Simple platformer demo written in Heaps/Haxe. Not commented (for now), not optimized (nor does it claim to be), and may contain not-very-good coding practices.
Has out-of-the-box support for AABB collision check & resolution and basic player controller with smooth accel/deccel and customizable number of jumps.
PR/issue welcome; may or may not be revisited in the future.
Tested with Haxe 4.0.0-rc.5, Heaps git, and hashlink/hlsdl 1.10.0 on macOS Mojave 10.14.6.