first commit

Assets/_Scripts/PlayerController.cs

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+using UnityEngine;
+
+[RequireComponent(typeof(CharacterController))]
+public class PlayerController : MonoBehaviour
+{
+    [Header("Movement")]
+    public float moveSpeed = 6f;
+    public float gravity = -20f;
+
+    private CharacterController characterController;
+    private Vector3 verticalVelocity;
+
+    private void Awake()
+    {
+        characterController = GetComponent<CharacterController>();
+    }
+
+    private void Update()
+    {
+        float horizontal = Input.GetAxisRaw("Horizontal");
+        float vertical = Input.GetAxisRaw("Vertical");
+
+        Vector3 input = new Vector3(horizontal, 0f, vertical);
+        input = Vector3.ClampMagnitude(input, 1f);
+
+        Vector3 move = input * moveSpeed;
+
+        if (characterController.isGrounded && verticalVelocity.y < 0f)
+        {
+            verticalVelocity.y = -1f;
+        }
+
+        verticalVelocity.y += gravity * Time.deltaTime;
+        move += verticalVelocity;
+
+        characterController.Move(move * Time.deltaTime);
+
+        if (input.sqrMagnitude > 0.001f)
+        {
+            transform.rotation = Quaternion.LookRotation(input, Vector3.up);
+        }
+    }
+}