C++ FWadLump::Read方法代码示例

FFont * V_GetFont(const char *name)
{
	FFont *font = FFont::FindFont (name);
	if (font == NULL)
	{
		int lump = Wads.CheckNumForName (name);
		if (lump != -1)
		{
			char head[3];
			{
				FWadLump lumpy = Wads.OpenLumpNum (lump);
				lumpy.Read (head, 3);
			}
			if (head[0] == 'F' && head[1] == 'O' && head[2] == 'N')
			{
				font = new FSingleLumpFont (name, lump);
			}
		}
		if (font == NULL)
		{
			int picnum = TexMan.CheckForTexture (name, FTexture::TEX_Any);
			if (picnum <= 0)
			{
				picnum = TexMan.AddPatch (name);
			}
			if (picnum > 0)
			{
				font = new FSingleLumpFont (name, -1);
			}
		}
	}
	return font;
}

bool LumpRemapper::LoadMap()
{
	if(loaded)
		return true;
	if(Wads.GetNumLumps() == 0)
		return false;

	int lump = Wads.GetNumForName(mapLumpName);
	if(lump == -1)
	{
		printf("\n");
		return false;
	}
	FWadLump mapLump = Wads.OpenLumpNum(lump);

	char* mapData = new char[Wads.LumpLength(lump)];
	mapLump.Read(mapData, Wads.LumpLength(lump));
	Scanner sc(mapData, Wads.LumpLength(lump));
	sc.SetScriptIdentifier(Wads.GetLumpFullName(lump));
	delete[] mapData;

	ParseMap(sc);

	loaded = true;
	return true;
}

void R_SetDefaultColormap (const char *name)
{
	if (strnicmp (fakecmaps[0].name, name, 8) != 0)
	{
		int lump, i, j;
		BYTE map[256];
		BYTE unremap[256];
		BYTE remap[256];

		lump = Wads.CheckNumForName (name, ns_colormaps);
		if (lump == -1)
			lump = Wads.CheckNumForName (name, ns_global);

		// [RH] If using BUILD's palette, generate the colormap
		if (lump == -1 || Wads.CheckNumForFullName("palette.dat") >= 0 || Wads.CheckNumForFullName("blood.pal") >= 0)
		{
			Printf ("Make colormap\n");
			FDynamicColormap foo;

			foo.Color = 0xFFFFFF;
			foo.Fade = 0;
			foo.Maps = realcolormaps;
			foo.Desaturate = 0;
			foo.Next = NULL;
			foo.BuildLights ();
		}
		else
		{
			FWadLump lumpr = Wads.OpenLumpNum (lump);

			// [RH] The colormap may not have been designed for the specific
			// palette we are using, so remap it to match the current palette.
			memcpy (remap, GPalette.Remap, 256);
			memset (unremap, 0, 256);
			for (i = 0; i < 256; ++i)
			{
				unremap[remap[i]] = i;
			}
			// Mapping to color 0 is okay, because the colormap won't be used to
			// produce a masked texture.
			remap[0] = 0;
			for (i = 0; i < NUMCOLORMAPS; ++i)
			{
				BYTE *map2 = &realcolormaps[i*256];
				lumpr.Read (map, 256);
				for (j = 0; j < 256; ++j)
				{
					map2[j] = remap[map[unremap[j]]];
				}
			}
		}

		uppercopy (fakecmaps[0].name, name);
		fakecmaps[0].blend = 0;
	}
}

void FFlatTexture::MakeTexture ()
{
	FWadLump lump = Wads.OpenLumpNum (SourceLump);
	Pixels = new BYTE[Width*Height];
	long numread = lump.Read (Pixels, Width*Height);
	if (numread < Width*Height)
	{
		memset (Pixels + numread, 0xBB, Width*Height - numread);
	}
	FlipSquareBlockRemap (Pixels, Width, Height, GPalette.Remap);
}

void FWadCollection::ReadLump (int lump, void *dest)
{
	FWadLump lumpr = OpenLumpNum (lump);
	long size = lumpr.GetLength ();
	long numread = lumpr.Read (dest, size);

	if (numread != size)
	{
		I_Error ("W_ReadLump: only read %ld of %ld on lump %i\n",
			numread, size, lump);	
	}
}

void
SD_ContinueMusic(const char* chunk, int startoffs)
{
    SD_MusicOff();

    if (MusicMode == smm_AdLib)
    {
        {   // We need this scope to "delete" the lump before modifying the sqHack pointers.
            int lumpNum = Wads.CheckNumForName(chunk, ns_music);
            if(lumpNum == -1)
                return;

