Function P_SetupLevel

src/p_setup.cpp:412–628

//===========================================================================

void P_SetupLevel(FLevelLocals *Level, int position, bool newGame)
{
	int i;

	Level->ShaderStartTime = I_msTimeFS(); // indicate to the shader system that the level just started

	// This is motivated as follows:

	Level->maptype = MAPTYPE_UNKNOWN;

	if (!savegamerestore)
	{
		Level->SetMusicVolume(Level->MusicVolume);
		for (i = 0; i < MAXPLAYERS; ++i)
		{
			Level->Players[i]->killcount = Level->Players[i]->secretcount
				= Level->Players[i]->itemcount = 0;
		}
	}
	for (i = 0; i < MAXPLAYERS; ++i)
	{
		Level->Players[i]->mo = nullptr;
	}
	GPalette.ClearTranslationSlot(TRANSLATION_LevelScripted);


	// Initial height of PointOfView will be set by player think.
	auto p = Level->GetConsolePlayer();
	if (p) p->viewz = NO_VALUE;

	// Make sure all sounds are stopped before Z_FreeTags.
	S_Start();
	S_ResetMusic();

	// Don't start the music if loading a savegame, because the music is stored there.
	// Don't start the music if revisiting a level in a hub for the same reason.
	if (!primaryLevel->IsReentering())
	{
		primaryLevel->SetMusic();
	}

	// [RH] clear out the mid-screen message
	C_MidPrint(nullptr, nullptr);

	// Free all level data from the previous map
	P_FreeLevelData();

	MapData *map = P_OpenMapData(Level->MapName.GetChars(), true);
	if (map == nullptr)
	{
		I_Error("Unable to open map '%s'\n", Level->MapName.GetChars());
	}

	// [ZZ] init per-map static handlers. we need to call this before everything is set up because otherwise scripts don't receive PlayerEntered event
	//      (which happens at god-knows-what stage in this function, but definitely not the last part, because otherwise it'd work to put E_InitStaticHandlers before the player spawning)
	Level->localEventManager->InitStaticHandlers(Level, true);

	// generate a checksum for the level, to be included and checked with savegames.