mirror of
https://github.com/NoelFB/blah.git
synced 2024-11-29 17:08:56 +08:00
52 lines
1.7 KiB
Markdown
52 lines
1.7 KiB
Markdown
## blah
|
|
a small C++ game framework for 2D games.
|
|
|
|
this will likely see breaking changes.
|
|
|
|
#### prerequisites
|
|
- A C++17 compiler and CMake
|
|
- Only an SDL2 `platform` [is done](https://github.com/NoelFB/blah/blob/master/private/blah/internal/platform_sdl2.cpp). CMake will need to find SDL2 via `SDL2_INCLUDE_DIRS` and `SDL2_LIBRARIES`
|
|
- Only an OpenGL `graphics` [is done](https://github.com/NoelFB/blah/blob/master/private/blah/internal/graphics_opengl.cpp), so it currently requires OpenGL.
|
|
|
|
#### notes
|
|
- There are probably lots of small bugs as this is highly untested. Best used as a learning resource for now.
|
|
- There's a custom "vector" class which is called List and Stacklist which may later be replaced with std::vector
|
|
- There's no Shader abstraction, so the [Sprite Batcher](https://github.com/NoelFB/blah/blob/master/public/blah/drawing/batch.h) has hard-coded GLSL. This will need to change.
|
|
- The rendering layer may be replaced with [FNA3D](https://github.com/FNA-XNA/FNA3D), [BGFX](https://github.com/bkaradzic/bgfx), [Sokol](https://github.com/floooh/sokol), or something else.
|
|
- There's no Audio layer implementation yet.
|
|
|
|
|
|
#### a sample application
|
|
|
|
```cpp
|
|
#include <blah.h>
|
|
using namespace Blah;
|
|
|
|
Batch batch;
|
|
|
|
void render()
|
|
{
|
|
Graphics::clear(Graphics::backbuffer, 0x00000000);
|
|
|
|
batch.push_matrix(Mat3x2::create_transform(Vec2(App::draw_width(), App::draw_height()) / 2, Vec2::zero, Vec2::one, Time::elapsed * Calc::TAU));
|
|
batch.rect(Rect(-32, -32, 64, 64), 0xff0000);
|
|
batch.pop_matrix();
|
|
|
|
batch.render(Graphics::backbuffer);
|
|
batch.clear();
|
|
}
|
|
|
|
int main()
|
|
{
|
|
Config config;
|
|
config.name = "blah app";
|
|
config.width = 1280;
|
|
config.height = 720;
|
|
config.on_render = render;
|
|
|
|
App::run(&config);
|
|
return 0;
|
|
}
|
|
|
|
```
|