            SDL_LockMutex(audioMutex);
            FWadLump lump = Wads.OpenLumpNum(lumpNum);
            if(sqHackFreeable != NULL)
                delete[] sqHackFreeable;
            sqHack = new word[(Wads.LumpLength(lumpNum)/2)+1]; //+1 is just safety
            sqHackFreeable = sqHack;
            lump.Read(sqHack, Wads.LumpLength(lumpNum));
            if(*sqHack == 0) sqHackLen = sqHackSeqLen = Wads.LumpLength(lumpNum);
            else sqHackLen = sqHackSeqLen = LittleShort(*sqHack++);
            sqHackPtr = sqHack;
        }

        if(startoffs >= sqHackLen)
        {
            SDL_UnlockMutex(audioMutex);
            Quit("SD_StartMusic: Illegal startoffs provided!");
        }

        // fast forward to correct position
        // (needed to reconstruct the instruments)

        for(int i = 0; i < startoffs; i += 2)
        {
            byte reg = *(byte *)sqHackPtr;
            byte val = *(((byte *)sqHackPtr) + 1);
            if(reg >= 0xb1 && reg <= 0xb8) val &= 0xdf;           // disable play note flag
            else if(reg == 0xbd) val &= 0xe0;                     // disable drum flags

            alOut(reg,val);
            sqHackPtr += 2;
            sqHackLen -= 4;
        }
        sqHackTime = 0;
        alTimeCount = 0;

        SDL_UnlockMutex(audioMutex);

        SD_MusicOn();
    }
}

void FTGATexture::MakeTexture ()
{
	BYTE PaletteMap[256];
	FWadLump lump = Wads.OpenLumpNum (SourceLump);
	TGAHeader hdr;
	WORD w;
	BYTE r,g,b,a;
	BYTE * buffer;

	Pixels = new BYTE[Width*Height];
	lump.Read(&hdr, sizeof(hdr));
	lump.Seek(hdr.id_len, SEEK_CUR);
	
	hdr.width = LittleShort(hdr.width);
	hdr.height = LittleShort(hdr.height);
	hdr.cm_first = LittleShort(hdr.cm_first);
	hdr.cm_length = LittleShort(hdr.cm_length);

	if (hdr.has_cm)
	{
		memset(PaletteMap, 0, 256);
		for (int i = hdr.cm_first; i < hdr.cm_first + hdr.cm_length && i < 256; i++)
		{
			switch (hdr.cm_size)
			{
			case 15:
			case 16:
				lump >> w;
				r = (w & 0x001F) << 3;
				g = (w & 0x03E0) >> 2;
				b = (w & 0x7C00) >> 7;
				a = 255;
				break;
				
			case 24:
				lump >> b >> g >> r;
				a=255;
				break;
				
			case 32:
				lump >> b >> g >> r >> a;
				if ((hdr.img_desc&15)!=8) a=255;
				break;
				
			default:	// should never happen
				r=g=b=a=0;
				break;
			}
			PaletteMap[i] = a>=128? ColorMatcher.Pick(r, g, b) : 0;
		}
    }

FString::FString (ELumpNum lumpnum)
{
	FWadLump lumpr = Wads.OpenLumpNum ((int)lumpnum);
	long size = lumpr.GetLength ();
	AllocBuffer (1 + size);
	long numread = lumpr.Read (&Chars[0], size);
	Chars[size] = '\0';

	if (numread != size)
	{
		I_Error ("ConstructStringFromLump: Only read %ld of %ld bytes on lump %i (%s)\n",
			numread, size, lumpnum, Wads.GetLumpFullName((int)lumpnum));
	}
}

static bool ShowText(const FString exitText, const FString flat, const FString music, ClusterInfo::ExitType type)
{
    // Use cluster background if set.
    if(!flat.IsEmpty())
        backgroundFlat = TexMan(flat);
    if(!backgroundFlat) // Get default if needed
        backgroundFlat = TexMan(gameinfo.FinaleFlat);

    switch(type)
    {
    case ClusterInfo::EXIT_MESSAGE:
        SD_PlaySound ("misc/1up");

        Message (exitText);

