/**
* Save a chunk of data.
* @param fp The file to save to.
* @param header The chunk identification string (4 chars, always).
* @param saveProc The proc to call to generate the content of the chunk.
* @return True if and only if all bytes were written successful.
*/
static bool Save_Chunk(FILE *fp, char *header, bool (*saveProc)(FILE *fp))
{
uint32 position;
uint32 length;
uint32 lengthSwapped;
if (fwrite(header, 4, 1, fp) != 1) return false;
/* Reserve the length field */
length = 0;
if (fwrite(&length, 4, 1, fp) != 1) return false;
/* Store the content of the chunk, and remember the length */
position = ftell(fp);
if (!saveProc(fp)) return false;
length = ftell(fp) - position;
/* Ensure we are word aligned */
if ((length & 1) == 1) {
uint8 empty = 0;
if (fwrite(&empty, 1, 1, fp) != 1) return false;
}
/* Write back the chunk size */
fseek(fp, position - 4, SEEK_SET);
lengthSwapped = HTOBE32(length);
if (fwrite(&lengthSwapped, 4, 1, fp) != 1) return false;
fseek(fp, 0, SEEK_END);
return true;
}
static void FillSavegameDesc(bool save)
{
uint8 i;
for (i = 0; i < 5; i++) {
char *desc = g_savegameDesc[i];
char *filename;
uint8 fileId;
*desc = '\0';
if (s_savegameIndexBase - i < 0) continue;
if (s_savegameIndexBase - i == s_savegameCountOnDisk) {
if (!save) continue;
strncpy(desc, String_Get_ByIndex(STR_EMPTY_SLOT_), 50);
continue;
}
filename = GenerateSavegameFilename(s_savegameIndexBase - i);
if (!File_Exists(filename)) continue;
fileId = ChunkFile_Open(filename);
ChunkFile_Read(fileId, HTOBE32(CC_NAME), desc, 50);
ChunkFile_Close(fileId);
continue;
}
}
/**
* Seek to the given chunk inside a chunk file.
*
* @param index The index given by ChunkFile_Open() of the file.
* @param chunk The chunk to seek to.
* @return The length of the chunk (0 if not found).
*/
uint32 ChunkFile_Seek(uint8 index, uint32 chunk)
{
uint32 value = 0;
uint32 length = 0;
bool first = true;
while (true) {
if (File_Read(index, &value, 4) != 4 && !first) return 0;
if (value == 0 && File_Read(index, &value, 4) != 4 && !first) return 0;
if (File_Read(index, &length, 4) != 4 && !first) return 0;
length = HTOBE32(length);
if (value == chunk) {
File_Seek(index, -8, 1);
return length;
}
if (first) {
File_Seek(index, 12, 0);
first = false;
continue;
}
length += 1;
length &= 0xFFFFFFFE;
File_Seek(index, length, 1);
}
}
void
psbuf_put_4(struct puffs_framebuf *pb, uint32_t val)
{
int rv;
HTOBE32(val);
rv = puffs_framebuf_putdata(pb, &val, 4);
CHECK(rv == 0);
}
/**
* Save the game for real. It creates all the required chunks and stores them
* to the file. It updates the field lengths where needed.
*
* @param fp The file to save to.
* @param description The description of the savegame.
* @return True if and only if all bytes were written successful.
*/
static bool Save_Main(FILE *fp, char *description)
{
uint32 length;
uint32 lengthSwapped;
/* Write the 'FORM' chunk (in which all other chunks are) */
if (fwrite("FORM", 4, 1, fp) != 1) return false;
/* Write zero length for now. We come back to this value before closing */
length = 0;
if (fwrite(&length, 4, 1, fp) != 1) return false;
/* Write the 'SCEN' chunk. Never contains content. */
if (fwrite("SCEN", 4, 1, fp) != 1) return false;
/* Write the 'NAME' chunk. Keep ourself word-aligned. */
if (fwrite("NAME", 4, 1, fp) != 1) return false;
length = min(255, strlen(description) + 1);
lengthSwapped = HTOBE32(length);
if (fwrite(&lengthSwapped, 4, 1, fp) != 1) return false;
if (fwrite(description, length, 1, fp) != 1) return false;
/* Ensure we are word aligned */
if ((length & 1) == 1) {
uint8 empty = 0;
if (fwrite(&empty, 1, 1, fp) != 1) return false;
}
/* Store all additional chunks */
if (!Save_Chunk(fp, "INFO", &Info_Save)) return false;
if (!Save_Chunk(fp, "PLYR", &House_Save)) return false;
if (!Save_Chunk(fp, "UNIT", &Unit_Save)) return false;
if (!Save_Chunk(fp, "BLDG", &Structure_Save)) return false;
if (!Save_Chunk(fp, "MAP ", &Map_Save)) return false;
if (!Save_Chunk(fp, "TEAM", &Team_Save)) return false;
/* Write the total length of all data in the FORM chunk */
length = ftell(fp) - 8;
fseek(fp, 4, SEEK_SET);
lengthSwapped = HTOBE32(length);
if (fwrite(&lengthSwapped, 4, 1, fp) != 1) return false;
return true;
}
static void GUI_Mentat_LoadHelpSubjects(bool init)
{
static uint8 *helpDataList = NULL;
uint8 fileID;
uint32 length;
uint32 counter;
uint8 *helpSubjects;
uint16 i;
if (init) {
helpDataList = GFX_Screen_Get_ByIndex(SCREEN_1);
s_topHelpList = 0;
s_selectedHelpSubject = 0;
sprintf(s_mentatFilename, "MENTAT%c", g_table_houseInfo[g_playerHouseID].name[0]);
strncpy(s_mentatFilename, String_GenerateFilename(s_mentatFilename), sizeof(s_mentatFilename));
}
fileID = ChunkFile_Open(s_mentatFilename);
length = ChunkFile_Read(fileID, HTOBE32(CC_NAME), helpDataList, GFX_Screen_GetSize_ByIndex(SCREEN_1));
ChunkFile_Close(fileID);
s_numberHelpSubjects = 0;
helpSubjects = helpDataList;
counter = 0;
while (counter < length) {
uint8 size = *helpSubjects;
counter += size;
if (helpSubjects[size - 1] > g_campaignID + 1) {
while (size-- != 0) *helpSubjects++ = '\0';
continue;
}
helpSubjects[size - 1] = size;
helpSubjects += size;
s_numberHelpSubjects++;
}
helpSubjects = helpDataList;
while (*helpSubjects == '\0') helpSubjects++;
for (i = 0; i < s_topHelpList; i++) helpSubjects = String_NextString(helpSubjects);
s_helpSubjects = helpSubjects;
}
/**
* Open a chunk file (starting with FORM) for reading.
