Commit Graph

2 Commits

Author SHA1 Message Date
77297fd60d Text Tool and Pan Tool
Two new tools added to the Level Editor:

* Pan Tool: left-click to scroll the level around safely.
* Text Tool: write text onto your level.

Features of the Text Tool:

* Can choose from the game's built-in fonts, size and enter the message
  you want to write.
* The mouse cursor previews the text when hovered over the level.
* Click to "stamp" the text onto your level. The currently selected
  color swatch will be used to color the text in.
* Adds two new fonts: Azulian.ttf and Rive.ttf that can be selected in
  the Text Tool.

Some implementation notes:

* Added package native/engine_sdl.go that handles the lower-level
  SDL2_TTF logic to rasterize the text into a black&white image.
* WASM not supported yet (if the game even still built for WASM);
  native/engine_wasm.go stubs out the TextToImage() call with a "not
  supported" error just in case.

Other changes:

* New Toolbar icons: they are 24x24 instead of 32x32 to make more room
  for more tools.
* The toolbar now shows two buttons per row for a more densely packed
  layout. For very narrow screen widths (< 600px) the default Vertical
  Toolbar layout will use one-button-per-row to not eat too much screen
  real estate.
* In the Horizontal Toolbars layout there are 2 buttons per column.
2022-03-05 15:34:20 -08:00
cc1e441232 Eraser Tool, Brush Sizes
* Implement Brush Sizes for drawtool.Stroke and add a UI to the tools panel
  to control the brush size.
  * Brush sizes: 1, 2, 4, 8, 16, 24, 32, 48, 64
* Add the Eraser Tool to editor mode. It uses a default brush size of 16
  and a max size of 32 due to some performance issues.
* The Undo/Redo system now remembers the original color of pixels when
  you change them, so that Undo will set them back how they were instead
  of deleting the pixel entirely. Due to performance issues, this only
  happens when your Brush Size is 0 (drawing single-pixel shapes).
* UI: Add an IntVariable option to ui.Label to bind showing the value of
  an int reference.

Aforementioned performance issues:

* When we try to remember whole rects of pixels for drawing thick
  shapes, it requires a ton of scanning for each step of the shape. Even
  de-duplicating pixel checks, tons of extra reads are constantly
  checked.
* The Eraser is the only tool that absolutely needs to be able to
  remember wiped pixels AND have large brush sizes. The performance
  sucks and lags a bit if you erase a lot all at once, but it's a
  trade-off for now.
* So pixels aren't remembered when drawing lines in your level with
  thick brushes, so the Undo action will simply delete your pixels and not
  reset them. Only the Eraser can bring back pixels.
2019-07-11 19:07:46 -07:00