#include "global.h"
-/* ------------------------------------------------------------------------- */
-/* functions for loading Supaplex level */
-/* ------------------------------------------------------------------------- */
+// ----------------------------------------------------------------------------
+// functions for loading Supaplex level
+// ----------------------------------------------------------------------------
-void setTapeInfoToDefaults_SP()
+static void setTapeInfoToDefaults_SP(void)
{
native_sp_level.demo.is_available = FALSE;
native_sp_level.demo.length = 0;
}
-void setLevelInfoToDefaults_SP()
+void setLevelInfoToDefaults_SP(void)
{
LevelInfoType *header = &native_sp_level.header;
char *empty_title = "-------- EMPTY --------";
for (y = 0; y < native_sp_level.height; y++)
native_sp_level.playfield[x][y] = fiSpace;
- /* copy string (without terminating '\0' character!) */
+ // copy string (without terminating '\0' character!)
for (i = 0; i < SP_LEVEL_NAME_LEN; i++)
header->LevelTitle[i] = empty_title[i];
port->FreezeEnemies = 0;
}
- /* set raw header bytes (used for subsequent buffer zone) to "hardware" */
+ // set raw header bytes (used for subsequent buffer zone) to "hardware"
for (i = 0; i < SP_HEADER_SIZE; i++)
native_sp_level.header_raw_bytes[i] = 0x20;
setTapeInfoToDefaults_SP();
}
-void copyInternalEngineVars_SP()
+void copyInternalEngineVars_SP(void)
{
- char *preceding_playfield_memory[] =
- {
- "95 89 95 89 95 89 3b 8a 3b 8a 3b 8a 3b 8a 3b 8a", // |......;.;.;.;.;.|
- "3b 8a 3b 8a 3b 8a e8 8a e8 8a e8 8a e8 8a e8 8a", // |;.;.;.è.è.è.è.è.|
- "e8 8a e8 8a e8 8a b1 8b b1 8b b1 8b b1 8b b1 8b", // |è.è.è.±.±.±.±.±.|
- "b1 8b b1 8b b1 8b 85 8c 85 8c 85 8c 85 8c 85 8c", // |±.±.±...........|
- "85 8c 85 8c 85 8c 5b 8d 5b 8d 5b 8d 5b 8d 5b 8d", // |......[.[.[.[.[.|
- "5b 8d 5b 8d 5b 8d 06 8e 06 8e 06 8e 06 8e 06 8e", // |[.[.[...........|
- "06 8e 06 8e 06 8e ac 8e ac 8e ac 8e ac 8e ac 8e", // |......¬.¬.¬.¬.¬.|
- "ac 8e ac 8e ac 8e 59 8f 59 8f 59 8f 59 8f 59 8f", // |¬.¬.¬.Y.Y.Y.Y.Y.|
- "59 8f 59 8f 59 8f 00 00 70 13 00 00 00 00 e8 17", // |Y.Y.Y...p.....è.|
- "00 00 00 00 00 00 69 38 00 00 00 00 00 00 00 00", // |......i8........|
- "00 00 00 00 00 00 00 00 d0 86 00 00 b2 34 00 00", // |........Ð...²4..|
- "00 00 00 00 00 00 8f 8b 1d 34 00 00 00 00 00 00", // |.........4......|
- "00 00 00 00 23 39 09 09 00 0c 00 08 00 58 00 00", // |....#9.......X..|
- "00 00 00 25 77 06 7f 00 00 00 01 00 00 00 00 00", // |...%w...........|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 ec 06 26 05 00 00 00", // |.........ì.&....|
- "00 00 00 01 00 00 00 00 31 32 33 34 35 36 37 38", // |........12345678|
- "39 30 2d 00 08 00 51 57 45 52 54 59 55 49 4f 50", // |90-...QWERTYUIOP|
- "00 00 0a 00 41 53 44 46 47 48 4a 4b 4c 00 00 00", // |....ASDFGHJKL...|
- "00 00 5a 58 43 56 42 4e 4d 00 00 00 00 00 00 20", // |..ZXCVBNM...... |
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 2e 00 1e 00 31 00 14 00 39 00", // |..........1...9.|
- "1f 00 14 00 18 00 ff ff 01 00 01 4c 45 56 45 4c", // |......ÿÿ...LEVEL|
- "53 2e 44 41 54 00 00 00 00 00 00 00 00 00 00 00", // |S.DAT...........|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
- "00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00", // |................|
-
- NULL
- };
- int preceding_buffer_size = 0;
int count;
int i, x, y;
- for (i = 0; preceding_playfield_memory[i] != NULL; i++)
