character-system/Runtime/CombatSystem/Firearm.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using QFSW.MOP2;
using Sirenix.OdinInspector;
using KairoEngine.Core;
using KairoEngine.Inventory;
using KairoEngine.SFX;

namespace KairoEngine.CharacterSystem
{
    public class Firearm : MonoBehaviour
    {
        [ShowInInspector]
        public ItemFirearmRef itemFirearmRef;
        public Transform barrel;
        public Transform aim;
        public Transform grip;

        public float camShakeTime = 0.2f;
        public float camShakeIntensity = 0.3f;
        
        private Transform direction;

        [HideInInspector]
        public CharacterController character;

        [ReadOnly] public bool isAutomatic = false;
        [ReadOnly] public float firingSpeed = 1f;
        [ReadOnly] public float soundIntensity = 10f;
        [ReadOnly] public GameObject bulletPrefab;
        [ReadOnly] public bool isReady = true;

        private float counter = 0f;
        private ItemBaseFirearm weapon ;

        private int burstCurrentBullet = 0;
        private string bulletPrefabPool;
        private bool playerCharacter = false;

        private void Start()
        {
            character = gameObject.GetComponentInParent<CharacterController>();
            if(itemFirearmRef == null) return;
            ItemBase item = itemFirearmRef.item;
            weapon = (ItemBaseFirearm)item;
            if(weapon != null)
            {
                isAutomatic = weapon.isAutomatic;
                firingSpeed = weapon.firingSpeed;
                bulletPrefab = weapon.ammoType.bulletPrefab;
                bulletPrefabPool = weapon.ammoType.bulletPrefabPool;

            }
            CharacterAnimator characterAnimator = gameObject.GetComponentInParent<CharacterAnimator>();
            if(characterAnimator!= null) direction = characterAnimator.transform;
            if(character.unique_name == "player-character_") playerCharacter = true;
            else playerCharacter = false;
        }

        private void Update()
        {
            if(character == null || transform.parent == null) return;
            CoolDown();
            Burst();
        }

        private void CoolDown()
        {
            if (!isReady)
            {
                counter += Time.deltaTime;
                if (counter >= firingSpeed)
                {
                    isReady = true;
                    counter = 0f;
                }
            }
        }

        public void Fire()
        {
            if (isReady)
            {
                isReady = false;
                burstCurrentBullet += 1;
                if(itemFirearmRef.ammo < 1) 
                {
                    // No ammo
                    SoundController.EmmitSound(weapon.emptySound, transform.position);
                }
                else
                {
                    // Remove bullet from magazine
                    itemFirearmRef.ammo -= 1;
                    // Instantiate Bullets
                    for (int i = 0; i < weapon.bulletsPerShot; i++)
                    {
                        GameObject obj = null;
                        if(bulletPrefabPool != "") obj = MasterObjectPooler.Instance.GetPool(bulletPrefabPool).GetObject();
                        else obj = Instantiate(bulletPrefab);        
                        Bullet bullet = obj.GetComponent<Bullet>();
                        bullet.Initialize(barrel, itemFirearmRef, character, bulletPrefabPool);
                    }
                    // Create sound
                    SoundController.EmmitSound(weapon.shootSound, transform.position);
                    // Shake Camera
                    if(playerCharacter) GenericEvents.Trigger("CameraShake", camShakeIntensity, camShakeTime);
                }
            }
        }

        private void Burst()
        {
            if(burstCurrentBullet == weapon.burstFire)
            {
                // Burst end
                burstCurrentBullet = 0;
            }
            if(weapon.burstFire > 1)
            {
                if(burstCurrentBullet > 0)
                {
                    Fire();
                }
            }
        }
    }

}