment->SetRepeats( DMUS_SEG_REPEAT_INFINITE ) ) )
- return DXTRACE_ERR( TEXT("SetRepeats"), hr );
-
- // Play the segment and wait. The DMUS_SEGF_BEAT indicates to play on the
- // next beat if there is a segment currently playing.
- if( FAILED( hr = g_pMusicSegment->Play( DMUS_SEGF_BEAT, g_p3DAudioPath ) ) )
- return DXTRACE_ERR( TEXT("Play"), hr );
-
- EnablePlayUI( hDlg, FALSE );
-
- return S_OK;
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // Name: EnablePlayUI( hDlg,)
- // Desc: Enables or disables the Play UI controls
- //-----------------------------------------------------------------------------
- VOID EnablePlayUI( HWND hDlg, BOOL bEnable )
- {
- if( bEnable )
- {
- EnableWindow( GetDlgItem( hDlg, IDC_STOP ), FALSE );
-
- EnableWindow( GetDlgItem( hDlg, IDC_PLAY ), TRUE );
- SetFocus( GetDlgItem( hDlg, IDC_PLAY ) );
- }
- else
- {
- EnableWindow( GetDlgItem( hDlg, IDC_STOP ), TRUE );
- SetFocus( GetDlgItem( hDlg, IDC_STOP ) );
- EnableWindow( GetDlgItem( hDlg, IDC_PLAY ), FALSE );
- }
- }
-
-
-
-
- //-----------------------------------------------------------------------------
- // 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: 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] = { 0,0,0,0,0 };
- static LONG s_lX = 0;
- static LONG s_lY = 0;
-
- HWND hWndGrid = GetDlgItem( hDlg, IDC_RENDER_WINDOW );
- HDC hDC = GetDC( hWndGrid );
- RECT rc;
-
- // 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->SetPosition( g_dsBufferParams.vPosition.x,
- g_dsBufferParams.vPosition.y,
- g_dsBufferParams.vPosition.z, DS3D_IMMEDIATE );
-
- g_pDS3DBuffer->SetVelocity( g_dsBufferParams.vVelocity.x,
- g_dsBufferParams.vVelocity.y,
- g_dsBufferParams.vVelocity.z, 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;
- }
-
-
-
-
-
-
-