        IN_ClearKeysDown ();
        IN_Ack ();
        return false;

    case ClusterInfo::EXIT_LUMP:
    {
        int lumpNum = Wads.CheckNumForName(exitText, ns_global);
        if(lumpNum != -1)
        {
            FWadLump lump = Wads.OpenLumpNum(lumpNum);
            char* text = new char[Wads.LumpLength(lumpNum)];
            lump.Read(text, Wads.LumpLength(lumpNum));

            if(!music.IsEmpty())
                StartCPMusic(music);
            ShowArticle(text, !!(IWad::GetGame().Flags & IWad::HELPHACK));

            delete[] text;
        }

        break;
    }

    default:
        if(!music.IsEmpty())
            StartCPMusic(music);
        ShowArticle(exitText, !!(IWad::GetGame().Flags & IWad::HELPHACK));
        break;
    }

    IN_ClearKeysDown();
    if (MousePresent && IN_IsInputGrabbed())
        IN_CenterMouse();  // Clear accumulated mouse movement
    return true;
}

static void InitBoomColormaps ()
{
	// [RH] Try and convert BOOM colormaps into blending values.
	//		This is a really rough hack, but it's better than
	//		not doing anything with them at all (right?)

	uint32_t NumLumps = Wads.GetNumLumps();

	realcolormaps.Maps = new uint8_t[256*NUMCOLORMAPS*fakecmaps.Size()];
	SetDefaultColormap ("COLORMAP");

	if (fakecmaps.Size() > 1)
	{
		uint8_t unremap[256], remap[256], mapin[256];
		int i;
		unsigned j;

		memcpy (remap, GPalette.Remap, 256);
		memset (unremap, 0, 256);
		for (i = 0; i < 256; ++i)
		{
			unremap[remap[i]] = i;
		}
		remap[0] = 0;
		for (j = 1; j < fakecmaps.Size(); j++)
		{
			if (Wads.LumpLength (fakecmaps[j].lump) >= (NUMCOLORMAPS+1)*256)
			{
				int k, r;
				FWadLump lump = Wads.OpenLumpNum (fakecmaps[j].lump);
				uint8_t *const map = realcolormaps.Maps + NUMCOLORMAPS*256*j;

				for (k = 0; k < NUMCOLORMAPS; ++k)
				{
					uint8_t *map2 = &map[k*256];
					lump.Read (mapin, 256);
					map2[0] = 0;
					for (r = 1; r < 256; ++r)
					{
						map2[r] = remap[mapin[unremap[r]]];
					}
				}
			}
		}
	}
}

///////////////////////////////////////////////////////////////////////////
//
//      SD_StartMusic() - starts playing the music pointed to
//
///////////////////////////////////////////////////////////////////////////
void
SD_StartMusic(const char* chunk)
{
    static const Instrument ChannelRelease = {
        0, 0,
        0x3F, 0x3F,
        0xFF, 0xFF,
        0xF, 0xF,
        0, 0,
        0,

        0, 0, {0, 0, 0}
    };

    SD_MusicOff();

    if (MusicMode == smm_AdLib)
    {
        int lumpNum = Wads.CheckNumForName(chunk, ns_music);
        if(lumpNum == -1)
            return;

        SDL_LockMutex(audioMutex);

        for (int i = 0; i < OPL_CHANNELS; ++i)
            SDL_AlSetChanInst(&ChannelRelease, i);

        FWadLump lump = Wads.OpenLumpNum(lumpNum);
        if(sqHackFreeable != NULL)
            delete[] sqHackFreeable;
        sqHack = new word[(Wads.LumpLength(lumpNum)/2)+1]; //+1 is just safety
        sqHackFreeable = sqHack;
        lump.Read(sqHack, Wads.LumpLength(lumpNum));
        if(*sqHack == 0) sqHackLen = sqHackSeqLen = Wads.LumpLength(lumpNum);
        else sqHackLen = sqHackSeqLen = LittleShort(*sqHack++);
        sqHackPtr = sqHack;
        sqHackTime = 0;
        alTimeCount = 0;

        SDL_UnlockMutex(audioMutex);

        SD_MusicOn();
    }
}

void FTextureManager::AddPatches (int lumpnum)
{
	FWadLump *file = Wads.ReopenLumpNum (lumpnum);
	DWORD numpatches, i;
	char name[9];

	*file >> numpatches;
	name[8] = 0;

	for (i = 0; i < numpatches; ++i)
	{
		file->Read (name, 8);

		if (CheckForTexture (name, FTexture::TEX_WallPatch, 0) == -1)
		{
			CreateTexture (Wads.CheckNumForName (name, ns_patches), FTexture::TEX_WallPatch);
		}
		//StartScreen->Progress();
	}

	delete file;
}

void R_InitColormaps ()
{
	// [RH] Try and convert BOOM colormaps into blending values.
	//		This is a really rough hack, but it's better than
	//		not doing anything with them at all (right?)

