Add web build

Author: mphe

.github/workflows/build.yml

@@ -17,20 +17,26 @@ on:
 jobs:
   build:
     runs-on: ${{ matrix.runner }}
-    name: ${{ matrix.platform }} ${{ matrix.target }} ${{ matrix.arch }} ${{ matrix.optimize }}
+    name: ${{ matrix.platform }} ${{ matrix.target }} ${{ matrix.arch }} ${{ matrix.optimize }} ${{ matrix.scons_args }}
+
     env:
-      BUILD_ID: ${{ matrix.platform }}-${{ matrix.target }}-${{ matrix.arch }}-${{ matrix.optimize }}
+      BUILD_ID: ${{ matrix.platform }}-${{ matrix.target }}-${{ matrix.arch }}-${{ matrix.optimize }}${{ matrix.scons_args && '-' || ''}}${{ matrix.scons_args }}
+      EM_VERSION: 3.1.64
+      EM_CACHE_FOLDER: "emsdk-cache"
+      SCONS_CACHE: .scons-cache
+
     strategy:
       fail-fast: false
       matrix:
         target: [ template_debug, template_release ]
-        identifier: [ windows, linux, macos, android, android_arm64 ]
+        identifier: [ windows, linux, macos, android, android_arm64, web_threads, web_nothreads ]
 
         include:
           # Defaults
           - runner: ubuntu-22.04
           - optimize: speed
           - arch: x86_64
+          - scons_args:
 
           # Debug build settings
           - target: template_debug
@@ -55,6 +61,16 @@ jobs:
             platform: android
             arch: arm64
 
+          - identifier: web_threads
+            platform: web
+            arch: wasm32
+            scons_args: threads=yes
+
+          - identifier: web_nothreads
+            platform: web
+            arch: wasm32
+            scons_args: threads=no
+
     steps:
       - name: Check settings
         if: ${{ matrix.platform == '' || matrix.target == '' || matrix.runner == '' || matrix.optimize == '' || matrix.arch == ''}}
@@ -95,6 +111,20 @@ jobs:
           ndk-version: r23c
           link-to-sdk: true
 
+      - name: (Web) Set up Emscripten cache
+        if: ${{ matrix.platform == 'web' }}
+        uses: actions/cache@v4
+        with:
+          path: ${{env.EM_CACHE_FOLDER}}
+          key: ${{env.EM_VERSION}}-${{ env.BUILD_ID }}
+
+      - name: (Web) Set up Emscripten
+        if: ${{ matrix.platform == 'web' }}
+        uses: mymindstorm/setup-emsdk@v14
+        with:
+          version: ${{env.EM_VERSION}}
+          actions-cache-folder: ${{env.EM_CACHE_FOLDER}}
+
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
@@ -113,35 +143,18 @@ jobs:
           submodules: recursive
           ref: ${{ inputs.git-ref }}
 
-#       TODO: Cache doesn't work yet. SCons rebuilds the objects even if they already exist. Could be caused by modification dates or extension_api.json.
-#             fetch-depth: 0 May be needed for cache. See: <https://github.com/actions/checkout/issues/468>.
-#      - name: Set up SCons cache
-#        uses: actions/cache@v3
-#        with:
-#          path: |
-#            ${{ github.workspace }}/.scons-cache/
-#            ${{ github.workspace }}/**/.sconsign.dblite
-#            ${{ github.workspace }}/godot-cpp/gen/
-#          key: ${{ matrix.platform }}-${{ github.ref }}-${{ github.sha }}
-#          restore-keys: |
-#            ${{ matrix.platform }}-${{ github.ref }}-${{ github.sha }}
-#            ${{ matrix.platform }}-${{ github.ref }}
-#            ${{ matrix.platform }}
-
       - name: Scons Cache
         id: scons-cache
         uses: actions/cache@v4
         with:
-          path: .scons-cache
+          path: ${{ env.SCONS_CACHE }}
           key: ${{ env.BUILD_ID }}
 
       - name: Compile extension
         shell: sh
-        env:
-          SCONS_CACHE: .scons-cache
         run: |
-          scons target='${{ matrix.target }}' platform='${{ matrix.platform }}' arch='${{ matrix.arch }}' optimize=${{ matrix.optimize }} -j2
-          ls -l demo/addons/*/bin/
+          scons -j2 target=${{ matrix.target }} platform=${{ matrix.platform }} arch=${{ matrix.arch }} optimize=${{ matrix.optimize }} lto=full ${{ matrix.scons_args }}
+          ls -l demo/addons/ropesim/bin/
 
       - name: Prepare files for publish
         shell: sh

.gitignore

@@ -11,6 +11,7 @@ compile_commands.json
 *.exe
 *.dylib
 *.o
+*.wasm
 
 # Godot-specific ignores
 .godot/

compile_debug.sh

@@ -1,3 +1,5 @@
 #!/usr/bin/env bash
 
 SCONS_CACHE="$PWD/.scons_cache_debug" scons compiledb=yes optimize=debug use_llvm=yes "$@"
+
+# platform=web threads=no

demo/addons/ropesim/libropesim.gdextension

@@ -15,3 +15,7 @@ android.debug.x86_64 = "res://addons/ropesim/bin/libropesim.android.template_deb
 android.release.x86_64 = "res://addons/ropesim/bin/libropesim.android.template_release.x86_64.so"
 android.debug.arm64 = "res://addons/ropesim/bin/libropesim.android.template_debug.arm64.so"
 android.release.arm64 = "res://addons/ropesim/bin/libropesim.android.template_release.arm64.so"
+web.debug.wasm32 = "res://addons/ropesim/bin/libropesim.web.template_debug.wasm32.wasm"
+web.release.wasm32 = "res://addons/ropesim/bin/libropesim.web.template_release.wasm32.wasm"
+web.debug.wasm32.nothreads = "res://addons/ropesim/bin/libropesim.web.template_debug.wasm32.nothreads.wasm"
+web.release.wasm32.nothreads = "res://addons/ropesim/bin/libropesim.web.template_release.wasm32.nothreads.wasm"