AppImage builder plus GH actions

Included also a .desktop file and an icon.

.github/workflows/appimage.yml

@@ -0,0 +1,35 @@
+name: C/C++ AppImage
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build-appimage:
+
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: 'true'
+      - name: install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y build-essential libglfw3-dev libglfw3 libglew-dev libglm-dev libpng-dev libopenal-dev cmake squashfs-tools
+      - name: configure
+        run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DVOXELENGINE_BUILD_APPDIR=1
+      - name: build
+        run: cmake --build build -t install
+      - name: Build AppImage
+        uses: AppImageCrafters/build-appimage-action@fe2205a4d6056be47051f7b1b3811106e9814910
+        env:
+          UPDATE_INFO: gh-releases-zsync|MihailRis|VoxelEngine-Cpp|latest|*x86_64.AppImage.zsync
+        with:
+          recipe: AppImageBuilder.yml
+      - uses: actions/upload-artifact@v2
+        with:
+          name: AppImage
+          path: './*.AppImage*'

.gitignore

@@ -27,3 +27,7 @@ Debug/voxel_engine
 .project
 .git
 /Default/
+AppDir
+appimage-build/
+
+*~

AppImageBuilder.yml

@@ -0,0 +1,75 @@
+version: 1
+AppDir:
+  path: AppDir
+  app_info:
+    id: VoxelEngine
+    name: VoxelEngine
+    icon: VoxelEngine
+    version: latest
+    exec: usr/bin/VoxelEngine
+    exec_args: --dir $HOME --res $APPDIR/usr/share/VoxelEngine/res $@
+  apt:
+    arch: amd64
+    sources:
+    - sourceline: deb http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
+      key_url: 'http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x3b4fe6acc0b21f32'
+      key_url: 'http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x871920D1991BC93C'
+    - sourceline: deb http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
+    - sourceline: deb http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
+    - sourceline: deb http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
+    include:
+    - libbz2-1.0
+    - libexpat1
+    - libfam0
+    - libgcrypt20
+    - libglfw3
+    - libglew2.1
+    - libpng16-16
+    - libopenal1
+    - libopengl0
+    - libasound2
+    - libglx0
+    exclude:
+      - hicolor-icon-theme
+      - sound-theme-freedesktop
+      - perl
+      - perl-base
+      - kwayland-data
+      - libwacom2
+      - libasound2
+      - breeze
+      - breeze-icon-theme
+      - breeze-cursor-theme
+      - kwin-style-breeze
+      - kde-style-breeze
+      - plasma-integration
+  files:
+    exclude:
+    - usr/share/man
+    - usr/share/doc/*/README.*
+    - usr/share/doc/*/changelog.*
+    - usr/share/doc/*/NEWS.*
+    - usr/share/doc/*/TODO.*
+  test:
+    fedora:
+      image: appimagecrafters/tests-env:fedora-30
+      command: ./AppRun
+      use_host_x: true
+    debian:
+      image: appimagecrafters/tests-env:debian-stable
+      command: ./AppRun
+      use_host_x: true
+    arch:
+      image: appimagecrafters/tests-env:archlinux-latest
+      command: ./AppRun
+      use_host_x: true
+    centos:
+      image: appimagecrafters/tests-env:centos-7
+      command: ./AppRun
+      use_host_x: true
+    ubuntu:
+      image: appimagecrafters/tests-env:ubuntu-xenial
+      command: ./AppRun
+      use_host_x: true
+AppImage:
+  arch: x86_64

CMakeLists.txt

@@ -1,13 +1,34 @@
 cmake_minimum_required(VERSION 3.15)
 project(VoxelEngine)
 
+option(VOXELENGINE_BUILD_APPDIR OFF)
+
 set(CMAKE_CXX_STANDARD 17)
 
 file(GLOB_RECURSE HEADERS ${CMAKE_CURRENT_SOURCE_DIR}/src/*.hpp)
 file(GLOB_RECURSE SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp)
 
 add_executable(${PROJECT_NAME} ${HEADERS} ${SOURCES})
 
+if(VOXELENGINE_BUILD_APPDIR)
+  file(MAKE_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/usr/bin)
+  file(MAKE_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/usr/lib)
+  file(MAKE_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/usr/share/icons/hicolor/256x256)
+  file(MAKE_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/usr/share/applications)
+  file(MAKE_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/usr/share/VoxelEngine)
+  file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/res DESTINATION ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/usr/share/VoxelEngine)
+  file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/VoxelEngine.png DESTINATION ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/usr/share/icons/hicolor/256x256)
+  file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/VoxelEngine.png DESTINATION ${CMAKE_CURRENT_SOURCE_DIR}/AppDir)
+  file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/VoxelEngine.png DESTINATION ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/.dirIcon)
+  file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/VoxelEngine.desktop DESTINATION ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/usr/share/applications)
+  file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/VoxelEngine.desktop DESTINATION ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/)
+  set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/usr/lib)
+  set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/usr/lib)
+  set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/usr/bin)
+  install(TARGETS VoxelEngine DESTINATION ${CMAKE_CURRENT_SOURCE_DIR}/AppDir/usr/bin)
+endif()
+
+
 if(MSVC)
   target_compile_options(${PROJECT_NAME} PRIVATE /W4  /O2)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /source-charset:UTF-8")
@@ -50,3 +71,4 @@ endif()
 target_link_libraries(${PROJECT_NAME} ${LIBS} glfw OpenGL::GL ${OPENAL_LIBRARY} GLEW::GLEW ${PNGLIB})
 
 file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/res DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
+

VoxelEngine.desktop

@@ -0,0 +1,10 @@
+[Desktop Entry]
+Version=1.0
+Type=Application
+Name=VoxelEngine
+Comment=Minecraft-like game engine in C++ with OpenGL
+TryExec=VoxelEngine
+Exec=VoxelEngine
+Icon=VoxelEngine
+MimeType=image/x-foo;
+Categories=Game;