Entry 70

Talking and shopping in Mac Anu: the PC, shop and Recorder menus, wired into the runtime

2026-09-23uiworldtest

Filescrates/piney-fieldui/src/talk.rscrates/piney-fieldui/src/menus/talk.rscrates/piney-fieldui/src/menus/merchant.rscrates/piney-fieldui/src/menus/shop.rscrates/piney-fieldui/src/menus/record.rscrates/piney-fieldui/src/menus/trade.rscrates/piney-fieldui/src/menus/breeder.rscrates/piney-game/src/world.rscrates/piney-game/src/session.rscrates/piney-world/src/lib.rscrates/piney-world/src/talk.rstools/test_fieldui_shop_rs.pydocs/engine/field-game.md

The user could not talk to NPCs or use the shops. 66 made X on a character ask for its menu, but the menus closed at once, unported. An agent has now ported them.

The menus

Each is checked frame by frame against the game's own ccThMenu in eemu:

• Walking PCs. 22 PcMenu and 47 TalkMenu: the PCs' lines, the trading PCs' offers, the merchants' chained lines and their voices.
• The shops. The lists of 24, 25 and 26 (Vender, Recorder, Fairyshop), with:
  • 52 Buy and 51 Sell, each with its Disp;
  • Elf's Haven's 54 Store and 55 Withdraw;
  • the Recorder's 53 Record, which saves through piney_desktop's ccSaveSys and card code. The card files it writes are compared too.

Lines, stock, prices and texts are all read from the executable.

Still to come from the agent:

• Trade (48/49);
• 21 (a party member);
• 23 (an administrator);
• 27 and 56 (the Grunty breeder);
• 50 (a gift).

Until then, each closes at once.

How the runtime drives them

• Who is spoken to. When ccThGameCtrl asks for a talk or shop menu, the runtime first tells the field UI who was spoken to (FieldUi::talk_to, the NPC's handle and npcTbl row). The pages read the character's base parameters from there, as the game's read cmndTarget.
• EntryAffect from the menus. 14 as a list opens, 15 as TalkMenu speaks, 0 as it closes. These arrive as Request::Affect and go to the NPC's influence. 65 had the world send 14 and 0 itself, for lack of menus; that stand-in is removed, so the menus are the only source, as in the game.
• The target. The shop pages drop cmndTarget and give it back (ccChangeCmndTarget), and set cmndTargetFix. These go to the new World::change_command_target and World::set_target_fix.
• The Recorder's card. The field UI saves to the session's card directory, starting at the (port, file) where the title's Load left ccSaveSys. --mode world uses the default card.

Checked

• Against the game. tools/test_fieldui_shop_rs.py, 31 tests including random pad runs through the pages, and tools/test_fieldui_rs.py's 33 still pass.
• In the runtime. In --mode world --no-events, walking up the bridge to Bell and pressing X opens her list (Talk, Trade) with her greeting, with the target frame on her.
• In a clean worktree. The workspace's tests, clippy (including piney-fieldui with trace), fmt and the docs check pass. So do the shop, field UI, world, characters' commands and data screen suites.