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SRB2/src/r_patch.c
Jaime Passos da1718f93c Avoid possible overflows in the rotsprite arrays.
2019-12-26 21:49:36 -03:00

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// SONIC ROBO BLAST 2
//-----------------------------------------------------------------------------
// Copyright (C) 1993-1996 by id Software, Inc.
// Copyright (C) 2005-2009 by Andrey "entryway" Budko.
// Copyright (C) 2018-2019 by Jaime "Lactozilla" Passos.
// Copyright (C) 2019 by Sonic Team Junior.
//
// This program is free software distributed under the
// terms of the GNU General Public License, version 2.
// See the 'LICENSE' file for more details.
//-----------------------------------------------------------------------------
/// \file r_patch.c
/// \brief Patch generation.
#include "byteptr.h"
#include "dehacked.h"
#include "i_video.h"
#include "r_data.h"
#include "r_draw.h"
#include "r_patch.h"
#include "r_things.h"
#include "z_zone.h"
#include "w_wad.h"
#ifdef HWRENDER
#include "hardware/hw_glob.h"
#endif
#ifdef HAVE_PNG
#ifndef _MSC_VER
#ifndef _LARGEFILE64_SOURCE
#define _LARGEFILE64_SOURCE
#endif
#endif
#ifndef _LFS64_LARGEFILE
#define _LFS64_LARGEFILE
#endif
#ifndef _FILE_OFFSET_BITS
#define _FILE_OFFSET_BITS 0
#endif
#include "png.h"
#ifndef PNG_READ_SUPPORTED
#undef HAVE_PNG
#endif
#endif
static unsigned char imgbuf[1<<26];
//
// R_CheckIfPatch
//
// Returns true if the lump is a valid patch.
//
boolean R_CheckIfPatch(lumpnum_t lump)
{
size_t size;
INT16 width, height;
patch_t *patch;
boolean result;
size = W_LumpLength(lump);
// minimum length of a valid Doom patch
if (size < 13)
return false;
patch = (patch_t *)W_CacheLumpNum(lump, PU_STATIC);
width = SHORT(patch->width);
height = SHORT(patch->height);
result = (height > 0 && height <= 16384 && width > 0 && width <= 16384 && width < (INT16)(size / 4));
if (result)
{
// The dimensions seem like they might be valid for a patch, so
// check the column directory for extra security. All columns
// must begin after the column directory, and none of them must
// point past the end of the patch.
INT16 x;
for (x = 0; x < width; x++)
{
UINT32 ofs = LONG(patch->columnofs[x]);
// Need one byte for an empty column (but there's patches that don't know that!)
if (ofs < (UINT32)width * 4 + 8 || ofs >= (UINT32)size)
{
result = false;
break;
}
}
}
return result;
}
//
// R_TextureToFlat
//
// Convert a texture to a flat.
//
void R_TextureToFlat(size_t tex, UINT8 *flat)
{
texture_t *texture = textures[tex];
fixed_t col, ofs;
column_t *column;
UINT8 *desttop, *dest, *deststop;
UINT8 *source;
// yea
R_CheckTextureCache(tex);
desttop = flat;
deststop = desttop + (texture->width * texture->height);
for (col = 0; col < texture->width; col++, desttop++)
{
// no post_t info
if (!texture->holes)
{
column = (column_t *)(R_GetColumn(tex, col));
source = (UINT8 *)(column);
dest = desttop;
for (ofs = 0; dest < deststop && ofs < texture->height; ofs++)
{
if (source[ofs] != TRANSPARENTPIXEL)
*dest = source[ofs];
dest += texture->width;
}
}
else
{
INT32 topdelta, prevdelta = -1;
column = (column_t *)((UINT8 *)R_GetColumn(tex, col) - 3);
while (column->topdelta != 0xff)
{
topdelta = column->topdelta;
if (topdelta <= prevdelta)
topdelta += prevdelta;
prevdelta = topdelta;
dest = desttop + (topdelta * texture->width);
source = (UINT8 *)column + 3;
for (ofs = 0; dest < deststop && ofs < column->length; ofs++)
{
if (source[ofs] != TRANSPARENTPIXEL)
*dest = source[ofs];
dest += texture->width;
}
column = (column_t *)((UINT8 *)column + column->length + 4);
}
}
}
}
//
// R_PatchToFlat
//
// Convert a patch to a flat.
//
void R_PatchToFlat(patch_t *patch, UINT8 *flat)
{
fixed_t col, ofs;
column_t *column;
UINT8 *desttop, *dest, *deststop;
UINT8 *source;
desttop = flat;
deststop = desttop + (SHORT(patch->width) * SHORT(patch->height));
for (col = 0; col < SHORT(patch->width); col++, desttop++)
{
INT32 topdelta, prevdelta = -1;
column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[col]));
while (column->topdelta != 0xff)
{
topdelta = column->topdelta;
if (topdelta <= prevdelta)
topdelta += prevdelta;
prevdelta = topdelta;
dest = desttop + (topdelta * SHORT(patch->width));
source = (UINT8 *)(column) + 3;
for (ofs = 0; dest < deststop && ofs < column->length; ofs++)
{
*dest = source[ofs];
dest += SHORT(patch->width);
}
column = (column_t *)((UINT8 *)column + column->length + 4);
}
}
}
//
// R_PatchToFlat_16bpp
//
// Convert a patch to a 16-bit flat.
