Macrology/Macrology/GameFunctions.cs

87 lines
3.4 KiB
C#

using Dalamud.Plugin;
using System;
using System.Diagnostics.CodeAnalysis;
using System.Runtime.InteropServices;
using System.Text;
namespace Macrology {
public class GameFunctions {
private Macrology Plugin { get; }
private delegate IntPtr GetUiModuleDelegate(IntPtr basePtr);
private delegate void EasierProcessChatBoxDelegate(IntPtr uiModule, IntPtr message, IntPtr unused, byte a4);
private readonly GetUiModuleDelegate _getUiModule;
private readonly EasierProcessChatBoxDelegate _easierProcessChatBox;
private readonly IntPtr _uiModulePtr;
public GameFunctions(Macrology plugin) {
this.Plugin = plugin ?? throw new ArgumentNullException(nameof(plugin), "Plugin cannot be null");
var getUiModulePtr = this.Plugin.Interface.TargetModuleScanner.ScanText("E8 ?? ?? ?? ?? 48 83 7F ?? 00 48 8B F0");
var easierProcessChatBoxPtr = this.Plugin.Interface.TargetModuleScanner.ScanText("48 89 5C 24 ?? 57 48 83 EC 20 48 8B FA 48 8B D9 45 84 C9");
this._uiModulePtr = this.Plugin.Interface.TargetModuleScanner.GetStaticAddressFromSig("48 8B 0D ?? ?? ?? ?? 48 8D 54 24 ?? 48 83 C1 10 E8 ?? ?? ?? ??");
if (getUiModulePtr == IntPtr.Zero || easierProcessChatBoxPtr == IntPtr.Zero || this._uiModulePtr == IntPtr.Zero) {
PluginLog.Log($"getUIModulePtr: {getUiModulePtr.ToInt64():x}");
PluginLog.Log($"easierProcessChatBoxPtr: {easierProcessChatBoxPtr.ToInt64():x}");
PluginLog.Log($"this.uiModulePtr: {this._uiModulePtr.ToInt64():x}");
throw new ApplicationException("Got null pointers for game signature(s)");
}
this._getUiModule = Marshal.GetDelegateForFunctionPointer<GetUiModuleDelegate>(getUiModulePtr);
this._easierProcessChatBox = Marshal.GetDelegateForFunctionPointer<EasierProcessChatBoxDelegate>(easierProcessChatBoxPtr);
}
public void ProcessChatBox(string message) {
var uiModule = this._getUiModule(Marshal.ReadIntPtr(this._uiModulePtr));
if (uiModule == IntPtr.Zero) {
throw new ApplicationException("uiModule was null");
}
using var payload = new ChatPayload(message);
var mem1 = Marshal.AllocHGlobal(400);
Marshal.StructureToPtr(payload, mem1, false);
this._easierProcessChatBox(uiModule, mem1, IntPtr.Zero, 0);
Marshal.FreeHGlobal(mem1);
}
}
[StructLayout(LayoutKind.Explicit)]
[SuppressMessage("ReSharper", "PrivateFieldCanBeConvertedToLocalVariable")]
internal readonly struct ChatPayload : IDisposable {
[FieldOffset(0)]
private readonly IntPtr textPtr;
[FieldOffset(16)]
private readonly ulong textLen;
[FieldOffset(8)]
private readonly ulong unk1;
[FieldOffset(24)]
private readonly ulong unk2;
internal ChatPayload(string text) {
var stringBytes = Encoding.UTF8.GetBytes(text);
this.textPtr = Marshal.AllocHGlobal(stringBytes.Length + 30);
Marshal.Copy(stringBytes, 0, this.textPtr, stringBytes.Length);
Marshal.WriteByte(this.textPtr + stringBytes.Length, 0);
this.textLen = (ulong) (stringBytes.Length + 1);
this.unk1 = 64;
this.unk2 = 0;
}
public void Dispose() {
Marshal.FreeHGlobal(this.textPtr);
}
}
}