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game/shared/tf2/techtree_parse.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Shared code that parse the Technology Tree on the client & server.
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "utlvector.h"
+#include "tf_shareddefs.h"
+#include "techtree.h"
+#include <KeyValues.h>
+#include "filesystem.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+//-----------------------------------------------------------------------------
+// Purpose: Parse a class result chunk inside a technology keyvalue
+//-----------------------------------------------------------------------------
+void ParseClassResult( CBaseTechnology *pTechnology, KeyValues *pkvResult, int iClass )
+{
+	if ( !pkvResult )
+		return;
+
+	// All is a special case, used by general technologies
+	if ( iClass == TFCLASS_CLASS_COUNT )
+	{
+		for (int i = TFCLASS_RECON; i < TFCLASS_CLASS_COUNT; i++)
+		{
+			pTechnology->SetClassResultSound( i, pkvResult->GetString( "sound", NULL ) );
+			pTechnology->SetClassResultDescription( i, pkvResult->GetString( "description", NULL ) );
+			pTechnology->SetClassResultAssociateWeapons( i, pkvResult->GetInt( "associateweapons", 0 ) ? true : false );
+		}
+	}
+	else
+	{
+		pTechnology->SetClassResultSound( iClass, pkvResult->GetString( "sound", NULL ) );
+		pTechnology->SetClassResultDescription( iClass, pkvResult->GetString( "description", NULL ) );
+		pTechnology->SetClassResultAssociateWeapons( iClass, pkvResult->GetInt( "associateweapons", 0 ) ? true : false );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Parse a technology from a keyvalues chunk in the data file
+//-----------------------------------------------------------------------------
+void ParseTechnology( CBaseTechnology *pTechnology, KeyValues *pkvTech )
+{
+	// Get the general data
+	pTechnology->SetName( pkvTech->GetName() );
+	pTechnology->SetPrintName( pkvTech->GetString( "printname", "" ) );
+	// Use the print name if no button name specified
+	pTechnology->SetButtonName( pkvTech->GetString( "buttonname", pTechnology->GetPrintName() ) );
+	pTechnology->SetDescription( pkvTech->GetString( "description", "" ) );
+	pTechnology->SetTextureName( pkvTech->GetString( "texture", "" ) );
+	pTechnology->SetLevel( pkvTech->GetInt( "level", 0 ) );
+	pTechnology->SetGoalTechnology( pkvTech->GetInt( "goal", 0 ) > 0 );
+	pTechnology->SetHidden( pkvTech->GetInt( "hidden", 0 ) != 0 );
+
+	// Retrieve weapon associations
+	KeyValues *pkvWeaponAssociations = pkvTech->FindKey( "associated_weapons" );
+	if ( pkvWeaponAssociations )
+	{
+		KeyValues *pkvWA = pkvWeaponAssociations->GetFirstSubKey();
+		while ( pkvWA )
+		{
+			const char *weaponname = pkvWA->GetString();
+			if ( weaponname && weaponname[ 0 ] )
+			{
+				pTechnology->AddAssociatedWeapon( weaponname );
+			}
+
+			pkvWA = pkvWA->GetNextKey();
+		}
+	}
+
+	// Get the cost
+	pTechnology->SetCost( pkvTech->GetFloat( "resourcecost", 0.0 ) );
+
+	// Get the class results
+	KeyValues *pkvClassResults = pkvTech->FindKey( "class_results" );
+	if ( pkvClassResults )
+	{
+		// Try and get each class result
+		for ( int iClass=0; iClass < TFCLASS_CLASS_COUNT; iClass++ )
+		{
+			ParseClassResult( pTechnology, pkvClassResults->FindKey( GetTFClassInfo( iClass )->m_pClassName ), iClass );
+		}
+		
+		ParseClassResult( pTechnology, pkvClassResults->FindKey( "all" ), TFCLASS_CLASS_COUNT );
+	}
+
+	// Get any technologies contained within this one
+	KeyValues *pkvTechnologies = pkvTech->FindKey( "technologies" );
+	if ( pkvTechnologies )
+	{
+		KeyValues *pkvTechnology = pkvTechnologies->GetFirstSubKey();
+		int iContainedTechs = 0;
+		while ( pkvTechnology )
+		{
+			if ( iContainedTechs >= MAX_CONTAINED_TECHNOLOGIES )
+				break;
+
+			pTechnology->AddContainedTechnology( pkvTechnology->GetString() ); 
+
+			iContainedTechs++;
+			pkvTechnology = pkvTechnology->GetNextKey();
+		}
+	}
+
+	// Get any dependencies for this tech
+	KeyValues *pkvDependencies = pkvTech->FindKey( "dependencies" );
+	if ( pkvDependencies )
+	{
+		KeyValues *pkvTechnology = pkvDependencies->GetFirstSubKey();
+		int iDependentTechs = 0;
+		while ( pkvTechnology )
+		{
+			if ( iDependentTechs >= MAX_DEPENDANT_TECHNOLOGIES )
+				break;
+
+			pTechnology->AddDependentTechnology( pkvTechnology->GetString() ); 
+
+			iDependentTechs++;
+			pkvTechnology = pkvTechnology->GetNextKey();
+		}
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Parse the technology tree file and dump the data into the utlvector list
+//-----------------------------------------------------------------------------
+bool ParseTechnologyFile( CUtlVector< CBaseTechnology * > &pTechnologyList, IFileSystem* filesystem, int nTeamNumber, char *sFileName )
+{
+	// Open the technology tree datafile
+	KeyValues *pkvTechTreeFile = new KeyValues( "TechTreeDataFile" );
+	if ( pkvTechTreeFile->LoadFromFile( filesystem, sFileName, "GAME" ) == false )
+		return false;
+	
+	// Parse the list of techs
+	KeyValues *pkvTech = pkvTechTreeFile->GetFirstSubKey();
+	while ( pkvTech )
+	{
+		// Reached the maximum number of techs allowed?
+		if ( pTechnologyList.Size() >= MAX_TECHNOLOGIES )
+		{
+			pkvTechTreeFile->deleteThis();
+			return false;
+		}
+
+		// Create the technology
+		CBaseTechnology *pTechnology = NULL;
+		int nTeamTech = pkvTech->GetInt( "team", 0 );
+		if ((nTeamTech == 0) || (nTeamTech == nTeamNumber))
+		{
+			pTechnology = new CBaseTechnology();
+			ParseTechnology( pTechnology, pkvTech );
+
+			// Find out if it's already in the list
+			for ( int i = 0; i < pTechnologyList.Size(); i++ )
+			{
+				if ( !strcmp(pTechnologyList[i]->GetName(), pTechnology->GetName() ) )
+				{
+					// Found it in the tree already, so delete and continue
+					delete pTechnology;
+					pTechnology = NULL;
+					break;
+				}
+			}
+		}
+
+		// If we haven't deleted it, add it to the list
+		if ( pTechnology )
+		{
+			pTechnologyList.AddToTail( pTechnology );
+		}
+
+		pkvTech = pkvTech->GetNextKey();
+	}
+
+	pkvTechTreeFile->deleteThis();
+	return true;
+}
+