//
void R_PatchToFlat_16bpp(patch_t *patch, UINT16 *raw, boolean flip)
{
fixed_t col, ofs;
column_t *column;
UINT16 *desttop, *dest, *deststop;
UINT8 *source;
desttop = raw;
deststop = desttop + (SHORT(patch->width) * SHORT(patch->height));
for (col = 0; col < SHORT(patch->width); col++, desttop++)
{
INT32 topdelta, prevdelta = -1;
column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[flip ? (patch->width-1-col) : col]));
while (column->topdelta != 0xff)
{
topdelta = column->topdelta;
if (topdelta <= prevdelta)
topdelta += prevdelta;
prevdelta = topdelta;
dest = desttop + (topdelta * SHORT(patch->width));
source = (UINT8 *)(column) + 3;
for (ofs = 0; dest < deststop && ofs < column->length; ofs++)
{
*dest = source[ofs];
dest += SHORT(patch->width);
}
column = (column_t *)((UINT8 *)column + column->length + 4);
}
}
}
//
// R_FlatToPatch
//
// Convert a flat to a patch.
//
patch_t *R_FlatToPatch(UINT8 *raw, UINT16 width, UINT16 height, UINT16 leftoffset, UINT16 topoffset, size_t *destsize, boolean transparency)
{
UINT32 x, y;
UINT8 *img;
UINT8 *imgptr = imgbuf;
UINT8 *colpointers, *startofspan;
size_t size = 0;
// Write image size and offset
WRITEINT16(imgptr, width);
WRITEINT16(imgptr, height);
WRITEINT16(imgptr, leftoffset);
WRITEINT16(imgptr, topoffset);
// Leave placeholder to column pointers
colpointers = imgptr;
imgptr += width*4;
// Write columns
for (x = 0; x < width; x++)
{
int lastStartY = 0;
int spanSize = 0;
startofspan = NULL;
// Write column pointer
WRITEINT32(colpointers, imgptr - imgbuf);
// Write pixels
for (y = 0; y < height; y++)
{
UINT8 paletteIndex = raw[((y * width) + x)];
boolean opaque = transparency ? (paletteIndex != TRANSPARENTPIXEL) : true;
// End span if we have a transparent pixel
if (!opaque)
{
if (startofspan)
WRITEUINT8(imgptr, 0);
startofspan = NULL;
continue;
}
// Start new column if we need to
if (!startofspan || spanSize == 255)
{
int writeY = y;
// If we reached the span size limit, finish the previous span
if (startofspan)
WRITEUINT8(imgptr, 0);
if (y > 254)
{
// Make sure we're aligned to 254
if (lastStartY < 254)
{
WRITEUINT8(imgptr, 254);
WRITEUINT8(imgptr, 0);
imgptr += 2;
lastStartY = 254;
}
// Write stopgap empty spans if needed
writeY = y - lastStartY;
while (writeY > 254)
{
WRITEUINT8(imgptr, 254);
WRITEUINT8(imgptr, 0);
imgptr += 2;
writeY -= 254;
}
}
startofspan = imgptr;
WRITEUINT8(imgptr, writeY);
imgptr += 2;
spanSize = 0;
lastStartY = y;
}
// Write the pixel
WRITEUINT8(imgptr, paletteIndex);
spanSize++;
startofspan[1] = spanSize;
}
if (startofspan)
WRITEUINT8(imgptr, 0);
WRITEUINT8(imgptr, 0xFF);
}
size = imgptr-imgbuf;
img = Z_Malloc(size, PU_STATIC, NULL);
memcpy(img, imgbuf, size);
Z_Free(raw);
if (destsize != NULL)
*destsize = size;
return (patch_t *)img;
}
//
// R_FlatToPatch_16bpp
//
// Convert a 16-bit flat to a patch.
//
patch_t *R_FlatToPatch_16bpp(UINT16 *raw, UINT16 width, UINT16 height, size_t *size)
{
UINT32 x, y;
UINT8 *img;
UINT8 *imgptr = imgbuf;
UINT8 *colpointers, *startofspan;
if (!raw)
return NULL;
// Write image size and offset
WRITEINT16(imgptr, width);
WRITEINT16(imgptr, height);
// no offsets
WRITEINT16(imgptr, 0);
WRITEINT16(imgptr, 0);
// Leave placeholder to column pointers
colpointers = imgptr;
imgptr += width*4;
// Write columns
for (x = 0; x < width; x++)
{
int lastStartY = 0;
int spanSize = 0;
startofspan = NULL;
// Write column pointer
WRITEINT32(colpointers, imgptr - imgbuf);
// Write pixels
for (y = 0; y < height; y++)
{
UINT16 pixel = raw[((y * width) + x)];
UINT8 paletteIndex = (pixel & 0xFF);
UINT8 opaque = (pixel != 0xFF00); // If 1, we have a pixel
// End span if we have a transparent pixel
if (!opaque)
{
if (startofspan)
WRITEUINT8(imgptr, 0);
startofspan = NULL;
continue;
}
// Start new column if we need to
if (!startofspan || spanSize == 255)
{
int writeY = y;
// If we reached the span size limit, finish the previous span
if (startofspan)
WRITEUINT8(imgptr, 0);
if (y > 254)
{
// Make sure we're aligned to 254
if (lastStartY < 254)
{
WRITEUINT8(imgptr, 254);
WRITEUINT8(imgptr, 0);
imgptr += 2;
lastStartY = 254;
}
// Write stopgap empty spans if needed
writeY = y - lastStartY;
while (writeY > 254)
{
WRITEUINT8(imgptr, 254);
WRITEUINT8(imgptr, 0);
imgptr += 2;
writeY -= 254;
}
}
startofspan = imgptr;
WRITEUINT8(imgptr, writeY);
imgptr += 2;
spanSize = 0;
lastStartY = y;
}
// Write the pixel
WRITEUINT8(imgptr, paletteIndex);
spanSize++;
startofspan[1] = spanSize;
}
if (startofspan)
WRITEUINT8(imgptr, 0);
WRITEUINT8(imgptr, 0xFF);
}
*size = imgptr-imgbuf;
img = Z_Malloc(*size, PU_STATIC, NULL);
memcpy(img, imgbuf, *size);
return (patch_t *)img;
}
//
// R_IsLumpPNG
//
// Returns true if the lump is a valid PNG.