*
* @param filename The name of the file to open.
* @return An index value refering to the opened file, or FILE_INVALID.
*/
uint8 ChunkFile_Open(const char *filename)
{
uint8 index;
uint32 header;
index = File_Open(filename, 1);
File_Close(index);
index = File_Open(filename, 1);
File_Read(index, &header, 4);
if (header != HTOBE32('FORM')) {
File_Close(index);
return FILE_INVALID;
}
File_Seek(index, 4, 1);
return index;
}
/**
* Read bytes from a chunk file into a buffer.
*
* @param index The index given by ChunkFile_Open() of the file.
* @param chunk The chunk to read from.
* @param buffer The buffer to read into.
* @param length The amount of bytes to read.
* @return The amount of bytes truly read, or 0 if there was a failure.
*/
uint32 ChunkFile_Read(uint8 index, uint32 chunk, void *buffer, uint32 buflen)
{
uint32 value = 0;
uint32 length = 0;
bool first = true;
while (true) {
if (File_Read(index, &value, 4) != 4 && !first) return 0;
if (value == 0 && File_Read(index, &value, 4) != 4 && !first) return 0;
if (File_Read(index, &length, 4) != 4 && !first) return 0;
length = HTOBE32(length);
if (value == chunk) {
buflen = min(buflen, length);
File_Read(index, buffer, buflen);
length += 1;
length &= 0xFFFFFFFE;
if (buflen < length) File_Seek(index, length - buflen, 1);
return buflen;
}
if (first) {
File_Seek(index, 12, 0);
first = false;
continue;
}
length += 1;
length &= 0xFFFFFFFE;
File_Seek(index, length, 1);
}
}
static void GUI_Mentat_ShowHelp(void)
{
struct {
uint8 notused[8];
uint32 length;
} info;
uint8 *subject;
uint16 i;
bool noDesc;
uint8 fileID;
uint32 offset;
char *compressedText;
char *desc;
char *picture;
char *text;
bool loc12;
subject = s_helpSubjects;
for (i = 0; i < s_selectedHelpSubject; i++) subject = String_NextString(subject);
noDesc = (subject[5] == '0');
offset = HTOBE32(*(uint32 *)(subject + 1));
fileID = ChunkFile_Open(s_mentatFilename);
ChunkFile_Read(fileID, HTOBE32(CC_INFO), &info, 12);
ChunkFile_Close(fileID);
info.length = HTOBE32(info.length);
text = g_readBuffer;
compressedText = GFX_Screen_Get_ByIndex(SCREEN_1);
fileID = File_Open(s_mentatFilename, FILE_MODE_READ);
File_Seek(fileID, offset, 0);
File_Read(fileID, compressedText, info.length);
String_Decompress(compressedText, text);
String_TranslateSpecial(text, text);
File_Close(fileID);
while (*text != '*' && *text != '?') text++;
loc12 = (*text == '*');
*text++ = '\0';
if (noDesc) {
uint16 index;
picture = g_scenario.pictureBriefing;
desc = NULL;
text = (char *)g_readBuffer;
index = *text - 44 + g_campaignID * 4 + STR_HOUSE_HARKONNENFROM_THE_DARK_WORLD_OF_GIEDI_PRIME_THE_SAVAGE_HOUSE_HARKONNEN_HAS_SPREAD_ACROSS_THE_UNIVERSE_A_CRUEL_PEOPLE_THE_HARKONNEN_ARE_RUTHLESS_TOWARDS_BOTH_FRIEND_AND_FOE_IN_THEIR_FANATICAL_PURSUIT_OF_POWER + g_playerHouseID * 40;
strncpy(g_readBuffer, String_Get_ByIndex(index), g_readBufferSize);
} else {
picture = (char *)g_readBuffer;
desc = text;
while (*text != '\0' && *text != 0xC) text++;
if (*text != '\0') *text++ = '\0';
}
GUI_Mentat_Loop(picture, desc, text, loc12 ? 1 : 0, g_widgetMentatFirst);
GUI_Widget_MakeNormal(g_widgetMentatFirst, false);
GUI_Mentat_LoadHelpSubjects(false);
GUI_Mentat_Create_HelpScreen_Widgets();
GUI_Mentat_Draw(true);
}