private static void HeaderFix_cmd17(ROM rom, ROM initROM, out bool isFixed)
{
int segment = rom.Read8(3);
int startAddress = initROM.GetSegmentDescriptor(0x0E).start;
int endAddress = startAddress + initROM.GetSegmentDescriptor(0x0E).length;
if (segment != 0x0E)
{
isFixed = false;
return;
}
rom.Write32(startAddress, 4);
rom.Write32(endAddress, 8);
isFixed = true;
}
public static void PerformHeaderParse(ROM rom, int offset)
{
rom.PushOffset(offset);
RegionParseState state = new RegionParseState();
state.start = rom.offset;
byte curCmdIndex;
int stepCounter = 0;
do
{
curCmdIndex = rom.Read8();
byte curCmdSize = rom.Read8(1);
if (curCmdSize == 0)
{
throw new ArgumentException("cmd size is 0, loop detected");
}
if (curCmdIndex == 0x00)
{
HeaderParse_cmd00(rom);
}
if (curCmdIndex == 0x17)
{
HeaderParse_cmd17(rom);
}
rom.AddOffset(curCmdSize);
stepCounter++;
if (stepCounter > 100)
{
throw new ArgumentException("Bank 0x19 && 0x0E loader was not detected");
}
}while (rom.GetSegmentDescriptor(0x0E) == null || rom.GetSegmentDescriptor(0x19) == null);
rom.PopOffset();
}
public static void FixLoadAddresses(ROM initROM, Region region)
{
// This is fake rom but it works anyways, just more convenient
ROM rom = new ROM(region.data);
RegionParseState state = new RegionParseState();
state.start = rom.offset;
byte curCmdIndex;
int stepCounter = 0;
do
{
curCmdIndex = rom.Read8();
byte curCmdSize = rom.Read8(1);
if (curCmdSize == 0)
{
throw new ArgumentException("cmd size is 0, loop detected");
}
if (curCmdIndex == 0x17)
{
bool isFixed;
HeaderFix_cmd17(rom, initROM, out isFixed);
if (isFixed)
{
break;
}
}
rom.AddOffset(curCmdSize);
stepCounter++;
if (stepCounter > 100)
{
throw new ArgumentException("Bank 0x19 && 0x0E loader was not detected");
}
}while (rom.GetSegmentDescriptor(0x0E) == null || rom.GetSegmentDescriptor(0x19) == null);
}
private void button1_Click(object sender, EventArgs e)
{
GC.Collect();
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.Filter = "ROM File|*.z64";
openFileDialog1.Title = "Select a ROM";
if (openFileDialog1.ShowDialog() != System.Windows.Forms.DialogResult.OK)
{
return;
}
string path = openFileDialog1.FileName;
path = Path.GetFullPath(path);
ROM rom = new ROM(File.ReadAllBytes(path));
int offset = Convert.ToInt32(addressTextBox.Text, 16);
if (offset == 0)
{
MessageBox.Show("Failed to parse address, input correct address", "Level Split", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
LevelScript.PerformHeaderParse(rom, offset);
SegmentDescriptor segmentDescriptor0E = rom.GetSegmentDescriptor(0x0E);
SegmentDescriptor segmentDescriptor19 = rom.GetSegmentDescriptor(0x19);
DataBuilder segment0E = new DataBuilder(segmentDescriptor0E.start, segmentDescriptor0E.length);
DataBuilder segment19 = new DataBuilder(segmentDescriptor19.start, segmentDescriptor19.length);
string dirname = splittedPathTextBox.Text;
// Fill in area relocation table + geolayouts
KeyRelocationTable areaGraphicsDescrRelocationTable = new KeyRelocationTable();
KeyRelocationTable areaGraphicsDataRelocationTable = new KeyRelocationTable();
KeyRelocationTable areaCollisionRelocationTable = new KeyRelocationTable();
for (int area = 1; area <= 8; area++)
{
if (!PathComposer.IsRegionFileExists(dirname, RegionState.GraphicsData, area: area))
{
continue;
}
// Area graphics
ParseGraphics(dirname, segment0E, segment19, rom, out RelocationUnit descrUnit, out RelocationUnit dataUnit, area: area);
areaGraphicsDescrRelocationTable.AddUnit(area, descrUnit);
areaGraphicsDataRelocationTable.AddUnit(area, dataUnit);
// Area collision
DynamicRegion collision = new DynamicRegion(dirname, RegionState.Collision, area: area);
// No relocation needed
segment0E.AddRegion(collision);
segment0E.RoundOffset();
RelocationUnit collisionRelocationUnit = new RelocationUnit(collision, rom, isFromStatic: true);
areaCollisionRelocationTable.AddUnit(area, collisionRelocationUnit);
}
// Fill in model relocation table + geolayouts
KeyRelocationTable modelRelocationTable = new KeyRelocationTable();
for (int model = 0x00; model < 0xFF; model++)
{
if (!PathComposer.IsRegionFileExists(dirname, RegionState.GraphicsData, model: model))
{
continue;
}
ParseGraphics(dirname, segment0E, segment19, rom, out RelocationUnit descrUnit, out RelocationUnit graphicsUnit, model: model);
modelRelocationTable.AddUnit(model, descrUnit);
}
// As everything is prepared, we can finally start building level!
