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Newcomers DBPro Corner / Rotating 2D Objects

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Allen Moore
21
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Joined: 28th Jan 2003
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Posted: 28th Jan 2003 17:28
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I've tried to do some manual searching in these forums with no luck. Ideally there would be a search button to assist in searching though these forums. I've just gotten the trial demo, and was playing around with the sprite rotate function, however I was wondering if there was a way to rotate an object from the middle as oppose to it's upper middle, or upper left hand corner. The default way it rotates is not the desired effect I was looking for. If anyone could help, I'd be greatly appreciative.
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Allen Moore
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Posted: 28th Jan 2003 18:09
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By the way, incase it makes a difference... i'm using Dark Basic Pro Trial Demo. Thank you.

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Richard Davey
Retired Moderator
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Joined: 30th Apr 2002
Location: On the Jupiter Probe
Posted: 28th Jan 2003 18:39
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Use the offset sprite command to shift the hotspot (and thus, point of rotation) from the corner to the middle.

The code is pretty simple:

offset sprite spr, x, y

where spr = your sprite
x = half the width of your sprite
y = half the height of your sprite

You can also offset to other areas of course which make for interesting rotation effects.

Cheers,

Rich

"Gentlemen, we are about to short-circuit the Universe!"
DB Team / Atari ST / DarkForge / Retro Gaming
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Allen Moore
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Joined: 28th Jan 2003
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Posted: 28th Jan 2003 21:59
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Great thank you! I wondered if the offset command wasn't the key, however I wasn't fully sure how to go about utilizing it. Thanks again.

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