RustRaptor/docs/intro-validation.md

Original opening cinematics

The normal startup sequence retains the original Apogee and Cygnus logo cards, their individual palettes, the Apogee fanfare and the original city chase, ship, cockpit, firing and explosion animations. Watch intro replays that sequence. The new menu background is used after the cinematics; it does not replace any of their artwork.

The cinematic player uses a separate 70 Hz clock. Original movie rates are converted using the native GFX_WaitUpdate rule, integer 70 / frame_rate ticks per frame. This matters especially for the ship scenes: their native 18 fps setting holds each frame for three service ticks. It previously held them for eighteen ticks in the Rust implementation. Frame sound effects now occur after each frame's timed display, as in MOVIE_Play.

Sequence	Service ticks	Seconds
Apogee and Cygnus cards, with local original fanfare	966	13.80
Complete original introduction	925	13.21
Complete startup sequence	1,891	27.01
Landing	288	4.11
Air and ground death	1,384	19.77
Campaign 1 ending, base approach and landing	1,426	20.37
Campaign 2 ending, base approach and landing	1,171	16.73
Campaign 3 ending, base approach and landing	1,058	15.11

The Apogee hold is derived from the decoded MUS end event, with the original 120-tick minimum. The local original score ends at music tick 516, requiring 517 music service ticks after it starts. Cygnus plays its two boss sound cues at hold ticks 3 and 120, and starts the looping introduction music at tick 135. The logo fades are 64 ticks in and 63 ticks out. The final landing record is decoded and checked, but its delta is not displayed: that native record fades the preceding frame rather than drawing another frame.

Jet background patches resolve through the original sound bank's digital variants. The zero-byte catalog FX markers are not decoded as audio. Their repeat intervals use the same quantized pitch table and DSP stepping as the real mixer. The duration helper is checked against actual voice expiry across 72 combinations of sample rate, pitch and service clock. Clip transitions stop the outgoing background patch before starting the next one, so a long jet sample cannot spill into the cockpit or firing scene. Chronological play/stop events preserve that order even when an update crosses several scene boundaries. Tagged mixer stops remove the patch's held output immediately while preserving other sounds and their playback positions.

Run the portable decoder, timing and cue checks from the repository root:

LD_LIBRARY_PATH="$HOME/.local/lib" cargo test --locked \
  --lib cinematics::tests

Run the original catalog integration checks locally:

LD_LIBRARY_PATH="$HOME/.local/lib" RAPTOR_TEST_DATA="$PWD/data" \
  cargo test --locked \
  --lib cinematics::tests -- --ignored

The checks cover both card palettes, complete logo and introduction durations, music and sound cue times, all original cinematic delta decoding, all sequence rates and rendering-rate independence. Original cinematic assets are included in tracked data/; local screenshot captures remain outside the repository. The retained native source supplies the frame rates and cue placement; these checks are not a frame-by-frame native video or whole-sequence PCM comparison.