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 MOPixel won't stay put? 
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Joined: Sat Jun 19, 2010 5:02 pm
Posts: 331
Location: Mekkan
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Post MOPixel won't stay put?
How come this script doesn't work? :-(

Code:
function Create(self)
   self.StartPos = self.Pos;
   self.StartVel = self.Vel;
end
function Update(self)
   self.Pos = self.StartPos;
   self.Vel = self.StartVel;
end


Wed Sep 14, 2011 1:39 am
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Data Realms SUPER Elite
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Post Re: MOPixel won't stay put?
Just do

Code:
function Update(Self)
self.Vel = Vector(0,0);
end


And set HitsMOs and GetsHitByMOs to 0.


Wed Sep 14, 2011 1:44 am
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Post Re: MOPixel won't stay put?
And if you pin the MOPixel and give it a speed with lua?


Wed Sep 14, 2011 1:52 am
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Post Re: MOPixel won't stay put?
No, Nonsequitorian, I need it to retain its speed, that way the trail still shows.


Wed Sep 14, 2011 1:54 am
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Post Re: MOPixel won't stay put?
Then how is it supposed to stay put?


Wed Sep 14, 2011 2:07 am
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Post Re: MOPixel won't stay put?
If it doesn't change positions it won't have speed.


Wed Sep 14, 2011 2:11 am
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Post Re: MOPixel won't stay put?
No, if it doesn't change positions, it will still have speed, as long as the velocity is >0.
Currently, self.StartPos and self.StartVel are storing a reference to self.Pos and self.Vel, respectively. That means every Update, you're essentially doing this:
Code:
   self.Pos = self.Pos;
   self.Vel = self.Vel;

Lua is a bit weird like that. To do what you want, set the variables like so:
Code:
   self.StartPos = Vector(self.Pos.X, self.Pos.Y);
   self.StartVel = Vector(self.Vel.X, self.Vel.Y);


Wed Sep 14, 2011 2:21 am
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Post Re: MOPixel won't stay put?
Cortex Command is wierd :0


Wed Sep 14, 2011 2:25 am
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Post Re: MOPixel won't stay put?
Not really. Self.Pos is not a constant, and will change throughout the game. Self.Pos.X and Self.Pos.Y are constants at the time you reference them, so you have to reconstruct the Vector for the two inter-frame-constant variables in order to give a true starting value.

Which is exactly what TLB said in more words.


Wed Sep 14, 2011 5:19 pm
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Post Re: MOPixel won't stay put?
Iiiiiew references... I had to deal with them in Java using clone()... So much pain....

It worked.


Fri Sep 16, 2011 2:01 am
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