Marketplace

Both nations' marketplaces are open courts on a stepped plinth, entered from the local −X side through a gateway, with a row of three shops along the back (+X) wall. The plinth stays 2.80 local units wide so the drawn body matches the collider (BuildingBodyFootprint tests).

	Rome (`macellum`)	Carthage (souk)
Shops	limestone tabernae under a lean-to tiled roof; amphora racks, a produce counter with a bronze balance, cloth bolts	sandstone shops with a flat roof and parapet, cloth valances over the doorways, spices, Punic amphorae, murex-purple cloth
Court	central marble fountain, two awning stalls with produce baskets	central cistern with a rope-and-bucket frame, two spice stalls, a dye corner with purple vats and a drying line
Gate	two columns and a lintel with a small aquila, team pennant	two pylons and a timber beam with a small Tanit sign, team pennants

Stall tables stand at waist height for the 0.48-scale townspeople (top at 0.35 local), and shop counters just above it, so the goods sit in plain view instead of under a slab. Materials are set per part through BuildingPartMaterial (stone, wood, cloth, metal), so wood and cloth get their own surface detail in material_detail.glsl instead of the stone default.

Moving parts

submit_market_awnings draws, every frame, the parts that move:

Awnings are six segments deep and one strip per stripe wide; each segment follows a billow plus a travelling ripple whose strength rises and falls with a slow gust, and each stripe ends in a flapping valance. Vertical awnings (back and front points stacked) are hanging cloths: shop valances and the drying cloths.
Hanging goods (garlic, sausages, herbs, spice bags) swing and twist on their strings.

Damaged markets lose every third stripe; destroyed ones draw none. Everything is skipped beyond 95 m. MarketAwningTest.* checks the cloth is cloth, moves and is culled.

People

Buyers walk in through the gate to a stall or the shop counters and haggle; stall sellers stand behind their tables under the awnings, a shopkeeper behind the middle counter, a stroller circles the fountain or cistern, a porter carries goods to the cloth shop, and one townsperson squats by the fountain (Rome) or the dye vats (Carthage). Routes keep clear of every table, post and vat.

walk_route (ambient_people.cpp) eases each leg's start and stop on a trapezoid speed profile, phases the walk from the eased distance (so feet stay planted while slowing), spreads each turn over the first 0.30 m of a leg or the first 0.55 s of a stop, and fades walk and idle into each other over 0.30 s. Porters walk with the real walk clip and carry their load through the upper-body resource_carry overlay (CivilianActor::overlay_clip); playing the hold clip as a walk slid them along with still legs.

Review with build/bin/building_preview --only marketplace --states for the model and arena_app --scenario capital_market_crowd for the people.