41 lines
1.4 KiB
Markdown
41 lines
1.4 KiB
Markdown
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# sdl_nyan
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Tiny SDL2-based library and demo application for rendering animated nyan cats.
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Rainbows not included, cats only!
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## Requirements and building
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Requires CMake>=3.14, SDL2 and a c11/c++17 capable compiler.
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git clone https://github.com/oxmox42/sdl_nyan
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mkdir sdl_nyan/build && cd sdl_nyan/build/
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cmake .. && make
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./sdl_nyan_demo
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## Usage
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Only internal use in the demo application tested so far. Needs more CMake-foo to
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be installable as "proper" library.
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The nyan sprites have been converted to c code and are included in the library,
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so there's no need to keep the `.png` files around.
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Create a `SDL_Renderer` and call `make_nyan_sprite_sheet_from_mem()`. This
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creates a texture containing all 12 rightward-facing nyan sprites.
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Use `nyan_sprite_rect()` to get the `SDL_Rect` for a specific sprite. This can
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be used as the `sourceRect` for `SDL_RenderCopy` or `SDL_RenderCopyEx`.
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See the demo on how to make circly, spinny nyans.
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Meow!
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## External projects used in sdl_nyan
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* Nyan sprites taken from https://github.com/splitbrain/nyan which does not have a license.
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* Uses stb_image from https://github.com/nothings/stb (MIT | public domain).
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* [image_to_c](https://github.com/bitbank2/image_to_c) was used to generate C code from the nyan sprites.
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