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Sonic 1: Bouncy Edition

Discussion in 'Engineering & Reverse Engineering' started by Xenowhirl, Aug 6, 2007.

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  1. Aug 6, 2007 #1
    Xenowhirl

    Xenowhirl

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    [Just in case you didn't see this posted at Sonic Retro while s2beta was down...]

    So I was playing Within a Deep Forest, and... well, I'm at a complete loss to explain myself, but I decided to make a Sonic hack with similar physics.

    This is the download link.

    Main Features:
    - Sonic is a bouncy ball.
    - The screen snaps into place instead of scrolling.

    Other Noteworthy Features:
    - New special stage controls
    - Modified GHZ3 boss
    - GHZ bridges can be used as trampolines.
    - Custom intro and ending demos

    Controls:
    - Hold A or C to bounce more (when you hit something)
    - Hold B to bounce less (impact reduction)
    - Hold Down to keep moving and roll when you hit the ground
    - Hold Down while stationary and press A/B/C to spindash (good for loops)
    - Hold Up to stop and stand (good for moving platforms and seesaws)

    Have fun!

    Thanks to Chimpo for testing and suggestions.


    If you still don't understand what this hack is about, click on the first link in this post and play that game. If you think it's too hard to get through loops or stay on platforms, read this post.
     
  2. Aug 7, 2007 #2
    Athelstone

    Athelstone

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    Wow, this is probably the most original hack I've played - nice work!
     
  3. Aug 7, 2007 #3
    Ritz

    Ritz

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    This is brilliant, especially the special stages. The screen snapping makes some areas nigh-impossible to pass, though.
     
  4. Aug 7, 2007 #4
    Shadow MK2

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    This hack definitely makes the game more challenging. Can anyone beat Marble Zone?
     
  5. Aug 7, 2007 #5
    Chimpo

    Chimpo

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    Yes

    Use up for the moving platform parts.
     
  6. Aug 8, 2007 #6
    Ritz

    Ritz

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    I made it past SBZ1. I could probably finish the whole game like this, just haven't got around to it.
     
  7. Aug 8, 2007 #7
    RattleMan

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    I think the actual "bounce" sprite is one of the "missing sprites", I.e. sprites in the ROM that aren't used in the actual Sonic 1. Is this correct?
     
  8. Aug 8, 2007 #8
    Nibble

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    I like it!

    Perhaps the hack can be taken a step further with custom levels designed specifically for bounce physics?
     
  9. Aug 8, 2007 #9
    Upthorn

    Upthorn

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  10. Aug 8, 2007 #10
    Xenowhirl

    Xenowhirl

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    Yes. I used two of those missing sprites for the horizontal and vertical "squashed" animations. If you watch carefully in LZ, they are both used for going in and out of the water as well.

    It's not such a bad idea, but I didn't see the need to go that far for something as pointless (within Sonic 1 gameplay) as that, and I'm looking at Sonic 2 more seriously now...
     
  11. Aug 8, 2007 #11
    ICEknight

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    Wow, this reminds me so much of Cauldron II for the ZX Spectrum. I wish the screen also didn't scroll vertically, but it's great either way, good work!
     
  12. Aug 8, 2007 #12
    SMTP

    SMTP

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    I just started to play Within a Deep Forest, I must say its pretty damn awesome.
     
  13. Aug 8, 2007 #13
    Shadow Hog

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    Well, I preferred Knytt, but that doesn't translate as well to Sonic now does it? Although, Knuckles kind of already does the whole wall-climbing thing...

    Pretty good, but I noticed a glitch with the background of Marble Zone 1; I got up to the first checkpoint, died, and the next thing I know, as I make progress, every screen I progress to introduced another blue bar of sorts to the background. It looked weird. I regret that I didn't save any images of the glitch, though...
     
  14. Aug 9, 2007 #14
    Xenowhirl

    Xenowhirl

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    Chimpo got that glitch too. I wish I knew how to make it happen. The MZ background scrolling code in Sonic 1 has problems with fast scrolling, but I already made it scroll twice as slow as every other zone...
     
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