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Assets/com.rlabrecque.steamworks.net/Editor/RedistInstall.cs

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+// This file is provided under The MIT License as part of Steamworks.NET.
+// Copyright (c) 2013-2022 Riley Labrecque
+// Please see the included LICENSE.txt for additional information.
+
+using UnityEngine;
+using UnityEditor;
+using System.IO;
+using System.Collections.Generic;
+
+// This copys various files into their required locations when Unity is launched to make installation a breeze.
+[InitializeOnLoad]
+public class RedistInstall {
+	static RedistInstall() {
+		WriteSteamAppIdTxtFile();
+		AddDefineSymbols();
+		CheckForOldDlls();
+	}
+
+	static void WriteSteamAppIdTxtFile() {
+		string strCWDPath = Directory.GetCurrentDirectory();
+		string strSteamAppIdPath = Path.Combine(strCWDPath, "steam_appid.txt");
+
+		// If the steam_appid.txt file already exists, then there's nothing to do.
+		if (File.Exists(strSteamAppIdPath)) {
+			return;
+		}
+
+		Debug.Log("[Steamworks.NET] 'steam_appid.txt' is not present in the project root. Writing...");
+
+		try {
+			StreamWriter appIdFile = File.CreateText(strSteamAppIdPath);
+			appIdFile.Write("480");
+			appIdFile.Close();
+
+			Debug.Log("[Steamworks.NET] Successfully copied 'steam_appid.txt' into the project root.");
+		}
+		catch (System.Exception e) {
+			Debug.LogWarning("[Steamworks.NET] Could not copy 'steam_appid.txt' into the project root. Please place 'steam_appid.txt' into the project root manually.");
+			Debug.LogException(e);
+		}
+	}
+
+	static void CheckForOldDlls() {
+		string strCwdPath = Directory.GetCurrentDirectory();
+
+		// Unfortunately we can't just delete these outright because Unity loads the dlls in the project root instantly and Windows won't let us delete them because they are in use.
+
+		string strDllPath = Path.Combine(strCwdPath, "steam_api.dll");
+		if (File.Exists(strDllPath)) {
+			Debug.LogError("[Steamworks.NET] Please delete the old version of 'steam_api.dll' in your project root before continuing.");
+		}
+
+		string strDll64Path = Path.Combine(strCwdPath, "steam_api64.dll");
+		if (File.Exists(strDll64Path)) {
+			Debug.LogError("[Steamworks.NET] Please delete the old version of 'steam_api64.dll' in your project root before continuing.");
+		}
+	}
+
+	static void AddDefineSymbols() {
+		string currentDefines = PlayerSettings.GetScriptingDefineSymbolsForGroup(EditorUserBuildSettings.selectedBuildTargetGroup);
+		HashSet<string> defines = new HashSet<string>(currentDefines.Split(';')) {
+			"STEAMWORKS_NET"
+		};
+
+		string newDefines = string.Join(";", defines);
+		if (newDefines != currentDefines) {
+			PlayerSettings.SetScriptingDefineSymbolsForGroup(EditorUserBuildSettings.selectedBuildTargetGroup, newDefines);
+		}
+	}
+}