Impossible Bullet in Keen 4

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StevenAnzalone
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Impossible Bullet in Keen 4

Post by StevenAnzalone »

I'm a lurker, I just made a quick account to show you a video I made. I've managed to (kind of) reproduce the "Impossible Bullet" bug from Keen 6 in Keen 4.
http://www.youtube.com/watch?v=dUzuZBI3J40

I don't think anyone has ever done this before, so... you're welcome!

Back to lurking... :dopefish
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Post by Grimson »

Wow! How strange. A really good find, though.

PS. Why lurk when you have such a friendly and welcoming community to join? :)
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Post by StevenAnzalone »

Grimson wrote:Wow! How strange. A really good find, though.

PS. Why lurk when you have such a friendly and welcoming community to join? :)
I like being an unknown outcast, it's just my nature. I don't like to dabble in forumtry, even of a friendly nature. :p
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Re: Impossible Bullet in Keen 4

Post by Dynamo »

StevenAnzalone wrote:I'm a lurker, I just made a quick account to show you a video I made. I've managed to (kind of) reproduce the "Impossible Bullet" bug from Keen 6 in Keen 4.
http://www.youtube.com/watch?v=dUzuZBI3J40

I don't think anyone has ever done this before, so... you're welcome!

Back to lurking... :dopefish
This is a great find, excellent work! Do you think it could also work on Keen 5?

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Post by Levellass »

Should do, the bullet error is the same in all 3 engines.
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Post by tulip »

Yep it is the same way that it does work in Keen5 (see Keen Asylum where you have to do it that way in one level)
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Post by DHeadshot »

I did wonder why the trick should work in Keen 6 and not Keen 4-5 - it's not like they remade the thing from scratch...
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Post by Commander Spleen »

mind = blown

I had thought there must be some difference in the sprite clipping or an ever so slight modification to the code that made the IPB impossible in 4-5. Last I heard, which was albeit a few years ago, it was declared Keen 6 only.

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Post by ckguy »

My theory as to why standard IBT only works in Keen 6 is that Keen 6 has you jump on and bump your head on switches. The extra code needed for these new collision/clipping things introduced the bug that allows you to actually stand on your bullet in certain situations. Keep in mind that I have no real basis for this theory, it's just ... a feeling that may be completely wrong.

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Post by RivaStyle »

The IBT in Keen6 comes from a similar property of standing on a Gik or flipping a switch.

In the video, you can see that Steven shoots and hits the floor (with excellent timing, BTW) while standing on a Goplat, making the trick working even with Keen4 in (nearly) the same mode of Keen6...
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Post by KeenRush »

Neat find! The first time I see it. :)
CK Guy wrote:My theory as to why standard IBT only works in Keen 6 is that Keen 6 has you jump on and bump your head on switches. The extra code needed for these new collision/clipping things introduced the bug that allows you to actually stand on your bullet in certain situations. Keep in mind that I have no real basis for this theory, it's just ... a feeling that may be completely wrong.
Might have something, that theory.
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Post by StevenAnzalone »

Commander Spleen wrote:mind = blown
Enjoy...
http://www.youtube.com/watch?v=f-bQFg_HcRw
(I used CamStudio again simply because I was too much of a noob to figure out how to record video through DOSBox.)
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Post by Levellass »

My theory as to why standard IBT only works in Keen 6 is that Keen 6 has you jump on and bump your head on switches. The extra code needed for these new collision/clipping things introduced the bug that allows you to actually stand on your bullet in certain situations. Keep in mind that I have no real basis for this theory, it's just ... a feeling that may be completely wrong.
Keen 6 came first remember? That code may well have been removed for this very reason, not removing the IB at its source, but just the easiest way to do it.
What you really need, not what you think you ought to want.

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Post by DHeadshot »

StevenAnzalone wrote:
Commander Spleen wrote:mind = blown
Enjoy...
http://www.youtube.com/watch?v=f-bQFg_HcRw
(I used CamStudio again simply because I was too much of a noob to figure out how to record video through DOSBox.)
Ctrl+Alt+F5 - I can never remember either and have to look it up...

[EDIT]It saves to the DOSBox Capture folder, which should be linked to in the Start Menu folder that you launch DOSBox itself from...
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Post by Roobar »

Someone willing to make and test this concept?

There can be made several expert puzzles like this one :).

Image


Or this:

Image
Last edited by Roobar on Sat Sep 18, 2010 13:33, edited 1 time in total.

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