Update Project

Assets/Scripts/Gameplay/Pipes/PipeView.cs

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+using UnityEngine;
+using Zenject;
+
+namespace FlappyBird.Gameplay.Pipes
+{
+    /// <summary>
+    /// Thin MonoBehaviour that lives on the pipe-pair prefab.
+    /// Responsibilities:
+    ///   - Expose top/bottom pipe transforms for positioning by the spawner
+    ///   - Scroll leftward every frame
+    ///   - Return itself to the pool when off-screen
+    /// NO spawn logic lives here.
+    /// </summary>
+    public sealed class PipeView : MonoBehaviour, Core.IPoolable
+    {
+        [Tooltip("Transform of the top pipe (flipped, hanging from above).")]
+        [SerializeField] private Transform topPipe;
+        [Tooltip("Transform of the bottom pipe (standing upright).")]
+        [SerializeField] private Transform bottomPipe;
+        [Tooltip("Score trigger collider child sitting in the centre of the gap.")]
+        [SerializeField] private ScoreTriggerView scoreTrigger;
+
+        // ── Public accessors used by PipeSpawner ───────────────────────────
+        public Transform TopPipe          => topPipe;
+        public Transform BottomPipe       => bottomPipe;
+        public ScoreTriggerView ScoreTrigger => scoreTrigger;
+
+        // ── Injected ───────────────────────────────────────────────────────
+        private IPipePool     _pool;
+        private PipeSettings  _settings;
+        [Inject]
+        private void Construct(IPipePool pool, PipeSettings settings)
+        {
+            _pool     = pool;
+            _settings = settings;
+        }
+        // ── Unity lifecycle ────────────────────────────────────────────────
+        private void Update()
+        {
+            ScrollLeft();
+        }
+        // ── IPoolable ──────────────────────────────────────────────────────
+        /// <summary>Called by the pool just before this pair is handed to the spawner.</summary>
+        public void OnSpawn()
+        {
+            gameObject.SetActive(true);
+        }
+        /// <summary>Called by the pool when this pair is returned.</summary>
+        public void OnDespawn()
+        {
+            gameObject.SetActive(false);
+        }
+        // ── Private helpers ────────────────────────────────────────────────
+        /// <summary>Moves the pipe pair leftward and despawns when off-screen.</summary>
+        private void ScrollLeft()
+        {
+            transform.position += Vector3.left * (_settings.ScrollSpeed * Time.deltaTime);
+            if (transform.position.x <= _settings.DespawnX)
+                _pool.Return(this);
+        }
+
+        // ── Zenject factory ────────────────────────────────────────────────
+        /// <summary>
+        /// Zenject factory used by PipePool to instantiate pipe-pair prefabs
+        /// with full dependency injection applied.
+        /// </summary>
+        public sealed class Factory : PlaceholderFactory<PipeView> { }
+    }
+}