Update Project

Assets/Scripts/Gameplay/Bird/BirdCollisionView.cs

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+using UnityEngine;
+using Zenject;
+using FlappyBird.Core;
+
+namespace FlappyBird.Gameplay.Bird
+{
+    /// <summary>
+    /// Thin MonoBehaviour on the bird GameObject.
+    /// Responsibilities:
+    ///   - Detect solid pipe collisions (OnCollisionEnter2D)
+    ///   - Detect trigger-based pipe collisions (OnTriggerEnter2D, tag "Obstacle")
+    ///   - Check vertical screen bounds every frame
+    /// On any death condition: calls IDeathHandler then notifies GameManagerView.
+    /// NO death logic lives here.
+    /// </summary>
+    [RequireComponent(typeof(Collider2D))]
+    public sealed class BirdCollisionView : MonoBehaviour
+    {
+        private GameManagerView   _gameManagerView;
+        private BirdSettings      _birdSettings;
+        private IGameStateManager _gameStateManager;
+        private IDeathHandler     _deathHandler;
+
+        [Inject]
+        private void Construct(
+            GameManagerView   gameManagerView,
+            BirdSettings      birdSettings,
+            IGameStateManager gameStateManager,
+            IDeathHandler     deathHandler)
+        {
+            _gameManagerView  = gameManagerView;
+            _birdSettings     = birdSettings;
+            _gameStateManager = gameStateManager;
+            _deathHandler     = deathHandler;
+        }
+
+        // ── Unity lifecycle ────────────────────────────────────────────────
+
+        private void Update()
+        {
+            // Bounds check only runs while playing — prevents re-triggering death.
+            if (_gameStateManager.CurrentState != GameState.Playing) return;
+            CheckBounds();
+        }
+
+        private void OnCollisionEnter2D(Collision2D other)
+        {
+            Die();
+        }
+
+        private void OnTriggerEnter2D(Collider2D other)
+        {
+            // Ignore the score trigger that sits in the gap centre.
+            if (other.CompareTag("Bird")) return;
+
+            if (other.CompareTag("Obstacle"))
+                Die();
+        }
+
+        // ── Private helpers ────────────────────────────────────────────────
+
+        /// <summary>
+        /// Position-based ceiling/floor check.
+        /// No boundary collider objects are required in the scene.
+        /// </summary>
+        private void CheckBounds()
+        {
+            float y = transform.position.y;
+            if (y > _birdSettings.MaxY || y < _birdSettings.MinY)
+                Die();
+        }
+
+        /// <summary>
+        /// Single death entry-point — applies side-effects then triggers GameOver.
+        /// Guard inside NotifyBirdDied prevents double-firing.
+        /// </summary>
+        private void Die()
+        {
+            _deathHandler.HandleDeath();
+            _gameManagerView.NotifyBirdDied();
+        }
+    }
+}