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authortruelight <truelight@openttd.org>2004-08-09 17:04:08 +0000
committertruelight <truelight@openttd.org>2004-08-09 17:04:08 +0000
commitefaeb275f78e18d594d9ee8ff04eccd2dc59512c (patch)
treebc8e1f56d77706d14d048cb2d99e53291930b520 /spritecache.c
downloadopenttd-efaeb275f78e18d594d9ee8ff04eccd2dc59512c.tar.xz
(svn r1) Import of revision 975 of old (crashed) SVN
Diffstat (limited to 'spritecache.c')
-rw-r--r--spritecache.c766
1 files changed, 766 insertions, 0 deletions
diff --git a/spritecache.c b/spritecache.c
new file mode 100644
index 000000000..3bcc68d4b
--- /dev/null
+++ b/spritecache.c
@@ -0,0 +1,766 @@
+#include "stdafx.h"
+#include "ttd.h"
+#include "gfx.h"
+#include "fileio.h"
+#include <ctype.h>
+
+#define SPRITECACHE_ID 0xF00F0006
+#define SPRITE_CACHE_SIZE 1024*1024
+
+
+//#define WANT_SPRITESIZES
+#define WANT_NEW_LRU
+//#define WANT_LOCKED
+
+
+int _skip_sprites = 0;
+
+static const char *_cur_grffile;
+static int _skip_specials;
+static SpriteHdr _cur_sprite;
+
+static byte *_sprite_ptr[NUM_SPRITES];
+static uint16 _sprite_size[NUM_SPRITES];
+static uint32 _sprite_file_pos[NUM_SPRITES];
+
+// This one is probably not needed.
+#if defined(WANT_LOCKED)
+static bool _sprite_locked[NUM_SPRITES];
+#endif
+
+#if defined(WANT_NEW_LRU)
+static int16 _sprite_lru_new[NUM_SPRITES];
+#else
+static uint16 _sprite_lru[NUM_SPRITES];
+static uint16 _sprite_lru_cur[NUM_SPRITES];
+#endif
+
+#ifdef WANT_SPRITESIZES
+static int8 _sprite_xoffs[NUM_SPRITES];
+static int8 _sprite_yoffs[NUM_SPRITES];
+static uint16 _sprite_xsize[NUM_SPRITES];
+static uint8 _sprite_ysize[NUM_SPRITES];
+#endif
+
+static uint _sprite_lru_counter;
+static byte *_spritecache_ptr;
+static uint32 _spritecache_size;
+static int _compact_cache_counter;
+
+
+static const char * const _filename_list[] = {
+ "TRG1R.GRF",
+ "TRGIR.GRF",
+ "signalsw.grf", //0x1320 - 0x1405 inclusive
+// "openttd.grf", //0x1406 -
+ NULL
+};
+
+static const char * const _landscape_filenames[] = {
+ "TRGCR.GRF",
+ "TRGHR.GRF",
+ "TRGTR.GRF"
+};
+
+
+#include "table/landscape_sprite.h"
+
+static const uint16 * const _landscape_spriteindexes[] = {
+ _landscape_spriteindexes_1,
+ _landscape_spriteindexes_2,
+ _landscape_spriteindexes_3,
+};
+
+static void CompactSpriteCache();
+
+void DecodeSpecialSprite(const char *filename, int num, int load_index);
+
+static void ReadSpriteHeaderSkipData(int num, int load_index)
+{
+ byte type;
+ int8 i;
+ int deaf = 0;
+
+ if (_skip_sprites) {
+ if (_skip_sprites > 0)
+ _skip_sprites--;
+ deaf = 1;
+ }
+
+ type = FioReadByte();
+ if (type == 0xFF) {
+ /* We need to really skip only special sprites in the deaf
+ * mode. It won't hurt to proceed regular sprites as usual
+ * because if no special sprite referencing to them is
+ * processed, they themselves are never referenced and loaded
+ * on their own. */
+ if (_skip_specials || deaf) {
+ FioSkipBytes(num);
+ } else {
+ DecodeSpecialSprite(_cur_grffile, num, load_index);
+ }
+ return;
+ }
+
+ _cur_sprite.info = type;
+#ifdef WANT_SPRITESIZES
+ _cur_sprite.height = FioReadByte();
