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Assets/_Scripts/Mover.cs

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+using UnityEngine;
+
+[RequireComponent(typeof(Rigidbody), typeof(BoxCollider), typeof(PlayerInput))]
+public class Mover : MonoBehaviour
+{
+    [SerializeField] private float moveSpeed = 6f;
+    [SerializeField] private float jumpForce = 7f;
+    [SerializeField] private float groundCheckExtraDistance = 0.1f;
+
+    private Rigidbody rb;
+    private BoxCollider boxCollider;
+    private PlayerInput playerInput;
+
+    private void Awake()
+    {
+        rb = GetComponent<Rigidbody>();
+        boxCollider = GetComponent<BoxCollider>();
+        playerInput = GetComponent<PlayerInput>();
+        rb.freezeRotation = true;
+    }
+
+    private void FixedUpdate()
+    {
+        Vector3 moveDirection = playerInput.MoveInput;
+        Vector3 targetVelocity = new Vector3(
+            moveDirection.x * moveSpeed,
+            rb.velocity.y,
+            moveDirection.z * moveSpeed);
+
+        rb.velocity = targetVelocity;
+
+        if (moveDirection.sqrMagnitude > 0.001f)
+        {
+            transform.forward = moveDirection;
+        }
+
+        if (playerInput.ConsumeJump() && IsGrounded())
+        {
+            rb.velocity = new Vector3(rb.velocity.x, 0f, rb.velocity.z);
+            rb.AddForce(Vector3.up * jumpForce, ForceMode.Impulse);
+        }
+    }
+
+    private bool IsGrounded()
+    {
+        Bounds bounds = boxCollider.bounds;
+        float rayDistance = bounds.extents.y + groundCheckExtraDistance;
+        return Physics.Raycast(bounds.center, Vector3.down, rayDistance, Physics.DefaultRaycastLayers, QueryTriggerInteraction.Ignore);
+    }
+}