	FakeCmap cm;

	R_DeinitColormaps();

	cm.name[0] = 0;
	cm.blend = 0;
	fakecmaps.Push(cm);

	uint32_t NumLumps = Wads.GetNumLumps();

	for (uint32_t i = 0; i < NumLumps; i++)
	{
		if (Wads.GetLumpNamespace(i) == ns_colormaps)
		{
			char name[9];
			name[8] = 0;
			Wads.GetLumpName (name, i);

			if (Wads.CheckNumForName (name, ns_colormaps) == (int)i)
			{
				strncpy(cm.name, name, 8);
				cm.blend = 0;
				cm.lump = i;
				fakecmaps.Push(cm);
			}
		}
	}

	int rr = 0, gg = 0, bb = 0;
	for(int x=0;x<256;x++)
	{
		rr += GPalette.BaseColors[x].r;
		gg += GPalette.BaseColors[x].g;
		bb += GPalette.BaseColors[x].b;
	}
	rr >>= 8;
	gg >>= 8;
	bb >>= 8;

	int palette_brightness = (rr*77 + gg*143 + bb*35) / 255;

	// To calculate the blend it will just average the colors of the first map
	if (fakecmaps.Size() > 1)
	{
		uint8_t map[256];

		for (unsigned j = 1; j < fakecmaps.Size(); j++)
		{
			if (Wads.LumpLength (fakecmaps[j].lump) >= 256)
			{
				int k, r, g, b;
				FWadLump lump = Wads.OpenLumpNum (fakecmaps[j].lump);
				lump.Read(map, 256);
				r = g = b = 0;

				for (k = 0; k < 256; k++)
				{
					r += GPalette.BaseColors[map[k]].r;
					g += GPalette.BaseColors[map[k]].g;
					b += GPalette.BaseColors[map[k]].b;
				}
				r /= 256;
				g /= 256;
				b /= 256;
				// The calculated average is too dark so brighten it according to the palettes's overall brightness
				int maxcol = MAX<int>(MAX<int>(palette_brightness, r), MAX<int>(g, b));
				
				fakecmaps[j].blend = PalEntry (255, r * 255 / maxcol, g * 255 / maxcol, b * 255 / maxcol);
			}
		}
	}

	// build default special maps (e.g. invulnerability)

	for (unsigned i = 0; i < countof(SpecialColormapParms); ++i)
	{
		AddSpecialColormap(SpecialColormapParms[i].Start[0], SpecialColormapParms[i].Start[1],
			SpecialColormapParms[i].Start[2], SpecialColormapParms[i].End[0],
			SpecialColormapParms[i].End[1], SpecialColormapParms[i].End[2]);
	}
	// desaturated colormaps. These are used for texture composition
	for(int m = 0; m < 31; m++)
	{
		uint8_t *shade = DesaturateColormap[m];
		for (int c = 0; c < 256; c++)
		{
			int intensity = (GPalette.BaseColors[c].r * 77 +
						GPalette.BaseColors[c].g * 143 +
						GPalette.BaseColors[c].b * 37) / 256;

			int r = (GPalette.BaseColors[c].r * (31-m) + intensity *m) / 31;
			int g = (GPalette.BaseColors[c].g * (31-m) + intensity *m) / 31;
			int b = (GPalette.BaseColors[c].b * (31-m) + intensity *m) / 31;
			shade[c] = ColorMatcher.Pick(r, g, b);
//.........这里部分代码省略.........

void FFontChar2::MakeTexture ()
{
	FWadLump lump = Wads.OpenLumpNum (SourceLump);
	int destSize = Width * Height;
	BYTE max = 255;

	// This is to "fix" bad fonts
	{
		BYTE buff[8];
		lump.Read (buff, 4);
		if (buff[3] == '2')
		{
			lump.Read (buff, 7);
			max = buff[6];
			lump.Seek (SourcePos - 11, SEEK_CUR);
		}
		else
		{
			lump.Seek (SourcePos - 4, SEEK_CUR);
		}
	}

