Support building for Godot 4.1 (new default).

Author: Faless

.github/workflows/build_release.yml

@@ -177,15 +177,23 @@ jobs:
           scons --version
           cmake --version
 
-      - name: Compile Extension - template_debug - ${{ matrix.platform }} - ${{ matrix.arch }}
+      - name: Compile Extension (4.1+) - template_debug - ${{ matrix.platform }} - ${{ matrix.arch }}
         run: |
-          scons target=template_debug
+          scons target=template_debug godot_version=4.1
 
-      - name: Compile Extension - template_release - ${{ matrix.platform }} - ${{ matrix.arch }}
+      - name: Compile Extension (4.1+) - template_release - ${{ matrix.platform }} - ${{ matrix.arch }}
         run: |
-          scons target=template_release
+          scons target=template_release godot_version=4.1
 
-      - name: Compile GDNative - release ${{ matrix.platform }} - ${{ matrix.arch }}
+      - name: Compile Extension (4.0) - template_debug - ${{ matrix.platform }} - ${{ matrix.arch }}
+        run: |
+          scons target=template_debug godot_version=4.0
+
+      - name: Compile Extension (4.0) - template_release - ${{ matrix.platform }} - ${{ matrix.arch }}
+        run: |
+          scons target=template_release godot_version=4.0
+
+      - name: Compile GDNative (3.5+) - release ${{ matrix.platform }} - ${{ matrix.arch }}
         run: |
           scons target=release generate_bindings=yes ${{ matrix.gdnative_flags }} godot_version=3
 
@@ -226,15 +234,21 @@ jobs:
         run: |
           mkdir release
 
-          VERSION="extension" TYPE="webrtc" ./misc/scripts/package_release.sh
+          VERSION="extension-4.1" TYPE="webrtc" ./misc/scripts/package_release.sh
+          VERSION="extension-4.0" TYPE="webrtc" ./misc/scripts/package_release.sh
           VERSION="gdnative" TYPE="webrtc" ./misc/scripts/package_release.sh
 
           ls -R release
 
       - uses: actions/upload-artifact@v3
         with:
-          name: godot-webrtc-extension
-          path: release/*-extension-*.zip
+          name: godot-webrtc-extension-4.1
+          path: release/*-extension-4.1-*.zip
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: godot-webrtc-extension-4.0
+          path: release/*-extension-4.0-*.zip
 
       - uses: actions/upload-artifact@v3
         with:

.gitmodules

@@ -1,9 +1,12 @@
-[submodule "godot-cpp-3.x"]
-	path = godot-cpp-3.x
-	url = https://github.com/godotengine/godot-cpp.git
 [submodule "godot-cpp"]
 	path = godot-cpp
 	url = https://github.com/godotengine/godot-cpp.git
+[submodule "godot-cpp-4.0"]
+	path = godot-cpp-4.0
+	url = https://github.com/godotengine/godot-cpp.git
+[submodule "godot-cpp-3.x"]
+	path = godot-cpp-3.x
+	url = https://github.com/godotengine/godot-cpp.git
 [submodule "libdatachannel"]
 	path = thirdparty/libdatachannel
 	url = https://github.com/paullouisageneau/libdatachannel.git

README.md

@@ -21,14 +21,20 @@ $ git submodule update --init --recursive
 
 ### Compiling the extension.
 
-To build the GDExtension version of the plugin (Godot 4.0) run the following command from the `webrtc-native` folder:
+To build the GDExtension version of the plugin (Godot 4.1+) run the following command from the `webrtc-native` folder:
 
 ```
 $ scons platform=<your platform>
 ```
 
 This will build all the required dependencies into a single shared library.
 
