1

engine/cheatcodes.cpp

@@ -0,0 +1,156 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//===========================================================================//
+
+#include "cheatcodes.h"
+#include "cmd.h"
+#include "KeyValues.h"
+#include "filesystem.h"
+#include "tier2/tier2.h"
+#include "inputsystem/iinputsystem.h"
+#include "host.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+
+//=========================================================
+// Cheat Codes
+//=========================================================
+#define CHEAT_NAME_MAX_LEN		32
+#define CHEAT_CODE_MAX_LEN		10
+#define CHEAT_COMMAND_MAX_LEN	128
+static ButtonCode_t s_pKeyLog[CHEAT_CODE_MAX_LEN];
+static int s_nKeyLogIndex = 0;
+
+
+struct CheatCodeData_t
+{
+	char			szName[ CHEAT_NAME_MAX_LEN ];
+
+	bool			bDevOnly;
+
+	int				iCodeLength;
+	ButtonCode_t	pButtonCodes[ CHEAT_CODE_MAX_LEN ];
+
+	char			szCommand[ CHEAT_COMMAND_MAX_LEN ];
+};
+
+
+static CUtlVector<CheatCodeData_t> s_CheatCodeCommands;
+
+
+void ClearCheatCommands( void )
+{
+	s_CheatCodeCommands.RemoveAll();
+}
+
+void ReadCheatCommandsFromFile( char *pchFileName )
+{
+	KeyValues *pCheatCodeKeys = new KeyValues( "cheat_codes" );
+	pCheatCodeKeys->LoadFromFile( g_pFullFileSystem, pchFileName, NULL );
+
+	KeyValues *pKey = NULL;
+	for ( pKey = pCheatCodeKeys->GetFirstTrueSubKey(); pKey; pKey = pKey->GetNextTrueSubKey() )
+	{
+		int iCheat = s_CheatCodeCommands.AddToTail();
+		CheatCodeData_t *pNewCheatCode = &(s_CheatCodeCommands[ iCheat ]);
+
+		Q_strncpy( pNewCheatCode->szName, pKey->GetName(), CHEAT_NAME_MAX_LEN );	// Get the name
+		pNewCheatCode->bDevOnly = ( pKey->GetInt( "dev", 0 ) != 0 );				// Get developer only flag
+		pNewCheatCode->iCodeLength = 0;												// Start at zero code elements
+		Q_strncpy( pNewCheatCode->szCommand, pKey->GetString( "command", "echo \"Cheat code has no command!\"" ), CHEAT_COMMAND_MAX_LEN );
+
+		KeyValues *pSubKey = NULL;
+		for ( pSubKey = pKey->GetFirstSubKey(); pSubKey; pSubKey = pSubKey->GetNextKey() )
+		{
+			const char *pchType = pSubKey->GetName();
+			if ( Q_strcmp( pchType, "code" ) == 0 )
+			{
+				AssertMsg( ( pNewCheatCode->iCodeLength < CHEAT_NAME_MAX_LEN ), "Cheat code elements exceeded max!" );
+
+				pNewCheatCode->pButtonCodes[ pNewCheatCode->iCodeLength ] = g_pInputSystem->StringToButtonCode( pSubKey->GetString() );
+				++pNewCheatCode->iCodeLength;
+			}
+		}
+
+		if ( pNewCheatCode->iCodeLength < CHEAT_NAME_MAX_LEN )
+		{
+			// If it's activation is a subsequence of another cheat, the longer cheat can't be activated!
+			DevWarning( "Cheat code \"%s\" has less than %i code elements!", pKey->GetName(), CHEAT_NAME_MAX_LEN );
+		}
+	}
+}
+
+//---------------------------------------------------------
+//---------------------------------------------------------
+void ResetKeyLogging()
+{
+	s_nKeyLogIndex = 0;
+}
+
+//---------------------------------------------------------
+//---------------------------------------------------------
+void LogKeyPress( ButtonCode_t code )
+{
+	if ( s_nKeyLogIndex < CHEAT_CODE_MAX_LEN )
+	{
+		// Log isn't full, so add it in the next spot
+		s_pKeyLog[ s_nKeyLogIndex ] = code;
+		++s_nKeyLogIndex;
+		return;
+	}
+
+	// Log is full so shift all data to the previous bucket
+	int i;
+	for ( i = 0; i < CHEAT_CODE_MAX_LEN - 1; ++i )
+	{
+		s_pKeyLog[ i ] = s_pKeyLog[ i + 1 ];
+	}
+
+	// Log into the last bucket
+	s_pKeyLog[ i ] = code;
+}
+
+//---------------------------------------------------------
+//---------------------------------------------------------
+void CheckCheatCodes()
+{
+	// Loop through all cheat codes
+	int iNumCheatCodes = s_CheatCodeCommands.Count();
+	for ( int iCheatCode = 0; iCheatCode < iNumCheatCodes; ++iCheatCode )
+	{
+		CheatCodeData_t *pCheatCode = &(s_CheatCodeCommands[ iCheatCode ]);
+
+		if ( pCheatCode->bDevOnly && !developer.GetBool() )
+			continue;	// This cheat is only allowed in developer mode
+
+		int iLogIndex = s_nKeyLogIndex - pCheatCode->iCodeLength;	// Check code against the back chunk of the log
+
+		if ( iLogIndex < 0 )
+			continue;	// There's less codes in the log than we need
+
+		int iCode = 0;
+
+		while ( iCode < pCheatCode->iCodeLength && pCheatCode->pButtonCodes[ iCode ] == s_pKeyLog[ iLogIndex ] )
+		{
+			++iCode;
+			++iLogIndex;
+		}
+		
+		if ( iCode == pCheatCode->iCodeLength )
+		{
+			// Every part of the code was correct
+			DevMsg( "Cheat code \"%s\" activated!", pCheatCode->szName );
+
+			Cbuf_AddText( "sv_cheats 1\n" );
+			Cbuf_AddText( pCheatCode->szCommand );
+			Cbuf_AddText( "\n" );
+
+			ResetKeyLogging();
+			return;
+		}
+	}
+}