How to rotate object (z-axis only) slowly? C#

Questions & Answers
1

I’m trying to make simple moped and i want it to rotate on z-axis when key A or D is pressed.

When i press D to turn right → moped rotates 30 degrees right (slowly)
When i press A to turn left → moped rotates 30 degrees left (slowly)

Any ideas how i can do that?

I’m using C#

2

Here you go:
Just attach this script to whatever gameobject you want, assign the gameobject you want to rotate under target and set the rotation speed to whatever you want and you should be good to go. I haven’t tested this but I’m pretty sure it should work.

using UnityEngine;
using System.Collections;

public class RotateOnZAxis : MonoBehaviour {

	//Target rotation speed
	public float rotateSpeed = 0.5f;

	//Max angle rotation
	public float maxAngle = 30.0f;

	//Rotationtarget
	public Transform target;

	//Origin Angle
	public float originAngle = 0.0f;

	//Reset position?
	public bool resetPosition;

	//The Current Angle
	public float currentAngle;

	//Actual rotation speed
	private float rotSpeed;

	void Update(){

		//Calculate target rotation speed
		rotSpeed = rotateSpeed * Time.deltaTime;

		//Get the current angle
		currentAngle = target.localEulerAngles.z;
	
		//If current value is between 180 and 360 degrees, get it's negative equivalent
		//This just makes the math easier
		currentAngle = (currentAngle > 180) ? currentAngle - 360 : currentAngle;

		//If the current angle is greater than the max angle, set it equal to the max angle
		if (currentAngle > maxAngle) {
			currentAngle = maxAngle;
		}
		//Or If the current angle is smaller than the negative max angle equivalent, 
		//set it equal to the negative max angle equivalen
		else if(currentAngle < -maxAngle){
			currentAngle = -maxAngle;
		}


		//If press A, rotate the angle to the left, at the specified speed
		if (Input.GetKey (KeyCode.A)){
			if (currentAngle < maxAngle) {
				target.Rotate (0, 0, rotSpeed);
			}
		}

		//If press D, rotate the angle to the right, at the specified rotation speed
		if (Input.GetKey (KeyCode.D)) {

		if (currentAngle > -maxAngle) {
				target.Rotate (0, 0, -rotSpeed);
			
			}
		}

		//If either A or D is released, then set reset position to true
		if (Input.GetKeyUp (KeyCode.A) || Input.GetKeyUp (KeyCode.D)) {
			resetPosition = true;
		}

		//If reset position is set to true
		if (resetPosition == true) {
		
			//And as long as A or D are not pressed 
			if ((!Input.GetKey (KeyCode.A) && !Input.GetKey (KeyCode.D))) {

				//If the current angle is greater than the origin angle then decrease it's value
				if (currentAngle > originAngle) {
					target.Rotate (0, 0, -rotSpeed);
				} 
				//Or if the current angle is less than origin angle then increase it's value
				else if (currentAngle < originAngle) {
					target.Rotate (0, 0, rotSpeed);
				}

				//If the current angle is between 0.1 and -0.1 degrees, then set reset to false
				if (currentAngle < 0.1f && currentAngle > -0.1f) {
					currentAngle = 0;
					resetPosition = false;
				}
			}
		}
	}
}