+ _cur_sprite.width = FioReadWord();
+ _cur_sprite.x_offs = FioReadWord();
+ _cur_sprite.y_offs = FioReadWord();
+#else
+ FioSkipBytes(7);
+#endif
+ num -= 8;
+ if (num == 0)
+ return;
+
+ if (type & 2) {
+ FioSkipBytes(num);
+ return;
+ }
+
+ while (num) {
+ i = FioReadByte();
+ if (i>=0) {
+ num -= i;
+ FioSkipBytes(i);
+ } else {
+ i = -(i >> 3);
+ num -= i;
+ FioReadByte();
+ }
+ }
+}
+
+static void ReadSprite(int num, byte *dest)
+{
+ byte type;
+ byte *rel;
+ int8 i;
+ int j, dist;
+
+ type = FioReadByte();
+ /* We've decoded special sprites when reading headers. */
+ if (type != 0xFF) {
+ /* read sprite hdr */
+ *dest++ = type;
+ for(j=0; j!=7; j++)
+ *dest++ = FioReadByte();
+ num -= 8;
+ }
+
+ if (type & 2) {
+ while (num--)
+ *dest++ = FioReadByte();
+ return;
+ }
+
+ while (num) {
+ i = FioReadByte();
+ if (i>=0) {
+ num -= i;
+ while (i--)
+ *dest++ = FioReadByte();
+ } else {
+ dist = -(((i&7)<<8)|FioReadByte());
+ i = -(i >> 3);
+ num -= i;
+
+ rel = &dest[dist];
+ while (i--)
+ *dest++ = *rel++;
+ }
+ }
+}
+
+
+static bool LoadNextSprite(int load_index, byte file_index)
+{
+ uint16 size;
+
+ if ( (size = FioReadWord()) == 0)
+ return false;
+
+ _sprite_size[load_index] = size;
+ _sprite_file_pos[load_index] = FioGetPos() | (file_index << 24);
+
+ ReadSpriteHeaderSkipData(size, load_index);
+
+#ifdef WANT_SPRITESIZES
+ _sprite_xsize[load_index] = _cur_sprite.width;
+ _sprite_ysize[load_index] = _cur_sprite.height;
+
+ _sprite_xoffs[load_index] = _cur_sprite.x_offs;
+ _sprite_yoffs[load_index] = _cur_sprite.y_offs;
+#endif
+
+ _sprite_ptr[load_index] = NULL;
+#if defined(WANT_LOCKED)
+ _sprite_locked[load_index] = false;
+#endif
+
+#if defined(WANT_NEW_LRU)
+ _sprite_lru_new[load_index] = 0;
+#else
+ _sprite_lru[load_index] = 0xFFFF;
+ _sprite_lru_cur[load_index] = 0;
+#endif
+
+ return true;
+}
+
+// Checks, if trg1r.grf is the Windows version
+static bool CheckGrfFile()
+{
+ byte check;
+ FioSeekToFile(38); // Byte 38 has the value 0x21 in Windows version, 0x07 in DOS
+ check = FioReadWord();
+ FioSeekToFile(0);
+ return (check==0x21);
+}
+
+static int LoadGrfFile(const char *filename, int load_index, int file_index)
+{
+ int load_index_org = load_index;
+
+ FioOpenFile(file_index, filename);
+ _cur_grffile = filename;
+ _skip_specials = !strncmp(filename, "TRG", 3);
+
+ if(file_index==0 && !_ignore_wrong_grf)
+ if(!CheckGrfFile())
+ error("Wrong version of grf files!\nThe Windows 95 edition of Transport Tycoon Deluxe is required to play OTTD!\n(you can disable this message by starting with the \"-i\" switch.");
+
+ while (LoadNextSprite(load_index, file_index)) {
+ load_index++;
+ if (load_index >= NUM_SPRITES) {
+ error("Too many sprites. Recompile with higher NUM_SPRITES value or remove some custom GRF files.");
+ }
+ }
+
+ _skip_sprites = 0; // clean up
+
+ return load_index - load_index_org;
+}
+
+static void LoadGrfIndexed(const char *filename, const uint16 *index_tbl, int file_index)
+{
+ int start, end;
+
+ FioOpenFile(file_index, filename);
+
+ for(;(start=*index_tbl++) != 0xffff;) {
+ end = *index_tbl++;
+ do {
+ bool b = LoadNextSprite(start, file_index);