- preceding_buffer_size += 8; /* eight 16-bit integer values */
-
- /* needed for engine snapshots */
- game_sp.preceding_buffer_size = preceding_buffer_size;
-
LInfo = native_sp_level.header;
FieldWidth = native_sp_level.width;
FieldMax = (FieldWidth * FieldHeight) + HeaderSize - 1;
LevelMax = (FieldWidth * FieldHeight) - 1;
- /* (add one byte for the level number stored as first byte of demo data) */
- FileMax = FieldMax + native_sp_level.demo.length + 1;
+ // initialize preceding playfield buffer
+ for (i = -game_sp.preceding_buffer_size; i < 0; i++)
+ PlayField16[i] = 0;
- PlayField8 = REDIM_1D(sizeof(byte), 0, FileMax);
- DisPlayField = REDIM_1D(sizeof(byte), 0, FieldMax);
- PlayField16 = REDIM_1D(sizeof(int), -preceding_buffer_size, FieldMax);
+ // initialize preceding playfield buffer
+ for (i = -SP_MAX_PLAYFIELD_WIDTH; i < 0; i++)
+ PlayField8[i] = 0;
count = 0;
- for (i = 0; preceding_playfield_memory[i] != NULL; i++)
+ for (i = 0; game_sp.preceding_buffer[i] != NULL; i++)
{
- char *s = preceding_playfield_memory[i];
- boolean hi_byte = FALSE; /* little endian data => start with low byte */
+ char *s = game_sp.preceding_buffer[i];
+ boolean hi_byte = FALSE; // little endian data => start with low byte
while (s[0] != '\0' && s[1] != '\0')
{
if (hi_byte)
byte <<= 8;
- PlayField16[-preceding_buffer_size + count] |= byte;
+ PlayField16[-game_sp.preceding_buffer_size + count] |= byte;
if (hi_byte)
count++;
for (x = 0; x < native_sp_level.width; x++)
PlayField8[count++] = native_sp_level.playfield[x][y];
- /* add raw header bytes to subsequent playfield buffer zone */
+ // add raw header bytes to subsequent playfield buffer zone
for (i = 0; i < SP_HEADER_SIZE; i++)
PlayField8[count++] = native_sp_level.header_raw_bytes[i];
}
if (native_sp_level.demo.is_available)
- {
DemoAvailable = True;
- PlayField8[FieldMax + 1] = native_sp_level.demo.level_nr;
-
- for (i = 0; i < native_sp_level.demo.length; i++)
- PlayField8[FieldMax + 2 + i] = native_sp_level.demo.data[i];
- }
-
- AnimationPosTable = REDIM_1D(sizeof(int), 0, LevelMax - 2 * FieldWidth);
- AnimationSubTable = REDIM_1D(sizeof(byte), 0, LevelMax - 2 * FieldWidth);
- TerminalState = REDIM_1D(sizeof(byte), 0, FieldMax + 1 - 1);
-
GravityFlag = LInfo.InitialGravity;
FreezeZonks = LInfo.InitialFreezeZonks;
-#if 1
- /* this is set by main game tape code to native random generator directly */
-#else
- RandomSeed = LInfo.DemoRandomSeed;
-#endif
-
LevelLoaded = True;
+
+ // random seed set by main game tape code to native random generator seed
}
-static void LoadNativeLevelFromFileStream_SP(FILE *file, int width, int height,
+static void LoadNativeLevelFromFileStream_SP(File *file, int width, int height,
boolean demo_available)
{
LevelInfoType *header = &native_sp_level.header;
/* for details of the Supaplex level format, see Herman Perk's Supaplex
documentation file "SPFIX63.DOC" from his Supaplex "SpeedFix" package */
- native_sp_level.width = width;
- native_sp_level.height = height;
+ native_sp_level.width = MIN(width, SP_MAX_PLAYFIELD_WIDTH);
+ native_sp_level.height = MIN(height, SP_MAX_PLAYFIELD_HEIGHT);
- /* read level playfield (width * height == 60 * 24 tiles == 1440 bytes) */
- for (y = 0; y < native_sp_level.height; y++)
- for (x = 0; x < native_sp_level.width; x++)
- native_sp_level.playfield[x][y] = getFile8Bit(file);
