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Newcomers DBPro Corner / line of sight and -static collision

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The Cubist
21
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Joined: 26th Mar 2003
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Posted: 20th Apr 2003 12:06
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I ned some help with line of sight in a project I'm working on.
It is a catapult game where opponents hurl water balloons at each other using real physics. I need to know how to check if the water balloon is on target before it gets hurled to set up a collision routine ie explosion etc.I've only been using dark basic pro for 3 weeks.
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Scorpyo
22
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Joined: 26th Aug 2002
Location: italy
Posted: 20th Apr 2003 13:58
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collcheck:
for n=firstopponent to lastopponent
diffposx2#=abs(object position x(balloon)-object position x(n))
diffposz2#=abs(object position z(balloon)-object position z(n))
collsqrt#=sqrt((diffposx2#*diffposx2#)+(diffposz2#*diffposz2#)
if collsqrt#<80 then "enable collision balloon -opponent"
next n
return

Something like this..
this will enable your collision check routine only when the balloon is less than 80 units from the opponent
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The Cubist
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Joined: 26th Mar 2003
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Posted: 22nd Apr 2003 09:00
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Thanks Scorpyo. Shoulda realized the old tried and true a^2+b^2=c^2.
And the <80 is meant as a measurement of nearness right?
Greatly appreciated

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Scorpyo
22
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Joined: 26th Aug 2002
Location: italy
Posted: 23rd Apr 2003 01:55
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you are welcome..
yes , 80 is the nearness , so you can put any value you like..
additionally , if you introduce in that code a balloon height vs opponent height check to trigger action, you could skip DBP collision check which may eat some frame rate..
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