LevelScriptRegion levelHeader = new LevelScriptRegion(dirname, RegionState.LevelHeader);
LevelScript.FixLoadAddresses(rom, levelHeader);
segment19.AddRegion(levelHeader);
int levelScriptSegmentedAddressStart = rom.GetSegmentedAddress(levelHeader.romStart);
LevelScriptRegion modelsLoader = new LevelScriptRegion(dirname, RegionState.ModelsLoader);
modelsLoader.Relocate(modelRelocationTable);
segment19.AddRegion(modelsLoader);
for (sbyte area = 0; area < 8; area++)
{
if (!PathComposer.IsRegionFileExists(dirname, RegionState.GraphicsData, area: area))
{
continue;
}
// Area header initializes graphics
LevelScriptRegion areaHeader = new LevelScriptRegion(dirname, RegionState.AreaHeader, area: area);
LevelScript.PerformRegionRelocation(areaHeader, areaGraphicsDescrRelocationTable, area);
segment19.AddRegion(areaHeader);
LevelScriptRegion areaData = new LevelScriptRegion(dirname, RegionState.AreaData, area: area);
// No relocation needed
segment19.AddRegion(areaData);
if (PathComposer.IsRegionFileExists(dirname, RegionState.AreaScrolls, area: area))
{
LevelScriptRegion scrollsData = new LevelScriptRegion(dirname, RegionState.AreaScrolls, area: area);
LevelScript.PerformRegionRelocation(scrollsData, areaGraphicsDataRelocationTable, area);
segment19.AddRegion(scrollsData);
}
// Area footer initializes collision
LevelScriptRegion areaFooter = new LevelScriptRegion(dirname, RegionState.AreaFooter, area: area);
LevelScript.PerformRegionRelocation(areaFooter, areaCollisionRelocationTable, area);
segment19.AddRegion(areaFooter);
}
LevelScriptRegion levelFooter = new LevelScriptRegion(dirname, RegionState.LevelFooter);
// no relocation needed
segment19.AddRegion(levelFooter);
// At this point we know that all data fit in rom
// So just write all that in rom
using (Stream stream = new FileStream(path, FileMode.Open))
{
stream.Seek(segmentDescriptor0E.start, SeekOrigin.Begin);
stream.Write(segment0E.Data, 0, segment0E.Offset);
stream.Seek(segmentDescriptor19.start, SeekOrigin.Begin);
stream.Write(segment19.Data, 0, segment19.Offset);
// Also start of level script moved so write that thing too
int endianData = IPAddress.HostToNetworkOrder(levelScriptSegmentedAddressStart);
byte[] convertedData = BitConverter.GetBytes(endianData);
stream.Seek(rom.levelScriptEntryOffset, SeekOrigin.Begin);
stream.Write(convertedData, 0, 4);
}
MessageBox.Show(String.Format("ROM was build successfully from {0}", dirname), "Level Split", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
