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88 lines
3.5 KiB
88 lines
3.5 KiB
using System;
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using System.IO;
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using System.Runtime.InteropServices;
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using UnityEngine;
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public partial class UniQuake
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{
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#if UNITY_EDITOR
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private const string DllPath = "Plugins/windows/x86_64/uniquake.dll";
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#elif UNITY_STANDALONE_WIN
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#if UNITY_64
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private const string DllPath = "Plugins/x86_64/uniquake.dll";
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#else
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private const string DllPath = "Plugins/x86/uniquake.dll";
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#endif
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#endif
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private IntPtr libraryHandle;
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[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
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private delegate void UniQuake_InitFunc(IntPtr parms);
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private UniQuake_InitFunc UniQuake_Init;
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[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
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private delegate void UniQuake_UpdateFunc(float deltaTime);
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private UniQuake_UpdateFunc UniQuake_Update;
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[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
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private delegate void UniQuake_ShutdownFunc();
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private UniQuake_ShutdownFunc UniQuake_Shutdown;
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[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
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private delegate void UniQuake_SetFmodSystemFunc(IntPtr fmodSystem, int playerNumber = 0);
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private UniQuake_SetFmodSystemFunc UniQuake_SetFmodSystem;
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[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
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private delegate void UniQuake_SetCallbacksFunc(IntPtr context, IntPtr callbacks);
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private UniQuake_SetCallbacksFunc UniQuake_SetSysCallbacks;
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private UniQuake_SetCallbacksFunc UniQuake_SetRenderCallbacks;
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private UniQuake_SetCallbacksFunc UniQuake_SetGameCallbacks;
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private void LoadLibrary()
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{
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string dllFile = Path.Combine(Application.dataPath, DllPath);
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// Experimental code to allow running multiple instances of Quake next to each other
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if (!string.IsNullOrEmpty(LibraryOverride))
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{
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string directory = Path.GetDirectoryName(dllFile);
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string extension = Path.GetExtension(dllFile);
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dllFile = Path.Combine(directory, LibraryOverride + extension);
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}
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libraryHandle = SystemLibrary.LoadLibrary(dllFile);
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if (libraryHandle == IntPtr.Zero)
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{
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throw new DllNotFoundException($"Failed to load UniQuake library from path: {dllFile}, last error = {Marshal.GetLastWin32Error()}");
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}
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UniQuake_Init = LoadLibraryFunction<UniQuake_InitFunc>(nameof(UniQuake_Init));
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UniQuake_Update = LoadLibraryFunction<UniQuake_UpdateFunc>(nameof(UniQuake_Update));
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UniQuake_Shutdown = LoadLibraryFunction<UniQuake_ShutdownFunc>(nameof(UniQuake_Shutdown));
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UniQuake_SetFmodSystem = LoadLibraryFunction<UniQuake_SetFmodSystemFunc>(nameof(UniQuake_SetFmodSystem));
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UniQuake_SetSysCallbacks = LoadLibraryFunction<UniQuake_SetCallbacksFunc>(nameof(UniQuake_SetSysCallbacks));
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UniQuake_SetRenderCallbacks = LoadLibraryFunction<UniQuake_SetCallbacksFunc>(nameof(UniQuake_SetRenderCallbacks));
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UniQuake_SetGameCallbacks = LoadLibraryFunction<UniQuake_SetCallbacksFunc>(nameof(UniQuake_SetGameCallbacks));
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}
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private TDelegate LoadLibraryFunction<TDelegate>(string functionName)
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{
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IntPtr procAddress = SystemLibrary.GetProcAddress(libraryHandle, functionName);
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if (procAddress == IntPtr.Zero)
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{
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throw new DllNotFoundException($"Could not find library function: {functionName}");
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}
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return Marshal.GetDelegateForFunctionPointer<TDelegate>(procAddress);
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}
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private void FreeLibrary()
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{
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if (libraryHandle != IntPtr.Zero)
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{
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SystemLibrary.FreeLibrary(libraryHandle);
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libraryHandle = IntPtr.Zero;
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}
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}
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}
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