diff options
Diffstat (limited to '')
| -rw-r--r-- | cards.3 | 217 | ||||
| -rw-r--r-- | cards.c | 428 | ||||
| -rw-r--r-- | cards.h | 80 |
3 files changed, 0 insertions, 725 deletions
diff --git a/cards.3 b/cards.3 deleted file mode 100644 index 7882756..0000000 --- a/cards.3 +++ /dev/null @@ -1,217 +0,0 @@ -.Dd March 28, 2019 -.Dt CARDS 3 -.Os -. -.Sh NAME -.Nm Cards_LoadCards , -.Nm Cards_LoadFreeCell , -.Nm Cards_InvertSurface -.Nd bitmap resource loader -. -.Sh SYNOPSIS -.In cards.h -. -.Ft int -.Fo Cards_LoadCards -.Fa "SDL_Surface *surfaces[]" -.Fa "size_t count" -.Fa "SDL_RWops *rw" -.Fa "enum Cards_Flag flags" -.Fc -. -.Ft int -.Fo Cards_LoadFreeCell -.Fa "SDL_Surface *surfaces[]" -.Fa "size_t count" -.Fa "SDL_RWops *rw" -.Fa "enum Cards_Flag flags" -.Fc -. -.Ft int -.Fn Cards_InvertSurface "SDL_Surface *surface" -. -.Sh DESCRIPTION -.Fn Cards_LoadCards -and -.Fn Cards_LoadFreeCell -load bitmap resources -into an array of -.Fa count -surfaces. -Resources can be loaded -from 16-bit NE executables -or from 32-bit PE executables. -. -.Pp -.Fn Cards_LoadCards -loads card bitmaps from a -.Pa CARDS.DLL -or Windows 3.0 -.Pa SOL.EXE -file -.Fa rw . -. -.Pp -Indices of loaded surfaces -are defined by the following: -.Bl -tag -width Ds -offset indent -.It Suit -.Dv Cards_Club , -.Dv Cards_Diamond , -.Dv Cards_Heart , -.Dv Cards_Spade . -.It Rank -.Dv Cards_A , -.Dv Cards_2 , -.Dv Cards_3 , -.Dv Cards_4 , -.Dv Cards_5 , -.Dv Cards_6 , -.Dv Cards_7 , -.Dv Cards_8 , -.Dv Cards_9 , -.Dv Cards_10 , -.Dv Cards_J , -.Dv Cards_Q , -.Dv Cards_K . -.It Back -.Dv Cards_Back1 , -.Dv Cards_Back2 , -.Dv Cards_Back3 , -.Dv Cards_Back4 , -.Dv Cards_Back5 , -.Dv Cards_Back6 , -.Dv Cards_Back7 , -.Dv Cards_Back8 , -.Dv Cards_Back9 , -.Dv Cards_Back10 , -.Dv Cards_Back11 , -.Dv Cards_Back12 . -.It Other -.Dv Cards_Empty , -.Dv Cards_X , -.Dv Cards_O . -.El -. -.Pp -Where suit and rank constants -are added together to form an index. -Note that there are gaps in the indices -and some surface pointers will be set to -.Dv NULL . -The maximum number of surfaces -is defined by -.Dv Cards_CardCount . -. -.Pp -The dimensions of the loaded surfaces -are defined by -.Dv Cards_CardWidth -and -.Dv Cards_CardHeight . -. -.Pp -.Fn Cards_LoadCards -accepts the following flags: -.Bl -tag -width "Cards_BlackBorders" -offset indent -.It Dv Cards_ColorKey -Use color key transparency for the -.Dv Cards_Empty , -.Dv Cards_X -and -.Dv Cards_O -surfaces. -.It Dv Cards_AlphaCorners -Make the rounded card corners transparent. -.It Dv Cards_BlackBorders -Make all card borders black. -.El -. -.Pp -.Fn Cards_LoadFreeCell -loads bitmaps from a -.Pa FREECELL.EXE -file -.Fa rw . -. -.Pp -Indices of loaded surfaces -are defined by -.Dv Cards_KingRight , -.Dv Cards_KingLeft -and -.Dv Cards_KingWin . -Note that there are gaps in the indices -and some surface pointers will be set to -.Dv NULL . -The maximum number of surfaces -is defined by -.Dv Cards_FreeCellCount . -. -.Pp -The dimensions of the