+To build the "legacy" GDExtension version of the plugin (Godot 4.0) run the following command instead:
+
+```
+$ scons platform=<your platform> godot_version=4.0
+```
+
 To build the GDNative version of the plugin (Godot 3.x) run the following command instead:
 
 ```

SConstruct

@@ -18,7 +18,7 @@ def replace_flags(flags, replaces):
 
 env = Environment()
 opts = Variables(["customs.py"], ARGUMENTS)
-opts.Add(EnumVariable("godot_version", "The Godot target version", "4", ["3", "4"]))
+opts.Add(EnumVariable("godot_version", "The Godot target version", "4.1", ["3", "4.0", "4.1"]))
 opts.Update(env)
 
 # Minimum target platform versions.
@@ -96,6 +96,8 @@ if env["godot_version"] == "3":
         elif not env["use_mingw"]:
             # Mark as MSVC build (would have failed to build the library otherwise).
             env["is_msvc"] = True
+elif env["godot_version"] == "4.0":
+    env = SConscript("godot-cpp-4.0/SConstruct").Clone()
 else:
     env = SConscript("godot-cpp/SConstruct").Clone()
 
@@ -135,8 +137,10 @@ opts.Update(env)
 target = env["target"]
 if env["godot_version"] == "3":
     result_path = os.path.join("bin", "gdnative", "webrtc" if env["target"] == "release" else "webrtc_debug")
+elif env["godot_version"] == "4.0":
+    result_path = os.path.join("bin", "extension-4.0", "webrtc")
 else:
-    result_path = os.path.join("bin", "extension", "webrtc")
+    result_path = os.path.join("bin", "extension-4.1", "webrtc")
 
 # Our includes and sources
 env.Append(CPPPATH=["src/"])
@@ -148,12 +152,14 @@ sources.append(
         "src/WebRTCLibPeerConnection.cpp",
     ]
 )
-if env["godot_version"] == "4":
-    sources.append("src/init_gdextension.cpp")
-else:
+if env["godot_version"] == "3":
     env.Append(CPPDEFINES=["GDNATIVE_WEBRTC"])
     sources.append("src/init_gdnative.cpp")
     add_sources(sources, "src/net/", "cpp")
+else:
+    sources.append("src/init_gdextension.cpp")
+    if env["godot_version"] == "4.0":
+        env.Append(CPPDEFINES=["GDEXTENSION_WEBRTC_40"])
 
 # Add our build tools
 for tool in ["openssl", "cmake", "rtc"]:
@@ -187,6 +193,10 @@ if env["godot_version"] == "3":
         },
     )
 else:
-    extfile = env.InstallAs(os.path.join(result_path, "webrtc.gdextension"), "misc/webrtc.gdextension")
+    extfile = env.Substfile(
+        os.path.join(result_path, "webrtc.gdextension"),
+        "misc/webrtc.gdextension",
+        SUBST_DICT={"{GODOT_VERSION}": env["godot_version"]},
+    )
 
 Default(extfile)

godot-cpp

@@ -1,7 +1,7 @@
-diff --git a/godot-cpp/SConstruct b/godot-cpp/SConstruct
+diff --git a/godot-cpp-4.0/SConstruct b/godot-cpp-4.0/SConstruct
 index 27ee137..32b425e 100644
---- a/godot-cpp/SConstruct
-+++ b/godot-cpp/SConstruct
+--- a/godot-cpp-4.0/SConstruct
++++ b/godot-cpp-4.0/SConstruct
 @@ -54,6 +54,8 @@ else:
  # Default tools with no platform defaults to gnu toolchain.
  # We apply platform specific toolchains via our custom tools.

godot-cpp-4.0

@@ -10,6 +10,7 @@ TYPE=${TYPE:-"webrtc"}
 
 mkdir -p ${DESTINATION}
 ls -R ${DESTINATION}
+ls -R ${ARTIFACTS}
 
 DESTDIR="${DESTINATION}/${VERSION}/${TYPE}"
 
@@ -18,10 +19,10 @@ mkdir -p ${DESTDIR}/lib
 find "${ARTIFACTS}" -wholename "*/${VERSION}/${TYPE}/lib/*" | xargs cp -t "${DESTDIR}/lib/"
 find "${ARTIFACTS}" -wholename "*/LICENSE*" | xargs cp -t "${DESTDIR}/"
 
-if [ $VERSION = "extension" ]; then
-    find "${ARTIFACTS}" -wholename "*/${VERSION}/${TYPE}/${TYPE}.gdextension" | head -n 1 | xargs cp -t "${DESTDIR}/"
-else
+if [ $VERSION = "gdnative" ]; then
     find "${ARTIFACTS}" -wholename "*/${VERSION}/${TYPE}/${TYPE}.tres" | head -n 1 | xargs cp -t "${DESTDIR}/"
+else
+    find "${ARTIFACTS}" -wholename "*/${VERSION}/${TYPE}/${TYPE}.gdextension" | head -n 1 | xargs cp -t "${DESTDIR}/"
 fi
 
 CURDIR=$(pwd)

misc/patches/scons_path.diff

@@ -1,6 +1,7 @@
 [configuration]
 
 entry_symbol = "webrtc_extension_init"
+compatibility_minimum = {GODOT_VERSION}
 
 [libraries]
 

misc/scripts/package_release.sh

@@ -180,7 +180,11 @@ Error WebRTCLibPeerConnection::_initialize(const Dictionary &p_config) {
 	return _create_pc(config);
 }
 
+#if defined(GDNATIVE_WEBRTC) || defined(GDEXTENSION_WEBRTC_40)
 Object *WebRTCLibPeerConnection::_create_data_channel(const String &p_channel, const Dictionary &p_channel_config) try {
+#else
+Ref<WebRTCDataChannel> WebRTCLibPeerConnection::_create_data_channel(const String &p_channel, const Dictionary &p_channel_config) try {
+#endif
 	ERR_FAIL_COND_V(!peer_connection, nullptr);
 
 	// Read config from dictionary

misc/webrtc.gdextension

@@ -79,7 +79,11 @@ class WebRTCLibPeerConnection : public godot::WebRTCPeerConnectionExtension {
 	SignalingState _get_signaling_state() const override;
 
 	godot::Error _initialize(const godot::Dictionary &p_config) override;
+#if defined(GDNATIVE_WEBRTC) || defined(GDEXTENSION_WEBRTC_40)
 	godot::Object *_create_data_channel(const godot::String &p_channel, const godot::Dictionary &p_channel_config) override;
+#else
+	godot::Ref<godot::WebRTCDataChannel> _create_data_channel(const godot::String &p_channel, const godot::Dictionary &p_channel_config) override;
+#endif
 	godot::Error _create_offer() override;
 	godot::Error _set_remote_description(const godot::String &type, const godot::String &sdp) override;
 	godot::Error _set_local_description(const godot::String &type, const godot::String &sdp) override;

src/WebRTCLibPeerConnection.cpp

@@ -66,7 +66,11 @@ void unregister_webrtc_extension_types(ModuleInitializationLevel p_level) {
 }
 
 extern "C" {
+#ifdef GDEXTENSION_WEBRTC_40
 GDExtensionBool GDE_EXPORT webrtc_extension_init(const GDExtensionInterface *p_interface, const GDExtensionClassLibraryPtr p_library, GDExtensionInitialization *r_initialization) {
+#else
+GDExtensionBool GDE_EXPORT webrtc_extension_init(const GDExtensionInterfaceGetProcAddress p_interface, const GDExtensionClassLibraryPtr p_library, GDExtensionInitialization *r_initialization) {
+#endif
 	GDExtensionBinding::InitObject init_obj(p_interface, p_library, r_initialization);
 
 	init_obj.register_initializer(register_webrtc_extension_types);