Collision woes

Blitz3D Forums/Blitz3D Programming/Collision woes

Rob Farley

(Posted 2003) [#1]

Okay, I've just started to use blitz collisions and I know I'm not using them correctly!

I'm cycling through entities using countcollisions and seeing if anything's hit it. Obviously this can't be the correct way of doing it, so how does one get blitz to report what's been hit and by what?

For example,

for n=0 to max_shots
blah
blah
blah
c=CountCollisions(shot(n))
If c>0
     for nn=0 to max_objects
     c=CountCollisions(Object_mesh(nn))
     if c>0 And object_health(nn)>0
           "object nn has been hit by shot n"
            endif
     next
     endif
next

This works fine, however, it just seems to be a painfully bad way of doing it!

Suggestions would be appreciated!

Binary_Moon

(Posted 2003) [#2]

you can use the command collisionEntity(entity, index) to find out what object collided with each collision.

Would be easier to do if you used types though :)

for i=1 to countcollisions(shot(n))
   for nn=0 to maxObjects
      if collisionEntity(shot(n),i)=object_mesh(nn)
         ;do the health stuff
      endif
   next
next

If you used types you could use the object and handle commands to get rid of the loop in the middle (the nn one) and get access to the object directly which would obviously cut out a lot of checking

sonokong

(Posted 2006) [#3]

Yeah, I agree

Stevie G

(Posted 2006) [#4]

EDIT : [Oops didn't realise this was 3 years old]

Binary_Moon

(Posted 2006) [#5]

I'm not sure what the point of the "yeah, I agree" comment was but this post is 3 years old. I think Rob may have found a solution by now.