Sonic the Hedgehog 2+

Discussion in 'Engineering & Reverse Engineering' started by Advanced?, Jul 20, 2020.

  1. Advanced?

    Advanced?

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    Sonic 1 Hack
    Second time writing this thanks to the forums going down temporarily.

    Sonic the Hedgehog 2+ (Sonic 2+ from now on) is an attempt by me to fix a lot of bugs with the original game and restore scrapped levels such as Ocean Wind and Tropical Plant. I started working on it on July 2.

    Currently I'm working on Ocean Wind, Hidden Palace is completely finished while other stages only have their title cards implemented (Blue Lake Zone is just its music). For those who want to play Ocean Wind, use the level select in Version 1.7.1+ (link below).

    Stages (by internal ID):
    $00 - Emerald Hill Zone
    $01 - Ocean Wind Zone
    $02 - Wood Zone
    $03 - Sand Shower Zone
    $04 - Metropolis Zone
    $05 - Metropolis Zone Act 3 (debating on whether I should change it to Genocide/Cyber City)
    $06 - Wing Fortress Zone
    $07 - Hill Top Zone
    $08 - Hidden Palace Zone
    $09 - Rock World Zone
    $0A - Oil Ocean Zone
    $0B - Mystic Cave Zone
    $0C - Casino Night Zone
    $0D - Chemical Plant Zone
    $0E - Death Egg Zone
    $0F - Aquatic Ruin Zone
    $10 - Sky Chase Zone
    $11 - Tropical Plant Zone
    $12 - Blue Lake Zone (CRASHES ON TITLE CARD)

    Screenshots:
    New Ocean Wind.png
    Ocean Wind (WARNING: NOT FINAL)

    Sonic 2.png
    The Tornado in Emerald Hill Zone, as a decoration

    Latest Version: Version 1.77 (release July 21, 2020)

    Previous Versions:

    Version 1.7.3 (released July 19, 2020)

    Credits:
    MainMemory - Knuckles' Emerald Hunt disassembly (contained constanted Redz and Batbot code)
    Esrael - Sonic 2 August 21/September 14 disassembly (object graphics/Rhinobot code)
    E-122 Psi - Telling me about the end of level HPZ bug (where you could get stuck)
    Redhotsonic - Various Sonic 2 bug fixes and new Super Sonic transformation
    Clownacy - Various Sonic 2 bug fixes, making Sonic 2's sound driver better
    Gamma V - Sonic Blast GHZ music (only used in v1.1)
    MoDule - Various Sonic 2 bug fixes
    ValleyBell - SMPS Research Pack
    MarkeyJester - Water crash bug fix
     

    Attached Files:

    Last edited: Jul 21, 2020
  2. Advanced?

    Advanced?

    Member
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    Sonic 1 Hack
    Version 1.77:
    Summary of changes:
    • BUG FIXES, SO MANY BUG FIXES
    • Improved DAC quality
    • Improved real time PCM quality
    • Sound inputs are direct a la S3K:eng101:

    By this way this wasn't a planned release, this was only because of the disassembly release.
     
    Last edited by a moderator: Jul 21, 2020
  3. Greenknight9000

    Greenknight9000

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    I think Metropolis Act 3 should be renamed to Cyber City Zone. Genocide City was just a mistranslation of sorts between developers and, upon learning of the meaning of the word, changed it to Cyber City.
     
  4. RetroactionGlitchBiology

    RetroactionGlitchBiology

    SONIC GOT THROUGH ACT 2 Member
    Too bad I can't download this, sounds pretty cool.
     
  5. Advanced?

    Advanced?

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    Sonic 1 Hack
    [​IMG]
    You'll now get this upon starting the game.