Create: Fluid Freight

Create: Fluid Freight is a Create addon that adds fluid-aware train scheduling. It does not add blocks or items. Instead it registers new schedule instruction and condition types that let a train watch its own fluid cargo and route itself to a refueling depot when it runs low, then resume its route. Thresholds are configured in buckets in the standard Create schedule interface.

Features

• Fluid-Aware Destination stop: a normal destination stop with a per-stop minimum fluid threshold in buckets. On its turn the train sums the total fluid across every carriage tank; if the total is below the threshold, it detours to the refuel depot. Otherwise it behaves like a vanilla destination stop.
• Refuel Depot entry: marks a schedule stop as the refueling depot and carries its own "topped off" threshold in buckets.
• Resume After Refuel condition: a wait condition on the depot entry. It holds the train until total fluid reaches the depot's full threshold, then returns the train to the stop that triggered the detour and continues the schedule from there. The waiting status reports current versus target fill in mB.
• Pass-through behavior: when a train reaches the depot already topped off, the depot can be set to "Wait until full" or "Skip if topped off".
• All state lives on the schedule itself, so the detour and resume survive across stops.

Requirements

• Minecraft on NeoForge. Supported game versions are tagged on each file.
• Create. Registrate, Ponder, and Flywheel come bundled with it; no separate copies are needed.

Create: Fluid Freight ships as part of the ColonyWorks: Empires modpack and, since it depends only on Create, also runs standalone in any Create 1.21.1 NeoForge setup.