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Tool: Makes header editor work with archived/soft-patched ROMs. #31

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Merged
Fiskbit merged 1 commit into from
Apr 15, 2026
+11 −9
Merged

Tool: Makes header editor work with archived/soft-patched ROMs. #31

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20 changes: 11 additions & 9 deletions UI/Debugger/ViewModels/NesHeaderEditViewModel.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -29,12 +29,16 @@ public class NesHeaderEditViewModel : DisposableViewModel
[Reactive] public string ErrorMessage { get; private set; } = "";

private RomInfo _romInfo;
private byte[] _prgRom;
private byte[] _chrRom;

public NesHeaderEditViewModel()
{
bool releaseDebugger = !DebugWindowManager.HasOpenedDebugWindows();
bool paused = EmuApi.IsPaused();
byte[] headerBytes = DebugApi.GetRomHeader();
_prgRom = DebugApi.GetMemoryState(MemoryType.NesPrgRom);
_chrRom = DebugApi.GetMemoryState(MemoryType.NesChrRom);
if(releaseDebugger) {
//GetRomHeader will initialize the debugger - stop the debugger if no other debug window is opened
DebugApi.ReleaseDebugger();
Expand Down Expand Up @@ -150,16 +154,14 @@ private string GetErrorMessage()

public async Task<bool> Save(Window wnd)
{
string? filepath = await FileDialogHelper.SaveFile(Path.GetDirectoryName(_romInfo.RomPath), Path.GetFileName(_romInfo.RomPath), wnd, FileDialogHelper.NesExt);
string? filepath = await FileDialogHelper.SaveFile(Path.GetDirectoryName(_romInfo.RomPath), _romInfo.GetRomName(), wnd, FileDialogHelper.NesExt);
if(filepath != null) {
byte[]? data = FileHelper.ReadAllBytes(_romInfo.RomPath);
if(data != null) {
byte[] header = Header.ToBytes();
for(int i = 0; i < 16; i++) {
data[i] = header[i];
}
return FileHelper.WriteAllBytes(filepath, data);
}
byte[] data = new byte[_prgRom.Length + _chrRom.Length + 16];
byte[] header = Header.ToBytes();
Array.Copy(header, data, 16);
Array.Copy(_prgRom, 0, data, 16, _prgRom.Length);
Array.Copy(_chrRom, 0, data, 16 + _prgRom.Length, _chrRom.Length);
return FileHelper.WriteAllBytes(filepath, data);
}
return false;
}
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