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Job: target_node claim so pawns don't cluster on the same target

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Visible bug: with 1 wall ghost queued, all 3 pawns picked the same site;
2 stood idle while 1 built. Same shape would affect chop/mine/haul/etc.

Design: Job carries an untyped target_node ref (the tree/rock/build-site/
crop/item/patient/workbench/etc the job is acting on). Job.is_target_taken_
by_other(target, excluding_pawn) does an O(pawns) scan of live job state to
ask 'is anyone else already working this?'. Each WorkProvider's find_best_
for() now skips claimed targets in its scan and sets j.target_node before
returning. No per-entity claim state, no .claim()/.release() bookkeeping,
no save-format change — target_node is intentionally not serialized
because pawns re-decide and re-bind naturally after load.

Providers updated: construction / chop / mine / plant (harvest path) /
hauling (item AND corpse) / cleaning (target is Vector2i tile not Node;
field is untyped, doc'd) / doctor / crafting (workbench).

Not touched: rest (everyone shares the rest tile, that's fine), eat /
sleep (food and beds have their own availability gates; flagged as a
followup if multi-pawn food contention surfaces).

Verified MCP runtime: fresh boot, 3 pawns picked 3 distinct wall sites
(44,28)/(45,28)/(44,27) with distinct target_node refs.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
megaproxy 2026-05-12 13:45:44 +01:00
parent 07fb66608a
commit e7a2407af2
9 changed files with 70 additions and 1 deletions
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4
scenes/ai/crafting_provider.gd
View file

@ -55,6 +55,9 @@ func find_best_for(pawn) -> Job:
# Duck-type guard: skip workbenches that aren't fully set up yet.
if not wb.get("_completed"):
continue
# Skip workbenches another pawn has already claimed for crafting.
if Job.is_target_taken_by_other(wb, pawn):
continue
for i in wb.bills.size():
var b = wb.bills[i]
@ -91,6 +94,7 @@ func find_best_for(pawn) -> Job:
var j := Job.new()
j.label = "Craft %s at %s" % [best_bill.recipe.label, best_wb.get("label_text") if best_wb.get("label_text") != null else "workbench"]
j.target_node = best_wb
j.toils.append(Toil.walk_to(src_item.tile))
j.toils.append(Toil.pickup())
j.toils.append(Toil.walk_to(best_wb.tile))