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# Nasu
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A minimal chr editor, written in ANSI C.
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## Build
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To build nasu, you must have [SDL2](https://wiki.libsdl.org/).
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```
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cc nasu.c -std=c89 -Os -DNDEBUG -g0 -s -Wall -L/usr/local/lib -lSDL2 -o nasu
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```
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## I/O
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To resume working on a tileset:
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```
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./nasu example.chr
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```
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Import a bmp:
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```
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./nasu example.bmp
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```
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## Controls
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### IO
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- `E` Export(nasu-export.chr)
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- `R` Render(nasu-render.bmp)
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### General
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- `1-7` Patterns
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- `ASDF` Colors0-3
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- `H` Toggle Guides
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- `Z` Decr. Brush Size
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- `X` Incr. Brush Size
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- `C` Cleanup Brush
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- `N` Clear
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### Paint
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- `mouse1` Paint
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- `mouse1+mouse2` Erase
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