added gun models and enemy spawner

Assets/Scripts/WeaponBob.cs

@@ -0,0 +1,54 @@
+using UnityEngine;
+
+public class WeaponBob : MonoBehaviour
+{
+    [Header("Bob Settings")]
+    public float bobFrequency = 10f;
+    public float bobHorizontalAmplitude = 0.05f;
+    public float bobVerticalAmplitude = 0.03f;
+
+    [Header("Sprint Multiplier")]
+    public float sprintBobMultiplier = 1.5f;
+
+    [Header("Smoothing")]
+    public float returnSpeed = 6f;
+
+    private Vector3 originalLocalPos;
+    private float bobTimer = 0f;
+    private CharacterController controller;
+
+    void Start()
+    {
+        originalLocalPos = transform.localPosition;
+        controller = GetComponentInParent<CharacterController>();
+    }
+
+    void Update()
+    {
+        if (controller == null) return;
+
+        // Check if the player is moving on the ground
+        Vector3 horizontalVelocity = new Vector3(controller.velocity.x, 0f, controller.velocity.z);
+        bool isMoving = horizontalVelocity.magnitude > 0.5f && controller.isGrounded;
+
+        if (isMoving)
+        {
+            float multiplier = Input.GetKey(KeyCode.LeftShift) ? sprintBobMultiplier : 1f;
+            bobTimer += Time.deltaTime * bobFrequency * multiplier;
+
+            float bobX = Mathf.Sin(bobTimer) * bobHorizontalAmplitude * multiplier;
+            float bobY = Mathf.Sin(bobTimer * 2f) * bobVerticalAmplitude * multiplier;
+
+            transform.localPosition = originalLocalPos + new Vector3(bobX, bobY, 0f);
+        }
+        else
+        {
+            bobTimer = 0f;
+            transform.localPosition = Vector3.Lerp(
+                transform.localPosition,
+                originalLocalPos,
+                Time.deltaTime * returnSpeed
+            );
+        }
+    }
+}