Migrate the export scripts from gdscript to C++ via gdextension

.github/workflows/build-addon-on-push.yml

@@ -90,8 +90,14 @@ jobs:
       - name: Create Godot-CPP library
         run: |
           cd aar/thirdparty/godot-cpp
-          scons platform=${{ matrix.platform }} target=template_debug ${{ matrix.flags }}
-          scons platform=${{ matrix.platform }} target=template_release ${{ matrix.flags }}
+          scons platform=${{ matrix.platform }} target=template_debug arch=arm64 
+          scons platform=${{ matrix.platform }} target=template_release arch=arm64
+          scons platform=${{ matrix.platform }} target=template_debug arch=arm32 
+          scons platform=${{ matrix.platform }} target=template_release arch=arm32
+          scons platform=${{ matrix.platform }} target=template_debug arch=x86_64
+          scons platform=${{ matrix.platform }} target=template_release arch=x86_64
+          scons platform=${{ matrix.platform }} target=template_debug arch=x86_32
+          scons platform=${{ matrix.platform }} target=template_release arch=x86_32
           cd ../../..
         if: matrix.platform == 'android'
       - name: Create Godot OpenXR Vendors AARs
@@ -130,7 +136,7 @@ jobs:
       - name: Adding vendor licences
         run: |
           cp aar/godotopenxrmeta/LICENSE.txt asset/addons/godotopenxrvendors/meta/
-          cp aar/godotopenxrpico/src/main/jniLibs/arm64-v8a/README.md asset/addons/godotopenxrvendors/pico/LICENSE.md
+          cp aar/godotopenxrpico/libs/pico_openxr_sdk/arm64-v8a/README.md asset/addons/godotopenxrvendors/pico/LICENSE.md
           cp aar/godotopenxrkhronos/LICENSE asset/addons/godotopenxrvendors/khronos/LICENSE
 
       - name: Copying artifacts

.github/workflows/mavencentral-publish.yml

@@ -39,8 +39,14 @@ jobs:
       - name: Release build
         run: |
           cd thirdparty/godot-cpp
-          scons platform=android target=template_debug -j4
-          scons platform=android target=template_release -j4
+          scons platform=android target=template_debug arch=arm64 -j4
+          scons platform=android target=template_debug arch=arm32 -j4
+          scons platform=android target=template_debug arch=x86_64 -j4
+          scons platform=android target=template_debug arch=x86_32 -j4
+          scons platform=android target=template_release arch=arm64 -j4
+          scons platform=android target=template_release arch=arm32 -j4
+          scons platform=android target=template_release arch=x86_64 -j4
+          scons platform=android target=template_release arch=x86_32 -j4
           cd ../..
           ./gradlew -Prelease_version=${{ github.ref_name }} build
 

.gitignore

@@ -15,7 +15,6 @@ local.properties
 # Binaries
 *.o
 *.os
-*.so
 *.obj
 *.bc
 *.pyc

CHANGES.md

@@ -1,5 +1,8 @@
 # Change history for the Godot OpenXR loaders asset
 
+## 2.1.0
+- Migrate the export scripts from gdscript to C++ via gdextension
+
 ## 2.0.0
 - Update to the new Godot 4.2 Android plugin packaging format
 - Update the plugin to Godot v2 Android plugin

README.md

@@ -23,10 +23,14 @@ the end of the SCons command line where `N` is the number of CPU threads you hav
 The example below uses 4 threads.
 ```
 cd thirdparty/godot-cpp
-scons target=template_debug -j4
-scons target=template_release -j4
-scons platform=android target=template_debug -j4
-scons platform=android target=template_release -j4
+scons platform=android target=template_debug arch=arm64 -j4
+scons platform=android target=template_debug arch=arm32 -j4
+scons platform=android target=template_debug arch=x86_64 -j4
+scons platform=android target=template_debug arch=x86_32 -j4
+scons platform=android target=template_release arch=arm64 -j4
+scons platform=android target=template_release arch=arm32 -j4
+scons platform=android target=template_release arch=x86_64 -j4
+scons platform=android target=template_release arch=x86_32 -j4
 ```
 
 When the command is completed, you should have static libraries stored in `thirdparty/godot-cpp/bin` 
@@ -77,9 +81,6 @@ If you have build the asset from source, you need to create the `addons` folder
 if it doesn't exist already, and then copy the content of the `demo/addons` folder to `addons` 
 in your project.
 
-Once the asset is added to your project, navigate to `Project` -> `Project Settings...` -> `Plugins` 
-and enable the plugin. 
-
 ### Configuring your export
 
 Back in Godot open the `Project` menu and select `Export...`:

SConstruct

@@ -7,47 +7,18 @@ env = SConscript("thirdparty/godot-cpp/SConstruct")
 opts = Variables('custom.py')
 opts.Update(env)
 
-# Add source files.
+# Add common includes
 env.Append(CPPPATH=[
-# Meta includes
-    "godotopenxrmeta/src/main/cpp",
-    "godotopenxrmeta/src/main/cpp/include",
-    "godotopenxrmeta/libs/ovr_openxr_mobile_sdk/OpenXR/Include",
-# Common includes
-    "thirdparty/openxr/include/",
+    "#common/src/main/cpp",
+    "#thirdparty/openxr/include/",
     ])
 
-# Meta source files
-sources = Glob("godotopenxrmeta/src/main/cpp/*.cpp")
+common_objects = []
+common_objects.append(env.SharedObject(Glob("#common/src/main/cpp/export/*.cpp")))
 