loaded surfaces -are defined by -.Dv Cards_KingWidth -and -.Dv Cards_KingHeight . -. -.Pp -.Fn Cards_LoadFreeCell -accepts the following flags: -.Bl -tag -width "Cards_ColorKey" -offset indent -.It Dv Cards_ColorKey -Use color key transparency. -.El -. -.Pp -.Fn Cards_InvertSurface -inverts the colors of a surface loaded by -.Fn Cards_LoadCards . -. -.Sh RETURN VALUES -Upon successful completion, -the value 0 is returned; -otherwise the value -1 is returned. -. -.Sh ERRORS -Error messages are set with -.Fn SDL_SetError -and can be retrieved with -.Fn SDL_GetError . -. -.Pp -.Fn Cards_LoadCards -and -.Fn Cards_LoadFreeCell -may fail for the following reasons: -any -.Vt SDL_RWops -or -.Vt SDL_Surface -error; -invalid MZ, NE or PE signatures; -missing resource table; -invalid resource hierarchy; -missing resource. -. -.Pp -.Fn Cards_InvertSurface -may fail for any -.Vt SDL_Surface -error -or if the surface format is not supported. -. -.Sh STANDARDS -.Bl -item -.It -The New Executable format, -documented in -.Pa exefmt.txt . -.It -The Portable Executable format, -documented at -.Lk https://docs.microsoft.com/en-us/windows/desktop/Debug/pe-format . -.El -. -.Sh AUTHORS -.An C. McEnroe Aq Mt june@causal.agency diff --git a/cards.c b/cards.c deleted file mode 100644 index ddc5b86..0000000 --- a/cards.c +++ /dev/null @@ -1,428 +0,0 @@ -/* Copyright (C) 2019 C. McEnroe <june@causal.agency> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <errno.h> -#include <stdlib.h> -#include <string.h> - -#include "cards.h" - -static SDL_Surface * -dibSurface(SDL_RWops *rw, Uint32 offset, Uint32 length) { - Uint32 bitmapLength = 0x0E + length; - - Uint8 *buffer = malloc(bitmapLength); - if (!buffer) { - SDL_SetError("malloc error: %s", strerror(errno)); - return NULL; - } - - SDL_RWops *bitmap = SDL_RWFromMem(buffer, bitmapLength); - if (!bitmap) { - free(buffer); - return NULL; - } - - if (SDL_RWseek(rw, offset, RW_SEEK_SET) < 0) goto fail; - Uint32 dibHeaderLength = SDL_ReadLE32(rw); - Uint32 bitmapDataOffset = 0x0E + dibHeaderLength; - - if (dibHeaderLength == 0x0C) { - if (SDL_RWseek(rw, 0x06, RW_SEEK_CUR) < 0) goto fail; - Uint16 bitsPerPixel = SDL_ReadLE16(rw); - bitmapDataOffset += 3 * (1 << bitsPerPixel); - - } else if (dibHeaderLength == 0x28) { - if (SDL_RWseek(rw, 0x0A, RW_SEEK_CUR) < 0) goto fail; - Uint16 bitsPerPixel = SDL_ReadLE16(rw); - if (SDL_RWseek(rw, 0x10, RW_SEEK_CUR) < 0) goto fail; - Uint32 paletteLength = SDL_ReadLE32(rw); - - if (!paletteLength && bitsPerPixel < 16) { - paletteLength = 1 << bitsPerPixel; - } - bitmapDataOffset += 4 * paletteLength; - - } else { - SDL_SetError("unrecognized DIB header length %u", dibHeaderLength); - goto fail; - } - - SDL_WriteU8(bitmap, 'B'); - SDL_WriteU8(bitmap, 'M'); - SDL_WriteLE32(bitmap, bitmapLength); - SDL_WriteLE16(bitmap, 0); // reserved - SDL_WriteLE16(bitmap, 0); // reserved - SDL_WriteLE32(bitmap, bitmapDataOffset); - - if (SDL_RWseek(rw, offset, RW_SEEK_SET) < 0) goto fail; - if (SDL_RWread(rw, &buffer[SDL_RWtell(bitmap)], length, 1) < 1) goto fail; - - SDL_RWseek(bitmap, 0, RW_SEEK_SET); - SDL_Surface *surface = SDL_LoadBMP_RW(bitmap, 1); - free(buffer); - return surface; - -fail: - SDL_RWclose(bitmap); - free(buffer); - return NULL; -} - -// exefmt.txt -static int -loadNE( - SDL_Surface **surfaces, size_t count, - SDL_RWops *rw, Uint16 neOffset, Uint32 idSkip -) { - if (SDL_RWseek(rw, neOffset + 0x24, RW_SEEK_SET) < 0) return -1; - Uint16 resourceTableOffset = neOffset + SDL_ReadLE16(rw); - - if (SDL_RWseek(rw, resourceTableOffset, RW_SEEK_SET) < 0) return -1; - Uint16 alignmentShift = SDL_ReadLE16(rw); - - Uint16 resourceCount; - for (;;) { - Uint16 typeID = SDL_ReadLE16(rw); - resourceCount = SDL_ReadLE16(rw); - SDL_ReadLE32(rw); // reserved - - if (!typeID) { - SDL_SetError("no bitmap resources"); - return -1; - } - if (typeID == 0x8002) break; - - if (SDL_RWseek(rw, 0x0C * resourceCount, RW_SEEK_CUR) < 0) return -1; - } - - for (Uint16 i = 0; i < resourceCount; ++i) { - Uint16 dataOffset = SDL_ReadLE16(rw); - Uint16 dataLength = SDL_ReadLE16(rw); - /* Uint16 flags = */ SDL_ReadLE16(rw); - Uint16 resourceID = SDL_ReadLE16(rw); - SDL_ReadLE32(rw); // reserved - - resourceID &= 0x7FFF; - if (resourceID >= idSkip) resourceID -= idSkip; - if (resourceID >= count) continue; - - Sint64 nextResource = SDL_RWtell(rw); - if (nextResource < 0) return -1; - - surfaces[resourceID] = dibSurface( - rw, - (Uint32)dataOffset << alignmentShift, - (Uint32)dataLength << alignmentShift - ); - if (!surfaces[resourceID]) return -1; - - if (SDL_RWseek(rw, nextResource, RW_SEEK_SET) < 0) return -1; - } - - return 0; -} - -// <https://docs.microsoft.com/en-us/windows/desktop/Debug/pe-format> -static int -loadPE( - SDL_Surface **surfaces, size_t count, - SDL_RWops *rw, Uint16 peOffset, Uint32 idSkip -) { - if (SDL_RWseek(rw, peOffset + 0x04 + 0x02, RW_SEEK_SET) < 0) return -1; - Uint16 sectionCount = SDL_ReadLE16(rw); - - if (SDL_RWseek(rw, peOffset + 0x04 + 0x10, RW_SEEK_SET) < 0) return -1; - Uint16 optionalHeaderLength = SDL_ReadLE16(rw); - Uint16 sectionTableOffset = peOffset + 0x04 + 0x14 + optionalHeaderLength; - - Uint32 resourceTableOffset = 0; - Uint32 resourceTableVirtual = 0; - for (Uint16 i = 0; i < sectionCount; ++i) { - Uint16 headerOffset = sectionTableOffset + 0x28 * i; - - if (SDL_RWseek(rw, headerOffset, RW_SEEK_SET) < 0) return -1; - char name[8]; - if (!SDL_RWread(rw, name, sizeof(name), 1)) return -1; - if (strncmp(".rsrc", name, sizeof(name))) continue; - - if (SDL_RWseek(rw, headerOffset + 0x0C, RW_SEEK_SET) < 0) return -1; - resourceTableVirtual = SDL_ReadLE32(rw); - - if (SDL_RWseek(rw, headerOffset + 0x14, RW_SEEK_SET) < 0) return -1; - resourceTableOffset = SDL_ReadLE32(rw); - - break; - } - if (!resourceTableOffset) { - SDL_SetError("no resource table"); - return -1; - } - - if (SDL_RWseek(rw, resourceTableOffset + 0x0C, RW_SEEK_SET) < 0) return -1; - Uint16 typeNameCount = SDL_ReadLE16(rw); - Uint16 typeIDCount = SDL_ReadLE16(rw); - - if (SDL_RWseek(rw, 0x08 * typeNameCount, RW_SEEK_CUR) < 0) return -1; - - Uint32 bitmapTableOffset = 0; - for (Uint16 i = 0; i < typeIDCount; ++i) { - Uint32 typeID = SDL_ReadLE32(rw); - Uint32 subdirOffset = SDL_ReadLE32(rw); - if (typeID != 0x02) continue; - if (!