Add: scaffolding for finding social plugins on disk

src/CMakeLists.txt

@@ -393,6 +393,8 @@ add_files(
     slope_type.h
     smallmap_gui.cpp
     smallmap_gui.h
+    social_integration.cpp
+    social_integration.h
     sortlist_type.h
     sound.cpp
     sound_func.h

src/console_cmds.cpp

@@ -2141,6 +2141,7 @@ DEF_CONSOLE_CMD(ConListDirs)
 		{ SAVE_DIR,         "save",       true  },
 		{ AUTOSAVE_DIR,     "autosave",   true  },
 		{ SCREENSHOT_DIR,   "screenshot", true  },
+		{ SOCIAL_INTEGRATION_DIR, "social_integration", true },
 	};
 
 	if (argc != 2) {

src/fileio.cpp

@@ -52,6 +52,7 @@ static const char * const _subdirs[] = {
 	"game" PATHSEP,
 	"game" PATHSEP "library" PATHSEP,
 	"screenshot" PATHSEP,
+	"social_integration" PATHSEP,
 };
 static_assert(lengthof(_subdirs) == NUM_SUBDIRS);
 
@@ -1054,7 +1055,7 @@ void DeterminePaths(const char *exe, bool only_local_path)
 	Debug(misc, 1, "{} found as personal directory", _personal_dir);
 
 	static const Subdirectory default_subdirs[] = {
-		SAVE_DIR, AUTOSAVE_DIR, SCENARIO_DIR, HEIGHTMAP_DIR, BASESET_DIR, NEWGRF_DIR, AI_DIR, AI_LIBRARY_DIR, GAME_DIR, GAME_LIBRARY_DIR, SCREENSHOT_DIR
+		SAVE_DIR, AUTOSAVE_DIR, SCENARIO_DIR, HEIGHTMAP_DIR, BASESET_DIR, NEWGRF_DIR, AI_DIR, AI_LIBRARY_DIR, GAME_DIR, GAME_LIBRARY_DIR, SCREENSHOT_DIR, SOCIAL_INTEGRATION_DIR
 	};
 
 	for (uint i = 0; i < lengthof(default_subdirs); i++) {
@@ -1068,7 +1069,7 @@ void DeterminePaths(const char *exe, bool only_local_path)
 	FillValidSearchPaths(only_local_path);
 
 	/* Create the directory for each of the types of content */
-	const Subdirectory dirs[] = { SCENARIO_DIR, HEIGHTMAP_DIR, BASESET_DIR, NEWGRF_DIR, AI_DIR, AI_LIBRARY_DIR, GAME_DIR, GAME_LIBRARY_DIR };
+	const Subdirectory dirs[] = { SCENARIO_DIR, HEIGHTMAP_DIR, BASESET_DIR, NEWGRF_DIR, AI_DIR, AI_LIBRARY_DIR, GAME_DIR, GAME_LIBRARY_DIR, SOCIAL_INTEGRATION_DIR };
 	for (uint i = 0; i < lengthof(dirs); i++) {
 		FioCreateDirectory(FioGetDirectory(SP_AUTODOWNLOAD_DIR, dirs[i]));
 	}

src/fileio_type.h

@@ -121,6 +121,7 @@ enum Subdirectory {
 	GAME_DIR,      ///< Subdirectory for all game scripts
 	GAME_LIBRARY_DIR, ///< Subdirectory for all GS libraries
 	SCREENSHOT_DIR,   ///< Subdirectory for all screenshots
+	SOCIAL_INTEGRATION_DIR, ///< Subdirectory for all social integration plugins
 	NUM_SUBDIRS,   ///< Number of subdirectories
 	NO_DIRECTORY,  ///< A path without any base directory
 };

src/openttd.cpp

@@ -75,6 +75,7 @@
 #include "timer/timer_game_economy.h"
 #include "timer/timer_game_realtime.h"
 #include "timer/timer_game_tick.h"
+#include "social_integration.h"
 
 #include "linkgraph/linkgraphschedule.h"
 
@@ -752,6 +753,7 @@ int openttd_main(int argc, char *argv[])
 	/* The video driver is now selected, now initialise GUI zoom */
 	AdjustGUIZoom(false);
 
+	SocialIntegration::Initialize();
 	NetworkStartUp(); // initialize network-core
 
 	if (!HandleBootstrap()) {

src/social_integration.cpp

@@ -0,0 +1,50 @@
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file social_integration.cpp Base implementation of social integration support. */
+
+#include "stdafx.h"
+
+#include "social_integration.h"
+#include "3rdparty/openttd_social_integration_api/openttd_social_integration_api.h"
+
+#include "debug.h"
+#include "fileio_func.h"
+#include "library_loader.h"
+#include "rev.h"
+#include "string_func.h"
+
+#include "safeguards.h"
+
+/** Helper for scanning for files with SocialIntegration as extension */
+class SocialIntegrationFileScanner : FileScanner {
+public:
+	void Scan()
+	{
+#ifdef _WIN32
+		std::string extension = "-social.dll";
+#elif defined(__APPLE__)
+		std::string extension = "-social.dylib";
+#else
+		std::string extension = "-social.so";
+#endif
+
+		this->FileScanner::Scan(extension.c_str(), SOCIAL_INTEGRATION_DIR, false);
+	}
+
+	bool AddFile(const std::string &filename, size_t basepath_length, const std::string &) override
+	{
+		std::string basepath = filename.substr(basepath_length);
+		Debug(misc, 1, "[Social Integration: {}] Loading ...", basepath);
+	}
+};
+
+void SocialIntegration::Initialize()
+{
+	SocialIntegrationFileScanner fs;
+	fs.Scan();
+}

src/social_integration.h

@@ -0,0 +1,21 @@
+/*
+ * This file is part of OpenTTD.
+ * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+ * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file social_integration.h Interface definitions for game to report/respond to social integration. */
+
+#ifndef SOCIAL_INTEGRATION_H
+#define SOCIAL_INTEGRATION_H
+
+class SocialIntegration {
+public:
+	/**
+	 * Initialize the social integration system, loading any social integration plugins that are available.
+	 */
+	static void Initialize();
+};
+
+#endif /* SOCIAL_INTEGRATION_H */