scroll to increase and decrease walk speed

Assets/Scripts/FirstPersonController.cs

@@ -26,6 +26,11 @@ public class FirstPersonController : MonoBehaviour
     [SerializeField] private KeyCode crouchKey = KeyCode.C;
 
     [Header("Movement Parameters")]
+    [SerializeField] private float minWalkSpeed = 1.0f;
+    [SerializeField] private float maxWalkSpeed = 5.0f;
+    [SerializeField] private float walkSpeedInterval = 0.5f;
+    private float currentWalkSpeed;
+
     [SerializeField] private float walkSpeed = 3.0f;
     [SerializeField] private float sprintSpeed = 6.0f;
     [SerializeField] private float crouchSpeed = 1.5f;
@@ -75,6 +80,7 @@ public class FirstPersonController : MonoBehaviour
         defaultYPos = playerCamera.transform.localPosition.y;
         Cursor.lockState = CursorLockMode.Locked;
         Cursor.visible = false;
+        currentWalkSpeed = walkSpeed;
 
     }
 
@@ -95,6 +101,7 @@ public class FirstPersonController : MonoBehaviour
             CanMove = true;
             HandleMovementInput();
             HandleMouseLook();
+            HandleSpeedChange();
 
             if (canJump)
                 HandleJump();
@@ -190,5 +197,29 @@ public class FirstPersonController : MonoBehaviour
 
         duringCrouchAnimation = false;
     }
+    private void HandleSpeedChange()
+    {
+        float scroll = Input.GetAxis("Mouse ScrollWheel");
+
+        if (scroll > 0)
+        {
+            // Increase walk speed if within the maximum limit
+            if (currentWalkSpeed < maxWalkSpeed)
+            {
+                currentWalkSpeed += walkSpeedInterval;
+            }
+        }
+        else if (scroll < 0)
+        {
+            // Decrease walk speed if within the minimum limit
+            if (currentWalkSpeed > minWalkSpeed)
+            {
+                currentWalkSpeed -= walkSpeedInterval;
+            }
+        }
+
+        // Update the walk speed
+        walkSpeed = currentWalkSpeed;
+    }
 
 }