Data Realms Fan Forums
http://45.55.195.193/

Problems with SetMagnitude... Again.
http://45.55.195.193/viewtopic.php?f=73&t=18994		 Page 1 of 1
Author:  Areku [ Tue Jun 15, 2010 11:14 pm ]
Post subject:  Problems with SetMagnitude... Again.
OK, frankly, I'm pretty sure this should work:

Code:
function Create(self)
   self.VelMag = 0;
   self.VelMag = self.Vel.Magnitude;
   self.NewV = Vector(0,0);
end



function Update(self)

   if self.Vel.Magnitude < 80 then
      self.NewV = self.Vel;
      self.NewV:SetMagnitude(self.VelMag);
      self.Vel = Self.NewV;
   end
end


And yet it doesn't. When run, the console just returns "No overload of Vector:SetMagnitude(const.Vector,number) matched the arguments Vector:SetMagnitude(custom[float])". I also tried just typing self.NewV:SetMagnitude(80); , but that doesn't work either. Any thoughts on the reason?
Author:  CaveCricket48 [ Tue Jun 15, 2010 11:25 pm ]
Post subject:  Re: Problems with SetMagnitude... Again.
That's the same as this:

Code:
80


You need a variable.

Code:
numberofsheep = 80


Like that.
Author:  Areku [ Wed Jun 16, 2010 1:04 am ]
Post subject:  Re: Problems with SetMagnitude... Again.
Eh, no?

I changed the code to

Code:
function Create(self)
   self.NewMag = 80;
   self.NewV = Vector(0,0);
end



function Update(self)

   if self.Vel.Magnitude < 80 then
      self.NewV = self.Vel;
      self.NewV:SetMagnitude(self.NewMag);
      self.Vel = Self.NewV;
   end
end


And it still doesn't work.
Author:  TheLastBanana [ Wed Jun 16, 2010 1:28 am ]
Post subject:  Re: Problems with SetMagnitude... Again.
What CaveCricket48 means is this:
Code:
self.NewV:SetMagnitude(self.NewMag);

This doesn't actually change the variable; it returns a copy of the variable with the magnitude changed. You want this:
Code:
self.NewV = self.NewV:SetMagnitude(self.NewMag);
Author:  Areku [ Wed Jun 16, 2010 1:34 am ]
Post subject:  Re: Problems with SetMagnitude... Again.
Gee, you're right!

...Even so,

Code:
function Create(self)
   self.NewMag = 80;
   self.NewV = Vector(0,0);
end



function Update(self)

   if self.Vel.Magnitude < 80 then
      self.NewV = self.Vel;
      self.NewV = self.NewV:SetMagnitude(self.NewMag);
      self.Vel = Self.NewV;
   end
end


Still doesn't work. Same error as before.
Author:  Kyred [ Wed Jun 16, 2010 2:47 am ]
Post subject:  Re: Problems with SetMagnitude... Again.
You capitalized the "S" in the last self. (ie. change Self.NewV to self.NewV)
Author:  Areku [ Wed Jun 16, 2010 2:50 am ]
Post subject:  Re: Problems with SetMagnitude... Again.
You're right about that.

What doesn't affect the fact that the error appears on the SetMagnitude function, not on that line.
Author:  CaveCricket48 [ Wed Jun 16, 2010 2:55 am ]
Post subject:  Re: Problems with SetMagnitude... Again.
Try, instead of
Code:
self.NewV = self.Vel

do

Code:
self.NewV = Vector(self.Vel.X,self.Vel.Y))


Do the same with all vector calling/setting. While both should have the same results, I've had instances where that's not the case.
Author:  Areku [ Wed Jun 16, 2010 3:09 am ]
Post subject:  Re: Problems with SetMagnitude... Again.
That just did the trick. Which is kind of creepy, actually.

Many thanks to ye all.
Author:  Kyred [ Wed Jun 16, 2010 3:29 am ]
Post subject:  Re: Problems with SetMagnitude... Again.
I'm still curious why using SetMagnitude didn't work out right. Anyone know why?
Author:  TheLastBanana [ Wed Jun 16, 2010 3:38 am ]
Post subject:  Re: Problems with SetMagnitude... Again.
It's an issue in the actual engine, which is written in C++. The function doesn't take a constant value, but apparently the variables are stored as constant values, while creating a new Vector is a different story.
Author:  Kyred [ Wed Jun 16, 2010 6:52 am ]
Post subject:  Re: Problems with SetMagnitude... Again.
That's really odd, but that does sort of make sense. Now I'm just wondering when the engine considers a Lua variable a constant and when it doesn't?
Author:  Grif [ Wed Jun 16, 2010 8:04 pm ]
Post subject:  Re: Problems with SetMagnitude... Again.
Presumably, at completely batshit insane times that are wholly unpredictable.

Remember, this is Cortex Command.
Author:  Areku [ Wed Jun 16, 2010 8:54 pm ]
Post subject:  Re: Problems with SetMagnitude... Again.
Grif wrote:
Presumably, at completely batshit insane times that are wholly unpredictable.

Remember, this is Cortex Command.



Because Data obviously coded it using the Miracle File System.
Page 1 of 1 All times are UTC [ DST ]
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/