Having issues with "WorldToScreenPoint"

Questions & Answers
1

Im having issues with “WorldToScreenPoint”, The X and Z are fine but Y is messed up. Seen here (the red box, meant to be on the tank at all times):

http://tristanjc.com/unity/newweb.html

Just using:

void Update () {
		
	if(target){
		guiPos = cam.WorldToScreenPoint(target.position);				
	}		
}
	
void OnGUI(){
	GUI.DrawTexture(new Rect(guiPos.x - 12.5f,guiPos.y - 12.5f,50f,50f),targetTexture);
}
2

You will need to use some inverse stuff to translate the World To Screen Point to the GUI correctly.

Example:

 Vector2 screenPosition;
int screenHeightInt;

void Start()
{
screenHeightInt = Screen.height;
}
    
    void OnGUI()
    {
    //now you can use the position as expected
    //apply your code here
    GUI.BeginGroup (new Rect(screenPosition.x - 25, screenPosition.y, size.x, size.y), emptyTex, healthBarStyle);
    }
    

void Update()
    {
    //Get Position of the Object
    screenPosition = mainCam.WorldToScreenPoint(healthBarObject.transform.position);
    
    //Get inverse of y-position		
    screenPosition.y = screenHeightInt - (screenPosition.y + 1);
    }