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Siric
Joined: Wed Oct 25, 2006 7:57 pm
Posts: 240
Location: Out there, among the stars.
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 Reversing Velocity How would you make Pixels/MOSrotatings in a Certain radius go in the Opposite Direction they were originally going?
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| Tue Jun 09, 2009 7:51 am |
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Grif
REAL AMERICAN HERO
Joined: Sat Jan 27, 2007 10:25 pm
Posts: 5655
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Re: Reversing Velocity if math.abs(target.Pos.X - self.Pos.X) < 30 and math.abs(target.pos.Y - self.Pos.Y) < 30 then
target.Vel = target.Vel * -1;
end
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| Tue Jun 09, 2009 7:53 am |
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mail2345
Joined: Tue Nov 06, 2007 6:58 am
Posts: 2054
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Re: Reversing Velocity Code: for particle in MovableMan.Particles
do
if math.sqrt(math.pow((particle.Pos.X-self.Pos.X),2) + math.pow((particle.Pos.Y - self.Pos.Y),2)) < <radius> then
particle.Vel = Vector(particle.Vel.X * -1, particle.Vel.Y * -1)
end
end
EDIT: Got ninjaed by grif. Wait, you can multiply vectors?
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| Tue Jun 09, 2009 7:55 am |
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Siric
Joined: Wed Oct 25, 2006 7:57 pm
Posts: 240
Location: Out there, among the stars.
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Re: Reversing Velocity Thanks Grif, I will try that.
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| Tue Jun 09, 2009 7:58 am |
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CrazyMLC
Joined: Fri Dec 22, 2006 4:20 am
Posts: 4772
Location: Good news everyone!
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Re: Reversing Velocity Nice shield code.
Would want to make it
f math.abs(target.Pos.X - self.Pos.X) < 30 and math.abs(target.pos.Y - self.Pos.Y) < 30 then
target.Vel = target.Vel * -0.3;
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| Tue Jun 09, 2009 8:57 am |
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Geti
Joined: Sun Jul 13, 2008 9:57 am
Posts: 4886
Location: some compy
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Re: Reversing Velocity why is everyone using freaking Pythagoras when there is a perfectly good vector.Magnitude variable?
seriously, math.abs(self.Pos.Magnitude - particle.Pos.Magnitude) works brilliantly.
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| Tue Jun 09, 2009 9:06 am |
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CrazyMLC
Joined: Fri Dec 22, 2006 4:20 am
Posts: 4772
Location: Good news everyone!
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Re: Reversing Velocity I wish I understood that.
Does that basically make it stop?
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| Tue Jun 09, 2009 9:07 am |
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piipu
Joined: Mon Jun 30, 2008 9:13 pm
Posts: 499
Location: Finland
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Re: Reversing Velocity Geti wrote: why is everyone using freaking Pythagoras when there is a perfectly good vector.Magnitude variable?
seriously, math.abs(self.Pos.Magnitude - particle.Pos.Magnitude) works brilliantly. I believe the reason for this is because triangles don't work that way.  Lets say we have two objects, the coordinates of which are (0,100) and (300,0). Your method gives a distance of (300 - 100) = 200. Pythagoras gives us the real distance which is sqrt((300 - 0) ^ 2 + (0 - 100) ^ 2) = 316.227766... which is not 200.
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| Tue Jun 09, 2009 9:36 am |
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Siric
Joined: Wed Oct 25, 2006 7:57 pm
Posts: 240
Location: Out there, among the stars.
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Re: Reversing Velocity None of the Code Snippets worked, No errors in the console, I have no idea whats wrong.
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| Tue Jun 09, 2009 12:27 pm |
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piipu
Joined: Mon Jun 30, 2008 9:13 pm
Posts: 499
Location: Finland
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Re: Reversing Velocity That's maybe because the radius of the effect is too small, the velocity gets reversed again the next frame, or there's something else wrong with your shield. If the script is directly attached to the shield, it will only work if the shield is not held by anyone.
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| Tue Jun 09, 2009 1:34 pm |
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Siric
Joined: Wed Oct 25, 2006 7:57 pm
Posts: 240
Location: Out there, among the stars.
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Re: Reversing Velocity piipu wrote: If the script is directly attached to the shield, it will only work if the shield is not held by anyone. Is it possible to make it work while held?
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| Tue Jun 09, 2009 1:36 pm |
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CrazyMLC
Joined: Fri Dec 22, 2006 4:20 am
Posts: 4772
Location: Good news everyone!
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Re: Reversing Velocity I don't think so, its the same deal with guns, you can't touch them when they're on an actor.
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| Tue Jun 09, 2009 1:38 pm |
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Siric
Joined: Wed Oct 25, 2006 7:57 pm
Posts: 240
Location: Out there, among the stars.
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Re: Reversing Velocity What if I added a Null sprited attachment and ran the script on it?
I forget if you can put attachments on HeldDevices.
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| Tue Jun 09, 2009 1:44 pm |
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CrazyMLC
Joined: Fri Dec 22, 2006 4:20 am
Posts: 4772
Location: Good news everyone!
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Re: Reversing Velocity Nice Idea.
I think that would work, if not, you could also have an emitter on it, and apply the code to the MOPixels.
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| Tue Jun 09, 2009 1:45 pm |
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piipu
Joined: Mon Jun 30, 2008 9:13 pm
Posts: 499
Location: Finland
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Re: Reversing Velocity The script needs to be in something that's not attached to anything. CC can't run lua from attachables at the moment.
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| Tue Jun 09, 2009 1:53 pm |
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