source-engine/hammer/HammerScene.cpp

//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: 
//
//=============================================================================

#include "stdafx.h"
#include "scriplib.h"
#include "choreoscene.h"
#include "iscenetokenprocessor.h"
#include "filesystem_tools.h"


//-----------------------------------------------------------------------------
// Purpose: Helper to scene module for parsing the .vcd file
//-----------------------------------------------------------------------------
class CSceneTokenProcessor : public ISceneTokenProcessor
{
public:
	const char	*CurrentToken( void );
	bool		GetToken( bool crossline );
	bool		TokenAvailable( void );
	void		Error( const char *fmt, ... );
};

//-----------------------------------------------------------------------------
// Purpose: 
// Output : const
//-----------------------------------------------------------------------------
const char	*CSceneTokenProcessor::CurrentToken( void )
{
	return token;
}

//-----------------------------------------------------------------------------
// Purpose: 
// Input  : crossline - 
// Output : Returns true on success, false on failure.
//-----------------------------------------------------------------------------
bool CSceneTokenProcessor::GetToken( bool crossline )
{
	return ::GetToken( crossline ) ? true : false;
}

//-----------------------------------------------------------------------------
// Purpose: 
// Output : Returns true on success, false on failure.
//-----------------------------------------------------------------------------
bool CSceneTokenProcessor::TokenAvailable( void )
{
	return ::TokenAvailable() ? true : false;
}

//-----------------------------------------------------------------------------
// Purpose: 
// Input  : *fmt - 
//			... - 
//-----------------------------------------------------------------------------
void CSceneTokenProcessor::Error( const char *fmt, ... )
{
	char string[ 2048 ];
	va_list argptr;
	va_start( argptr, fmt );
	vsprintf( string, fmt, argptr );
	va_end( argptr );

	Warning( "%s", string );
}

static CSceneTokenProcessor g_TokenProcessor;


//-----------------------------------------------------------------------------
// Purpose: Normally implemented in cmdlib.cpp but we don't want that in Hammer.
//-----------------------------------------------------------------------------
char *ExpandPath (char *path)
{
	static char fullpath[ 512 ];
	g_pFullFileSystem->RelativePathToFullPath( path, "GAME", fullpath, sizeof( fullpath ) );
	return fullpath;
}


//-----------------------------------------------------------------------------
// This is here because scriplib.cpp is included in this project but cmdlib.cpp
// is not, but scriplib.cpp uses some stuff from cmdlib.cpp, same with
// LoadFile and ExpandPath above.  The only thing that currently uses this
// is $include in scriptlib, if this function returns 0, $include will
// behave the way it did before this change
//-----------------------------------------------------------------------------
int CmdLib_ExpandWithBasePaths( CUtlVector< CUtlString > &expandedPathList, const char *pszPath )
{
	return 0;
}


//-----------------------------------------------------------------------------
// Purpose: Normally implemented in cmdlib.cpp but we don't want that in Hammer.
//-----------------------------------------------------------------------------
int LoadFile( const char *filename, void **bufferptr )
{
	FileHandle_t f = g_pFullFileSystem->Open( filename, "rb" );
	if ( FILESYSTEM_INVALID_HANDLE != f )
	{
		int length = g_pFullFileSystem->Size( f );
		void *buffer = malloc (length+1);
		((char *)buffer)[length] = 0;
		g_pFullFileSystem->Read( buffer, length, f );
		g_pFullFileSystem->Close (f);
		*bufferptr = buffer;
		return length;
	}
	else
	{
		*bufferptr = NULL;
		return 0;
	}
}


CChoreoScene* HammerLoadScene( const char *pFilename )
{
	if ( g_pFullFileSystem->FileExists( pFilename ) )
	{
		LoadScriptFile( (char*)pFilename );
		CChoreoScene *scene = ChoreoLoadScene( pFilename, NULL, &g_TokenProcessor, Msg );
		return scene;
	}

	return NULL;
}


bool GetFirstSoundInScene( const char *pSceneFilename, char *pSoundName, int soundNameLen )
{
	CChoreoScene *pScene = HammerLoadScene( pSceneFilename );
	if ( !pScene )
		return false;
	
	for ( int i = 0; i < pScene->GetNumEvents(); i++ )
	{
		CChoreoEvent *e = pScene->GetEvent( i );
		if ( !e || e->GetType() != CChoreoEvent::SPEAK )
			continue;

		const char *pParameters = e->GetParameters();
		V_strncpy( pSoundName, pParameters, soundNameLen );
		delete pScene;
		return true;
	}
	
	delete pScene;
	return false;	
}