293040b61f
sylpheed-port turned my point -- that a static record still declares a cycle, so a nonzero +0x08 against a largest time of 0 is a real disagreement -- into a check on the screens they ship. Re-derived from my reader and it reproduces exactly: 65 nested records in GP_TITLE, 20 declaring a cycle with every pose at t == 0, and 0 of those with any element carrying more than one pose. A record whose elements each hold a single pose renders identically looped or held, so holding them still is correct and now measured. It includes ptbtn11/12/13, EXTRAS' buttons in both language entries, each declaring 120 units with one pose per element. Had any carried two poses, a menu button the disc says animates would have been held still on the one submenu the port's P5 gate walks. Reach: GP_TITLE only; 1530 static records exist disc-wide against the 20 here. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Wuu56cE8vJGTBtn1ppsk8v
53 lines
2.5 KiB
Rust
53 lines
2.5 KiB
Rust
//! Do `GP_TITLE` records that declare a cycle while sitting at t = 0 actually move?
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//!
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//! A static record still declares a cycle length, so a nonzero `+0x08` against a
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//! largest keyframe time of 0 is a real disagreement. `sylpheed-port` turned that
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//! into a check on the screens they ship: 20 such records in GP_TITLE, and none
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//! with any element carrying more than one pose — so the declared cycle is
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//! visually inert and holding them still is correct.
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//!
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//! This re-derives it. If any record had a multi-pose element, the port would be
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//! holding something the disc says animates.
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//!
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//! cargo run -p sylpheed-formats --example static_cycle_inert
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use sylpheed_formats::{pak::PakArchive, ui_layout};
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use std::path::PathBuf;
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fn main() {
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let root = PathBuf::from(std::env::var("SYLPHEED_DISC").expect("SYLPHEED_DISC"));
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let ar = PakArchive::open(root.join("dat/GP_TITLE.pak")).expect("GP_TITLE");
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let (mut total, mut static_cycle, mut multipose) = (0usize, 0usize, 0usize);
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for e in ar.entries() {
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let Ok(by) = ar.read(e) else { continue };
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let Some(b) = ui_layout::parse_build(&by) else { continue };
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for (name, (off, size)) in &b.records {
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let rec = &by[*off..(*off + *size).min(by.len())];
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if rec.len() < 0x10 || &rec[0..4] != b"RATC" {
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continue;
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}
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let Some(leaf) = ui_layout::parse_build(rec) else { continue };
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total += 1;
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let times: Vec<u32> = leaf
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.elements
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.iter()
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.flat_map(|el| el.keyframes.iter().filter_map(|k| k.time))
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.collect();
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let cycle = ui_layout::loop_length_units(rec).unwrap_or(0);
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if times.is_empty() || times.iter().max() != Some(&0) || cycle == 0 {
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continue;
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}
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static_cycle += 1;
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let worst = leaf.elements.iter().map(|el| el.keyframes.len()).max().unwrap_or(0);
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if worst > 1 {
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multipose += 1;
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println!(" 🔴 {name} declares {cycle} units and has an element with {worst} poses");
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} else if name.starts_with("ptbtn1") {
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println!(" {name:16} declares {cycle} units, max poses/element {worst}");
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}
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}
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}
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println!("\nnested records in GP_TITLE : {total}");
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println!("declaring a cycle with every pose at t == 0 : {static_cycle}");
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println!("...of those, any element with MORE THAN ONE pose : {multipose}");
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}
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