(subdirOffset & (1 << 31))) { - SDL_SetError("bitmap type entry does not point to table"); - return -1; - } - bitmapTableOffset = resourceTableOffset + (subdirOffset & ~(1 << 31)); - break; - } - - if (SDL_RWseek(rw, bitmapTableOffset + 0x0C, RW_SEEK_SET) < 0) return -1; - Uint16 nameNameCount = SDL_ReadLE16(rw); - Uint16 nameIDCount = SDL_ReadLE16(rw); - - if (SDL_RWseek(rw, 0x08 * nameNameCount, RW_SEEK_CUR) < 0) return -1; - - for (Uint16 i = 0; i < nameIDCount; ++i) { - Uint32 nameID = SDL_ReadLE32(rw); - if (nameID >= idSkip) nameID -= idSkip; - if (nameID >= count) continue; - - Uint32 subdirOffset = SDL_ReadLE32(rw); - if (!(subdirOffset & (1 << 31))) { - SDL_SetError("bitmap name entry does not point to table"); - return -1; - } - - Sint64 nextName = SDL_RWtell(rw); - if (nextName < 0) return -1; - - Uint32 langTableOffset = - resourceTableOffset + (subdirOffset & ~(1 << 31)); - - if (SDL_RWseek(rw, langTableOffset + 0x0C, RW_SEEK_SET) < 0) return -1; - Uint16 langNameCount = SDL_ReadLE16(rw); - Uint16 langIDCount = SDL_ReadLE16(rw); - if (langNameCount != 0 || langIDCount != 1) { - SDL_SetError("language table contains more than one entry"); - return -1; - } - - /* Uint32 langID = */ SDL_ReadLE32(rw); - Uint32 dataEntryOffset = SDL_ReadLE32(rw); - if (dataEntryOffset & (1 << 31)) { - SDL_SetError("language entry does not point to data"); - return -1; - } - dataEntryOffset += resourceTableOffset; - - if (SDL_RWseek(rw, dataEntryOffset, RW_SEEK_SET) < 0) return -1; - Uint32 dataVirtual = SDL_ReadLE32(rw); - Uint32 dataLength = SDL_ReadLE32(rw); - Uint32 dataOffset = - dataVirtual - (resourceTableVirtual - resourceTableOffset); - - surfaces[nameID] = dibSurface(rw, dataOffset, dataLength); - if (!surfaces[nameID]) return -1; - - if (SDL_RWseek(rw, nextName, RW_SEEK_SET) < 0) return -1; - } - - return 0; -} - -static int -loadEXE(SDL_Surface **surfaces, size_t count, SDL_RWops *rw, Uint32 idSkip) { - if (SDL_RWseek(rw, 0, RW_SEEK_SET) < 0) return -1; - if (SDL_ReadU8(rw) != 'M' || SDL_ReadU8(rw) != 'Z') { - SDL_SetError("invalid MZ signature"); - return -1; - } - - if (SDL_RWseek(rw, 0x3C, RW_SEEK_SET) < 0) return -1; - Uint16 offset = SDL_ReadLE16(rw); - - if (SDL_RWseek(rw, offset, RW_SEEK_SET) < 0) return -1; - Uint8 sig[2] = { SDL_ReadU8(rw), SDL_ReadU8(rw) }; - - if (sig[0] == 'N' && sig[1] == 'E') { - return loadNE(surfaces, count, rw, offset, idSkip); - } else if (sig[0] == 'P' && sig[1] == 'E') { - return loadPE(surfaces, count, rw, offset, idSkip); - } else { - SDL_SetError("invalid NE/PE signature"); - return -1; - } -} - -static int setColorKey(SDL_Surface **surfaces, size_t count) { - size_t i = Cards_Empty; - if (i < count) { - if (SDL_SetColorKey(surfaces[i], SDL_TRUE, 