Restricting gameobject within camera limits

I initially tried restricting my gameobjects movement within screen boundaries, but couldn't do much.

What I want now is that my gameobject's movement should be restricted within the visible camera limits, i.e. even if I press the 'Right' key when the player is on the edge of my camera window - the player should not move.
Any help would be appreciated...

Working on a 2D game with orthographic cam...

 

You could use a collider with" Trigger " enabled and "OnTriggerEnter2D" disable the input from you right key.

 

But how do I detect te camera limits..x and y positions to be precise?

 

You could go with percentage. Like, you have a screen width of 1920 e.g., this is 100%. than you can ask for the screenpoint to world position and check that Vector, this is also your 100%, so, if your player moves ahead of that Vector, bind him to back to the max position. Just a suggestion

 

This sounds like what you're looking for: http://docs.unity3d.com/ScriptReference/Camera.ViewportToWorldPoint.html

 

^ As @krougeau writes, something like this:

Code (csharp):

1. private Rect cameraRect;
2. void Start()
3. {
4.     var bottomLeft = Camera.main.ScreenToWorldPoint(Vector3.zero);
5.     var topRight = Camera.main.ScreenToWorldPoint(new Vector3(Camera.main.pixelWidth, Camera.main.pixelHeight));
6.     cameraRect = new Rect(bottomLeft.x, bottomLeft.y, topRight.x - bottomLeft.x, topRight.y - bottomLeft.y);
7. }

Then clamp the position inside cameraRect:

Code (csharp):

1. Vector2 allowedPosition = cameraRect.Clamp(desiredPosition);

 

This gives an error
error CS1061: Type `UnityEngine.Rect' does not contain a definition for `Clamp' and no extension method `Clamp' of type `UnityEngine.Rect' could be found (are you missing a using directive or an assembly reference?)

 

The Rect.Clamp code above assumes desiredPosition is a Vector2. If it's a Vector3, or if it doesn't work in your version of Unity, just clamp it manually:

Code (csharp):

1. Vector2 allowedPosition = new Vector2(
2.     Mathf.Clamp(desiredPosition.x, cameraRect.xMin, cameraRect.xMax),
3.     Mathf.Clamp(desiredPosition.y, cameraRect.yMin, cameraRect.yMax));

 

If you want to clamp/restrict gameobjects on the boundary of Minimap, here are the links

Youtube:

Step by step tutorial:
http://techscenarios.com/unity3d-cl...lamp-on-minimap-boundary-free-scripts-part-4/