Implement CMake build scripts and github actions.

.github/workflows/linux.yml

@@ -0,0 +1,54 @@
+name: Linux
+permissions:
+  contents: read
+
+on:
+  push:
+    # Always trigger CI on push
+  pull_request:
+    branches: [ $default-branch ]
+
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+        buildtype: [Debug, Release]
+    env:
+      BUILD_TYPE: ${{ matrix.buildtype }}
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+    # So we can skip the `data` submodule.
+      #with:
+        #submodules: 'recursive'
+    # Same as above, but skip the `data` submodule.
+    - name: Checkout submodules
+      run: git -c submodule."data".update=none submodule update --init --recursive
+
+    - name: Install libraries
+      run: sudo apt update && sudo apt install -y build-essential freeglut3-dev
+
+    - name: Configure CMake
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      run: cmake -B ${{runner.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DENABLE_LTO=FALSE
+
+    - name: Build
+      # Build your program with the given configuration
+      run: cmake --build ${{runner.workspace}}/build --config ${{env.BUILD_TYPE}}
+
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{env.BUILD_TYPE}}-linux-x64--artifact${{github.sha}}
+        path: bin/bin_unix
+
+    - name: Test
+      working-directory: ${{runner.workspace}}/build
+      # Execute tests defined by the CMake configuration.  
+      # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
+      run: ctest -C ${{env.BUILD_TYPE}}
+

.github/workflows/mingw.yml

@@ -0,0 +1,58 @@
+name: MinGW
+permissions:
+  contents: read
+
+on:
+  push:
+    # Always trigger CI on push
+  pull_request:
+    branches: [ $default-branch ]
+
+
+jobs:
+  build:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+        buildtype: [Debug, Release]
+    env:
+      BUILD_TYPE: ${{ matrix.buildtype }}
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+    # So we can skip the `data` submodule.
+      #with:
+        #submodules: 'recursive'
+    # Same as above, but skip the `data` submodule.
+    - name: Checkout submodules
+      run: git -c submodule."data".update=none submodule update --init --recursive
+
+    - name: Set up MinGW
+      uses: egor-tensin/setup-mingw@v3
+      with:
+        platform: x64
+
+    - name: Configure CMake
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      run: cmake -B ${{runner.workspace}}/build -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DENABLE_LTO=FALSE
+
+    - name: Build
+      # Build your program with the given configuration
+      run: cmake --build ${{runner.workspace}}/build --config ${{env.BUILD_TYPE}}
+
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{env.BUILD_TYPE}}-mingw-x64-artifact${{github.sha}}
+        path: |
+          bin/bin64
+          !bin/bin64/*.dll
+
+    - name: Test
+      working-directory: ${{runner.workspace}}/build
+      # Execute tests defined by the CMake configuration.  
+      # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
+      run: ctest -C ${{env.BUILD_TYPE}}
+

.github/workflows/windows.yml

@@ -0,0 +1,53 @@
+name: Windows
+permissions:
+  contents: read
+
+on:
+  push:
+    # Always trigger CI on push
+  pull_request:
+    branches: [ $default-branch ]
+
+
+jobs:
+  build:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+        buildtype: [Debug, Release]
+    env:
+      BUILD_TYPE: ${{ matrix.buildtype }}
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+    # So we can skip the `data` submodule.
+      #with:
+        #submodules: 'recursive'
+    # Same as above, but skip the `data` submodule.
+    - name: Checkout submodules
+      run: git -c submodule."data".update=none submodule update --init --recursive
+
+    - name: Configure CMake
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      run: cmake -B ${{runner.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DENABLE_LTO=FALSE
+
+    - name: Build
+      # Build your program with the given configuration
+      run: cmake --build ${{runner.workspace}}/build --config ${{env.BUILD_TYPE}}
+
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: ${{env.BUILD_TYPE}}-msvc-x64-artifact${{github.sha}}
+        path: |
+          bin/bin64
+          !bin/bin64/*.dll
+
+    - name: Test
+      working-directory: ${{runner.workspace}}/build
+      # Execute tests defined by the CMake configuration.  
+      # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
+      run: ctest -C ${{env.BUILD_TYPE}}
+

.gitignore

@@ -26,6 +26,8 @@ source/vcpp/x86/
 .vscode/
 Debug*/
 Release*/
+.*-Debug/
+.*-Release/
 Profile*/
 autoexec.cfg
 master.cfg

.gitmodules

@@ -1,3 +1,21 @@
 [submodule "data"]
 	path = data
 	url = https://github.com/project-valhalla/data.git
+[submodule "external/SDL2"]
+	path = external/SDL2
+	url = https://github.com/libsdl-org/SDL.git
+	branch = SDL2
+[submodule "external/SDL_image"]
+	path = external/SDL_image
+	url = https://github.com/libsdl-org/SDL_image.git
+	branch = SDL2
+[submodule "external/SDL_mixer"]
+	path = external/SDL_mixer
+	url = https://github.com/libsdl-org/SDL_mixer.git
+	branch = SDL2
+[submodule "external/doctest"]
+	path = external/doctest
+	url = https://github.com/onqtam/doctest.git
+[submodule "external/libmaxminddb"]
+	path = external/libmaxminddb
+	url = https://github.com/maxmind/libmaxminddb.git