+ // read level playfield (width * height == 60 * 24 tiles == 1440 bytes)
+ // (MPX levels may have non-standard playfield size -- check max. size)
+ for (y = 0; y < height; y++)
+ {
+ for (x = 0; x < width; x++)
+ {
+ byte element = getFile8Bit(file);
- /* read level header (96 bytes) */
+ if (x < SP_MAX_PLAYFIELD_WIDTH &&
+ y < SP_MAX_PLAYFIELD_HEIGHT)
+ native_sp_level.playfield[x][y] = element;
+ }
+ }
- ReadUnusedBytesFromFile(file, 4); /* (not used by Supaplex engine) */
+ // read level header (96 bytes)
- /* initial gravity: 1 == "on", anything else (0) == "off" */
+ ReadUnusedBytesFromFile(file, 4); // (not used by Supaplex engine)
+
+ // initial gravity: 1 == "on", anything else (0) == "off"
header->InitialGravity = getFile8Bit(file);
- /* SpeedFixVersion XOR 0x20 */
+ // SpeedFixVersion XOR 0x20
header->Version = getFile8Bit(file);
- /* level title in uppercase letters, padded with dashes ("-") (23 bytes) */
+ // level title in uppercase letters, padded with dashes ("-") (23 bytes)
for (i = 0; i < SP_LEVEL_NAME_LEN; i++)
header->LevelTitle[i] = getFile8Bit(file);
- /* initial "freeze zonks": 2 == "on", anything else (0, 1) == "off" */
+ // initial "freeze zonks": 2 == "on", anything else (0, 1) == "off"
header->InitialFreezeZonks = getFile8Bit(file);
/* number of infotrons needed; 0 means that Supaplex will count the total
(a multiple of 256 infotrons will result in "0 infotrons needed"!) */
header->InfotronsNeeded = getFile8Bit(file);
- /* number of special ("gravity") port entries below (maximum 10 allowed) */
+ // number of special ("gravity") port entries below (maximum 10 allowed)
header->SpecialPortCount = getFile8Bit(file);
- /* database of properties of up to 10 special ports (6 bytes per port) */
+ // database of properties of up to 10 special ports (6 bytes per port)
for (i = 0; i < SP_MAX_SPECIAL_PORTS; i++)
{
SpecialPortType *port = &header->SpecialPort[i];
the 16 bit value here calculates as 2 * (x + (y * 60)) (this is twice
of what may be expected: Supaplex works with a game field in memory
which is 2 bytes per tile) */
- port->PortLocation = getFile16BitBE(file); /* yes, big endian */
+ port->PortLocation = getFile16BitBE(file); // yes, big endian
- /* change gravity: 1 == "turn on", anything else (0) == "turn off" */
+ // change gravity: 1 == "turn on", anything else (0) == "turn off"
port->Gravity = getFile8Bit(file);
- /* "freeze zonks": 2 == "turn on", anything else (0, 1) == "turn off" */
+ // "freeze zonks": 2 == "turn on", anything else (0, 1) == "turn off"
port->FreezeZonks = getFile8Bit(file);
- /* "freeze enemies": 1 == "turn on", anything else (0) == "turn off" */
+ // "freeze enemies": 1 == "turn on", anything else (0) == "turn off"
port->FreezeEnemies = getFile8Bit(file);
- ReadUnusedBytesFromFile(file, 1); /* (not used by Supaplex engine) */
+ ReadUnusedBytesFromFile(file, 1); // (not used by Supaplex engine)
}
- /* SpeedByte XOR Highbyte(RandomSeed) */
+ // SpeedByte XOR Highbyte(RandomSeed)
header->SpeedByte = getFile8Bit(file);
- /* CheckSum XOR SpeedByte */
+ // CheckSum XOR SpeedByte
header->CheckSumByte = getFile8Bit(file);
- /* random seed used for recorded demos */
- header->DemoRandomSeed = getFile16BitLE(file); /* yes, little endian */
+ // random seed used for recorded demos
+ header->DemoRandomSeed = getFile16BitLE(file); // yes, little endian
- /* auto-determine number of infotrons if it was stored as "0" -- see above */
