mirror of https://github.com/auygun/kaliber.git
91 lines
2.7 KiB
Markdown
91 lines
2.7 KiB
Markdown
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A simple, cross-platform 2D game engine with OpenGL and Vulkan renderers.
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Supports Linux and Android platforms.
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This is a personal hobby project. I've published a little game on
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[Google Play](https://play.google.com/store/apps/details?id=com.woom.game)
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based on this engine. Full game code and assets are included in this repository.
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## Pre-requisites:
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This project uses **GN build system** for all platforms except Android
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(I want to add support for APKs, Java code etc. to the GN configuration and use
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it for all platforms). \
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Building GN from source:
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https://gn.googlesource.com/gn/ \
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Pre-built GN binaries:
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https://chrome-infra-packages.appspot.com/p/gn/gn/
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Linux is the supported host platform to build Android. **Gradle**,
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**Android SDK** and **NDK** are required. If you prefer, you can install
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**Android Studio** which
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includes all the requirements.
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## Building from the command-line:
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### All platforms except Android:
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Setup:
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```text
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gn gen out/release
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gn gen --args='is_debug=true' out/debug
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```
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Building and running:
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```text
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ninja -C out/debug
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./out/debug/hello_world
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./out/debug/demo
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```
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### Android:
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```text
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cd build/android
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./gradlew :app:installDebug
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```
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## Third-party libraries:
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[glew](https://github.com/nigels-com/glew),
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[jsoncpp](https://github.com/open-source-parsers/jsoncpp),
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[minimp3](https://github.com/lieff/minimp3),
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[oboe](https://github.com/google/oboe),
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[stb](https://github.com/nothings/stb),
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[texture-compressor](https://github.com/auygun/kaliber/tree/master/src/third_party/texture_compressor),
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[minizip](https://github.com/madler/zlib/tree/master/contrib/minizip),
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[glslang](https://github.com/KhronosGroup/glslang),
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[spirv-reflect](https://github.com/KhronosGroup/SPIRV-Reflect),
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[vma](https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator),
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[vulkan-sdk](https://vulkan.lunarg.com),
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[volk](https://github.com/zeux/volk)
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## Hello World example:
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Shows a smoothly rotating "Hello Wolrd!".
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```cpp
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class HelloWorld final : public eng::Game {
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public:
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~HelloWorld() final = default;
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bool Initialize() final {
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eng::Engine::Get().SetImageSource(
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"hello_world_image",
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std::bind(&eng::Engine::Print, &eng::Engine::Get(), "Hello World!",
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base::Vector4f(1, 1, 1, 0)));
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hello_world_.Create("hello_world_image");
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hello_world_.SetVisible(true);
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animator_.Attach(&hello_world_);
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animator_.SetRotation(base::PI2f, 3,
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std::bind(base::SmootherStep, std::placeholders::_1));
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animator_.Play(eng::Animator::kRotation, true);
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return true;
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}
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private:
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eng::ImageQuad hello_world_;
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eng::Animator animator_;
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};
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DECLARE_GAME_BEGIN
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DECLARE_GAME(HelloWorld)
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DECLARE_GAME_END
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```
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