	Pixels = new BYTE[destSize];

	int runlen = 0, setlen = 0;
	BYTE setval = 0;  // Shut up, GCC!
	BYTE *dest_p = Pixels;
	int dest_adv = Height;
	int dest_rew = destSize - 1;

	for (int y = Height; y != 0; --y)
	{
		for (int x = Width; x != 0; )
		{
			if (runlen != 0)
			{
				BYTE color;

				lump >> color;
				*dest_p = MIN (color, max);
				if (SourceRemap != NULL)
				{
					*dest_p = SourceRemap[*dest_p];
				}
				dest_p += dest_adv;
				x--;
				runlen--;
			}
			else if (setlen != 0)
			{
				*dest_p = setval;
				dest_p += dest_adv;
				x--;
				setlen--;
			}
			else
			{
				SBYTE code;

				lump >> code;
				if (code >= 0)
				{
					runlen = code + 1;
				}
				else if (code != -128)
				{
					BYTE color;

					lump >> color;
					setlen = (-code) + 1;
					setval = MIN (color, max);
					if (SourceRemap != NULL)
					{
						setval = SourceRemap[setval];
					}
				}
			}

void R_InitColormaps ()
{
	// [RH] Try and convert BOOM colormaps into blending values.
	//		This is a really rough hack, but it's better than
	//		not doing anything with them at all (right?)

	FakeCmap cm;

	R_DeinitColormaps();

	cm.name[0] = 0;
	cm.blend = 0;
	fakecmaps.Push(cm);

	DWORD NumLumps = Wads.GetNumLumps();

	for (DWORD i = 0; i < NumLumps; i++)
	{
		if (Wads.GetLumpNamespace(i) == ns_colormaps)
		{
			char name[9];
			name[8] = 0;
			Wads.GetLumpName (name, i);

			if (Wads.CheckNumForName (name, ns_colormaps) == (int)i)
			{
				strncpy(cm.name, name, 8);
				cm.blend = 0;
				cm.lump = i;
				fakecmaps.Push(cm);
			}
		}
	}
	realcolormaps = new BYTE[256*NUMCOLORMAPS*fakecmaps.Size()];
	R_SetDefaultColormap ("COLORMAP");

	if (fakecmaps.Size() > 1)
	{
		BYTE unremap[256], remap[256], mapin[256];
		int i;
		unsigned j;

		memcpy (remap, GPalette.Remap, 256);
		memset (unremap, 0, 256);
		for (i = 0; i < 256; ++i)
		{
			unremap[remap[i]] = i;
		}
		remap[0] = 0;
		for (j = 1; j < fakecmaps.Size(); j++)
		{
			if (Wads.LumpLength (fakecmaps[j].lump) >= (NUMCOLORMAPS+1)*256)
			{
				int k, r, g, b;
				FWadLump lump = Wads.OpenLumpNum (fakecmaps[j].lump);
				BYTE *const map = realcolormaps + NUMCOLORMAPS*256*j;

				for (k = 0; k < NUMCOLORMAPS; ++k)
				{
					BYTE *map2 = &map[k*256];
					lump.Read (mapin, 256);
					map2[0] = 0;
					for (r = 1; r < 256; ++r)
					{
						map2[r] = remap[mapin[unremap[r]]];
					}
				}

				r = g = b = 0;

				for (k = 0; k < 256; k++)
				{
					r += GPalette.BaseColors[map[k]].r;
					g += GPalette.BaseColors[map[k]].g;
					b += GPalette.BaseColors[map[k]].b;
				}
				fakecmaps[j].blend = PalEntry (255, r/256, g/256, b/256);
			}
		}
	}
	NormalLight.Color = PalEntry (255, 255, 255);
	NormalLight.Fade = 0;
	NormalLight.Maps = realcolormaps;
	NormalLightHasFixedLights = R_CheckForFixedLights(realcolormaps);
	numfakecmaps = fakecmaps.Size();

	// build default special maps (e.g. invulnerability)

	for (unsigned i = 0; i < countof(SpecialColormapParms); ++i)
	{
		AddSpecialColormap(SpecialColormapParms[i].Start[0], SpecialColormapParms[i].Start[1],
			SpecialColormapParms[i].Start[2], SpecialColormapParms[i].End[0],
			SpecialColormapParms[i].End[1], SpecialColormapParms[i].End[2]);
	}
	// desaturated colormaps. These are used for texture composition
	for(int m = 0; m < 31; m++)
	{
		BYTE *shade = DesaturateColormap[m];
		for (int c = 0; c < 256; c++)
		{
//.........这里部分代码省略.........