//
boolean R_IsLumpPNG(const UINT8 *d, size_t s)
{
if (s < 67) // http://garethrees.org/2007/11/14/pngcrush/
return false;
// Check for PNG file signature using memcmp
// As it may be faster on CPUs with slow unaligned memory access
// Ref: http://www.libpng.org/pub/png/spec/1.2/PNG-Rationale.html#R.PNG-file-signature
return (memcmp(&d[0], "\x89\x50\x4e\x47\x0d\x0a\x1a\x0a", 8) == 0);
}
#ifndef NO_PNG_LUMPS
#ifdef HAVE_PNG
/*#if PNG_LIBPNG_VER_DLLNUM < 14
typedef PNG_CONST png_byte *png_const_bytep;
#endif*/
typedef struct
{
const UINT8 *buffer;
UINT32 size;
UINT32 position;
} png_io_t;
static void PNG_IOReader(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_io_t *f = png_get_io_ptr(png_ptr);
if (length > (f->size - f->position))
png_error(png_ptr, "PNG_IOReader: buffer overrun");
memcpy(data, f->buffer + f->position, length);
f->position += length;
}
typedef struct
{
char name[4];
void *data;
size_t size;
} png_chunk_t;
static png_byte *chunkname = NULL;
static png_chunk_t chunk;
static int PNG_ChunkReader(png_structp png_ptr, png_unknown_chunkp chonk)
{
(void)png_ptr;
if (!memcmp(chonk->name, chunkname, 4))
{
memcpy(chunk.name, chonk->name, 4);
chunk.size = chonk->size;
chunk.data = Z_Malloc(chunk.size, PU_STATIC, NULL);
memcpy(chunk.data, chonk->data, chunk.size);
return 1;
}
return 0;
}
static void PNG_error(png_structp PNG, png_const_charp pngtext)
{
CONS_Debug(DBG_RENDER, "libpng error at %p: %s", PNG, pngtext);
//I_Error("libpng error at %p: %s", PNG, pngtext);
}
static void PNG_warn(png_structp PNG, png_const_charp pngtext)
{
CONS_Debug(DBG_RENDER, "libpng warning at %p: %s", PNG, pngtext);
}
static png_bytep *PNG_Read(const UINT8 *png, UINT16 *w, UINT16 *h, INT16 *topoffset, INT16 *leftoffset, size_t size)
{
png_structp png_ptr;
png_infop png_info_ptr;
png_uint_32 width, height;
int bit_depth, color_type;
png_uint_32 y;
#ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD
jmp_buf jmpbuf;
#endif
#endif
png_io_t png_io;
png_bytep *row_pointers;
png_byte grAb_chunk[5] = {'g', 'r', 'A', 'b', (png_byte)'\0'};
png_voidp *user_chunk_ptr;
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, PNG_error, PNG_warn);
if (!png_ptr)
{
CONS_Debug(DBG_RENDER, "PNG_Load: Error on initialize libpng\n");
return NULL;
}
png_info_ptr = png_create_info_struct(png_ptr);
if (!png_info_ptr)
{
CONS_Debug(DBG_RENDER, "PNG_Load: Error on allocate for libpng\n");
png_destroy_read_struct(&png_ptr, NULL, NULL);
return NULL;
}
#ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf))
#else
if (setjmp(png_jmpbuf(png_ptr)))
#endif
{
//CONS_Debug(DBG_RENDER, "libpng load error on %s\n", filename);
png_destroy_read_struct(&png_ptr, &png_info_ptr, NULL);
return NULL;
}
#ifdef USE_FAR_KEYWORD
png_memcpy(png_jmpbuf(png_ptr), jmpbuf, sizeof jmp_buf);
#endif
// set our own read function
png_io.buffer = png;
png_io.size = size;
png_io.position = 0;
png_set_read_fn(png_ptr, &png_io, PNG_IOReader);
memset(&chunk, 0x00, sizeof(png_chunk_t));
chunkname = grAb_chunk; // I want to read a grAb chunk
user_chunk_ptr = png_get_user_chunk_ptr(png_ptr);
png_set_read_user_chunk_fn(png_ptr, user_chunk_ptr, PNG_ChunkReader);
png_set_keep_unknown_chunks(png_ptr, 2, chunkname, 1);
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_set_user_limits(png_ptr, 2048, 2048);
#endif
png_read_info(png_ptr, png_info_ptr);
png_get_IHDR(png_ptr, png_info_ptr, &width, &height, &bit_depth, &color_type, NULL, NULL, NULL);
if (bit_depth == 16)
png_set_strip_16(png_ptr);
if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
png_set_gray_to_rgb(png_ptr);
else if (color_type == PNG_COLOR_TYPE_PALETTE)
png_set_palette_to_rgb(png_ptr);
if (png_get_valid(png_ptr, png_info_ptr, PNG_INFO_tRNS))
png_set_tRNS_to_alpha(png_ptr);
else if (color_type != PNG_COLOR_TYPE_RGB_ALPHA && color_type != PNG_COLOR_TYPE_GRAY_ALPHA)
{
#if PNG_LIBPNG_VER < 10207
png_set_filler(png_ptr, 0xFF, PNG_FILLER_AFTER);
#else
png_set_add_alpha(png_ptr, 0xFF, PNG_FILLER_AFTER);
#endif
}
png_read_update_info(png_ptr, png_info_ptr);
// Read the image
row_pointers = (png_bytep*)malloc(sizeof(png_bytep) * height);
for (y = 0; y < height; y++)
row_pointers[y] = (png_byte*)malloc(png_get_rowbytes(png_ptr, png_info_ptr));
png_read_image(png_ptr, row_pointers);
// Read grAB chunk
if ((topoffset || leftoffset) && (chunk.data != NULL))
{
INT32 *offsets = (INT32 *)chunk.data;
// read left offset
if (leftoffset != NULL)
*leftoffset = (INT16)BIGENDIAN_LONG(*offsets);
offsets++;
// read top offset
if (topoffset != NULL)
*topoffset = (INT16)BIGENDIAN_LONG(*offsets);
}
// bye
png_destroy_read_struct(&png_ptr, &png_info_ptr, NULL);
if (chunk.data)
Z_Free(chunk.data);
*w = (INT32)width;
*h = (INT32)height;
return row_pointers;
}
// Convert a PNG to a raw image.
