Added gun shoot event and recoil

3D FPS/Assets/Scripts/Gun.cs

@@ -0,0 +1,51 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Events;
+
+public class Gun : MonoBehaviour
+{
+    public UnityEvent onGunShoot;
+    public float fireCoolDown;
+    public bool automatic;
+    
+
+    private float currentCooldown;
+
+
+    void Start()
+    {
+        currentCooldown = fireCoolDown;
+    }
+
+
+    void Update()
+    {
+        if(automatic)
+        {
+            if(Input.GetMouseButton(0))
+            {
+                if(currentCooldown <= 0f)
+                {
+                    //if not null (?)
+                    onGunShoot?.Invoke();
+                    currentCooldown = fireCoolDown;
+                }
+            }
+        }
+        else 
+        {
+            if(Input.GetMouseButtonDown(0))
+            {
+                if(currentCooldown <= 0f)
+                {
+                    //if not null (?)
+                    onGunShoot?.Invoke();
+                    currentCooldown = fireCoolDown;
+                }
+            }
+        }
+
+        currentCooldown -= Time.deltaTime;
+    }
+}