[Answered]Help with Transform.Rotate()

Unity Engine
1

Hi. I can’t find/figure how to make it so that when I press a directional key (or two at once), my Game Object/character controller goes in the corresponding direction. Basically, when the user presses Left, the object will face that direction in move. Right now, I use Transform.Rotate, but it only adds to the object’s current angle, instead of “setting” it at that angle like it should.
Observe:

if (Input.GetKey("down")  direction != 2)
		{
			transform.Rotate(0, 180, 0);
			direction = 2;
		}
		if (Input.GetKey("up")  direction != 1)
		{
			transform.Rotate(0, 0, 0);
			direction = 1;
		}
		if (Input.GetKey("left")  direction != 3)
		{
			transform.Rotate(0, 270, 0);
			direction = 3;
		}
		if (Input.GetKey("right")  direction != 4)
		{
			transform.Rotate(0, 90, 0);
			direction = 4;
		}

How do I make it rotate towards a direction and not just rotate by that angle?

2

Hi, welcome to the forum!

To set the angle of rotation, you should create the rotation as a Quaternion and assign it to the transform.rotation property.

3

I am having the same problem.

I can’t seem to understand how to rotate the Quaternion works. how would I say set it to 30 degrees?

I guess a follow up question is when you pass it arguments does it interpret them as degrees, radians, or what?

Any help with this would be greatly appreciated.

4

You can rotate around the world axes using Quaternion.Euler. The angles are given in degrees - everything in Unity works in degrees except the trigonometric functions, which use radians.

5

Thank you that solved my problem.

case SPREAD:

     shot = Instantiate( bullet, transform.position, transform.rotation ) as GameObject;

     GameObject shot2 = Instantiate( bullet, transform.position, (Quaternion.Euler(0, 10, 0)) ) as GameObject;
			
     GameObject shot3 = Instantiate( bullet, transform.position, (Quaternion.Euler(0, -10, 0)) ) as GameObject;
break;

As a note that is done in C#.

6

That answered my question. Thanks!