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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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## Controls
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### Generics
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- `ctrl+n` New
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- `ctrl+r` Reload
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- `ctrl+s` Save(.chr)
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- `ctrl+shift+s` Save(.bmp)
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- `ctrl+h` Toggle Guides
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### General
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- `1234` Colors0-3
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- `asdfg` Modes0-4
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- `c` Copy Mode
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- `b` BigPixel Mode
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- `z` Decr. Brush Size
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- `x` Incr. Brush Size
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### Paint
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- `mouse1` Paint
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- `mouse2` Line
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- `mouse1+mouse3` Erase
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- `ctrl+mouse1` Color Picker
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## TODO
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- Rotate tile
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- Flip tile
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- Roll pixels
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- Roll colors
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