+ assert(b);
+ } while (++start <= end);
+ }
+}
+
+typedef size_t CDECL fread_t(void*,size_t,size_t,FILE*);
+
+static bool HandleCachedSpriteHeaders(const char *filename, bool read)
+{
+ FILE *f;
+ fread_t *proc;
+ uint32 hdr;
+
+ if (!_cache_sprites)
+ return false;
+
+ if (read) {
+ f = fopen(filename, "rb");
+ proc = fread;
+
+ if (f == NULL)
+ return false;
+
+ proc(&hdr, sizeof(hdr), 1, f);
+ if (hdr != SPRITECACHE_ID) {
+ fclose(f);
+ return false;
+ }
+ } else {
+ f = fopen(filename, "wb");
+ proc = (fread_t*) fwrite;
+
+ if (f == NULL)
+ return false;
+
+ hdr = SPRITECACHE_ID;
+ proc(&hdr, sizeof(hdr), 1, f);
+ }
+
+ proc(_sprite_size, 1, sizeof(_sprite_size), f);
+ proc(_sprite_file_pos, 1, sizeof(_sprite_file_pos), f);
+
+#if 0
+ proc(_sprite_xsize, 1, sizeof(_sprite_xsize), f);
+ proc(_sprite_ysize, 1, sizeof(_sprite_ysize), f);
+ proc(_sprite_xoffs, 1, sizeof(_sprite_xoffs), f);
+ proc(_sprite_yoffs, 1, sizeof(_sprite_yoffs), f);
+#endif
+
+#if !defined(WANT_NEW_LRU)
+ if (read)
+ memset(_sprite_lru, 0xFF, sizeof(_sprite_lru));
+#endif
+
+ fclose(f);
+ return true;
+}
+
+#define S_DATA(x) (*(uint32*)(x))
+#define S_FREE_MASK 1
+#define S_HDRSIZE sizeof(uint32)
+
+static uint32 GetSpriteCacheUsage()
+{
+ byte *s = _spritecache_ptr;
+ size_t cur_size, tot_size = 0;
+ for(; (cur_size=S_DATA(s)) != 0; s+=cur_size) {
+ if ( cur_size & S_FREE_MASK ) {
+ cur_size--;
+ } else {
+ tot_size += cur_size;
+ }
+ }
+
+ return tot_size;
+}
+
+
+void IncreaseSpriteLRU()
+{
+ int i;
+
+ // Increase all LRU values
+#if defined(WANT_NEW_LRU)
+ if (_sprite_lru_counter > 16384) {
+ DEBUG(spritecache, 2) ("fixing lru %d, inuse=%d", _sprite_lru_counter, GetSpriteCacheUsage());
+
+ for(i=0; i!=NUM_SPRITES; i++)
+ if (_sprite_ptr[i] != NULL) {
+ if (_sprite_lru_new[i] >= 0) {
+ _sprite_lru_new[i] = -1;
+ } else if (_sprite_lru_new[i] != -32768) {
+ _sprite_lru_new[i]--;
+ }
+ }
+ _sprite_lru_counter = 0;
+ }
+#else
+ for(i=0; i!=NUM_SPRITES; i++)
+ if (_sprite_ptr[i] != NULL && _sprite_lru[i] != 65535)
+ _sprite_lru[i]++;
+ // Reset the lru counter.
+ _sprite_lru_counter = 0;
+#endif
+
+ // Compact sprite cache every now and then.
+ if (++_compact_cache_counter >= 740) {
+ CompactSpriteCache();
+ _compact_cache_counter = 0;
+ }
+}
+
+// Called when holes in the sprite cache should be removed.
+// That is accomplished by moving the cached data.
+static void CompactSpriteCache()
+{
+ byte *s, *t;
+ size_t size, sizeb, cur_size;
+ int i;
+
+ DEBUG(spritecache, 2) ("compacting sprite cache, inuse=%d", GetSpriteCacheUsage());
+
+ s = _spritecache_ptr;
+
+ while (true) {
+ size = S_DATA(s);
+
+ // Only look for free blocks.
+ if (size & S_FREE_MASK) {
+ size -= S_FREE_MASK;
+ // Since free blocks are automatically coalesced, this should hold true.
+ assert(!(S_DATA(s+size) & S_FREE_MASK));
+
+ // If the next block is the sentinel block, we can safely return
+ if ( (sizeb=S_DATA(s + size)) == 0)
+ break;
+
+ // Locate the sprite number belonging to the next pointer.
+ for(i=0,t=s+size+S_HDRSIZE; _sprite_ptr[i] != t; i++) {assert(i < NUM_SPRITES);}
+
+ // If it's locked, we must not move it.
