74 lines
2.8 KiB
C#
74 lines
2.8 KiB
C#
using Dalamud.Hooking;
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using Dalamud.Utility.Signatures;
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namespace OrangeGuidanceTomestone.MiniPenumbra;
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internal unsafe class VfxReplacer : IDisposable {
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private delegate byte ReadSqPackDelegate(void* resourceManager, SeFileDescriptor* pFileDesc, int priority, bool isSync);
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[Signature("E8 ?? ?? ?? ?? EB 05 E8 ?? ?? ?? ?? 84 C0 0F 84 ?? 00 00 00 4C 8B C3", DetourName = nameof(ReadSqPackDetour))]
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private Hook<ReadSqPackDelegate> _readSqPackHook;
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[Signature("E8 ?? ?? ?? ?? 84 C0 0F 84 ?? 00 00 00 4C 8B C3 BA 05")]
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private delegate* unmanaged<void*, SeFileDescriptor*, int, bool, byte> _readFile;
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private Plugin Plugin { get; }
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internal VfxReplacer(Plugin plugin) {
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this.Plugin = plugin;
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this.Plugin.GameInteropProvider.InitializeFromAttributes(this);
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this._readSqPackHook!.Enable();
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}
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public void Dispose() {
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this._readSqPackHook.Dispose();
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}
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private byte ReadSqPackDetour(void* resourceManager, SeFileDescriptor* fileDescriptor, int priority, bool isSync) {
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if (!this.Plugin.Config.RemoveGlow) {
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goto Original;
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}
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if (fileDescriptor == null || fileDescriptor->ResourceHandle == null) {
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goto Original;
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}
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var path = fileDescriptor->ResourceHandle->FileName.ToString();
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var index = Array.IndexOf(Messages.VfxPaths, path);
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if (index == -1) {
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goto Original;
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}
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var letter = (char) ('a' + index);
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var newPath = Path.Join(this.Plugin.AvfxFilePath, $"sign_{letter}.avfx");
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return this.DefaultRootedResourceLoad(newPath, resourceManager, fileDescriptor, priority, isSync);
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Original:
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return this._readSqPackHook.Original(resourceManager, fileDescriptor, priority, isSync);
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}
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// Load the resource from a path on the users hard drives.
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private byte DefaultRootedResourceLoad(string gamePath, void* resourceManager, SeFileDescriptor* fileDescriptor, int priority, bool isSync) {
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// Specify that we are loading unpacked files from the drive.
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// We need to copy the actual file path in UTF16 (Windows-Unicode) on two locations,
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// but since we only allow ASCII in the game paths, this is just a matter of upcasting.
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fileDescriptor->FileMode = SeFileMode.LoadUnpackedResource;
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var fd = stackalloc byte[0x20 + 2 * gamePath.Length + 0x16];
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fileDescriptor->FileDescriptor = fd;
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var fdPtr = (char*) (fd + 0x21);
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for (var i = 0; i < gamePath.Length; ++i) {
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(&fileDescriptor->Utf16FileName)[i] = gamePath[i];
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fdPtr[i] = gamePath[i];
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}
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(&fileDescriptor->Utf16FileName)[gamePath.Length] = '\0';
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fdPtr[gamePath.Length] = '\0';
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// Use the SE ReadFile function.
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var ret = this._readFile(resourceManager, fileDescriptor, priority, isSync);
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return ret;
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}
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}
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