How to smothly move the character controller between x positions like in Subway Surfer in Unity? - unity3d

Question

I'm trying to replicate the movement from Subway Surfers in Unity but I can't achieve that.
The character is located in the position 0 in the x-axis and when the left button is pressed the player will subtract 3 from the current position, and if the right button is pressed the player will add 3 to the current position making him move between -3,0,3 in the x-axis and all of this keeping the y and z axes unchanged.
I've tried using both Lerp and Slerp but I just couldn't achieve what I wanted. I've come down to a broken code that also changes the y, z-axis what I don't want to do:
var currPos = transform.position;
var currPosX = currPos.x;
if (Input.GetKeyUp(KeyCode.A))
{
if (currPosX > -horizontalSteps)
{
var newPos = new Vector3(currPosX - horizontalSteps, currPos.y, currPos.z);
newPos = Vector3.Slerp(currPos, newPos, 3);
Controller.Move(newPos);
}
}
if (Input.GetKeyUp(KeyCode.D))
{
if (currPosX < horizontalSteps)
{
var newPos = new Vector3(currPosX + horizontalSteps, currPos.y, currPos.z);
newPos = Vector3.Slerp(currPos, newPos, 3);
Controller.Move(newPos);
}
}

Answer 1

there is a very simple way
the character have 3 states so let's say we have a state variable (-1 , 0 , 1) for left, mid, and right
, and init with 0
if the player press right state++, if press left state--
completed if statement
if(button.right && state < 1) state++; "move right script";
else if(button.left && state > -1) state-- "move left script";
well,
about moving
I prefer Vector3.MoveTowards()for smoothly moving and avoid issues
try this example
using UnityEngine;
using UnityEngine.UI;
public class movv : MonoBehaviour
{
public Button right;
public Button left;
public float speed;
private int state = 0;
void Start()
{
Button btn = right.GetComponent<Button>();
btn.onClick.AddListener(delegate { moveright(); });
Button btn2 = left.GetComponent<Button>();
btn2.onClick.AddListener(delegate { moveleft(); });
void moveright()
{
if (state < 1) state++;
}
void moveleft()
{
if(state > -1) state--;
}
}
void Update()
{
Vector3 x = new Vector3 (state * 3, transform.position.y, transform.position.z);
transform.position = Vector3.MoveTowards(transform.position, x, speed * Time.deltaTime);
}
}
that's a quick one...
Hint:
this code works when the character position on the x-axis equal to 0
if not,
this is a general example,
using UnityEngine;
using UnityEngine.UI;
public class movv : MonoBehaviour
{
public Button right;
public Button left;
public float speed;
private Vector3 x;
private int state = 0;
private int target = 0;
void Start()
{
x = transform.position;
Button btn = right.GetComponent<Button>();
btn.onClick.AddListener(delegate { moveright(); });
Button btn2 = left.GetComponent<Button>();
btn2.onClick.AddListener(delegate { moveleft(); });
void moveright()
{
if (state < 1)
{
target = 1;
x = new Vector3(transform.position.x + target * 3, transform.position.y, transform.position.z);
state++;
}
}
void moveleft()
{
if (state > -1)
{
target = -1;
x = new Vector3(transform.position.x + target * 3, transform.position.y, transform.position.z);
state--;
}
}
}
void Update()
{
transform.position = Vector3.MoveTowards(transform.position, x, speed * Time.deltaTime);
}
}