Block and wheel entity positioning (start, pivot, mimic, mouse)
backgroundColor
clearAlpha
To note: Javascript is not running in this browser environment. The canvas element is ignored; instead a placeholder image displays where the canvas would have appeared.
Test purpose
Create and clone block and wheel entitys
Position the entitys on the canvas using start (default) attributes, alongside pivot and mimic attributes
Check that when an entity mimics or pivots on an entity that itself mimics or pivots another entity, everything positions as expected
Kill and resurrect several entitys to make sure they remove themselves entirely from the Scrawl-canvas system, and cleanly recreate themselves from saved packets
Also:
Check that the Cell responds correctly to changes in its backgroundColor value
Check that the Cell responds correctly to changes in its clearAlpha value, and that the clearAlpha effect only displays when the backgroundColor value is set to an empty string (the "none" option)