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DarkBASIC Professional Discussion / 3d Co-ord problem

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Siege1975
21
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Joined: 27th Jul 2004
Location: UK - Wiltshire
Posted: 18th Jan 2011 15:33
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I need to check an xyz co-ord is within a certain xyz box.

In other words i want to check player xyz is at another xyz with a tolerance of say +/- 100 units. thus making a sort of detection box.

The trouble is I can't seem to get my head around this one at all. Obviously I can check the exact co-ords but I would like a bit of an error margin built in.

Can someone please help me out with this one, I really can't seem to see the wood for the trees.


http://www.deimos-design.co.uk
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baxslash
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Joined: 26th Dec 2006
Location: Duffield
Posted: 18th Jan 2011 15:46 Edited at: 18th Jan 2011 15:49
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Here you go:


EDIT: oops forgot the z part...

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Siege1975
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Posted: 18th Jan 2011 19:54
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Excellent thank you!


http://www.deimos-design.co.uk
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baxslash
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Posted: 18th Jan 2011 21:47
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No problem.

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Moaz
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Posted: 19th Jan 2011 01:35
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ok I've a question..
why don't you use a hidden box and check if there's a collision between it and the player or whatever ??
What are the disadvantages?
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baxslash
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Posted: 19th Jan 2011 09:53
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Quote: "ok I've a question..
why don't you use a hidden box and check if there's a collision between it and the player or whatever ??
What are the disadvantages? "

The only disadvantage (other than maybe speed if your player object is complex) is that if your player moves quickly enough then he might completely fit within the box and then the collision check would return zero because I believe it checks for clashes between polys not between volumes.

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