Native Win64/D3D11 presentation, CRT integration, retail CD import, exact RNC extraction, direct original-engine boot, XAudio2, verified SFX and lossless CD audio, corrected mouse/fullscreen handling, modern keyboard/Xbox input, save states, and one-project static MSVC integration.
Complete-game play-through testing, game-specific save-state UX, controller tuning, audio-device recovery and automated captures.
Document and test BDP, SPC, WPC, TPC, APC, HPC, MPC, and PPC.
Create palette, sprite, animation, room, text, and world inspectors. Scan the
entire corpus and reject malformed sizes or offsets safely.
Rebuild isometric composition, palette behavior, depth sorting, animation, camera, and room transitions. Match reference scenes before wider cameras.
The retail TDINFO symbols revealed a 464x320 indexed backing surface and the
VidUpdateScreen 320-byte copy window. The native host now reads a centred
426x200 view directly from that surface and live VGA palette. It applies DOS
pixel aspect, translates pointer coordinates, and uses automatic 4:3 fallback
outside validated gameplay modes.
The control bar is an unstretched 320-pixel compositor layer. The remaining milestone is an all-room audit for voids, hidden triggers, spoilers, scene assumptions, and uninitialized tiles, followed by explicit per-room fallbacks.
Native presents are now decoupled from retro_run() at the core-reported frame
interval: faster displays repeat the latest completed image, input is sampled
at presentation rate, and gameplay/audio/CD/save evolution occurs only on core
steps. The next reverse-engineering task is to measure Heimdall 2's internal
authoritative game tick rather than equating it with the 60 Hz VGA/core output.
An opt-in experimental whole-frame interpolator now blends completed scene textures and excludes the HUD. The preferred deeper path still exposes previous/current camera, actor, projectile, enemy, and object positions and renders only interpolated visual positions. Interpolation state never enters authoritative engine state or save states.
Add accessibility, optional HD packs, and documented bug/localization fixes without altering the compatibility baseline. The original engine remains authoritative for gameplay; the Windows host owns camera presentation and visual refresh frequency.