build.yml

name: Build

on:
  push:
  workflow_dispatch:

jobs:
  windows:
    strategy:
      fail-fast: false
      matrix:
        platform: [x86, x64]
    runs-on: windows-latest
    env:
      PLATFORM: ${{ matrix.platform }}
      BUILD_CONFIGURATION: Release
      SOLUTION_FILE_PATH: .
      VCPKG_BINARY_SOURCES: 'clear;x-gha,readwrite'

    steps:
    - uses: actions/checkout@v4

    - name: Checkout NAS2D
      run: git submodule update --init nas2d-core/

    - name: Add MSBuild to PATH
      uses: microsoft/setup-msbuild@v1.3.2

    - name: Export GitHub Actions cache environment variables
      uses: actions/github-script@v7
      with:
        script: |
          core.exportVariable('ACTIONS_CACHE_URL', process.env.ACTIONS_CACHE_URL || '');
          core.exportVariable('ACTIONS_RUNTIME_TOKEN', process.env.ACTIONS_RUNTIME_TOKEN || '');

    - name: Restore vcpkg dependency cache
      uses: actions/cache@v4
      id: cache
      with:
        path: vcpkg_installed
        key: vcpkgCache-${{ runner.os }}-${{ matrix.platform }}-${{ hashFiles('vcpkg.json') }}

    - name: Pre-install vcpkg dependencies
      run: |
        vcpkg install

    - name: Copy vcpkg cache to NAS2D folder
      run: |
        xcopy vcpkg_installed nas2d-core /s /e

    - name: Set NAS2D modification time
      shell: bash
      run: |
        nas2dSha=$(git submodule status -- nas2d-core/ | awk '{print $1}')
        echo "nas2dSha=${nas2dSha}" >> $GITHUB_ENV

        # Set last modification times to that of last build's committer time
        # The committer time should pre-date any cached output modification time
        commitTime=$(git -C nas2d-core/ log -1 --format="%cI")
        echo "commitTime=${commitTime}"
        find nas2d-core/ -type f -exec touch -d "${commitTime}" '{}' +

    - name: Restore NAS2D cache
      uses: actions/cache@v4
      with:
        path: nas2d-core/.build/
        key: nas2dCache-${{ runner.os }}-${{ matrix.platform }}-${{ env.nas2dSha }}

    - name: Restore incremental build cache
      uses: actions/cache/restore@v4
      if: github.ref != format('refs/heads/{0}', github.event.repository.default_branch)
      with:
        path: .build
        key: buildCache-${{ runner.os }}-${{ matrix.platform }}-${{ github.sha }}
        restore-keys: buildCache-${{ runner.os }}-${{ matrix.platform }}-

    - name: Set modification times
      if: ${{ hashFiles('.build/lastBuildSha.txt') != '' }}
      shell: bash
      run: |
          # Determine SHA of last cached build (ignore cache if not marked)
          lastBuildSha=$(<.build/lastBuildSha.txt) || exit 0
          echo "Last build SHA: ${lastBuildSha}"

          # Fetch source code for last build
          # (exit successfully if not found, cache will be ignored)
          git fetch --depth=1 origin "${lastBuildSha}" || exit 0
          git switch --detach "${lastBuildSha}"

          # Set last modification times to that of last build's committer time
          # The committer time should pre-date any cached output modification time
          commitTime=$(git log -1 --format="%cI")
          echo "commitTime=${commitTime}"
          find . -type f -exec touch -d "${commitTime}" '{}' +

          # Re-check out current branch, which updates last modification times of modified files
          git switch -

    - name: Set build SHA
      shell: bash
      run: |
          # Save copy of current SHA to be cached, and used for reference in future builds
          mkdir --parents .build/
          echo "${{ github.sha }}" > .build/lastBuildSha.txt

    - name: Build NAS2D
      # Add additional options to the MSBuild command line here (like platform or verbosity level).
      # See https://docs.microsoft.com/visualstudio/msbuild/msbuild-command-line-reference
      run: |
        vcpkg integrate install
        msbuild /maxCpuCount /warnAsError /property:Configuration=${{env.BUILD_CONFIGURATION}} ${{env.SOLUTION_FILE_PATH}} /target:NAS2D

    - name: Save build cache - NAS2D
      uses: actions/cache/save@v4
      with:
        path: nas2d-core/.build/
        key: nas2dCache-${{ runner.os }}-${{ matrix.platform }}-${{ env.nas2dSha }}

    - name: Build OPHD
      # Add additional options to the MSBuild command line here (like platform or verbosity level).
      # See https://docs.microsoft.com/visualstudio/msbuild/msbuild-command-line-reference
      run: |
        vcpkg integrate install
        msbuild /maxCpuCount /warnAsError /property:Configuration=${{env.BUILD_CONFIGURATION}} ${{env.SOLUTION_FILE_PATH}}

    - name: Save incremental build cache - OPHD
      uses: actions/cache/save@v4
      with:
        path: .build
        key: buildCache-${{ runner.os }}-${{ matrix.platform }}-${{ github.sha }}