Determines what kind of output an element produces (or input is read) based
on the formula. The threshold is the minimum computed output for effects
to take place. Effects refer to effects in the game world such as emitting
light.
The basic element of the wiring system. Inputs are dynamically added based
on the outputs of other elements. Actions specify what to output or what
inputs to read as well as what effects the values should have on the world
state (eg. emit a projectile).