+ // auto-determine number of infotrons if it was stored as "0" -- see above
if (header->InfotronsNeeded == 0)
{
for (x = 0; x < native_sp_level.width; x++)
if (native_sp_level.playfield[x][y] == fiInfotron)
header->InfotronsNeeded++;
- header->InfotronsNeeded &= 0xff; /* only use low byte -- see above */
+ header->InfotronsNeeded &= 0xff; // only use low byte -- see above
}
- /* read raw level header bytes (96 bytes) */
+ // read raw level header bytes (96 bytes)
- fseek(file, -(SP_HEADER_SIZE), SEEK_CUR); /* rewind file */
+ seekFile(file, -(SP_HEADER_SIZE), SEEK_CUR); // rewind file
for (i = 0; i < SP_HEADER_SIZE; i++)
- native_sp_level.header_raw_bytes[i] = fgetc(file);
+ native_sp_level.header_raw_bytes[i] = getByteFromFile(file);
- /* also load demo tape, if available (only in single level files) */
+ // also load demo tape, if available (only in single level files)
if (demo_available)
{
int level_nr = getFile8Bit(file);
- level_nr &= 0x7f; /* clear highest bit */
+ level_nr &= 0x7f; // clear highest bit
level_nr = (level_nr < 1 ? 1 :
level_nr > 111 ? 111 : level_nr);
native_sp_level.demo.level_nr = level_nr;
- for (i = 0; i < SP_MAX_TAPE_LEN && !feof(file); i++)
+ for (i = 0; i < SP_MAX_TAPE_LEN && !checkEndOfFile(file); i++)
{
native_sp_level.demo.data[i] = getFile8Bit(file);
- if (native_sp_level.demo.data[i] == 0xff) /* "end of demo" byte */
- {
- i++;
-
+ if (native_sp_level.demo.data[i] == 0xff) // "end of demo" byte
break;
- }
}
+ if (i >= SP_MAX_TAPE_LEN)
+ Error(ERR_WARN, "SP demo truncated: size exceeds maximum SP demo size %d",
+ SP_MAX_TAPE_LEN);
+
native_sp_level.demo.length = i;
native_sp_level.demo.is_available = (native_sp_level.demo.length > 0);
}
}
-boolean LoadNativeLevel_SP(char *filename, int level_pos)
+boolean LoadNativeLevel_SP(char *filename, int level_pos,
+ boolean level_info_only)
{
- FILE *file;
+ File *file;
int i, l, x, y;
char name_first, name_last;
struct LevelInfo_SP multipart_level;
int level_width = SP_STD_PLAYFIELD_WIDTH;
int level_height = SP_STD_PLAYFIELD_HEIGHT;
- /* always start with reliable default values */
+ // always start with reliable default values
setLevelInfoToDefaults_SP();
copyInternalEngineVars_SP();
- if (!(file = fopen(filename, MODE_READ)))
+ if (!(file = openFile(filename, MODE_READ)))
{
- Error(ERR_WARN, "cannot open file '%s' -- using empty level", filename);
+ if (!level_info_only)
+ Error(ERR_WARN, "cannot open file '%s' -- using empty level", filename);
return FALSE;
}
ldesc->Width = getFile16BitLE(file);
ldesc->Height = getFile16BitLE(file);
- ldesc->OffSet = getFile32BitLE(file); /* starts with 1, not with 0 */
+ ldesc->OffSet = getFile32BitLE(file); // starts with 1, not with 0
ldesc->Size = getFile32BitLE(file);
}
file_seek_pos = mpx_level_desc[level_pos].OffSet - 1;
}
- /* position file stream to the requested level (in case of level package) */
- if (fseek(file, file_seek_pos, SEEK_SET) != 0)
+ // position file stream to the requested level (in case of level package)
+ if (seekFile(file, file_seek_pos, SEEK_SET) != 0)
{
Error(ERR_WARN, "cannot fseek in file '%s' -- using empty level", filename);
LoadNativeLevelFromFileStream_SP(file, level_width, level_height,
demo_available);
- /* check if this level is a part of a bigger multi-part level */
+ // check if this level is a part of a bigger multi-part level
if (is_single_level_file)
