add: pistol weapon and enemy

Assets/Scripts/WeaponController.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+using UnityEngine;
+
+public class WeaponController : MonoBehaviour
+{
+    [SerializeField] Weapon[] weapons;
+    [SerializeField] int currentWeapon = 0;
+
+    void Start() {
+        weapons = GetComponentsInChildren<Weapon>();
+        for (int i = 0; i < weapons.Length; ++i) {
+            if (i != currentWeapon) weapons[i].SetWeaponState(false);
+        }
+    }
+
+    void Update() {
+        if (Input.GetMouseButton(0) && weapons[currentWeapon].isActive) weapons[currentWeapon].Shoot(Input.GetMouseButtonDown(0), Input.GetMouseButton(0));
+    }
+}