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hammer/ScenePreviewDlg.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================
+
+#include "stdafx.h"
+#include "hammer.h"
+#include "ScenePreviewDlg.h"
+#include "choreoscene.h"
+#include "soundsystem.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include <tier0/memdbgon.h>
+
+
+#define WM_SCENEPREVIEW_IDLE	(WM_USER+1)
+
+
+BEGIN_MESSAGE_MAP(CScenePreviewDlg, CDialog)
+	//{{AFX_MSG_MAP(CScenePreviewDlg)
+	ON_BN_CLICKED(IDCANCEL, OnCancel)
+	//}}AFX_MSG_MAP
+END_MESSAGE_MAP()
+
+
+CScenePreviewDlg::CScenePreviewDlg( CChoreoScene *pScene, const char *pFilename, CWnd* pParent /*=NULL*/ )
+	: CDialog(CScenePreviewDlg::IDD, pParent)
+{
+	//{{AFX_DATA_INIT(CScenePreviewDlg)
+	m_pScene = pScene;
+	m_iLastEventPlayed = -2; // Don't do anything yet.
+	m_hExitThreadEvent = NULL;
+	m_hIdleEventHandledEvent = NULL;
+	m_hIdleThread = NULL;
+	V_strncpy( m_SceneFilename, pFilename, sizeof( m_SceneFilename ) );
+}
+
+
+CScenePreviewDlg::~CScenePreviewDlg()
+{
+	EndThread();
+	delete m_pScene;
+}
+
+
+void CScenePreviewDlg::EndThread()
+{
+	if ( m_hIdleThread )
+	{
+		SetEvent( m_hExitThreadEvent );
+		WaitForSingleObject( m_hIdleThread, INFINITE );
+		CloseHandle( m_hIdleThread );
+		CloseHandle( m_hExitThreadEvent );
+		CloseHandle( m_hIdleEventHandledEvent );
+		m_hIdleThread = m_hExitThreadEvent = m_hIdleEventHandledEvent = NULL;
+	}
+}
+
+
+BOOL CScenePreviewDlg::OnInitDialog()
+{
+	CDialog::OnInitDialog();
+
+	// Setup the control showing the scene name.
+	CString str;
+	GetDlgItemText( IDC_SCENE_NAME, str );
+	str = str + " " + m_SceneFilename;
+	SetDlgItemText( IDC_SCENE_NAME, str );
+
+	CString strNone;
+	strNone.LoadString( IDS_NONE );
+	SetDlgItemText( IDC_CURRENT_SOUND, strNone );
+	SetDlgItemText( IDC_NEXT_SOUND, strNone );
+
+	m_iLastEventPlayed = -1;
+	m_flStartTime = Plat_FloatTime();
+	
+	// Start on the first event..
+	for ( int i = 0; i < m_pScene->GetNumEvents(); i++ )
+	{
+		CChoreoEvent *e = m_pScene->GetEvent( i );
+		if ( e && e->GetType() == CChoreoEvent::SPEAK )
+		{
+			m_flStartTime -= e->GetStartTime();
+			break;
+		}
+	}
+	
+	// Create our idle thread.
+	m_hExitThreadEvent = CreateEvent( NULL, FALSE, FALSE, NULL );
+	m_hIdleEventHandledEvent = CreateEvent( NULL, FALSE, FALSE, NULL );
+	m_hIdleThread = CreateThread( NULL, 0, &CScenePreviewDlg::StaticIdleThread, this, 0, NULL );
+	
+	return TRUE;
+}
+
+
+DWORD CScenePreviewDlg::StaticIdleThread( LPVOID pParameter )
+{
+	return ((CScenePreviewDlg*)pParameter)->IdleThread();
+}
+
+DWORD CScenePreviewDlg::IdleThread()
+{
+	HANDLE handles[2] = {m_hExitThreadEvent, m_hIdleEventHandledEvent};
+	
+	while ( 1 )
+	{
+		// Send the event to the window.
+		PostMessage( WM_SCENEPREVIEW_IDLE, 0, 0 );
+		
+		DWORD ret = WaitForMultipleObjects( ARRAYSIZE( handles ), handles, false, INFINITE );
+		if ( ret == WAIT_OBJECT_0 || ret == WAIT_TIMEOUT )
+			return 0;
+
+		Sleep( 100 );	// Only handle idle 10x/sec.
+	}
+}
+
+
+void CScenePreviewDlg::OnIdle()
+{
+	double flElapsed = Plat_FloatTime() - m_flStartTime;
+	
+	// Find the next sound to play.
+	int iLastSound = -1;
+	for ( int i = 0; i < m_pScene->GetNumEvents(); i++ )
+	{
+		CChoreoEvent *e = m_pScene->GetEvent( i );
+		if ( !e || e->GetType() != CChoreoEvent::SPEAK )
+			continue;
+		
+		if ( flElapsed > e->GetStartTime() )
+			iLastSound = i;
+	}
+
+	// Is there another sound to play in here?
+	if ( iLastSound >= 0 && iLastSound != m_iLastEventPlayed )
+	{
+		m_iLastEventPlayed = iLastSound;
+
+		// Play the current sound.
+		CChoreoEvent *pChoreoEvent = m_pScene->GetEvent( iLastSound );
+		const char *pSoundName = pChoreoEvent->GetParameters();
+		
+		SoundType_t soundType;
+		int nIndex;
+		if ( g_Sounds.FindSoundByName( pSoundName, &soundType, &nIndex ) )
+		{
+			bool bRet = g_Sounds.Play( soundType, nIndex );
+			
+			CString curSound = pSoundName;
+			if ( !bRet )
+			{
+				CString strErrorPlaying;
+				strErrorPlaying.LoadString( IDS_ERROR_PLAYING );
+				curSound += " " + strErrorPlaying;
+			}
+			SetDlgItemText( IDC_CURRENT_SOUND, curSound );
+		}
+
+		// Find the next sound event.
+		CString str;
+		str.LoadString( IDS_NONE );
+		for ( int i=iLastSound+1; i < m_pScene->GetNumEvents(); i++ )
+		{
+			CChoreoEvent *e = m_pScene->GetEvent( i );
+			if ( e && e->GetType() == CChoreoEvent::SPEAK )
+			{
+				str = e->GetParameters();
+				break;
+			}
+		}
+		SetDlgItemText( IDC_NEXT_SOUND, str );
+	}
+}
+
+
+LRESULT CScenePreviewDlg::DefWindowProc( UINT message, WPARAM wParam, LPARAM lParam )
+{
+	// We handle the enter key specifically because the default combo box behavior is to
+	// reset the text and all this stuff we don't want.
+	if ( message == WM_SCENEPREVIEW_IDLE )
+	{
+		OnIdle();
+		SetEvent( m_hIdleEventHandledEvent );
+		return 0;
+	}
+	
+	return CDialog::DefWindowProc( message, wParam, lParam );
+}
+
+
+void CScenePreviewDlg::OnCancel(void)
+{
+	g_Sounds.StopSound();
+	EndThread();
+	EndDialog( 0 );
+}