-meta_binary_path = 'demo/addons/godotopenxrvendors/meta/.bin'
-meta_project_name = 'godotopenxrmeta'
-
-# Create the library target
-if env["platform"] == "android":
-    print("Use gradle to generate the Android binaries")
-    Exit(255)
-elif env["platform"] == "macos":
-    meta_library = env.SharedLibrary(
-        "{0}/lib{1}.{2}.{3}.framework/{1}.{2}.{3}".format(
-            meta_binary_path,
-            meta_project_name,
-            env["platform"],
-            env["target"],
-        ),
-        source=sources,
-    )
-else:
-    meta_library = env.SharedLibrary(
-        "{}/lib{}.{}.{}.{}{}".format(
-            meta_binary_path,
-            meta_project_name,
-            env["platform"],
-            env["target"],
-            env["arch"],
-            env["SHLIBSUFFIX"],
-        ),
-        source=sources,
-    )
-
-Default(meta_library)
+SConscript([
+    "godotopenxrmeta/SConstruct",
+    "godotopenxrpico/SConstruct",
+    "godotopenxrlynx/SConstruct",
+    "godotopenxrkhronos/SConstruct",
+    ], 'env common_objects')

common/CMakeLists.txt

@@ -17,6 +17,15 @@ else ()
     set(GODOT_CPP_LIB_ABI "arm64")
 endif ()
 
+# Default android platform is android-21
+if (NOT ANDROID_PLATFORM)
+    set(ANDROID_PLATFORM "android-21")
+endif (NOT ANDROID_PLATFORM)
+
+if (NOT (ANDROID_STL STREQUAL "c++_shared"))
+    set(ANDROID_STL "c++_shared")
+endif (NOT (ANDROID_STL STREQUAL "c++_shared"))
+
 # Default build type is Debug
 if (NOT CMAKE_BUILD_TYPE)
     set(CMAKE_BUILD_TYPE Debug)
@@ -32,9 +41,63 @@ else ()
     set(OPENXR_MOBILE_LIB_BUILD_TYPE Release)
 endif (CMAKE_BUILD_TYPE MATCHES Debug)
 
+# Check if ANDROID_NDK is set.
+if (NOT ANDROID_NDK)
+    # Set to ANDROID_NDK_HOME environment variable if it's set.
+    if (DEFINED ENV{ANDROID_NDK_HOME})
+        set(ANDROID_NDK $ENV{ANDROID_NDK_HOME})
+    else (DEFINED ENV{ANDROID_NDK_HOME})
+        message(WARNING "ANDROID_NDK_HOME is not set")
+    endif (DEFINED ENV{ANDROID_NDK_HOME})
+endif (NOT ANDROID_NDK)
+
+# Check if CMAKE_TOOLCHAIN_FILE is set.
+if (NOT CMAKE_TOOLCHAIN_FILE)
+    set(CMAKE_TOOLCHAIN_FILE "${ANDROID_NDK}/build/cmake/android.toolchain.cmake")
+endif (NOT CMAKE_TOOLCHAIN_FILE)
+
+if (NOT DEFINED BITS)
+    set(BITS 32)
+    if (CMAKE_SIZEOF_VOID_P EQUAL 8)
+        set(BITS 64)
+    endif (CMAKE_SIZEOF_VOID_P EQUAL 8)
+endif (NOT DEFINED BITS)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
 
 project(common LANGUAGES CXX)
 
+add_definitions(-DANDROID)
+
+set(GODOT_COMPILE_FLAGS)
+set(GODOT_LINKER_FLAGS)
+
+set(GODOT_LINKER_FLAGS "-Wl")
+
+set(GODOT_COMPILE_FLAGS "-fPIC -g -Wwrite-strings")
+set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wchar-subscripts -Wcomment -Wdisabled-optimization")
+set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wformat -Wformat=2 -Wformat-security -Wformat-y2k")
+set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wimport -Winit-self -Winline -Winvalid-pch")
+set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wlong-long -Wmissing-braces -Wmissing-format-attribute")
+set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wmissing-include-dirs -Wmissing-noreturn -Wpacked -Wpointer-arith")
+set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wredundant-decls -Wreturn-type -Wsequence-point")
+set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wswitch -Wswitch-enum -Wtrigraphs")
+set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wuninitialized -Wunknown-pragmas -Wunreachable-code -Wunused-label")
+set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wunused-value -Wvariadic-macros -Wvolatile-register-var -Wno-error=attributes")
+
+if (NOT CMAKE_SYSTEM_NAME STREQUAL "Android")
+    set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -Wno-ignored-attributes")
+endif ()
+
+if (CMAKE_BUILD_TYPE MATCHES Debug)
+    set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -fno-omit-frame-pointer -O0")
+else ()
+    set(GODOT_COMPILE_FLAGS "${GODOT_COMPILE_FLAGS} -O3")
+endif (CMAKE_BUILD_TYPE MATCHES Debug)
+
 ## godot-cpp library
 set(GODOT_CPP_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../thirdparty/godot-cpp")
 set(GODOT-CPP "godot-cpp")
@@ -56,3 +119,10 @@ set_target_properties(${GODOT-CPP} PROPERTIES IMPORTED_LOCATION ${GODOT_CPP_STAT
 
 ## OpenXR headers
 set(OPENXR_HEADERS_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../thirdparty/openxr/include")
+
+
+# Common lib
+set(COMMON_LIB_HEADERS_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../common/src/main/cpp)
+
+file(GLOB_RECURSE COMMON_LIB_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/../common/src/main/cpp/*.c**)
+file(GLOB_RECURSE COMMON_LIB_HEADERS ${CMAKE_CURRENT_SOURCE_DIR}/../common/src/main/cpp/*.h**)