it’s just the opposite of the else, which checks if the class upDownRot is less than 0, and the parameter is greater than 0.

Hopefully this time it won’t censor out the entire block of text up there and replace it with a 0.

I’d noticed the reversing of the controls myself and had implemented something similar to what you have posted in a project I had been using similar code to the stuff in the article. I’ll update the article to point this out.

Sorry for all this massive spammage.

Here’s what I implemented to solve this:
if (Math.Abs(this.upDownRot + (upDownRot * rotationSpeed)) < 1.0f)
this.upDownRot += upDownRot * rotationSpeed;
else
{
if (this.upDownRot 0)
this.upDownRot += upDownRot * rotationSpeed;
else if (this.upDownRot > 0 && upDownRot < 0)
this.upDownRot += upDownRot * rotationSpeed;
}

it's probably not the best way to approach this, but it works for me.

I had a quick look at this and I think I see what you mean. This happens after you rotate the camera up or down with the right thumbstick and then you move forward the camera will freely move in 3D space. Am I right in guessing that the behaviour you are looking for is that when the player looks up and then moves forward, they will stay on the same plane while moving like in conventional FPS games?

In order to stop the player’s Y component being modified after rotation you need to remove the rotation around the X axis for the translation transform.

Update the position changing line in the Update method of FirstPersonCamera to:

position += Vector3.Transform(translation, Matrix.CreateRotationY(this.leftRightRot)) * translationSpeed;

This will only transform the camera position around the Y axis (ie looking left and right).

Hope that helps

I have one question though.

As I press my left stick forward, the Y increases as the Z decreases.
Shouldn’t only the Z value be changing?

Looks like it could be a case sensitivity issue if you are using my Camera class exactly as it is above. Your error says you are using “ViewMatrix” (with an uppercase ‘V’ at the start) however my Camera class declares the variable “public Matrix viewMatrix” (note lowercase ‘v’).

If you are using that class, I would definately recommend making the variables private and wrapping them in a property.

Hope this helps.

‘Cameras.Camera’ does not contain a definition for ‘ViewMatrix’

Any help would be greatly appreciated.
Thanks.