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DarkBASIC Discussion / is there a range command?

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MoonSon
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Posted: 6th May 2003 15:15
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I was wondering if there was a simple command in DB that deals with the distance from an object in 3D space. For example -

If object 1 is within object 2 range(distance) then do something....

Or is my code attached the only way of doing this?
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GameKit
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Joined: 6th Mar 2003
Location: USA, Staring Blankly at a Computer
Posted: 6th May 2003 17:49
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or... you could make a function like this...

function distance(obj1,obj2)
dist#=sqrt((object position x(obj1)-(object position x(obj2))^2+(object position y(obj1)-(object position y(obj2))^2+(object position z(obj1)-(object position z(obj2))^2)
endfuntion dist#

this will give you the distance between any two object... so you can say...

if distance(1,2)<5 then collision=1 else collision=0

...hope this helps...

Anyone Can Destroy...But Few Can Create...
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MoonSon
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Posted: 6th May 2003 17:56
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thanks i'll give it a go

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Hell IVIonkey
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Posted: 6th May 2003 21:33
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However, doing a square root command every cycle can slow your program down, especially if you need to check the distance for several objects. Try the distance-squared method.

dist# = (x2-x1)^2+(y2-y1)^2+(z2-z1)^2

and

if dist# < (5)^2
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