MM:S API Differences

Metamod:Source 1.6.0 makes several API changes which may affect plugins. These changes are fully documented below.

Renamed Calls

Transparent

The following functions have received simple renamings, which should be transparent from the META_REGCMD and META_REGCVAR macros.

• RegisterConCmdBase() -> RegisterConCommandBase()
• UnregisterConCmdBase() -> UnregisterConCommandBase()

Breaking

The following functions have received simple renamings, however, old code will be affected.

• pGlobals() -> GetCClobals
• engineFactory() -> GetEngineFactory()
• serverFactory() -> GetServerFactory()
• physicsFactory() -> GetPhysicsFactory()
• fileSystemFactory() -> GetFileSystemFactory()

For example, GET_V_IFACE_CURRENT would change from this:

GET_V_IFACE_CURRENT(engineFactory, engine, IVEngineServer, INTERFACEVERSION_VENGINESERVER);

To this:

GET_V_IFACE_CURRENT(GetEngineFactory, engine, IVEngineServer, INTERFACEVERSION_VENGINESERVER);

Removed Calls

A few API calls have been completely removed.

• RemotePrintingAvailable() - Unused, no purpose.
• GetCvarBaseAccessor() - Unused, no purpose.
• SetLastMetaReturn() - Did nothing.
• GetLastMetaReturn() - Did nothing.

Changed Calls

• IPluginManager::Query() and IPluginManager::QueryHandle() now store return values using optional pointers instead of references. This change was requested by a few people.

Miscellaneous

PLAPI_VERSION has been renamed to METAMOD_PLAPI_VERSION. The version numbers for 1.1 to 1.4 can be described as:

• API Major: 1
• API Minor: 0, 1, 2, 3, 4, 5, or 6
• Plugin API: 7, 8, 9, 10, 11, or 12
• Plugin API Minimum: 7
• SourceHook Interface: 4
• SourceHook Implementation: 3 or 4
• SourceHook Version: 4.3 or 4.4

Version 1.6.0 has the following version numbers:

• API Major: 2
• API Minor: 0
• Plugin API: 14
• Plugin API Minimum: 14
• SourceHook Interface: 5
• SourceHook Implementation: 5
• SourceHook Version: 5.0

Major versions change only when the API is compatibly broken. Minor versions are incremented on non-breaking API changes. SourceHook's interface version is a major version, and its implementation version is a minor version. However, SourceHook's minor version is not reset to 0 on major increments.

Additionally, all Metamod:Source public headers are now in a namespace called SourceMM. This namespace is integrated by default. To disable this auto-integration, define METAMOD_NO_AUTO_NAMESPACE at compile time.

Additions

• IMetamodListener now has a new OnUnlinkConCommandBase callback.
• ISmmAPI::Format and ISmmAPI::FormatArgs are new platform-safe replacements for snprintf and vsnprintf.
• ISmmAPI::GetSourceEngineBuild() returns a constant describing the Source engine version.
• ISmmAPI::GetVSPInfo() returns information about Valve Server Plugin interface, if enabled through Metamod:Source.

SourceHook has many new changes, the greatest of which is "global hooks," which can hook a function on any number of instances of that derived class. See SourceHook Development for more information.

Metamod:Source 1.6.0 provides an alternative method of implementing a plugin's loading and instantiation process. This method allows authors to implement very simple loader interfaces which can pass different plugin implementations based on the current Metamod:Source version.

This interface is exposed in ISmmPluginExt.h, and to avoid linkage to any unnecessary externals, does not include any other Metamod:Source headers. It is assumed that developers will know how to interpret the header file's specifications.

Since earlier versions do not expose any such callback, it can be assumed that if the callback is called before CreateInterface is called, then the plugin is being loaded by a version of Metamod:Source less than 1.6.0.