+#if defined(WANT_LOCKED)
+ if (!_sprite_locked[i]) {
+#endif
+
+ // Offset the sprite pointer by the size of the free block
+ _sprite_ptr[i] -= size;
+
+ // Move the memory
+ memcpy_overlapping(s+S_HDRSIZE, s+S_HDRSIZE+size, sizeb - S_HDRSIZE );
+
+ // What we just did had the effect of swapping the allocated block with the free block, so we need to update
+ // the block pointers. First update the allocated one. It is in use.
+ S_DATA(s) = sizeb;
+
+ // Then coalesce the free ones that follow.
+ s += sizeb;
+ while ((cur_size = S_DATA(s+size)) & S_FREE_MASK)
+ size += cur_size - S_FREE_MASK;
+ S_DATA(s) = size + S_FREE_MASK;
+ continue;
+#if defined(WANT_LOCKED)
+ }
+#endif
+ }
+ // Continue with next block until the sentinel is reached.
+ s += size;
+ if (size == 0)
+ break;
+ }
+}
+
+static void DeleteEntryFromSpriteCache()
+{
+ int i;
+ int best = -1;
+ byte *s;
+ size_t cur_size, cur;
+ int cur_lru;
+
+ DEBUG(spritecache, 2) ("DeleteEntryFromSpriteCache, inuse=%d", GetSpriteCacheUsage());
+
+#if defined(WANT_NEW_LRU)
+ cur_lru = 0xffff;
+ for(i=0; i!=NUM_SPRITES; i++) {
+ if (_sprite_ptr[i] != 0 &&
+ _sprite_lru_new[i] < cur_lru
+#if defined(WANT_LOCKED)
+ && !_sprite_locked[i]) {
+#else
+ ) {
+#endif
+ cur_lru = _sprite_lru_new[i];
+ best = i;
+ }
+ }
+#else
+ {
+ uint16 cur_lru = 0, cur_lru_cur = 0xffff;
+ for(i=0; i!=NUM_SPRITES; i++) {
+ if (_sprite_ptr[i] == 0 ||
+#if defined(WANT_LOCKED)
+ _sprite_locked[i] ||
+#endif
+ _sprite_lru[i] < cur_lru)
+ continue;
+
+ // Found a sprite with a higher LRU value, then remember it.
+ if (_sprite_lru[i] != cur_lru) {
+ cur_lru = _sprite_lru[i];
+ best = i;
+
+ // Else if both sprites were very recently referenced, compare by the cur value instead.
+ } else if (cur_lru == 0 && _sprite_lru_cur[i] <= cur_lru_cur) {
+ cur_lru_cur = _sprite_lru_cur[i];
+ cur_lru = _sprite_lru[i];
+ best = i;
+ }
+ }
+ }
+#endif
+
+ // Display an error message and die, in case we found no sprite at all.
+ // This shouldn't really happen, unless all sprites are locked.
+ if (best == -1)
+ error("Out of sprite memory");
+
+ // Mark the block as free (the block must be in use)
+ s = _sprite_ptr[best];
+ assert(!(S_DATA(s - S_HDRSIZE) & S_FREE_MASK));
+ S_DATA(s - S_HDRSIZE) += S_FREE_MASK;
+ _sprite_ptr[best] = NULL;
+
+ // And coalesce adjacent free blocks
+ s = _spritecache_ptr;
+ for(; (cur_size=S_DATA(s)) != 0; s+=cur_size) {
+ if ( cur_size & S_FREE_MASK ) {
+ while ((cur=S_DATA(s+cur_size-S_FREE_MASK)) & S_FREE_MASK) {
+ cur_size += cur - S_FREE_MASK;
+ S_DATA(s) = cur_size;
+ }
+ cur_size--;
+ }
+ }
+}
+
+static byte *LoadSpriteToMem(int sprite)
+{
+ byte *s;
+ size_t mem_req, cur_size;
+
+ DEBUG(spritecache, 9) ("load sprite %d", sprite);
+
+restart:
+ // Number of needed bytes
+ mem_req = _sprite_size[sprite] + S_HDRSIZE;
+
+ // Align this to an uint32 boundary. This also makes sure that the 2 least bit are not used,
+ // so we could use those for other things.
+ mem_req = (mem_req + sizeof(uint32) - 1) & ~(sizeof(uint32) - 1);
+
+ s = _spritecache_ptr;
+ for(;;) {
+ for(;;) {
+ cur_size = S_DATA(s);
+ if (! (cur_size & S_FREE_MASK) ) break;
+
+ cur_size -= S_FREE_MASK;
+
+ // Now s points at a free block.
+ // The block is exactly the size we need?
