very good equation, but not effecient!

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D I G I T A L

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Joined: 22nd Jun 2003

Location: Dubai, UAE

Posted: 14th Oct 2003 02:15

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hello people,
take a good look at this code:

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`ENEMY POSITION:
mX#=object position x(enemy)
mY#=object position y(enemy)
mZ#=object position z(enemy)

`THE EQUATION:
if sqrt(mX#-x#)^2 + (mY#+30 -x#)^2 + (mZ#-z#)^2 < 20 then enemy kiss the floor!
or 
enemy is still breathing!

yup! its the equation for defining the distance between the bullet and the enemy, "if distance between them is less than 20 then kill the enemy."(x#,y#,z# are position of bullet)
The problem:
the size of the enemy! i have to hit the enemy in a very precise location of his body so he could die, which i find is very difficult for the user to deal with.
so do u have any suggestions? if my problem isnt clear, plz notify.
thankx for advance.

‘Those who ignore the lessons of the past are doomed to repeat them’ (Napoleon)

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John H

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Location: Burlington, VT

Posted: 14th Oct 2003 02:24

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Id throw an ABS in there or you may get some pretty funky results when that number becomes negative.

Just find the location where the bullet hits the enemy. Use intersect object, put the location in an arrary, then compare the array data to previously recorded data where certain spots are eg

X>500 and < 100 = Head

Hope that helps

RPGamer

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We need a texture artist!
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D I G I T A L

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Location: Dubai, UAE

Posted: 14th Oct 2003 02:29

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wow, that's alota code and finger stretching! but i think it could do the trick. if any other suggestions plz dont hazitate!

thankx

‘Those who ignore the lessons of the past are doomed to repeat them’ (Napoleon)

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indi

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Location: Earth, Brisbane, Australia

Posted: 14th Oct 2003 05:27

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[href]www.lunarpixel.com/temp/distance.DBA[/href]

is an example of a distance function in use.

save ferris

http://www.lunarpixel.com/dt/

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=C=

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Posted: 14th Oct 2003 19:50

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There is no way you will ever get negative values of something Squared... So no ABS is needed.

Also, Why don't you get your target object, add a cheap limb, (use a plain or cube), and test on the limb.

And it will make your code so much easier to read. It will be a case of testing like so (pseudocode follows):

Distance between Bullet and limb 1 of monster < 1 then Monster Dead!

all you will test is not the monster x but the monster limb x etc.

Does this make sense? Limb are good and coincidence, All you wanna do really is check on limbs aint it?

Sorry for the pseudocode, dont have my darkedit here with me to write a wee code sample for ya... but in principle is an easy little routine and you have written most of it already.

Cheers

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Anoint my head, Anointy 'nointy

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D I G I T A L

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Posted: 15th Oct 2003 00:59

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that really helped so much!