fac-connect

name	fac-connect
description	Build a validated run of transport-belt, pipe, or electric poles between two Factorio positions — the construction macro. Pathfinds around obstacles and places every segment. Use dry_run first to check feasibility and cost.
args	{"from_x":"required number — start position x","from_y":"required number — start y","to_x":"required number — end position x","to_y":"required number — end y","prototype":"optional string (default \"transport-belt\") — what to build the run from, e.g. \"transport-belt\", \"pipe\", \"small-electric-pole\"","dry_run":"optional bool (default false) — validate and count segments without building"}

fac-connect

The transactional construction macro (cribbed from FLE's connect_entities): one call builds the whole run or fails as a unit.

Behavior

• dry_run: true reports feasibility and how many segments the run needs — your "check my plan" affordance. Use it before committing.
• The real run consumes segments from your inventory (fac-inventory).
• Positions are ground positions. Belts do not connect INTO machines — furnaces and chests need an inserter between belt and machine (fac-place a burner-inserter).
• Failure carries the standard deviation report (world_changed / stale_model / infeasible).

{"thought": "check the belt run cost first", "tool": "fac-connect", "args": {"from_x": 48, "from_y": 66, "to_x": 60, "to_y": 66, "dry_run": true}}