static UINT8 *PNG_RawConvert(const UINT8 *png, UINT16 *w, UINT16 *h, INT16 *topoffset, INT16 *leftoffset, size_t size)
{
UINT8 *flat;
png_uint_32 x, y;
png_bytep *row_pointers = PNG_Read(png, w, h, topoffset, leftoffset, size);
png_uint_32 width = *w, height = *h;
if (!row_pointers)
I_Error("PNG_RawConvert: conversion failed");
// Convert the image to 8bpp
flat = Z_Malloc(width * height, PU_LEVEL, NULL);
memset(flat, TRANSPARENTPIXEL, width * height);
for (y = 0; y < height; y++)
{
png_bytep row = row_pointers[y];
for (x = 0; x < width; x++)
{
png_bytep px = &(row[x * 4]);
if ((UINT8)px[3])
flat[((y * width) + x)] = NearestColor((UINT8)px[0], (UINT8)px[1], (UINT8)px[2]);
}
}
free(row_pointers);
return flat;
}
//
// R_PNGToFlat
//
// Convert a PNG to a flat.
//
UINT8 *R_PNGToFlat(UINT16 *width, UINT16 *height, UINT8 *png, size_t size)
{
return PNG_RawConvert(png, width, height, NULL, NULL, size);
}
//
// R_PNGToPatch
//
// Convert a PNG to a patch.
//
patch_t *R_PNGToPatch(const UINT8 *png, size_t size, size_t *destsize, boolean transparency)
{
UINT16 width, height;
INT16 topoffset = 0, leftoffset = 0;
UINT8 *raw = PNG_RawConvert(png, &width, &height, &topoffset, &leftoffset, size);
if (!raw)
I_Error("R_PNGToPatch: conversion failed");
return R_FlatToPatch(raw, width, height, leftoffset, topoffset, destsize, transparency);
}
//
// R_PNGDimensions
//
// Get the dimensions of a PNG file.
//
boolean R_PNGDimensions(UINT8 *png, INT16 *width, INT16 *height, size_t size)
{
png_structp png_ptr;
png_infop png_info_ptr;
png_uint_32 w, h;
int bit_depth, color_type;
#ifdef PNG_SETJMP_SUPPORTED
#ifdef USE_FAR_KEYWORD
jmp_buf jmpbuf;
#endif
#endif
png_io_t png_io;
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL,
PNG_error, PNG_warn);
if (!png_ptr)
{
CONS_Debug(DBG_RENDER, "PNG_Load: Error on initialize libpng\n");
return false;
}
png_info_ptr = png_create_info_struct(png_ptr);
if (!png_info_ptr)
{
CONS_Debug(DBG_RENDER, "PNG_Load: Error on allocate for libpng\n");
png_destroy_read_struct(&png_ptr, NULL, NULL);
return false;
}
#ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf))
#else
if (setjmp(png_jmpbuf(png_ptr)))
#endif
{
//CONS_Debug(DBG_RENDER, "libpng load error on %s\n", filename);
png_destroy_read_struct(&png_ptr, &png_info_ptr, NULL);
return false;
}
#ifdef USE_FAR_KEYWORD
png_memcpy(png_jmpbuf(png_ptr), jmpbuf, sizeof jmp_buf);
#endif
// set our own read function
png_io.buffer = png;
png_io.size = size;
png_io.position = 0;
png_set_read_fn(png_ptr, &png_io, PNG_IOReader);
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
png_set_user_limits(png_ptr, 2048, 2048);
#endif
png_read_info(png_ptr, png_info_ptr);
png_get_IHDR(png_ptr, png_info_ptr, &w, &h, &bit_depth, &color_type,
NULL, NULL, NULL);
// okay done. stop.
png_destroy_read_struct(&png_ptr, &png_info_ptr, NULL);
*width = (INT32)w;
*height = (INT32)h;
return true;
}
#endif
#endif
//
// R_ParseSpriteInfoFrame
//
// Parse a SPRTINFO frame.
