Camera Issues

[minich21]

I think what is killing me is the whole Y is up... but my problem is I want to have my camera at a RTS/Diablo style angle.

I have my code setup like so for movement of the camera

Code:

if (game.Input.Keys.Contains(Keys.W))
            {
                EagleCameraManager.ActiveCamera.Translate(new Vector3(0,0.3f,0));
            }

            if (game.Input.Keys.Contains(Keys.A))
            {
                EagleCameraManager.ActiveCamera.Translate(new Vector3(-0.3f, 0, 0));
            }

            if (game.Input.Keys.Contains(Keys.D))
            {
                EagleCameraManager.ActiveCamera.Translate(new Vector3(0.3f, 0, 0));
            }

            if (game.Input.Keys.Contains(Keys.S))
            {
                EagleCameraManager.ActiveCamera.Translate(new Vector3(0, -0.3f, 0));
            }

works great moves the camera forward and backward left and right, the problem is my camera is facing straight down...  so I run this code

Code:

EagleCameraManager.ActiveCamera.LookAt(new Vector3(0, 15, 15), 0.25f);

and viola! my camera is exactly where I want it!!  ... now comes the problem, when i press a or d it moves left or right(thats good), but when i press w or s it goes forward and up or backward and down!!!  it works fine till i run that piece of code... been driving me nuts, any thoughts??

[Nemo Krad]

I think for W and S you want:

Code:

            if (game.Input.Keys.Contains(Keys.W))
            {
                EagleCameraManager.ActiveCamera.Translate(new Vector3(0,0,0.3f));
            }
            if (game.Input.Keys.Contains(Keys.S))
            {
                EagleCameraManager.ActiveCamera.Translate(new Vector3(0, 0, -0.3f));
            }

[minich21]

Actually i have different buttons for that

Code:

            if (game.Input.Keys.Contains(Keys.Q))
            {
                EagleCameraManager.ActiveCamera.Translate(new Vector3(0, 0, -0.3f));
            }

            if (game.Input.Keys.Contains(Keys.E))
            {
                EagleCameraManager.ActiveCamera.Translate(new Vector3(0, 0, 0.3f));
            }

I changed my code to Z as up vs Y, I might have to try changing it back and see...  but i should be able to use it the other way as well.

and every thing works great till i use the LookAt function, that gives me the right angle, but even though i'm only updating Y it updates Y & Z. 

[::sjm]

Set your Y axis back to up, translate the camera to some start position above your world and set the default view to be looking down (say, 30 degrees or something?) and do translations in the xz plane? Use rotations and not revolves, and only translate in the y when zooming (as well as either x and/or z depending on orientation)?

That sounds like it would work, I'm probably missing something.

[minich21]

Thanks!  Have to try it out, figured i'd have to go back to the y up, gonna take some getting used to!

[cannyshammy]

sovled this:

at the construction:

            this.Translate(new Vector3(0, -40, -20));     
            this.LookAt(new Vector3(), 0);

in the update:

        public void UpdateCameraControls()
        {
            Vector2 mouseMove = cInput.MouseMoved;
            ButtonList MouseButtons = cInput.MouseButtons;

            if (cInput.Keys.Contains(Keys.Left))
            {
                this.Translate(new Vector3(-0.3f, 0, 0));
            }
            if (cInput.Keys.Contains(Keys.Right))
            {
                this.Translate(new Vector3(0.3f, 0, 0));
            }
            if (cInput.Keys.Contains(Keys.Up))
            {
                _position += Vector3.Transform(new Vector3(0, 0, 0.3f), Matrix.CreateFromQuaternion(new Quaternion(0, 0, 0, 1)));
                this.Update();
            }
            if (cInput.Keys.Contains(Keys.Down))
            {
                _position += Vector3.Transform(new Vector3(0, 0, -0.3f), Matrix.CreateFromQuaternion(new Quaternion(0, 0, 0, 1)));
                this.Update();
            }
     }

[mikeschuld]

The whole y as up thing is what they chose for the api, although it does make some exporting programs a bit difficult that don't allow for axis swapping on exported models. :/