Entry 105

Data Drain's movie: the stream by the target, its resident files, and the enemy drawn into it

2026-09-25uivideorendertest

Filescrates/piney-fieldui/src/menus/drain.rscrates/piney-fieldui/src/lib.rscrates/piney-fieldui/src/world.rscrates/piney-fieldui/examples/fieldui_probe.rscrates/piney-battle/src/drain.rscrates/piney-world/src/foe.rscrates/piney-world/src/field_world.rscrates/piney-world/src/combat/mod.rscrates/piney-stream/src/lib.rscrates/piney-stream/src/event.rscrates/piney-stream/src/draw.rscrates/piney-game/src/stream.rscrates/piney-game/src/area.rscrates/piney-game/src/world.rscrates/piney-game/src/session.rstools/test_fieldui_rs.pydocs/engine/field-ui.mddocs/engine/stream.md

102 left the drain movie out: the port went on as with drainDemo off. A new game has it on, and a boss's movie plays whatever the option says. Skeith's drain at the end of the game is stream 18.

What the game does

The details are on the field UI page.

• The stream.
  • An enemy's is chosen by its size (ccCheckObjectSize, its row's +0x70): 109, 110 or 111. It plays only with drainDemo on.
  • Any other target's is chosen by base->id, Skeith's being 18.
  • The menu starts ccThExecuteStream and breathes without its Disp until the stream's param goes to -1.
  • A boss's EntryAffect(21) comes before the movie, not with the rules after it.
• The models are not in the streams. str8100 drew nothing in the port: its # objects are defined in DATA.BIN's str8000e and str8001e. A field's and a dungeon's file lists (strcmnFileList, datadrainFileList) keep those in memory.
• ccThDrainEnemy. It draws the target into the stream's scene, on its layer and through its draw environment: the enemy's clump on animation slot 6, at (0, -900, 130), turned half about z, from stream frame 30 to 229.

The port

• The menu (drain.rs) runs movie(), movie_wait() and rules():
  • Request::Affect (21) for a boss;
  • Request::DrainMovie(num);
  • two frames later, Request::DrainEnemy(handle) for an enemy;
  • then it waits for FieldUi::drain_movie_done.
• CharInfo::object_size is new. The runtime fills it with piney_battle::drain::check_object_size.
• piney_stream::Stream::with_resident loads files the place holds. Stream::step_with (and EventStream's and StreamPlayer's) lets another task draw into the scene. draw::to_screen gives the scene's camera.
• StreamPlayer::drain plays the stream over the two resident files.
• piney_world::foe::DrainEnemy is the enemy task. Model::draw_with takes another environment's lights (the stream's).
• area.rs runs the movie, then drain_movie_done, and hides the minimap with the world. The town answers a movie at once, since no drain happens there.

Checked

• tools/test_fieldui_rs.py test_drain_movie.
  • The stream is faked, ending 40 frames after it starts, and ccCheckObjectSize is answered per character.
  • It covers sizes 4, 3 and 1 with drainDemo on (109, 110, 111), and a boss with it off (its EntryAffect(21), then 111 for id 14).
  • It compares the stream, the enemy task's start, the frames and the rest of the drain with the game's.
  • A boss with id 0 changed the harness's own target window, so the test keeps id 14.
• session::tests::data_drain_movie_in_a_fight. After event 3, with drainDemo on, the goblin's drain plays stream 109 over the field for more than 60 frames, and the enemy task is made. Then come the rules and the drop. data_drain_in_a_fight still plays none with it off.
• drain_movie_shots (ignored). It writes every 40th frame to /mnt/data/claude/scratch/drainmovie: Kite, the bracelet's petals, the beams, the orb, and the goblin small and far below Kite, as placed.
• The rest. All six field UI suites, the workspace's tests, clippy, fmt and the docs check pass.