Height and width (pixels ) vs X and Y (axis units)

Hello,

I created a player sprite and I don't want it to move any further than camera borders are. I can get Screen.width and Screen.height values but I don't know how to use those to reposition or make a comparison with translation.position.x nor .y nor .z. I know Screen.height and .width are integer values which we all know as pixels but i don't know how to make a connection with xyz axis units.

How can I limit player sprite movement if I know dimensions of a screen?

 

You want to utilize the camera class. It has functions to convert screen coordinates to world coordinates and vice versa.

http://docs.unity3d.com/Documentation/ScriptReference/Camera.WorldToScreenPoint.html

 

WorldToScreenPoint seems to work great in the editor but as soon as you get onto an iOS device its coordinates are offset rather badly. Seems to be a bug in Unity possibly?

 

Maybe WorldToViewportPoint is better suited for your needs. It takes into account the viewport of the camera.