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Assets/InputSystem_Actions.inputactions

@@ -1,4 +1,5 @@
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+    "version": 1,
     "name": "InputSystem_Actions",
     "maps": [
         {
@@ -85,6 +86,15 @@
                     "processors": "",
                     "interactions": "",
                     "initialStateCheck": false
+                },
+                {
+                    "name": "Mouse",
+                    "type": "Value",
+                    "id": "24341b02-824d-4fad-9ca4-b13eb0e8d4e7",
+                    "expectedControlType": "Vector2",
+                    "processors": "",
+                    "interactions": "",
+                    "initialStateCheck": true
                 }
             ],
             "bindings": [
@@ -472,6 +482,17 @@
                     "action": "Crouch",
                     "isComposite": false,
                     "isPartOfComposite": false
+                },
+                {
+                    "name": "",
+                    "id": "37f6f208-f780-4e98-829e-c0037bea0fe7",
+                    "path": "<Mouse>/position",
+                    "interactions": "",
+                    "processors": "",
+                    "groups": ";Keyboard&Mouse",
+                    "action": "Mouse",
+                    "isComposite": false,
+                    "isPartOfComposite": false
                 }
             ]
         },

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Assets/Scenes/SampleScene.unity

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Assets/Scripts/BulletMovement.cs

@@ -4,20 +4,23 @@ using UnityEngine;
 public class BulletMovement : MonoBehaviour
 {
     public float moveSpeed = 10;
+    public float lifeTime = 2;
+    private float _currentTime = 0;
 
-    // Start is called once before the first execution of Update after the MonoBehaviour is created
+    private void OnEnable()
-    void Start()
     {
-        
+        _currentTime = lifeTime;
     }
 
     // Update is called once per frame
     void Update()
     {
         transform.Translate(Vector2.up * (Time.deltaTime * moveSpeed));
+        _currentTime -= Time.deltaTime;
+        if (_currentTime <= 0)
+        {
+            gameObject.SetActive(false);
+        }
     }
 
-    private void OnTriggerEnter2D(Collider2D other)
-    {
-    }
 }

Assets/Scripts/InputManager.cs

@@ -0,0 +1,31 @@
+using UnityEngine;
+
+public class InputManager : MonoBehaviour
+{
+    // 1. 진짜 데이터가 담길 숨겨진 변수
+    private static InputSystem _inputSystem;
+
+    // 2. 외부에서 접근할 프로퍼티
+    public static InputSystem InputSystem
+    {
+        get
+        {
+            // 누군가 InputSystem을 찾았는데 없을 때만 새로 생성
+            _inputSystem ??= new InputSystem();
+            return _inputSystem;
+        }
+    }
+    
+    // Start에서는 더 이상 new를 할 필요가 없습니다! 
+    // (위의 get에서 자동으로 해주니까요)
+    private void OnEnable()
+    {
+        // 이때 객체가 없으면 자동으로 생성(get 호출)된 후 Enable()이 실행됩니다.
+        InputSystem.Enable(); 
+    }
+
+    private void OnDisable()
+    {
+        InputSystem.Disable();
+    }
+}

Assets/Scripts/InputManager.cs.meta

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Assets/Scripts/LivingEntity.cs

@@ -0,0 +1,23 @@
+using System;
+using UnityEngine;
+
+public class LivingEntity : MonoBehaviour
+{
+    public float health;
+    public void Damage(float amount)
+    {
+        health -= amount;
+        if (health <= 0)
+        {
+            Destroy(gameObject);
+        }
+    }
+    private void OnTriggerEnter2D(Collider2D other)
+    {
+        if (other.gameObject.layer == LayerMask.NameToLayer("Bullet"))
+        {
+            Destroy(gameObject);
+            other.gameObject.SetActive(false);
+        }
+    }
+}

Assets/Scripts/LivingEntity.cs.meta

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Assets/Scripts/Player.cs

@@ -0,0 +1,103 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.InputSystem;
+
+public class Player : MonoBehaviour
+{
+    private Camera _camera;
+    private Queue<GameObject> _bulletPool = new Queue<GameObject>();
+    
+    public GameObject bulletPrefab;
+    public int bulletCount = 30;
+
+    [Header("연사 설정")]
+    public float fireRate = 0.1f; // 총알 발사 간격 (0.1초마다 1발)
+    private float _fireTimer;     // 발사 타이머
+    private bool _isShooting;     // 발사 버튼을 누르고 있는지 여부
+
+    void Start()
+    {
+        _camera = Camera.main;
+        
+        // 처음 클릭 시 즉시 발사되도록 타이머 초기화
+        _fireTimer = fireRate;
+
+        // 기존의 performed 대신 클릭 시작(started)과 종료(canceled) 이벤트를 연결합니다.
+        InputManager.InputSystem.UI.Click.started += OnShootStarted;
+        InputManager.InputSystem.UI.Click.canceled += OnShootCanceled;
+
+        for (int i = 0; i < bulletCount; i++)
+        {
+            var bullet = Instantiate(bulletPrefab);
+            _bulletPool.Enqueue(bullet);
+            bullet.SetActive(false);
+        }
+    }
+
+    // 마우스를 클릭하기 시작했을 때
+    private void OnShootStarted(InputAction.CallbackContext obj)
+    {
+        _isShooting = true;
+    }
+
+    // 마우스 클릭을 뗐을 때
+    private void OnShootCanceled(InputAction.CallbackContext obj)
+    {
+        _isShooting = false;
+    }
+
+    // InputAction.CallbackContext 매개변수를 제거하여 Update문에서 호출 가능하게 변경
+    private void Shoot()
+    {
+        var peek = _bulletPool.Dequeue();
+        if (peek.activeInHierarchy)
+        {
+            _bulletPool.Enqueue(peek);
+            peek = Instantiate(bulletPrefab, transform);
+        }
+        peek.transform.rotation = transform.rotation;
+        peek.transform.position = transform.position;
+        peek.SetActive(true);
+        _bulletPool.Enqueue(peek);
+    }
+
+    void Update()
+    {
+        if (_camera is null)
+        {
+            return;
+        }
+        if (InputManager.InputSystem is null)
+        {
+            return;
+        }
+
+        // 1. 캐릭터 회전 처리
+        var mousePos = InputManager.InputSystem.Player.Mouse.ReadValue<Vector2>();
+        var screenToWorldPoint = _camera.ScreenToWorldPoint(mousePos);
+        screenToWorldPoint.z = 0;
+
+        Vector2 direction = screenToWorldPoint - transform.position;
+        var rad2Deg = Mathf.Atan2(direction.y, direction.x) * Mathf.Rad2Deg;
+        transform.rotation = Quaternion.Euler(0, 0, rad2Deg - 90);
+
+        // 2. 연사 처리 로직
+        _fireTimer += Time.deltaTime; // 타이머는 매 프레임 증가
+        
+        if (_isShooting && _fireTimer >= fireRate)
+        {
+            Shoot();
+            _fireTimer = 0f; // 발사 후 타이머 초기화
+        }
+    }
+
+    // 에러나 메모리 누수 방지를 위해 스크립트 파괴 시 이벤트 구독 해제
+    private void OnDestroy()
+    {
+        if (InputManager.InputSystem != null)
+        {
+            InputManager.InputSystem.UI.Click.started -= OnShootStarted;
+            InputManager.InputSystem.UI.Click.canceled -= OnShootCanceled;
+        }
+    }
+}

Assets/Scripts/Player.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 888d5e9b7a6b20447979a287da28b419