RunRunRunP/Assets/Code/Player/Player.cs

using UnityEngine;
using UnityEngine.InputSystem;

namespace Code.Player
{
    public class Player : MonoBehaviour
    {
        [SerializeField] private Transform[] runPositions = new Transform[3];
        [SerializeField] private float jumpStrength;
        private Rigidbody _rigidbody;
        private void Awake()
        {
            _rigidbody = GetComponent<Rigidbody>();
            
            InputSystem.actions.actionMaps[0].actions[0].performed += Jump;
            InputSystem.actions.actionMaps[0].actions[1].performed += MoveRight;
            InputSystem.actions.actionMaps[0].actions[2].performed += MoveLeft;
        }

        private void OnDestroy()
        {
            InputSystem.actions.actionMaps[0].actions[0].performed -= Jump;
            InputSystem.actions.actionMaps[0].actions[1].performed -= MoveRight;
            InputSystem.actions.actionMaps[0].actions[2].performed -= MoveLeft;
        }

        private void Jump(InputAction.CallbackContext context)
        {
            _rigidbody.AddForce(new(0,jumpStrength,0), ForceMode.Impulse);
        }

        private int _currentTarget = 1;
        private void MoveRight(InputAction.CallbackContext context)
        {
            if(_currentTarget != 2) _currentTarget++;
            ChangePosition();
        }
        private void MoveLeft(InputAction.CallbackContext context)
        {
            if(_currentTarget != 0) _currentTarget--;
            ChangePosition();
        }

        private void ChangePosition()
        {
            transform.position = runPositions[_currentTarget].position;
        }
    }
}