Emscripten: build in CI

.github/workflows/ci.yml

@@ -627,6 +627,28 @@ jobs:
           name: OpenRCT2-${{ needs.build_variables.outputs.name }}-Android
           path: artifacts
           if-no-files-found: error
+  emscripten:
+    name: Emscripten
+    runs-on: ubuntu-latest
+    needs: [check-code-formatting, build_variables]
+    container: openrct2/openrct2-build:19-emscripten
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: ccache
+        uses: hendrikmuhs/ccache-action@v1.2.13
+        with:
+          key: emscripten
+      - name: Install GCC problem matcher
+        uses: ammaraskar/gcc-problem-matcher@master
+      - name: Build OpenRCT2
+        run: |
+          . scripts/setenv
+          build-emscripten
+      - name: Upload artifacts (CI)
+        uses: actions/upload-artifact@v4
+        with:
+          name: OpenRCT2-${{ needs.build_variables.outputs.name }}-emscripten
   release:
     name: Release
     runs-on: ubuntu-latest

scripts/build-emscripten

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+mkdir -p build
+cd build
+
+START_DIR=$(pwd)
+SPEEXDSP_ROOT=/ext/speexdsp
+ICU_ROOT=/ext/icu/icu4c/source
+LIBZIP_ROOT=/ext/libzip
+JSON_DIR=/usr/include/nlohmann/
+
+emcmake cmake ../ \
+    -G Ninja \
+	-DDISABLE_NETWORK=ON \
+	-DDISABLE_HTTP=ON \
+	-DDISABLE_TTF=ON \
+	-DDISABLE_FLAC=ON \
+	-DDISABLE_DISCORD_RPC=ON \
+	-DCMAKE_SYSTEM_NAME=Emscripten \
+	-DCMAKE_BUILD_TYPE=Release \
+	-DSPEEXDSP_INCLUDE_DIR="$SPEEXDSP_ROOT/include/" \
+	-DSPEEXDSP_LIBRARY="$SPEEXDSP_ROOT/libspeexdsp/.libs/libspeexdsp.a" \
+	-DICU_INCLUDE_DIR="$ICU_ROOT/common" \
+	-DICU_DATA_LIBRARIES=$ICU_ROOT/lib/libicuuc.so \
+	-DICU_DT_LIBRARY_RELEASE="$ICU_ROOT/stubdata/libicudata.so" \
+	-DLIBZIP_LIBRARIES="$LIBZIP_ROOT/build/lib/libzip.a" \
+	-DEMSCRIPTEN_FLAGS="-s USE_SDL=2 -s USE_BZIP2=1 -s USE_LIBPNG=1 -pthread -O3" \
+	-DEMSCRIPTEN_LDFLAGS="-Wno-pthreads-mem-growth -s ASYNCIFY -s FULL_ES3 -s SAFE_HEAP=0 -s ALLOW_MEMORY_GROWTH=1 -s MAXIMUM_MEMORY=4GB -s INITIAL_MEMORY=2GB -s MAX_WEBGL_VERSION=2 -s PTHREAD_POOL_SIZE=120 -pthread -sEXPORTED_RUNTIME_METHODS=FS,callMain,UTF8ToString,stringToNewUTF8 -lidbfs.js --use-preload-plugins -s MODULARIZE=1 -s 'EXPORT_NAME=\"OPENRCT2_WEB\"'"
+
+emmake ninja
+
+rm -rf www/
+mkdir -p www/
+cd www/
+cp -r ../openrct2.* ./
+cp -r ../../emscripten/static/* ./