Block wiki

Every default block

This is the shipped library, taken from the game's own registrations. Costs are in ops, and the baseline processor runs ten of them per tick — so the number in the corner of a block is the fraction of one thought it takes up.

Exec ports

The green ports. Control flows along them, one branch at a time. A block with no exec ports is a source: it never appears in the control flow and runs only when a data wire reads it.

Data ports

Inputs and outputs carrying values. Pulling an input executes whatever is wired to it, which is why reading a sensor costs its ops and leaving one unread costs nothing.

Requires Sensor

Environmental senses are hardware. A program using one is refused before it runs if the level's snake has no Sensor Segment, naming the node and the segment — and the sensor refuses again at run time, so a segment lost mid-run errors on the block instead of quietly answering stale.

Ends the tick

The five action blocks. Reaching one resolves the tick's single action and suspends the thread there; the next tick resumes at the block after it.

Items

Weight is a share of the spawn roll; score is the base value before the combo multiplier. Levels place their items by hand — free play rolls for them.