1) < 0) return -1; - } - for (i = Cards_X; i <= Cards_O; ++i) { - if (i >= count) break; - if (SDL_SetColorKey(surfaces[i], SDL_TRUE, 12) < 0) return -1; - } - return 0; -} - -static int setAlphaCorners(SDL_Surface **surfaces, size_t count) { - SDL_Surface *alpha = NULL; - for (size_t i = 0; i < count; ++i) { - if (!surfaces[i]) continue; - - alpha = SDL_ConvertSurfaceFormat(surfaces[i], SDL_PIXELFORMAT_RGBA32, 0); - if (!alpha) return -1; - - if (SDL_SetSurfaceBlendMode(alpha, SDL_BLENDMODE_BLEND) < 0) goto fail; - - SDL_Rect rects[8] = { - { 0, 0, 2, 1 }, - { 0, 1, 1, 1 }, - { Cards_CardWidth - 2, 0, 2, 1 }, - { Cards_CardWidth - 1, 1, 1, 1 }, - { 0, Cards_CardHeight - 1, 2, 1 }, - { 0, Cards_CardHeight - 2, 1, 1 }, - { Cards_CardWidth - 2, Cards_CardHeight - 1, 2, 1 }, - { Cards_CardWidth - 1, Cards_CardHeight - 2, 1, 1 }, - }; - Uint32 trans = SDL_MapRGBA(alpha->format, 0x00, 0x00, 0x00, 0x00); - if (SDL_FillRects(alpha, rects, 8, trans) < 0) goto fail; - - SDL_FreeSurface(surfaces[i]); - surfaces[i] = alpha; - } - return 0; - -fail: - SDL_FreeSurface(alpha); - return -1; -} - -static int setBlackBorders(SDL_Surface **surfaces, size_t count) { - for (size_t i = Cards_Diamond + Cards_A; i <= Cards_Heart + Cards_K; ++i) { - if (i >= count) break; - if (!surfaces[i]) continue; - SDL_Rect rects[8] = { - { 2, 0, Cards_CardWidth - 4, 1 }, - { 2, Cards_CardHeight - 1, Cards_CardWidth - 4, 1 }, - { 0, 2, 1, Cards_CardHeight - 4 }, - { Cards_CardWidth - 1, 2, 1, Cards_CardHeight - 4 }, - { 1, 1, 1, 1 }, - { Cards_CardWidth - 2, 1, 1, 1 }, - { 1, Cards_CardHeight - 2, 1, 1 }, - { Cards_CardWidth - 2, Cards_CardHeight - 2, 1, 1 }, - }; - Uint32 black = SDL_MapRGB(surfaces[i]->format, 0x00, 0x00, 0x00); - if (SDL_FillRects(surfaces[i], rects, 8, black) < 0) return -1; - } - return 0; -} - -static int -checkRange(SDL_Surface **surfaces, size_t count, size_t a, size_t b) { - for (size_t i = a; i <= b; ++i) { - if (i >= count) break; - if (surfaces[i]) continue; - SDL_SetError("missing resource %zu", i); - return -1; - } - return 0; -} - -int -Cards_LoadCards( - SDL_Surface *surfaces[], size_t count, - SDL_RWops *rw, enum Cards_Flag flags -) { - memset(surfaces, 0, sizeof(*surfaces) * count); - if (loadEXE(surfaces, count, rw, 0) < 0) return -1; - if (checkRange(surfaces, count, Cards_A, Cards_Back12) < 0) return -1; - if (checkRange(surfaces, count, Cards_X, Cards_O) < 0) return -1; - if (flags & Cards_ColorKey) { - if (setColorKey(surfaces, count) < 0) return -1; - } - if (flags & Cards_AlphaCorners) { - if (setAlphaCorners(surfaces, count) < 0) return -1; - } - if (flags & Cards_BlackBorders) { - if (setBlackBorders(surfaces, count) < 0) return -1; - } - return 0; -} - -int -Cards_LoadFreeCell( - SDL_Surface *surfaces[], size_t count, - SDL_RWops *rw, enum Cards_Flag flags -) { - memset(surfaces, 0, sizeof(*surfaces) * count); - if (loadEXE(surfaces, count, rw, 402) < 0) return -1; - if (checkRange(surfaces, count, Cards_KingRight, Cards_KingWin) < 