Add GitHub Actions CI and CMake build support

.github/docker/Dockerfile

@@ -0,0 +1,11 @@
+FROM ubuntu:24.04
+
+RUN apt-get update && apt-get install -y \
+        ninja-build \
+        g++ \
+        git \
+        qt6-base-dev \
+        qt6-tools-dev \
+        qt6-tools-dev-tools \
+        qt6-multimedia-dev \
+    && rm -rf /var/lib/apt/lists/*

.github/workflows/ci.yml

@@ -0,0 +1,102 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+    tags: ['v*']
+  pull_request:
+    branches: [main]
+
+jobs:
+  build-linux:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4.2.2
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y ninja-build g++ qt6-base-dev qt6-tools-dev qt6-tools-dev-tools qt6-multimedia-dev
+
+      - name: Build
+        run: |
+          cmake -B build -S editor -DCMAKE_BUILD_TYPE=Release -G Ninja
+          cmake --build build --parallel
+
+      - name: Package
+        run: |
+          mkdir -p staging
+          cp build/waller staging/
+          cp README.md MANUAL.md LICENSE staging/
+          [ -d maps ] && cp -r maps staging/
+          tar -czf waller-linux.tar.gz -C staging .
+
+      - name: Upload tarball
+        uses: actions/upload-artifact@v4.6.2
+        with:
+          name: waller-ubuntu
+          path: waller-linux.tar.gz
+
+  build-windows:
+    runs-on: windows-latest
+
+    steps:
+      - uses: actions/checkout@v4.2.2
+
+      - name: Install Qt6
+        uses: jurplel/install-qt-action@v4
+        with:
+          version: '6.8.*'
+          arch: win64_msvc2022_64
+          modules: 'qtmultimedia'
+          cache: true
+
+      - name: Build
+        run: |
+          cmake -B build -S editor -DCMAKE_BUILD_TYPE=Release
+          cmake --build build --config Release --parallel
+
+      - name: Deploy
+        run: |
+          mkdir deploy
+          copy build\Release\waller.exe deploy\
+          windeployqt6 --no-quick-import --release --no-system-d3d-compiler --no-system-dxc-compiler --no-compiler-runtime --no-opengl-sw --no-translations deploy\waller.exe
+          copy README.md deploy\
+          copy MANUAL.md deploy\
+          copy LICENSE deploy\
+          if (Test-Path maps) { Copy-Item -Recurse maps deploy\ }
+
+      - name: Package
+        run: Compress-Archive -Path deploy\* -DestinationPath waller-windows.zip
+
+      - name: Upload ZIP
+        uses: actions/upload-artifact@v4.6.2
+        with:
+          name: waller-windows
+          path: waller-windows.zip
+
+  release:
+    needs: [build-linux, build-windows]
+    runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/v')
+    permissions:
+      contents: write
+
+    steps:
+      - name: Download tarball
+        uses: actions/download-artifact@v4.2.1
+        with:
+          name: waller-ubuntu
+          path: artifacts/
+
+      - name: Download ZIP
+        uses: actions/download-artifact@v4.2.1
+        with:
+          name: waller-windows
+          path: artifacts/
+
+      - name: Create release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: artifacts/*

editor/CMakeLists.txt

@@ -0,0 +1,67 @@
+cmake_minimum_required(VERSION 3.16)
+project(waller LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTOUIC ON)
+set(CMAKE_AUTORCC ON)
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets SpatialAudio)
+
+set(SOURCES
+    main.cpp
+    editor.cpp
+    walker.cpp
+    mainwindow.cpp
+    renderwindow.cpp
+    wdgmapeditor.cpp
+    wdgmapview.cpp
+    wdgtexselector.cpp
+    wdgtexview.cpp
+    ../common/engine/renderer.cpp
+    ../common/engine/renderer_config.cpp
+    ../common/engine/audio.cpp
+    ../common/engine/map.cpp
+    ../common/engine/map_io.cpp
+    ../common/engine/tags.cpp
+    ../common/engine/env.cpp
+    ../common/engine/workerpool.cpp
+    ../common/engine/gamepad.cpp
+    mainwindow.ui
+    renderwindow.ui
+    resources.qrc
+)
+
+if(WIN32)
+    list(APPEND SOURCES editor.rc)
+endif()
+
+qt_add_executable(waller WIN32 ${SOURCES})
+
+target_include_directories(waller PRIVATE
+    ${CMAKE_CURRENT_SOURCE_DIR}
+    ../common/engine
+    ../common/game
+)
+
+target_link_libraries(waller PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+    Qt6::SpatialAudio
+)
+
+if(WIN32)
+    target_link_libraries(waller PRIVATE xinput winmm ws2_32)
+endif()
+
+if(MSVC)
+    target_compile_options(waller PRIVATE /W4 /MP /WX-)
+    target_compile_options(waller PRIVATE $<$<CONFIG:Release>:/O2>)
+else()
+    target_compile_options(waller PRIVATE -msse4 -save-temps -Wall -Wextra)
+    target_compile_options(waller PRIVATE $<$<CONFIG:Release>:-O2>)
+    target_link_options(waller PRIVATE $<$<CONFIG:Release>:-s>)
+endif()

editor/main.cpp

@@ -21,14 +21,24 @@
 
 #include <stdint.h>
 #include <stdio.h>
+#ifdef _MSC_VER
+#include <intrin.h>
+#else
 #include <cpuid.h>
+#endif
 
 /*****************************************************************************/
 inline bool hasSSE41()
 {
+#ifdef _MSC_VER
+    int cpuInfo[4];
+    __cpuid(cpuInfo, 1);
+    return (cpuInfo[2] & (1 << 19)) != 0; // SSE4.1 is bit 19 of ECX
+#else
     uint32_t eax, ebx, ecx, edx;
     __cpuid(1, eax, ebx, ecx, edx);
     return (ecx & (1 << 19)) != 0; // SSE4.1 is bit 19 of ECX
+#endif
 }
 
 /*****************************************************************************/

editor/waller.pro

@@ -3,9 +3,15 @@ QT += core gui spatialaudio
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
 CONFIG += c++17
-QMAKE_CXXFLAGS_RELEASE *= -O2
-QMAKE_LFLAGS_RELEASE *= -s
-QMAKE_CXXFLAGS += -msse4 -save-temps -Wall -Wextra
+
+win32-msvc* {
+    QMAKE_CXXFLAGS_RELEASE *= /O2
+    QMAKE_CXXFLAGS += /W4 /MP
+} else {
+    QMAKE_CXXFLAGS_RELEASE *= -O2
+    QMAKE_LFLAGS_RELEASE   *= -s
+    QMAKE_CXXFLAGS += -msse4 -save-temps -Wall -Wextra
+}
 
 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000