+ if (cur_size != mem_req) {
+
+ // No.. is it too small?
+ if (cur_size < mem_req + S_HDRSIZE)
+ break;
+
+ // Block was big enough, and we need to inject a free block too.
+ S_DATA(s + mem_req) = cur_size - mem_req + S_FREE_MASK;
+
+ }
+ // Set size and in use
+ S_DATA(s) = mem_req;
+
+ _sprite_ptr[sprite] = (s += S_HDRSIZE);
+
+ FioSeekToFile(_sprite_file_pos[sprite]);
+ ReadSprite(_sprite_size[sprite], s);
+
+ // Patch the height to compensate for a TTD bug?
+ if (sprite == 142) { s[1] = 10; }
+
+ // Return sprite ptr
+ return s;
+ }
+
+ // Reached sentinel, but no block found yet. Need to delete some old entries.
+ if (cur_size == 0) {
+ DeleteEntryFromSpriteCache();
+ goto restart;
+ }
+
+ s += cur_size;
+ }
+}
+
+#if defined(NEW_ROTATION)
+#define X15(x) else if (s >= x && s < (x+15)) { s = _rotate_tile_sprite[s - x] + x; }
+#define X19(x) else if (s >= x && s < (x+19)) { s = _rotate_tile_sprite[s - x] + x; }
+#define MAP(from,to,map) else if (s >= from && s <= to) { s = map[s - from] + from; }
+
+
+uint RotateSprite(uint s)
+{
+ static const byte _rotate_tile_sprite[19] = { 0,2,4,6,8,10,12,14,1,3,5,7,9,11,13,17,18,16,15 };
+ static const byte _coast_map[9] = {0, 4, 3, 1, 2, 6, 8, 5, 7};
+ static const byte _fence_map[6] = {1, 0, 5, 4, 3, 2};
+
+ if (0);
+ X19(752)
+ X15(990-1)
+ X19(3924)
+ X19(3943)
+ X19(3962)
+ X19(3981)
+ X19(4000)
+ X19(4023)
+ X19(4042)
+ MAP(4061,4069,_coast_map)
+ X19(4126)
+ X19(4145)
+ X19(4164)
+ X19(4183)
+ X19(4202)
+ X19(4221)
+ X19(4240)
+ X19(4259)
+ X19(4259)
+ X19(4278)
+ MAP(4090, 4095, _fence_map)
+ MAP(4096, 4101, _fence_map)
+ MAP(4102, 4107, _fence_map)
+ MAP(4108, 4113, _fence_map)
+ MAP(4114, 4119, _fence_map)
+ MAP(4120, 4125, _fence_map)
+ return s;
+}
+#endif
+
+byte *GetSpritePtr(uint sprite)
+{
+ byte *p;
+
+ assert(sprite < NUM_SPRITES);
+
+#if defined(NEW_ROTATION)
+ sprite = RotateSprite(sprite);
+#endif
+
+ // Update LRU
+#if defined(WANT_NEW_LRU)
+ _sprite_lru_new[sprite] = ++_sprite_lru_counter;
+#else
+ _sprite_lru_cur[sprite] = ++_sprite_lru_counter;
+ _sprite_lru[sprite] = 0;
+#endif
+
+ // Check if the sprite is loaded already?
+ p = _sprite_ptr[sprite];
+ if (p == NULL)
+ p = LoadSpriteToMem(sprite); // No, need to load it.
