tdkpin/tdkpin-rs/CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[Unreleased]

Fixed

• Add a bit-exact Borland Real48 core and route speed clamps, type-1 circles, type-2 segments, moving flippers, capture pulls, trigger randomization, and magnetic impulses through its original rounding behavior.
• Preserve per-ball Real48 spin and use it in collision tangent response, so zero-spin C fixtures and retained-spin Wine traces are both represented.
• Implement dynamic records 174/175 with bidirectional ball impulse transfer and the original post-collision speed clamp instead of a one-sided secondary bounce.
• Split collision contact state into per-player 16-bit type-3 contact words and transient type-4 entry flags. Type-3 records now use the original deep-inside gate, v*0.9 +/-150 pull, stationary sound/contact publication, 5-step age progression to 300, and 99/2 completion sentinels.
• Replace the live-fitted flipper transfer polynomials with the reconstructed 1000:7ed9 millipixel geometry gates, penetration, gain, response-record, velocity, and position calculations for both directions and both balls.
• Preserve every gameplay millipixel across the float-only render projection so exact integer physics results are not changed when stored for drawing.
• Restore launcher input to the setup scalar: each Down keydown subtracts 750 millipixels, release subtracts 1,500, then applies the recovered -3800 and -2280 clamp/jitter branches and the ten original decoration thresholds.
• Apply the original independent 1.03 - Random * 0.08 X/Y velocity response after entering radius-bearing type-4 targets, preserving both motion and the subsequent shared PRNG sequence.
• Check every player against the high-score table when their own last ball is lost, prefill the original TDK Pinball Player name, show the table before resuming the next player, and use the original signed-high/unsigned-low score ordering instead of selecting only the maximum score at whole-game end.
• Preserve each player's complete rule-record state across turn changes instead of globally clearing wheel holes, top targets, 176 active/contact slots, selected effect, and multiball readiness on every drain.
• Store lock-hole and effect awards in the original per-player secondary score instead of a global bonus. The fifth hole now transfers 310000 * score_multiplier, clears it, increments the multiplier and ball count, while effect 6 transfers the same display value and drain leaves it intact.
• Replace the cooldown/float-meter nudge approximation with the original Left-Shift, keypad-3, and Space formulas using scalar 15, the shared Borland random stream, 32-bit velocity wrapping, and the decaying 16-bit +25 tilt counter with its randomized 30..39 threshold.
• Replace the Xorshift gameplay RNG with the original Borland linear stream and unbiased Random(n) high-word mapping. Launcher variation, effect selection, claw terminals, and magnetic-field impulses now share the recovered sequence.
• Restore the magnetic-field response as vx * 0.9 and a randomized -3800 * (1 - Random * 0.3) vertical impulse instead of a fixed upward speed.
• Dispatch the original per-call-site sound sequences instead of assigning one guessed WAV to each logical event. This removes the nonexistent WAV 2022 playback and restores bank, trigger, capture, nudge, tilt, and drain cues.
• Advance media/extra-ball thresholds only from score additions, preserve 32-bit score wrapping, and restore the ninth-diamond 24,464-point award plus the later double-score and secondary-score bank states.
• Match the original 640x460 window, native 16x28 score glyphs, and TDK Pinball Machine 1.00 title so the recovered artwork is presented one-for-one instead of enlarged or resampled.