Back to General and Gameplay Programming

Probably a very simple problem

General and Gameplay Programming Programming

Started by Nibbles July 30, 2001 03:41 PM

2 comments, last by Nibbles 22 years, 8 months ago

Nibbles

569

Author

July 30, 2001 03:41 PM

hi, I''m working on a camera and I can''t get this to work:

  
void Init_Camera(CCamera Camera)
{
	CVector PositionVectorTemp =	{ 0.0f, 0.0f, 0.0f };
	CVector UpVectorTemp =			{ 0.0f, 1.0f, 0.0f };
	CVector ViewVectorTemp =		{ 0.0f, 0.0f, 1.0f };

	Camera.PositionVector = PositionVectorTemp;
	Camera.UpVector = UpVectorTemp;
	Camera.ViewVector = ViewVectorTemp;
}

getting Camera.PositionVector (or any other one), doesn''t get the data from PositionVectorTemp (or any other). Was wondering why. Thanks, Scott Email Website
"If you try and don''t succeed, destroy all evidence that you tried."

Stellar Sprites - Unity 2D Procedural Spaceship and Planets

Scott Wojtowicz - [http://scottw.comli.com/wp_dev/]

Nibbles

569

Author

July 30, 2001 03:48 PM

nevermind... i solved it.

simply changing

  void Init_Camera(CCamera Camera)

  void Init_Camera(CCamera &Camera)

did the trick, but I really don''t know why...

Scott

Email
Website

"If you try and don''t succeed, destroy all evidence that you tried."

Stellar Sprites - Unity 2D Procedural Spaceship and Planets

Scott Wojtowicz - [http://scottw.comli.com/wp_dev/]

Stoffel

250

July 30, 2001 03:54 PM

Because your original version is "pass by value", meaning a new camera is copied from your argument and passed to the function. The second version is "pass by reference", where the actual argument is passed into the function. Without using "*" or "&" on your arguments, they are all passed by value.

Nibbles

569

Author

July 30, 2001 04:41 PM

ah, groovy.

Now to figure out this damn gimble lock

Thanks,
Scott

Email
Website

"If you try and don''t succeed, destroy all evidence that you tried."

Stellar Sprites - Unity 2D Procedural Spaceship and Planets

Scott Wojtowicz - [http://scottw.comli.com/wp_dev/]

Probably a very simple problem

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Probably a very simple problem

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Reticulating splines