Mounting multiple games: Difference between revisions
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Warning:Your mod will run regardless of whether or not the user owns the game that you mount content for. If the game isn't owned the content will not be mounted, and error signs will appear everywhere instead!
Note:The code below is version 2, and has ditched the previous subkey approach. It is not compatible with the
Confirm:filesystem->MountSteamContent returns FILESYSTEM_MOUNT_OK, even if the content is not available. There's nothing you can do about it, apart from poking some guy from Valvesoftware.
TomEdwards (talk | contribs) (LoadFromFile accepts relative paths) |
TomEdwards (talk | contribs) (Mac support makes the client and server code identical) |
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{{note|1=The code below is version 2, and has ditched [http://developer.valvesoftware.com/w/index.php?title=Mounting_multiple_games&oldid=131419 the previous subkey approach]. It is not compatible with the <code>AdditionalContentId { 220,380 }</code> gameinfo.txt scheme.}} | {{note|1=The code below is version 2, and has ditched [http://developer.valvesoftware.com/w/index.php?title=Mounting_multiple_games&oldid=131419 the previous subkey approach]. It is not compatible with the <code>AdditionalContentId { 220,380 }</code> gameinfo.txt scheme.}} | ||
== | == The code == | ||
This code needs to be added to both the client and the server. | |||
; Client | |||
: Search ''cdll_client_init.cpp'' for <code>MountAdditionalContent()</code> and replace it. If it didn't already exist, add the code above <code>CHLClient::Init</code>, then call it from that function right before <code>if ( CommandLine()->FindParm( "-textmode" ) )</code>. | |||
; Server | |||
: Search ''gameinterface.cpp'' for <code>MountAdditionalContent()</code> and replace it. If it didn't already exist, add the code above <code>CServerGameDLL::DLLInit</code> and call before the <code>gpGlobals = pGlobals;</code> line in that func. | |||
<source lang="cpp"> | <source lang="cpp"> | ||
| Line 19: | Line 22: | ||
{ | { | ||
KeyValues *pMainFile = new KeyValues( "gameinfo.txt" ); | KeyValues *pMainFile = new KeyValues( "gameinfo.txt" ); | ||
#ifndef _WINDOWS | |||
// case sensitivity | |||
# | |||
// | |||
pMainFile->LoadFromFile( filesystem, "GameInfo.txt", "MOD" ); | pMainFile->LoadFromFile( filesystem, "GameInfo.txt", "MOD" ); | ||
if (!pMainFile) | if (!pMainFile) | ||
Revision as of 04:22, 7 November 2010
This code extends the Orange Box's AdditionalContentId system to support mounting of multiple Game Cache Files via the gameinfo.txt. It can be used with the Ep1 codebase too.
Warning:Your mod will run regardless of whether or not the user owns the game that you mount content for. If the game isn't owned the content will not be mounted, and error signs will appear everywhere instead!If the content you want to mount is required in order to play your mod properly, you may want to hard-code the ID instead of relying it to be in the gameinfo.txt. Remember when doing this that the int you pass to filesystem->MountSteamContent() must be negative!
Note:The code below is version 2, and has ditched the previous subkey approach. It is not compatible with the AdditionalContentId { 220,380 } gameinfo.txt scheme.The code
This code needs to be added to both the client and the server.
- Client
- Search cdll_client_init.cpp for
MountAdditionalContent()and replace it. If it didn't already exist, add the code aboveCHLClient::Init, then call it from that function right beforeif ( CommandLine()->FindParm( "-textmode" ) ). - Server
- Search gameinterface.cpp for
MountAdditionalContent()and replace it. If it didn't already exist, add the code aboveCServerGameDLL::DLLInitand call before thegpGlobals = pGlobals;line in that func.
static void MountAdditionalContent()
{
KeyValues *pMainFile = new KeyValues( "gameinfo.txt" );
#ifndef _WINDOWS
// case sensitivity
pMainFile->LoadFromFile( filesystem, "GameInfo.txt", "MOD" );
if (!pMainFile)
#endif
pMainFile->LoadFromFile( filesystem, "gameinfo.txt", "MOD" );
if (pMainFile)
{
KeyValues* pFileSystemInfo = pMainFile->FindKey( "FileSystem" );
if (pFileSystemInfo)
for ( KeyValues *pKey = pFileSystemInfo->GetFirstSubKey(); pKey; pKey = pKey->GetNextKey() )
{
if ( strcmp(pKey->GetName(),"AdditionalContentId") == 0 )
{
int appid = abs(pKey->GetInt());
if (appid)
if( filesystem->MountSteamContent(-appid) != FILESYSTEM_MOUNT_OK )
Warning("Unable to mount extra content with appId: %i\n", appid);
}
}
}
pMainFile->deleteThis();
}
Implementing in gameinfo.txt
Now you can mount content by adding something like this after the ToolsAppId:
AdditionalContentId 220 //HL2 AdditionalContentId 240 //CS Source AdditionalContentId 280 //HL Source AdditionalContentId 320 //HL2 Deatmatch AdditionalContentId 340 //HL2 Lost Coast AdditionalContentId 360 //HL Deathmatch: Source AdditionalContentId 380 //Ep1 AdditionalContentId 400 //Portal AdditionalContentId 420 //Ep2 AdditionalContentId 440 //TF2 AdditionalContentId 500 // L4D - has content incompatibilities! AdditionalContentId 550 // L4D2 - as above!
Don't forget to add the relevant SearchPaths too.
Bugs
Really big numbers will crash the game with an Error-Dialog by Valve. You could check if the value is within a certain range to stop this from happening, but I think the user will get by himself that this value cannot be mounted.
Confirm:filesystem->MountSteamContent returns FILESYSTEM_MOUNT_OK, even if the content is not available. There's nothing you can do about it, apart from poking some guy from Valvesoftware.