Update Build.yml

Author: baruchInsert-tech

.github/workflows/Build.yml

@@ -47,28 +47,33 @@ jobs:
           lfs: true
           submodules: true
 
-      # Use pre-built Cesium package approach
-      - name: Download and setup Cesium for Unity
+      - name: Setup .NET SDK
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '6.0.x'
+
+      - name: Install Native Build Dependencies
         run: |
-          # Download latest release from Cesium Unity releases
-          wget -O cesium-unity.tgz https://github.com/CesiumGS/cesium-unity/releases/latest/download/cesium-unity.tgz
-          
-          # Extract to Packages directory
-          mkdir -p Packages
-          cd Packages
-          tar -xzf ../cesium-unity.tgz
-          
-          # Ensure proper permissions
-          chmod -R 755 .
+          sudo apt-get update
+          sudo apt-get install -y cmake ninja-build clang g++ zip unzip
+
+      - name: Build Cesium native plugin
+        run: |
+          mkdir -p Assets/Plugins/CesiumForUnity/native~/build
+          cd Assets/Plugins/CesiumForUnity/native~/build
+          cmake .. -G Ninja -DCMAKE_BUILD_TYPE=Release
+          cmake --build . --config Release
+
+      # This is the new step to generate the C# bindings for Cesium.
+      - name: Build Cesium C# bindings (Reinterop)
+        run: dotnet publish Assets/Plugins/CesiumForUnity/Reinterop~ -o Assets/Plugins/CesiumForUnity
 
       - name: Cache Library folder
         uses: actions/cache@v3
         with:
           path: Library
-          key: Library-${{ matrix.targetPlatform }}-cesium
-          restore-keys: |
-            Library-${{ matrix.targetPlatform }}
-            Library-
+          key: Library-${{ matrix.targetPlatform }}
+          restore-keys: Library-
 
       - name: Free up disk space for Android (if needed)
         if: matrix.targetPlatform == 'Android'