//
static void R_ParseSpriteInfoFrame(spriteinfo_t *info)
{
char *sprinfoToken;
size_t sprinfoTokenLength;
char *frameChar = NULL;
UINT8 frameFrame = 0xFF;
INT16 frameXPivot = 0;
INT16 frameYPivot = 0;
rotaxis_t frameRotAxis = 0;
// Sprite identifier
sprinfoToken = M_GetToken(NULL);
if (sprinfoToken == NULL)
{
I_Error("Error parsing SPRTINFO lump: Unexpected end of file where sprite frame should be");
}
sprinfoTokenLength = strlen(sprinfoToken);
if (sprinfoTokenLength != 1)
{
I_Error("Error parsing SPRTINFO lump: Invalid frame \"%s\"",sprinfoToken);
}
else
frameChar = sprinfoToken;
frameFrame = R_Char2Frame(frameChar[0]);
Z_Free(sprinfoToken);
// Left Curly Brace
sprinfoToken = M_GetToken(NULL);
if (sprinfoToken == NULL)
I_Error("Error parsing SPRTINFO lump: Missing sprite info");
else
{
if (strcmp(sprinfoToken,"{")==0)
{
Z_Free(sprinfoToken);
sprinfoToken = M_GetToken(NULL);
if (sprinfoToken == NULL)
{
I_Error("Error parsing SPRTINFO lump: Unexpected end of file where sprite info should be");
}
while (strcmp(sprinfoToken,"}")!=0)
{
if (stricmp(sprinfoToken, "XPIVOT")==0)
{
Z_Free(sprinfoToken);
sprinfoToken = M_GetToken(NULL);
frameXPivot = atoi(sprinfoToken);
}
else if (stricmp(sprinfoToken, "YPIVOT")==0)
{
Z_Free(sprinfoToken);
sprinfoToken = M_GetToken(NULL);
frameYPivot = atoi(sprinfoToken);
}
else if (stricmp(sprinfoToken, "ROTAXIS")==0)
{
Z_Free(sprinfoToken);
sprinfoToken = M_GetToken(NULL);
if ((stricmp(sprinfoToken, "X")==0) || (stricmp(sprinfoToken, "XAXIS")==0) || (stricmp(sprinfoToken, "ROLL")==0))
frameRotAxis = ROTAXIS_X;
else if ((stricmp(sprinfoToken, "Y")==0) || (stricmp(sprinfoToken, "YAXIS")==0) || (stricmp(sprinfoToken, "PITCH")==0))
frameRotAxis = ROTAXIS_Y;
else if ((stricmp(sprinfoToken, "Z")==0) || (stricmp(sprinfoToken, "ZAXIS")==0) || (stricmp(sprinfoToken, "YAW")==0))
frameRotAxis = ROTAXIS_Z;
}
Z_Free(sprinfoToken);
sprinfoToken = M_GetToken(NULL);
if (sprinfoToken == NULL)
{
I_Error("Error parsing SPRTINFO lump: Unexpected end of file where sprite info or right curly brace should be");
}
}
}
Z_Free(sprinfoToken);
}
// set fields
info->pivot[frameFrame].x = frameXPivot;
info->pivot[frameFrame].y = frameYPivot;
info->pivot[frameFrame].rotaxis = frameRotAxis;
}
//
// R_ParseSpriteInfo
//
// Parse a SPRTINFO lump.
//
static void R_ParseSpriteInfo(boolean spr2)
{
spriteinfo_t *info;
char *sprinfoToken;
size_t sprinfoTokenLength;
char newSpriteName[5]; // no longer dynamically allocated
spritenum_t sprnum = NUMSPRITES;
playersprite_t spr2num = NUMPLAYERSPRITES;
INT32 i;
INT32 skinnumbers[MAXSKINS];
INT32 foundskins = 0;
// Sprite name
sprinfoToken = M_GetToken(NULL);
if (sprinfoToken == NULL)
{
I_Error("Error parsing SPRTINFO lump: Unexpected end of file where sprite name should be");
}
sprinfoTokenLength = strlen(sprinfoToken);
if (sprinfoTokenLength != 4)
{
I_Error("Error parsing SPRTINFO lump: Sprite name \"%s\" isn't 4 characters long",sprinfoToken);
}
else
{
memset(&newSpriteName, 0, 5);
M_Memcpy(newSpriteName, sprinfoToken, sprinfoTokenLength);
// ^^ we've confirmed that the token is == 4 characters so it will never overflow a 5 byte char buffer
strupr(newSpriteName); // Just do this now so we don't have to worry about it
}
Z_Free(sprinfoToken);
if (!spr2)
{
for (i = 0; i <= NUMSPRITES; i++)
{
if (i == NUMSPRITES)
I_Error("Error parsing SPRTINFO lump: Unknown sprite name \"%s\"", newSpriteName);
if (!memcmp(newSpriteName,sprnames[i],4))
{
sprnum = i;
break;
}
}
}
else
{
for (i = 0; i <= NUMPLAYERSPRITES; i++)
{
if (i == NUMPLAYERSPRITES)
I_Error("Error parsing SPRTINFO lump: Unknown sprite2 name \"%s\"", newSpriteName);
if (!memcmp(newSpriteName,spr2names[i],4))
{
spr2num = i;
break;
}
}
}
// allocate a spriteinfo
info = Z_Calloc(sizeof(spriteinfo_t), PU_STATIC, NULL);
info->available = true;
#ifdef ROTSPRITE
if ((sprites != NULL) && (!spr2))
R_FreeSingleRotSprite(&sprites[sprnum]);
#endif
// Left Curly Brace
sprinfoToken = M_GetToken(NULL);
if (sprinfoToken == NULL)
{
I_Error("Error parsing SPRTINFO lump: Unexpected end of file where open curly brace for sprite \"%s\" should be",newSpriteName);
}
if (strcmp(sprinfoToken,"{")==0)
{
Z_Free(sprinfoToken);
sprinfoToken = M_GetToken(NULL);
if (sprinfoToken == NULL)
{
I_Error("Error parsing SPRTINFO lump: Unexpected end of file where definition for sprite \"%s\" should be",newSpriteName);
}
while (strcmp(sprinfoToken,"}")!=0)
{
if (stricmp(sprinfoToken, "SKIN")==0)
{
INT32 skinnum;
char *skinName = NULL;
