Half-Life C++, detect Christmas

// Half-Life C++ - Server side Christmas detection (cross-platform)
// All the code is on the "enginecallback.h" file
// Add the "#include <ctime>" line above or below it's friend (#include "event_flags.h")
// Add the "IsChristmas" function at the end just before the "#endif"

#include <ctime>

inline bool IsChristmas()
{
    // Get the time now
    time_t tTime = time( 0 );
    struct tm *stTimeNow = localtime( &tTime );

    // [DEBUG] Tell the date
    //ALERT( at_console, "%i-%i-%i\n", (stTimeNow->tm_year + 1900), (stTimeNow->tm_mon + 1), stTimeNow->tm_mday );

    // It's Christmas ?
    if ( ((stTimeNow->tm_mon + 1) == 12) && (stTimeNow->tm_mday == 25) )
        return true;
    else
        return false;
}

// Usage example : Use a special christmas MDL (model) for Barney
// barney.cpp - Precache

PRECACHE_MODEL( IsChristmas() ? "models/barney_christmas.mdl" : "models/barney.mdl" );

// barney.cpp - Spawn

SET_MODEL( ENT( pev ), IsChristmas() ? "models/barney_christmas.mdl" : "models/barney.mdl" );