- Leaves no longer decay into air.
- Leaves compost over longer time, following tree growth logic
(i.e. based on moisture and soil) when not exposed to air.
- Leaves left in the sun decay to nothing.
- Leaves deprived of air decay into dirt.
TODO:
- Decay out of stack nodes, half-life qty?
- Dig particle effects for node destruction; create API and
apply to other places?