mirror of
https://github.com/NoelFB/blah.git
synced 2024-11-29 17:08:56 +08:00
68 lines
2.4 KiB
Markdown
68 lines
2.4 KiB
Markdown
## blah
|
|
A small 2D C++ Game Framework, using few dependencies and simple code to mainain easy building and portability.
|
|
|
|
**☆ This will likely see breaking changes! Use at your own risk! ☆**
|
|
|
|
#### building
|
|
- Requires C++17 and CMake 3.12+
|
|
- A single *Platform* backend must be enabled:
|
|
- [SDL2](https://github.com/NoelFB/blah/blob/master/src/internal/platform_sdl2.cpp) can be enabled in CMake with `PLATFORM_SDL2`, and setting `SDL2_INCLUDE_DIRS` and `SDL2_LIBRARIES`
|
|
- [WIN32](https://github.com/NoelFB/blah/blob/master/src/internal/platform_win32.cpp) (UNFINISHED) can be enabled in CMake with `PLATFORM_WIN32`.
|
|
- Additional backends can be added by implementing the [Platform Backend](https://github.com/NoelFB/blah/blob/master/src/internal/platform.h)
|
|
- A single *Graphics* backend must be enabled:
|
|
- [OpenGL](https://github.com/NoelFB/blah/blob/master/src/internal/graphics_gl.cpp) can be enabled in CMake with `GRAPHICS_OPENGL`.
|
|
- [D3D11](https://github.com/NoelFB/blah/blob/master/src/internal/graphics_d3d11.cpp) can be enabled in CMake with `GRAPHICS_D3D11`.
|
|
- Additional backends can be added by implementing the [Graphics Backend](https://github.com/NoelFB/blah/blob/master/src/internal/graphics.h).
|
|
|
|
#### notes
|
|
- There's no Shader abstraction, so the [Sprite Batcher](https://github.com/NoelFB/blah/blob/master/src/graphics/batch.cpp) has hard-coded GLSL/HLSL. This will need to change.
|
|
- Only floatN/mat3x2/mat4x4 uniforms are supported.
|
|
- There's no Audio API or backend implementation yet.
|
|
- No threaded rendering so it will explode if you try that.
|
|
|
|
#### a sample application
|
|
|
|
```cpp
|
|
#include <blah.h>
|
|
using namespace Blah;
|
|
|
|
Batch batch;
|
|
TextureRef tex;
|
|
|
|
void startup()
|
|
{
|
|
tex = Texture::create("player.png");
|
|
}
|
|
|
|
void render()
|
|
{
|
|
App::backbuffer->clear(Color::black);
|
|
|
|
auto center = Vec2f(App::backbuffer->width(), App::backbuffer->height()) / 2;
|
|
auto rotation = Time::seconds * Calc::TAU;
|
|
auto transform = Mat3x2f::create_transform(center, Vec2f::zero, Vec2f::one, rotation);
|
|
|
|
batch.push_matrix(transform);
|
|
batch.rect(Rectf(-32, -32, 64, 64), Color::red);
|
|
batch.tex(tex, Vec2f(64, 0), Color::white);
|
|
batch.pop_matrix();
|
|
|
|
batch.render();
|
|
batch.clear();
|
|
}
|
|
|
|
int main()
|
|
{
|
|
Config config;
|
|
config.name = "blah app";
|
|
config.width = 1280;
|
|
config.height = 720;
|
|
config.on_startup = startup;
|
|
config.on_render = render;
|
|
|
|
App::run(&config);
|
|
return 0;
|
|
}
|
|
|
|
```
|