Not Rotating Properly

Questions & Answers
1

var upKey: KeyCode;
var downKey: KeyCode;
var leftKey: KeyCode;
var rightKey: KeyCode;

	var gO: GameObject;

function Update () {

	if(Input.GetKeyDown(upKey)){
		gO.transform.rotation.z = 270;
	}
	else if(Input.GetKeyDown(downKey)){
		gO.transform.rotation.z = 90;
	}
	else if(Input.GetKeyDown(leftKey)){
		gO.transform.rotation.z = 0;
	}
	else if(Input.GetKeyDown(rightKey)){
		gO.transform.rotation.z = 180;
	}
}

When ever i go down or up it sticks at 180 degrees on the z axis. Can someone help me?

2

Tranform.rotation is of type Quaternion. It’s w,x,y,z properties are not the angles you are expecting.

If you want to apply angles use the following pattern:

var angles: Vector3 = tranform.rotation.eulerAngles;
angle.z = 90.0f;
tranform.rotation = Quaternion.Euler(angles);
3

You are trying to modify the quaternions which I think is not what you intend. Quaternions have 4 components w,x,y,z. What you want to modify is the x, y and z rotation of the object. So, here is the script that should suit your needs:

var upKey: KeyCode;
    var downKey: KeyCode;
    var leftKey: KeyCode;
var rightKey: KeyCode;
 
    var gO: GameObject;
 
function Update () {
 
    if(Input.GetKeyDown(upKey)){
       gO.transform.rotation.eulerAngles.z = 270;
    }
    else if(Input.GetKeyDown(downKey)){
       gO.transform.rotation.eulerAngles.z = 90;
    }
    else if(Input.GetKeyDown(leftKey)){
       gO.transform.rotation.eulerAngles.z = 0;
    }
    else if(Input.GetKeyDown(rightKey)){
       gO.transform.rotation.eulerAngles.z = 180;
    }
}