doodle/balance/README.md

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# balance
Constants and settings for the Doodle app.
## Environment Variables
Some runtime settings can be configured in the environment. Here they are
with their default values.
Most colors work with alpha channels; just provide an 8 hex character code,
like `#FF00FF99` for 153 ($99) on the alpha channel.
* Application Windw Size (ints):
* `DOODLE_W=1024`
* `DOODLE_H=768`
* Shell settings:
* `D_SHELL_BG=#001428C8`: shell background color.
* `D_SHELL_FG=#0099FF`: shell text color.
* `D_SHELL_PC=#FFFFFF`: shell prompt color.
* `D_SHELL_LN=8`: shell history line count (how tall the shell is in lines)
* `D_SHELL_FS=16`: font size for both the shell and on-screen flashed
messages.
* Debug Colors and Hitboxes (default invisible=off):
* `DEBUG_CHUNK_COLOR=#FFFFFF`: background color when caching a
chunk to bitmap. Helps visualize where the chunks and caching
are happening.
* `DEBUG_CANVAS_BORDER`: draw a border color around every uix.Canvas
widget. This effectively draws the bounds of every Doodad drawn on top
of a level or inside a button and the bounds of the level space itself.
* Tuning constants (may not be available in production builds):
* `D_SCROLL_SPEED=8`: Canvas scroll speed when using the keyboard arrows
in the Editor Mode, in pixels per tick.
* `D_DOODAD_SIZE=100`: Default size when creating a new Doodad.