+ return p;
+}
+
+byte _sprite_page_to_load = 0xFF;
+
+static const char * const _cached_filenames[4] = {
+ "cached_sprites.xxx",
+ "cached_sprites.xx1",
+ "cached_sprites.xx2",
+ "cached_sprites.xx3",
+};
+
+static const uint16 _openttd_grf_indexes[] = {
+ SPR_OPENTTD_BASE+0, SPR_OPENTTD_BASE+7, // icons etc
+ 98,98, // euro symbol medium size
+ 546,546, // euro symbol large size
+ SPR_OPENTTD_BASE+10, SPR_OPENTTD_BASE+57, // more icons
+ 648, 648, // nordic char: æ
+ 616, 616, // nordic char: Æ
+ 666, 666, // nordic char: Ø
+ 634, 634, // nordic char: Ø
+ SPR_OPENTTD_BASE+62, SPR_OPENTTD_BASE+70, // more icons
+ 0xffff,
+};
+
+static void LoadSpriteTables()
+{
+ int i,j;
+
+ /* load initial sprites */
+ if (!HandleCachedSpriteHeaders(_cached_filenames[_opt.landscape], true)) {
+
+ int load_index = 0;
+ for(i=0; _filename_list[i] != NULL; i++) {
+ load_index += LoadGrfFile(_filename_list[i], load_index, (byte)i);
+ }
+
+ LoadGrfIndexed("openttd.grf", _openttd_grf_indexes, i++);
+
+ {
+ int l;
+ if ((l=_sprite_page_to_load) != 0)
+ LoadGrfIndexed(_landscape_filenames[l-1], _landscape_spriteindexes[l-1], i++);
+ }
+
+ load_index = SPR_CANALS_BASE;
+ load_index += LoadGrfFile("canalsw.grf", load_index, i++);
+ /* XXX: Only for debugging. Will be more generic. */
+
+ for(j=0; j!=lengthof(_newgrf_files) && _newgrf_files[j]; j++)
+ load_index += LoadGrfFile(_newgrf_files[j], load_index, i++);
+
+// load_index += LoadGrfFile("arcticseto.grf", load_index, i++);
+// load_index += LoadGrfFile("tempsetpo.grf", load_index, i++);
+// load_index += LoadGrfFile("newshipso.grf", load_index, i++);
+ //load_index += LoadGrfFile("brseto.grf", load_index, i++);
+
+ HandleCachedSpriteHeaders(_cached_filenames[_opt.landscape], false);
+ } else {
+ for(i=0; _filename_list[i] != NULL; i++)
+ FioOpenFile(i,_filename_list[i]);
+
+ FioOpenFile(i, "openttd.grf");
+ FioOpenFile(i+1, "canalsw.grf");
+
+ if (_sprite_page_to_load != 0)
+ FioOpenFile(i+2, _landscape_filenames[_sprite_page_to_load-1]);
+ }
+
+ _compact_cache_counter = 0;
+}
+
+void GfxInitSpriteMem(byte *ptr, uint32 size)
+{
+ // initialize sprite cache heap
+ _spritecache_ptr = ptr;
+ _spritecache_size = size;
+
+ // Sentinel block (identified by size=0)
+ S_DATA(ptr + size - S_HDRSIZE) = 0;
+ // A big free block
+ S_DATA(ptr) = size - S_HDRSIZE + S_FREE_MASK;
+
+ memset(_sprite_ptr, 0, sizeof(_sprite_ptr));
+}
+
+
+void GfxLoadSprites() {
+ static byte *_sprite_mem;
+
+ // Need to reload the sprites only if the landscape changed
+ if (_sprite_page_to_load != _opt.landscape) {
+ _sprite_page_to_load = _opt.landscape;
+
+ // Sprite cache
+ DEBUG(spritecache, 1) ("Loading sprite set %d.", _sprite_page_to_load);
+
+ // Reuse existing memory?
+ if (_sprite_mem == NULL) _sprite_mem = malloc(SPRITE_CACHE_SIZE);
+ GfxInitSpriteMem(_sprite_mem, SPRITE_CACHE_SIZE);
+ LoadSpriteTables();
+ GfxInitPalettes();
+ }
+}
+
+
+const SpriteDimension *GetSpriteDimension(uint sprite)
+{
+ static SpriteDimension sd_static;
+ SpriteDimension *sd;
+
+#ifndef WANT_SPRITESIZES
+ byte *p;
+
+ p = _sprite_ptr[sprite];
+ if (p == NULL)
+ p = GetSpritePtr(sprite);
+
+ /* decode sprite header */
+ sd = &sd_static;
+ sd->xoffs = (int16)READ_LE_UINT16(&((SpriteHdr*)p)->x_offs);
+ sd->yoffs = (int16)READ_LE_UINT16(&((SpriteHdr*)p)->y_offs);
+ sd->xsize = READ_LE_UINT16(&((SpriteHdr*)p)->width);
+ sd->ysize = ((SpriteHdr*)p)->height;
+#else
+ sd = &sd_static;
+ sd->xoffs = _sprite_xoffs[sprite];
+ sd->yoffs = _sprite_yoffs[sprite];
+ sd->xsize = _sprite_xsize[sprite];
+ sd->ysize = _sprite_ysize[sprite];
+#endif
+/* sd->xoffs = _sprite_xoffs[sprite];
+ sd->yoffs = _sprite_yoffs[sprite];
+ sd->xsize = _sprite_xsize[sprite];
+ sd->ysize = _sprite_ysize[sprite];
+*/
+ return sd;
+}
+