Add plugin interface

AMBuilder

@@ -39,6 +39,7 @@ for sdk_target in MMSPlugin.sdk_targets:
   binary.compiler.cxxincludes += [
     os.path.join(builder.sourcePath, 'src', 'cs2_sdk'),
     os.path.join(builder.sourcePath, 'src', 'utils'),
+    os.path.join(builder.sourcePath, 'public'),
     os.path.join(builder.sourcePath, 'vendor', 'funchook', 'include'),
   ]
 

public/imultiaddonmanager.h

@@ -0,0 +1,41 @@
+/**
+ * =============================================================================
+ * MultiAddonManager
+ * Copyright (C) 2024 xen
+ * =============================================================================
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, version 3.0, as published by the
+ * Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#define MULTIADDONMANAGER_INTERFACE "MultiAddonManager001"
+
+class IMultiAddonManager
+{
+public:
+	// These add/remove to the internal list without reloading anything
+	// pszWorkshopID is the workshop ID in string form (e.g. "3157463861")
+	virtual bool AddAddon(const char *pszWorkshopID) = 0;
+	virtual bool RemoveAddon(const char *pszWorkshopID) = 0;
+
+	// Returns true if the given addon is mounted in the filesystem
+	virtual bool IsAddonMounted(const char *pszWorkshopID) = 0;
+
+	// Refresh addons, applying any changes from add/remove
+	// This will trigger a map reload once all addons are updated and mounted
+	virtual void RefreshAddons() = 0;
+
+	// Clear the internal list and unmount all addons excluding the current workshop map
+	virtual void ClearAddons() = 0;
+};

src/multiaddonmanager.cpp

@@ -117,6 +117,9 @@ INetworkGameServer *g_pNetworkGameServer = nullptr;
 CSteamGameServerAPIContext g_SteamAPI;
 CGlobalVars *gpGlobals = nullptr;
 
+// Interface to other plugins
+CAddonManagerInterface g_AddonManagerInterface;
+
 PLUGIN_EXPOSE(MultiAddonManager, g_MultiAddonManager);
 bool MultiAddonManager::Load(PluginId id, ISmmAPI *ismm, char *error, size_t maxlen, bool late)
 {
@@ -227,6 +230,19 @@ bool MultiAddonManager::Unload(char *error, size_t maxlen)
 	return true;
 }
 
+void *MultiAddonManager::OnMetamodQuery(const char *iface, int *ret)
+{
+	if (V_strcmp(iface, MULTIADDONMANAGER_INTERFACE))
+	{
+		if (ret)
+			*ret = META_IFACE_FAILED;
+
+		return nullptr;
+	}
+
+	return &g_AddonManagerInterface;
+}
+
 void MultiAddonManager::BuildAddonPath(const char *pszAddon, char *buf, size_t len)
 {
 	// The workshop is stored relative to the working directory for whatever reason
@@ -449,6 +465,8 @@ bool MultiAddonManager::AddAddon(const char *pszAddon, bool bRefresh = false)
 
 	if (bRefresh)
 		RefreshAddons();
+
+	return true;
 }
 
 bool MultiAddonManager::RemoveAddon(const char *pszAddon, bool bRefresh = false)
@@ -771,3 +789,28 @@ const char *MultiAddonManager::GetURL()
 {
 	return "https://github.com/Source2ZE/MultiAddonManager";
 }
+
+bool CAddonManagerInterface::AddAddon(const char *pszAddon)
+{
+	return g_MultiAddonManager.AddAddon(pszAddon);
+}
+
+bool CAddonManagerInterface::RemoveAddon(const char *pszAddon)
+{
+	return g_MultiAddonManager.RemoveAddon(pszAddon);
+}
+
+bool CAddonManagerInterface::IsAddonMounted(const char *pszAddon)
+{
+	return g_MultiAddonManager.m_MountedAddons.Find(pszAddon) != -1;
+}
+
+void CAddonManagerInterface::RefreshAddons()
+{
+	g_MultiAddonManager.RefreshAddons(true);
+}
+
+void CAddonManagerInterface::ClearAddons()
+{
+	g_MultiAddonManager.ClearAddons();
+}

src/multiaddonmanager.h

@@ -26,6 +26,7 @@
 #include "utlvector.h"
 #include "steam/steam_api_common.h"
 #include "steam/isteamugc.h"
+#include "imultiaddonmanager.h"
 
 #ifdef _WIN32
 #define ROOTBIN "/bin/win64/"
@@ -70,6 +71,7 @@ class MultiAddonManager : public ISmmPlugin, public IMetamodListener
 public:
 	bool Load(PluginId id, ISmmAPI *ismm, char *error, size_t maxlen, bool late);
 	bool Unload(char *error, size_t maxlen);
+	void *OnMetamodQuery(const char *iface, int *ret);
 public: //hooks
 	void Hook_GameServerSteamAPIActivated();
 	void Hook_StartupServer(const GameSessionConfiguration_t &config, ISource2WorldSession *, const char *);
@@ -113,3 +115,14 @@ class MultiAddonManager : public ISmmPlugin, public IMetamodListener
 extern MultiAddonManager g_MultiAddonManager;
 
 PLUGIN_GLOBALVARS();
+
+// Interface to other plugins
+class CAddonManagerInterface : IMultiAddonManager
+{
+public:
+	virtual bool AddAddon(const char *pszAddon) override;
+	virtual bool RemoveAddon(const char *pszAddon) override;
+	virtual bool IsAddonMounted(const char *pszAddon) override;
+	virtual void RefreshAddons() override;
+	virtual void ClearAddons() override;
+};