if (!spr2)
I_Error("Error parsing SPRTINFO lump: \"SKIN\" token found outside of a sprite2 definition");
Z_Free(sprinfoToken);
// Skin name
sprinfoToken = M_GetToken(NULL);
if (sprinfoToken == NULL)
{
I_Error("Error parsing SPRTINFO lump: Unexpected end of file where skin frame should be");
}
// copy skin name yada yada
sprinfoTokenLength = strlen(sprinfoToken);
skinName = (char *)Z_Malloc((sprinfoTokenLength+1)*sizeof(char),PU_STATIC,NULL);
M_Memcpy(skinName,sprinfoToken,sprinfoTokenLength*sizeof(char));
skinName[sprinfoTokenLength] = '\0';
strlwr(skinName);
Z_Free(sprinfoToken);
skinnum = R_SkinAvailable(skinName);
if (skinnum == -1)
I_Error("Error parsing SPRTINFO lump: Unknown skin \"%s\"", skinName);
skinnumbers[foundskins] = skinnum;
foundskins++;
}
else if (stricmp(sprinfoToken, "FRAME")==0)
{
R_ParseSpriteInfoFrame(info);
Z_Free(sprinfoToken);
if (spr2)
{
if (!foundskins)
I_Error("Error parsing SPRTINFO lump: No skins specified in this sprite2 definition");
for (i = 0; i < foundskins; i++)
{
size_t skinnum = skinnumbers[i];
skin_t *skin = &skins[skinnum];
spriteinfo_t *sprinfo = skin->sprinfo;
#ifdef ROTSPRITE
R_FreeSkinRotSprite(skinnum);
#endif
M_Memcpy(&sprinfo[spr2num], info, sizeof(spriteinfo_t));
}
}
else
M_Memcpy(&spriteinfo[sprnum], info, sizeof(spriteinfo_t));
}
else
{
I_Error("Error parsing SPRTINFO lump: Unknown keyword \"%s\" in sprite %s",sprinfoToken,newSpriteName);
}
sprinfoToken = M_GetToken(NULL);
if (sprinfoToken == NULL)
{
I_Error("Error parsing SPRTINFO lump: Unexpected end of file where sprite info or right curly brace for sprite \"%s\" should be",newSpriteName);
}
}
}
else
{
I_Error("Error parsing SPRTINFO lump: Expected \"{\" for sprite \"%s\", got \"%s\"",newSpriteName,sprinfoToken);
}
Z_Free(sprinfoToken);
Z_Free(info);
}
//
// R_ParseSPRTINFOLump
//
// Read a SPRTINFO lump.
//
void R_ParseSPRTINFOLump(UINT16 wadNum, UINT16 lumpNum)
{
char *sprinfoLump;
size_t sprinfoLumpLength;
char *sprinfoText;
char *sprinfoToken;
// Since lumps AREN'T \0-terminated like I'd assumed they should be, I'll
// need to make a space of memory where I can ensure that it will terminate
// correctly. Start by loading the relevant data from the WAD.
sprinfoLump = (char *)W_CacheLumpNumPwad(wadNum, lumpNum, PU_STATIC);
// If that didn't exist, we have nothing to do here.
if (sprinfoLump == NULL) return;
// If we're still here, then it DOES exist; figure out how long it is, and allot memory accordingly.
sprinfoLumpLength = W_LumpLengthPwad(wadNum, lumpNum);
sprinfoText = (char *)Z_Malloc((sprinfoLumpLength+1)*sizeof(char),PU_STATIC,NULL);
// Now move the contents of the lump into this new location.
memmove(sprinfoText,sprinfoLump,sprinfoLumpLength);
// Make damn well sure the last character in our new memory location is \0.
sprinfoText[sprinfoLumpLength] = '\0';
// Finally, free up the memory from the first data load, because we really
// don't need it.
Z_Free(sprinfoLump);
sprinfoToken = M_GetToken(sprinfoText);
while (sprinfoToken != NULL)
{
if (!stricmp(sprinfoToken, "SPRITE"))
R_ParseSpriteInfo(false);
else if (!stricmp(sprinfoToken, "SPRITE2"))
R_ParseSpriteInfo(true);
else
I_Error("Error parsing SPRTINFO lump: Unknown keyword \"%s\"", sprinfoToken);
Z_Free(sprinfoToken);
sprinfoToken = M_GetToken(NULL);
}
Z_Free((void *)sprinfoText);
}
//
// R_LoadSpriteInfoLumps
//
// Load and read every SPRTINFO lump from the specified file.
//
void R_LoadSpriteInfoLumps(UINT16 wadnum, UINT16 numlumps)
{
lumpinfo_t *lumpinfo = wadfiles[wadnum]->lumpinfo;
UINT16 i;
char *name;
for (i = 0; i < numlumps; i++, lumpinfo++)
{
name = lumpinfo->name;
// Load SPRTINFO and SPR_ lumps as SpriteInfo
if (!memcmp(name, "SPRTINFO", 8) || !memcmp(name, "SPR_", 4))
R_ParseSPRTINFOLump(wadnum, i);
}
}
static UINT16 GetPatchPixel(patch_t *patch, INT32 x, INT32 y, boolean flip)
{
fixed_t ofs;
column_t *column;
UINT8 *source;
if (x >= 0 && x < SHORT(patch->width))
{
INT32 topdelta, prevdelta = -1;
column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[flip ? (patch->width-1-x) : x]));
while (column->topdelta != 0xff)
{
topdelta = column->topdelta;
if (topdelta <= prevdelta)
topdelta += prevdelta;
prevdelta = topdelta;
source = (UINT8 *)(column) + 3;
for (ofs = 0; ofs < column->length; ofs++)
{
if ((topdelta + ofs) == y)
return source[ofs];
}
column = (column_t *)((UINT8 *)column + column->length + 4);
}
}
return 0xFF00;
}
#ifdef ROTSPRITE
//
// R_GetRollAngle
//
// Angles precalculated in R_InitSprites.
