public ROMHandler(string fn)
{
#if !DEBUG
try
#endif
{
reload:
DMATableAddress = FileNameTableAddress = SceneTableAddress = -1;
Filename = fn;
/* Initialize segment and rendering systems */
SegmentMapping = new Hashtable();
Renderer = new F3DEX2Interpreter(this);
/* Read ROM */
BinaryReader br = new BinaryReader(File.Open(fn, FileMode.Open, FileAccess.Read, FileShare.Read));
if (br.BaseStream.Length < MinROMSize)
{
throw new ROMHandlerException(string.Format("File size is less than {0}MB; ROM appears to be invalid.", MinROMSize / 0x100000));
}
Data = new byte[br.BaseStream.Length];
br.Read(Data, 0, (int)br.BaseStream.Length);
br.Close();
/* Detect byte order */
DetectByteOrder();
if (DetectedByteOrder != ByteOrder.BigEndian)
{
if (MessageBox.Show("The ROM file you have selected uses an incompatible byte order, and needs to be converted to Big Endian format to be used." + Environment.NewLine + Environment.NewLine +
"Convert the ROM now? (You will be asked for the target filename; the converted ROM will also be reloaded.)", "Byte Order Warning", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
/* Ask for new filename */
string fnnew = GUIHelpers.ShowSaveFileDialog("Nintendo 64 ROMs (*.z64;*.bin)|*.z64;*.bin|All Files (*.*)|*.*");
if (fnnew != string.Empty)
{
fn = fnnew;
/* Perform byte order conversion */
byte[] datanew = new byte[Data.Length];
byte[] conv = null;
for (int i = 0, j = 0; i < Data.Length; i += 4, j += 4)
{
if (DetectedByteOrder == ByteOrder.MiddleEndian)
{
conv = new byte[4] {
Data[i + 1], Data[i], Data[i + 3], Data[i + 2]
}
}
;
else if (DetectedByteOrder == ByteOrder.LittleEndian)
{
conv = new byte[4] {
Data[i + 3], Data[i + 2], Data[i + 1], Data[i]
}
}
;
Buffer.BlockCopy(conv, 0, datanew, j, conv.Length);
}
/* Save converted ROM, then reload it */
BinaryWriter bw = new BinaryWriter(File.Create(fn));
bw.Write(datanew);
bw.Close();
goto reload;
}
}
else
{
/* Wrong byte order, no conversion performed */
throw new ByteOrderException(string.Format("Incompatible byte order {0} detected; ROM cannot be used.", DetectedByteOrder));
}
}
else
{
/* Read header */
ReadROMHeader();
/* Create XML actor definition reader */
XMLActorDefReader = new XMLActorDefinitionReader(Path.Combine("XML", "ActorDefinitions", GameID.Substring(1, 2)));
if (XMLActorDefReader.Definitions.Count > 0)
{
/* Create remaining XML-related objects */
XMLActorNames = new XMLHashTableReader(Path.Combine("XML", "GameDataGeneric", GameID.Substring(1, 2)), "ActorNames.xml");
XMLObjectNames = new XMLHashTableReader(Path.Combine("XML", "GameDataGeneric", GameID.Substring(1, 2)), "ObjectNames.xml");
XMLSongNames = new XMLHashTableReader(Path.Combine("XML", "GameDataGeneric", GameID.Substring(1, 2)), "SongNames.xml");
XMLSceneNames = new XMLHashTableReader(Path.Combine("XML", "GameDataSpecific", string.Format("{0}{1:X1}", GameID, Version)), "SceneNames.xml");
XMLRoomNames = new XMLHashTableReader(Path.Combine("XML", "GameDataSpecific", string.Format("{0}{1:X1}", GameID, Version)), "RoomNames.xml");
XMLStageDescriptions = new XMLHashTableReader(Path.Combine("XML", "GameDataSpecific", string.Format("{0}{1:X1}", GameID, Version)), "StageDescriptions.xml");
/* Determine if ROM uses z64tables hack */
HasZ64TablesHack = (Version == 15 && Endian.SwapUInt32(BitConverter.ToUInt32(Data, 0x1238)) != 0x0C00084C);
/* Find and read build information, DMA table, etc. */
FindBuildInfo();
FindDMATable();
FindFileNameTable();
ReadDMATable();
ReadFileNameTable();
/* Try to identify files */
foreach (DMATableEntry dte in Files)
{
dte.Identify(this);
}
/* Find the code file */
FindCodeFile();
/* Find other Zelda-specific stuff */
FindActorTable();
FindObjectTable();
FindSceneTable();
ReadEntranceTable();
/* Some sanity checking & exception handling*/
if (Scenes == null || Scenes.Count == 0)
{
throw new ROMHandlerException("No valid scenes could be recognized in the ROM.");
}
/* Done */
Loaded = true;
}
}
}
#if !DEBUG
catch (Exception ex)
{
Loaded = false;
if (MessageBox.Show(ex.Message + "\n\n" + "Show detailed information?", "Exception", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes)
{
MessageBox.Show(ex.ToString(), "Exception Details", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
#endif
}