SketchyMaze/doodle
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doodle/balance/README.md
Noah Petherbridge bca848d534 Wallpapers and Bounded Levels 
Implement the Wallpaper system into the levels and the concept of
Bounded and Unbounded levels.

The first wallpaper image is notepad.png which looks like standard ruled
notebook paper. On bounded levels, the top/left edges of the page look
as you would expect and the blue lines tile indefinitely in the positive
directions. On unbounded levels, you only get the repeating blue lines
but not the edge pieces.

A wallpaper is just a rectangular image file. The image is divided into
four equal quadrants to be the Corner, Top, Left and Repeat textures for
the wallpaper. The Repeat texture is ALWAYS used and fills all the empty
space behind the drawing. (Doodads draw with blank canvases as before
because only levels have wallpapers!)

Levels have four options of a "Page Type":
- Unbounded       (default, infinite space)
- NoNegativeSpace (has a top left edge but can grow infinitely)
- Bounded         (has a top left edge and bounded size)
- Bordered        (bounded with bordered texture; NOT IMPLEMENTED!)

The scrollable viewport of a Canvas will respect the wallpaper and page
type settings of a Level loaded into it. That is, if the level has a top
left edge (not Unbounded) you can NOT scroll to see negative coordinates
below (0,0) -- and if the level has a max dimension set, you can't
scroll to see pixels outside those dimensions.

The Canvas property NoLimitScroll=true will override the scroll locking
and let you see outside the bounds, for debugging.

- Default map settings for New Level are now:
  - Page Type: NoNegativeSpace
  - Wallpaper: notepad.png (default)
  - MaxWidth: 2550  (8.5" * 300 ppi)
  - MaxHeight: 3300 ( 11" * 300 ppi)
2018-10-27 22:35:06 -07:00

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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):
    • DOODLE_DEBUG_ALL=false: turn on all debug colors and hitboxes to their default colors and settings.
    • 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.
    • DEBUG_CANVAS_LABEL=false: draw a label in the corner of every Canvas with details about the Canvas.
  • 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.

Development booleans for unit tests (set to any non-empty value):

  • T_WALLPAPER_PNG for pkg/wallpaper to output PNG images.