HACK 2021 “Cool Sprites” Extension for Arcade

I should have named this quad sprites. This extension defines a new kind of Sprite that renders itself using a native method called drawQuad. drawQuad is a generalized rendering method that can rasterize a sprite at any rotation, scale, and quadrilateral shape (trapazoid, parallelogram, rhombus, etc). It doesn’t care.

This extension also defines a Transform class for use with the new Sprite type, allowing the sprite to be freely scaled, translated, and rotated.

Transforms can be parented, allowing one sprite to be the parent of another. The child sprite will inherit movement, rotation, and scale from the parent, and add its own. You can think of it as being like the relationship between your arms and your body; whenever your body moves, your arms also move. They inherit the movement characteristics from the thing they’re attached to.

drawQuad implementation is here: https://github.com/microsoft/pxt-common-packages/commit/152a418ededefc191d0e608521732ea5169cdcfa

NOTE: This extension must be used with a version of Arcade that includes the drawQuad function, like this one: https://arcade.makecode.com/app/7ae712dd21ba79dc363df2b2a802237a110571a2-2f277d2e1b

See the demos folder for some demos you can import into the above target, and see cool sprites in action!