case3

Assets/Scripts/StudyCase1/ThirdCharacterController.cs

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+using UnityEngine;
+using UnityEngine.InputSystem;
+
+namespace StudyCase1
+{
+    public class ThirdCharacterController : MonoBehaviour
+    {
+        public CharacterController characterController;
+        public Transform forward;
+        public Transform model;
+        public Cinemachine.CinemachineVirtualCamera vCam;
+        public float moveSpeed = 5f;
+        public float jumpSpeed = 2f;
+        public float turnSpeed = 10f;
+        public float gravity = 10f;
+        Vector3 moveDir;
+        Vector2 moveInput;
+        private void Update()
+        {
+            moveDir = new Vector3(moveInput.x, moveDir.y, moveInput.y);
+            forward.eulerAngles = new Vector3(0, vCam.transform.eulerAngles.y, 0);
+            moveDir = forward.TransformDirection(moveDir);
+            if (moveInput != Vector2.zero)
+            {
+                Quaternion target = Quaternion.LookRotation(new Vector3(moveDir.x, 0, moveDir.z));
+                model.rotation = Quaternion.Slerp(model.rotation, target, turnSpeed * Time.deltaTime);
+            }
+            if (!characterController.isGrounded)
+                moveDir.y -= gravity * Time.deltaTime;
+            characterController.Move(moveDir * moveSpeed * Time.deltaTime);
+        }
+        public void OnMove(InputAction.CallbackContext context)
+        {
+            if (characterController.isGrounded)
+                moveInput = context.ReadValue<Vector2>();
+            else moveInput = Vector2.zero;
+        }
+        public void OnJump(InputAction.CallbackContext context)
+        {
+            if (context.performed && characterController.isGrounded)
+            {
+                moveDir.y = jumpSpeed;
+            }
+        }
+    }
+}

Assets/Scripts/StudyCase1/ThirdCharacterController.cs.meta

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