0) { - return -1; - } - if (flags & Cards_ColorKey) { - for (size_t i = Cards_KingRight; i <= Cards_KingWin; ++i) { - if (i >= count) break; - if (SDL_SetColorKey(surfaces[i], SDL_TRUE, 2) < 0) return -1; - } - } - return 0; -} - -static int invertPalette(SDL_Surface *surface) { - const SDL_Palette *palette = surface->format->palette; - SDL_Palette *invert = SDL_AllocPalette(palette->ncolors); - if (!invert) return -1; - for (int i = 0; i < invert->ncolors; ++i) { - invert->colors[i].r = ~palette->colors[i].r; - invert->colors[i].g = ~palette->colors[i].g; - invert->colors[i].b = ~palette->colors[i].b; - invert->colors[i].a = palette->colors[i].a; - } - if (SDL_SetSurfacePalette(surface, invert) < 0) return -1; - SDL_FreePalette(invert); - return 0; -} - -static int invertPixels(SDL_Surface *surface) { - if (SDL_LockSurface(surface) < 0) return -1; - Uint8 *pixels = surface->pixels; - for (int y = 0; y < surface->h; ++y) { - Uint32 *row = (Uint32 *)&pixels[y * surface->pitch]; - for (int x = 0; x < surface->w; ++x) { - Uint32 color = ~row[x] & ~surface->format->Amask; - Uint32 alpha = row[x] & surface->format->Amask; - row[x] = color | alpha; - } - } - SDL_UnlockSurface(surface); - return 0; -} - -int Cards_InvertSurface(SDL_Surface *surface) { - if (surface->format->palette) { - if (invertPalette(surface) < 0) return -1; - } else if (surface->format->BytesPerPixel == 4) { - if (invertPixels(surface) < 0) return -1; - } else { - SDL_SetError("cannot invert surface format"); - return -1; - } - return 0; -} diff --git a/cards.h b/cards.h deleted file mode 100644 index 9625cb8..0000000 --- a/cards.h +++ /dev/null @@ -1,80 +0,0 @@ -/* Copyright (C) 2019 C. McEnroe <june@causal.agency> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#ifndef CARDS_H -#define CARDS_H - -#include <SDL_rwops.h> -#include <SDL_surface.h> -#include <stddef.h> - -enum { - Cards_CardWidth = 71, - Cards_CardHeight = 96, - Cards_KingWidth = 32, - Cards_KingHeight = 32, -}; - -enum Cards_Card { - Cards_Club, - Cards_Diamond = 13, - Cards_Heart = 26, - Cards_Spade = 39, - - // Add rank to suit to obtain card index. - Cards_A = 1, - Cards_2, Cards_3, Cards_4, Cards_5, Cards_6, Cards_7, Cards_8, Cards_9, - Cards_10, Cards_J, Cards_Q, Cards_K, - - Cards_Empty = 53, - Cards_Back1, Cards_Back2, Cards_Back3, Cards_Back4, - Cards_Back5, Cards_Back6, Cards_Back7, Cards_Back8, - Cards_Back9, Cards_Back10, Cards_Back11, Cards_Back12, - - Cards_X = 67, - Cards_O, - - Cards_CardCount, -}; - -enum Cards_FreeCell { - Cards_KingRight = 1, - Cards_KingLeft, - Cards_KingWin, - Cards_FreeCellCount, -}; - -enum Cards_Flag { - Cards_ColorKey = 1 << 0, - Cards_AlphaCorners = 1 << 1, - Cards_BlackBorders = 1 << 2, -}; - -int -Cards_LoadCards( - SDL_Surface *surfaces[], size_t count, - SDL_RWops *rw, enum Cards_Flag flags -); - -int -Cards_LoadFreeCell( - SDL_Surface *surfaces[], size_t count, - SDL_RWops *rw, enum Cards_Flag flags -); - -int Cards_InvertSurface(SDL_Surface *surface); - -#endif |