//
fixed_t rollcosang[ROTANGLES];
fixed_t rollsinang[ROTANGLES];
INT32 R_GetRollAngle(angle_t rollangle)
{
INT32 ra = AngleFixed(rollangle)>>FRACBITS;
#if (ROTANGDIFF > 1)
ra += (ROTANGDIFF/2);
#endif
ra /= ROTANGDIFF;
ra %= ROTANGLES;
return ra;
}
//
// R_CacheRotSprite
//
// Create a rotated sprite.
//
void R_CacheRotSprite(spritenum_t sprnum, UINT8 frame, spriteinfo_t *sprinfo, spriteframe_t *sprframe, INT32 rot, UINT8 flip)
{
UINT32 i;
INT32 angle;
patch_t *patch;
patch_t *newpatch;
UINT16 *rawdst;
size_t size;
INT32 bflip = (flip != 0x00);
#define SPRITE_XCENTER (leftoffset)
#define SPRITE_YCENTER (height / 2)
#define ROTSPRITE_XCENTER (newwidth / 2)
#define ROTSPRITE_YCENTER (newheight / 2)
if (!sprframe->rotsprite.cached[rot])
{
INT32 dx, dy;
INT32 px, py;
INT32 width, height, leftoffset;
fixed_t ca, sa;
lumpnum_t lump = sprframe->lumppat[rot];
if (lump == LUMPERROR)
return;
// Because there's something wrong with SPR_DFLM, I guess
if (!R_CheckIfPatch(lump))
return;
patch = (patch_t *)W_CacheLumpNum(lump, PU_STATIC);
width = patch->width;
height = patch->height;
leftoffset = patch->leftoffset;
// rotation pivot
px = SPRITE_XCENTER;
py = SPRITE_YCENTER;
// get correct sprite info for sprite
if (sprinfo == NULL)
sprinfo = &spriteinfo[sprnum];
if (sprinfo->available)
{
px = sprinfo->pivot[frame].x;
py = sprinfo->pivot[frame].y;
}
if (bflip)
{
px = width - px;
leftoffset = width - leftoffset;
}
for (angle = 1; angle < ROTANGLES; angle++)
{
INT32 newwidth, newheight;
ca = rollcosang[angle];
sa = rollsinang[angle];
// Find the dimensions of the rotated patch.
{
INT32 w1 = abs(FixedMul(width << FRACBITS, ca) - FixedMul(height << FRACBITS, sa));
INT32 w2 = abs(FixedMul(-(width << FRACBITS), ca) - FixedMul(height << FRACBITS, sa));
INT32 h1 = abs(FixedMul(width << FRACBITS, sa) + FixedMul(height << FRACBITS, ca));
INT32 h2 = abs(FixedMul(-(width << FRACBITS), sa) + FixedMul(height << FRACBITS, ca));
w1 = FixedInt(FixedCeil(w1 + (FRACUNIT/2)));
w2 = FixedInt(FixedCeil(w2 + (FRACUNIT/2)));
h1 = FixedInt(FixedCeil(h1 + (FRACUNIT/2)));
h2 = FixedInt(FixedCeil(h2 + (FRACUNIT/2)));
newwidth = max(width, max(w1, w2));
newheight = max(height, max(h1, h2));
}
// check boundaries
{
fixed_t top[2][2];
fixed_t bottom[2][2];
top[0][0] = FixedMul((-ROTSPRITE_XCENTER) << FRACBITS, ca) + FixedMul((-ROTSPRITE_YCENTER) << FRACBITS, sa) + (px << FRACBITS);
top[0][1] = FixedMul((-ROTSPRITE_XCENTER) << FRACBITS, sa) + FixedMul((-ROTSPRITE_YCENTER) << FRACBITS, ca) + (py << FRACBITS);
top[1][0] = FixedMul((newwidth-ROTSPRITE_XCENTER) << FRACBITS, ca) + FixedMul((-ROTSPRITE_YCENTER) << FRACBITS, sa) + (px << FRACBITS);
top[1][1] = FixedMul((newwidth-ROTSPRITE_XCENTER) << FRACBITS, sa) + FixedMul((-ROTSPRITE_YCENTER) << FRACBITS, ca) + (py << FRACBITS);
bottom[0][0] = FixedMul((-ROTSPRITE_XCENTER) << FRACBITS, ca) + FixedMul((newheight-ROTSPRITE_YCENTER) << FRACBITS, sa) + (px << FRACBITS);
bottom[0][1] = -FixedMul((-ROTSPRITE_XCENTER) << FRACBITS, sa) + FixedMul((newheight-ROTSPRITE_YCENTER) << FRACBITS, ca) + (py << FRACBITS);
bottom[1][0] = FixedMul((newwidth-ROTSPRITE_XCENTER) << FRACBITS, ca) + FixedMul((newheight-ROTSPRITE_YCENTER) << FRACBITS, sa) + (px << FRACBITS);
bottom[1][1] = -FixedMul((newwidth-ROTSPRITE_XCENTER) << FRACBITS, sa) + FixedMul((newheight-ROTSPRITE_YCENTER) << FRACBITS, ca) + (py << FRACBITS);
top[0][0] >>= FRACBITS;
top[0][1] >>= FRACBITS;
top[1][0] >>= FRACBITS;
top[1][1] >>= FRACBITS;
bottom[0][0] >>= FRACBITS;
bottom[0][1] >>= FRACBITS;
bottom[1][0] >>= FRACBITS;
bottom[1][1] >>= FRACBITS;
#define BOUNDARYWCHECK(b) (b[0] < 0 || b[0] >= width)
#define BOUNDARYHCHECK(b) (b[1] < 0 || b[1] >= height)
#define BOUNDARYADJUST(x) x *= 2
// top left/right
if (BOUNDARYWCHECK(top[0]) || BOUNDARYWCHECK(top[1]))
BOUNDARYADJUST(newwidth);
// bottom left/right
else if (BOUNDARYWCHECK(bottom[0]) || BOUNDARYWCHECK(bottom[1]))
BOUNDARYADJUST(newwidth);
// top left/right
if (BOUNDARYHCHECK(top[0]) || BOUNDARYHCHECK(top[1]))
BOUNDARYADJUST(newheight);
// bottom left/right
else if (BOUNDARYHCHECK(bottom[0]) || BOUNDARYHCHECK(bottom[1]))
BOUNDARYADJUST(newheight);
#undef BOUNDARYWCHECK
#undef BOUNDARYHCHECK
#undef BOUNDARYADJUST
}
// Draw the rotated sprite to a temporary buffer.
