HaikuOS port (#97)

* ExternalFileLevelStorageSource: add workaround for d_type on Haiku

* raknet: FileList: do not include io.h on Haiku

* raknet: SocketLayer: add sockio.h for Haiku

* cmake: link -lnetwork on Haiku

* readme: add Haiku build dependencies

* cmake: use link_libraries instead of add_link_options

* ExternalFileLevelStorageSource: use scary stdstring instead of char

README.md

@@ -17,6 +17,7 @@ based on the mcpe01_canada.apk build of the game.
 	* WebGL
 	* macOS (port by [BrentDaMage](https://github.com/BrentDaMage))
 	* Xbox 360 (incomplete; port by [BrentDaMage](https://github.com/BrentDaMage))
+	* HaikuOS
 
 **We will not do the following:**
 * Add features added in or after Java Edition Beta 1.8
@@ -140,6 +141,19 @@ cmake --build .
 ./reminecraftpe
 ```
 
+### HaikuOS
+
+#### Dependencies
+
+- `libsdl2_devel` (SDL2)
+- `glu_devel mesa_devel` (Mesa)
+- `cmake` (CMake)
+- `ninja` (Ninja)
+
+#### How To Build
+
+- Same as for Linux.
+ 
 ## Have seams when playing?
 
 I've had texture seams when playing Minecraft Classic, ClassiCube and this recreation of Minecraft PE, on a

platforms/sdl/CMakeLists.txt

@@ -20,6 +20,11 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
     add_compile_options(-Wno-inconsistent-missing-override -Wno-enum-compare-switch -Wno-register)
 endif()
 
+# Network library
+if(HAIKU)
+    link_libraries(network)
+endif()
+
 # Threads
 if(EMSCRIPTEN)
     add_compile_and_link_options(-pthread)

source/world/level/storage/ExternalFileLevelStorageSource.cpp

@@ -58,7 +58,14 @@ void ExternalFileLevelStorageSource::getLevelList(std::vector<LevelSummary>& vls
 
 		LOG_I("Entry: %s", de->d_name);
 
+#if defined( __HAIKU__ )
+		std::string temp = m_worldsPath + '/' + de->d_name;
+
+		struct stat buf;
+		if ( ( lstat( temp.c_str(), &buf ) == 0 ) && S_ISDIR( buf.st_mode ) )
+#else
 		if (de->d_type == DT_DIR)
+#endif
 		{
 			addLevelSummaryIfExists(vls, de->d_name);
 		}

thirdparty/raknet/FileList.cpp

@@ -20,7 +20,7 @@
 #include <io.h>
 
 
-#elif !defined ( __APPLE__ ) && !defined ( __APPLE_CC__ ) && !defined ( __PPC__ ) && !defined ( __FreeBSD__ ) && !defined ( __S3E__ ) && !defined( __EMSCRIPTEN__) && !defined( __ANDROID__ )
+#elif !defined ( __APPLE__ ) && !defined ( __APPLE_CC__ ) && !defined ( __PPC__ ) && !defined ( __FreeBSD__ ) && !defined ( __S3E__ ) && !defined ( __EMSCRIPTEN__ ) && !defined ( __ANDROID__ ) && !defined ( __HAIKU__ )
 #include <sys/io.h>
 #endif
 

thirdparty/raknet/SocketLayer.cpp

@@ -24,6 +24,10 @@
 #include <netdb.h>
 #endif
 
+#if defined( __HAIKU__ )
+#include "sys/sockio.h" // for SIOCGIFNETMASK
+#endif
+
 using namespace RakNet;
 
 /*