break;
if (is_multipart_level)
{
- /* correct leading multipart level meta information in level name */
+ // correct leading multipart level meta information in level name
for (i = 0;
i < SP_LEVEL_NAME_LEN && header->LevelTitle[i] == name_first;
i++)
header->LevelTitle[i] = '-';
- /* correct trailing multipart level meta information in level name */
+ // correct trailing multipart level meta information in level name
for (i = SP_LEVEL_NAME_LEN - 1;
i >= 0 && header->LevelTitle[i] == name_last;
i--)
header->LevelTitle[i] = '-';
}
- /* ---------- check for normal single level ---------- */
+ // ---------- check for normal single level ----------
if (!reading_multipart_level && !is_multipart_level)
{
break;
}
- /* ---------- check for empty level (unused multi-part) ---------- */
+ // ---------- check for empty level (unused multi-part) ----------
if (!reading_multipart_level && is_multipart_level && !is_first_part)
{
break;
}
- /* ---------- check for finished multi-part level ---------- */
+ // ---------- check for finished multi-part level ----------
if (reading_multipart_level &&
(!is_multipart_level ||
break;
}
- /* ---------- here we have one part of a multi-part level ---------- */
+ // ---------- here we have one part of a multi-part level ----------
reading_multipart_level = TRUE;
- if (is_first_part) /* start with first part of new multi-part level */
+ if (is_first_part) // start with first part of new multi-part level
{
- /* copy level info structure from first part */
+ // copy level info structure from first part
multipart_level = native_sp_level;
- /* clear playfield of new multi-part level */
+ // clear playfield of new multi-part level
for (x = 0; x < SP_MAX_PLAYFIELD_WIDTH; x++)
for (y = 0; y < SP_MAX_PLAYFIELD_HEIGHT; y++)
multipart_level.playfield[x][y] = fiSpace;
multipart_xpos = (int)(name_first - '0');
multipart_ypos = (int)(name_last - '0');
-#if 0
- printf("----------> part (%d/%d) of multi-part level '%s'\n",
- multipart_xpos, multipart_ypos, multipart_level.header.LevelTitle);
-#endif
-
if (multipart_xpos * SP_STD_PLAYFIELD_WIDTH > SP_MAX_PLAYFIELD_WIDTH ||
multipart_ypos * SP_STD_PLAYFIELD_HEIGHT > SP_MAX_PLAYFIELD_HEIGHT)
{
multipart_level.height = MAX(multipart_level.height,
multipart_ypos * SP_STD_PLAYFIELD_HEIGHT);
- /* copy level part at the right position of multi-part level */
+ // copy level part at the right position of multi-part level
for (x = 0; x < SP_STD_PLAYFIELD_WIDTH; x++)
{
for (y = 0; y < SP_STD_PLAYFIELD_HEIGHT; y++)
}
}
- fclose(file);
+ closeFile(file);
if (use_empty_level)
{
return;
}
- /* write level playfield (width * height == 60 * 24 tiles == 1440 bytes) */
+ // write level playfield (width * height == 60 * 24 tiles == 1440 bytes)
for (y = 0; y < native_sp_level.height; y++)
for (x = 0; x < native_sp_level.width; x++)
putFile8Bit(file, native_sp_level.playfield[x][y]);
- /* write level header (96 bytes) */
+ // write level header (96 bytes)
WriteUnusedBytesToFile(file, 4);
putFile8Bit(file, header->CheckSumByte);
putFile16BitLE(file, header->DemoRandomSeed);
- /* also save demo tape, if available */
+ // also save demo tape, if available
if (native_sp_level.demo.is_available)
{
for (i = 0; i < native_sp_level.demo.length; i++)
putFile8Bit(file, native_sp_level.demo.data[i]);
+
+ putFile8Bit(file, 0xff); // "end of demo" byte
}
fclose(file);
projects / rocksndiamonds.git / blobdiff