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DarkBASIC Discussion / Rolling Movement

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Black Cat XIII
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Posted: 14th Feb 2006 04:23
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How can I control a spherical object to where when I use the up arrow it moves forward and rotates on its X-axis as if its rolling?

Could you possibly provide code for me?

Enemy Lasagna
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SimSmall
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Posted: 14th Feb 2006 23:32 Edited at: 14th Feb 2006 23:35
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if upkey() = 1
move object [ball],0.5
xrotate object [ball],wrapvalue(object angle x([ball])+0.5)
endif

make sure before you reach this loop (assuming it's in a loop) make sure you:
set object rotation zyx [ball]
otherwise it may not rotate as you want it to...
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Black Cat XIII
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Posted: 15th Feb 2006 18:00
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Um, what exactly do I do for the set object rotation? What do I set it to?

ALso, I did that without the Set Object Rotation, and all it does is a rolling frontflip over and over again.

Help?

Enemy Lasagna
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Tinkergirl
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Posted: 15th Feb 2006 18:09
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Sounds like your pivot point might be at the bottom of your rotating object, instead of the centre.

Did you make the object in a modelling package, and if so - when you exported/saved it - where was 0,0,0?

Was it at the bottom of the object, or in the very middle?

(It needs to be in the very middle).
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SimSmall
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Posted: 15th Feb 2006 21:32
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true about the modelling package bit...

but for the command I think you're a little unsure of:
set object rotation zyx 1

if your ball object is object 1, if it's not 1, then replace the 1 with the actual number of your ball object. Doing object rotation zyx, won't stop it front-flipping, but trust me, it will be handy a little later on...
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Black Cat XIII
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Posted: 15th Feb 2006 23:52
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I found a good rolling code, so I'm ok now.

I'm trying to figure out how to use 2 keys at once. I know its simple, I'm just oblivious right now.

Enemy Lasagna
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SimSmall
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Posted: 16th Feb 2006 13:42
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instead of upkey()=1 you'll need is keystate()=1 (with the key number in the brackets)
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