size = (newwidth * newheight);
if (!size)
size = (width * height);
rawdst = Z_Malloc(size * sizeof(UINT16), PU_STATIC, NULL);
for (i = 0; i < size; i++)
rawdst[i] = 0xFF00;
for (dy = 0; dy < newheight; dy++)
{
for (dx = 0; dx < newwidth; dx++)
{
INT32 x = (dx-ROTSPRITE_XCENTER) << FRACBITS;
INT32 y = (dy-ROTSPRITE_YCENTER) << FRACBITS;
INT32 sx = FixedMul(x, ca) + FixedMul(y, sa) + (px << FRACBITS);
INT32 sy = -FixedMul(x, sa) + FixedMul(y, ca) + (py << FRACBITS);
sx >>= FRACBITS;
sy >>= FRACBITS;
if (sx >= 0 && sy >= 0 && sx < width && sy < height)
rawdst[(dy*newwidth)+dx] = GetPatchPixel(patch, sx, sy, bflip);
}
}
// make patch
newpatch = R_FlatToPatch_16bpp(rawdst, newwidth, newheight, &size);
{
newpatch->leftoffset = (newpatch->width / 2) + (leftoffset - px);
newpatch->topoffset = (newpatch->height / 2) + (patch->topoffset - py);
}
//BP: we cannot use special tric in hardware mode because feet in ground caused by z-buffer
if (rendermode != render_none) // not for psprite
newpatch->topoffset += FEETADJUST>>FRACBITS;
// P_PrecacheLevel
if (devparm) spritememory += size;
#ifdef HWRENDER
if (rendermode == render_opengl)
{
GLPatch_t *grPatch = HWR_GetCachedGLRotSprite(sprframe->rotsprite.hardware_patch[rot], angle, newpatch);
HWR_MakePatch(newpatch, grPatch, grPatch->mipmap, false);
sprframe->rotsprite.patch[rot][angle] = (patch_t *)grPatch;
}
else
#endif // HWRENDER
sprframe->rotsprite.patch[rot][angle] = newpatch;
// free rotated image data
Z_Free(rawdst);
}
// This rotation is cached now
sprframe->rotsprite.cached[rot] = true;
// free image data
Z_Free(patch);
}
#undef SPRITE_XCENTER
#undef SPRITE_YCENTER
#undef ROTSPRITE_XCENTER
#undef ROTSPRITE_YCENTER
}
//
// R_FreeSingleRotSprite
//
// Free sprite rotation data from memory, for a single spritedef.
//
void R_FreeSingleRotSprite(spritedef_t *spritedef)
{
UINT8 frame;
INT32 rot, ang;
for (frame = 0; frame < spritedef->numframes; frame++)
{
spriteframe_t *sprframe = &spritedef->spriteframes[frame];
for (rot = 0; rot < 8; rot++)
{
if (sprframe->rotsprite.cached[rot])
{
for (ang = 0; ang < ROTANGLES; ang++)
{
patch_t *rotsprite = sprframe->rotsprite.patch[rot][ang];
if (rotsprite)
{
#ifdef HWRENDER
if (rendermode == render_opengl)
{
GLPatch_t *grPatch = (GLPatch_t *)rotsprite;
if (grPatch->rawpatch)
{
Z_Free(grPatch->rawpatch);
grPatch->rawpatch = NULL;
}
if (grPatch->mipmap)
{
if (grPatch->mipmap->grInfo.data)
{
Z_Free(grPatch->mipmap->grInfo.data);
grPatch->mipmap->grInfo.data = NULL;
}
Z_Free(grPatch->mipmap);
grPatch->mipmap = NULL;
}
}
#endif
Z_Free(rotsprite);
}
}
sprframe->rotsprite.cached[rot] = false;
}
}
}
}
//
// R_FreeSkinRotSprite
//
// Free sprite rotation data from memory, for a skin.
// Calls R_FreeSingleRotSprite.
//
void R_FreeSkinRotSprite(size_t skinnum)
{
size_t i;
skin_t *skin = &skins[skinnum];
spritedef_t *skinsprites = skin->sprites;
for (i = 0; i < NUMPLAYERSPRITES*2; i++)
{
R_FreeSingleRotSprite(skinsprites);
skinsprites++;
}
}
#endif
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