added in-game logger

Packages/com.jovian.ingame-logging/Runtime/UI/GameLogView.cs

@@ -0,0 +1,116 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+
+namespace Jovian.InGameLogging.UI {
+    public class GameLogView : MonoBehaviour {
+        [SerializeField] ScrollRect scrollRect;
+        [SerializeField] RectTransform content;
+        [SerializeField] LogEntryView entryPrefab;
+        [SerializeField] int poolSize = 20;
+
+        IGameLogStore store;
+        LogChannel? channelFilter;
+        bool autoScroll = true;
+
+        readonly List<LogEntryView> activeEntries = new();
+        readonly Stack<LogEntryView> pool = new();
+
+        public void Initialize(IGameLogStore store, LogChannel? channelFilter = null) {
+            this.store = store;
+            this.channelFilter = channelFilter;
+
+            WarmPool();
+            store.OnEntryAdded += HandleEntryAdded;
+            store.OnCleared += HandleCleared;
+            scrollRect.onValueChanged.AddListener(HandleScrollChanged);
+
+            RebuildFromStore();
+        }
+
+        void OnDestroy() {
+            if(store != null) {
+                store.OnEntryAdded -= HandleEntryAdded;
+                store.OnCleared -= HandleCleared;
+            }
+            if(scrollRect != null) {
+                scrollRect.onValueChanged.RemoveListener(HandleScrollChanged);
+            }
+        }
+
+        void WarmPool() {
+            for(int i = 0; i < poolSize; i++) {
+                var entry = Instantiate(entryPrefab, content);
+                entry.gameObject.SetActive(false);
+                pool.Push(entry);
+            }
+        }
+
+        LogEntryView GetFromPool() {
+            LogEntryView entry;
+            if(pool.Count > 0) {
+                entry = pool.Pop();
+            }
+            else {
+                entry = activeEntries[0];
+                activeEntries.RemoveAt(0);
+            }
+            entry.gameObject.SetActive(true);
+            entry.transform.SetAsLastSibling();
+            return entry;
+        }
+
+        void ReturnToPool(LogEntryView entry) {
+            entry.ClearEntry();
+            entry.gameObject.SetActive(false);
+            pool.Push(entry);
+        }
+
+        void HandleEntryAdded(LogEntry entry) {
+            if(channelFilter.HasValue && entry.channel != channelFilter.Value) {
+                return;
+            }
+
+            var view = GetFromPool();
+            view.SetEntry(in entry);
+            activeEntries.Add(view);
+
+            if(autoScroll) {
+                Canvas.ForceUpdateCanvases();
+                scrollRect.verticalNormalizedPosition = 0f;
+            }
+        }
+
+        void HandleCleared() {
+            for(int i = activeEntries.Count - 1; i >= 0; i--) {
+                ReturnToPool(activeEntries[i]);
+            }
+            activeEntries.Clear();
+
+            if(store.Count > 0) {
+                RebuildFromStore();
+            }
+        }
+
+        void RebuildFromStore() {
+            var entries = store.GetEntries();
+            for(int i = 0; i < entries.Length; i++) {
+                if(channelFilter.HasValue && entries[i].channel != channelFilter.Value) {
+                    continue;
+                }
+                var view = GetFromPool();
+                view.SetEntry(in entries[i]);
+                activeEntries.Add(view);
+            }
+
+            if(autoScroll) {
+                Canvas.ForceUpdateCanvases();
+                scrollRect.verticalNormalizedPosition = 0f;
+            }
+        }
+
+        void HandleScrollChanged(Vector2 position) {
+            autoScroll = position.y <= 0.01f;
+        }
+    }
+}

Packages/com.jovian.ingame-logging/Runtime/UI/GameLogView.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 786fb23f28122964cb30678ea785bd40

Packages/com.jovian.ingame-logging/Runtime/UI/LogEntryView.cs

@@ -0,0 +1,16 @@
+using TMPro;
+using UnityEngine;
+
+namespace Jovian.InGameLogging.UI {
+    public class LogEntryView : MonoBehaviour {
+        [SerializeField] TMP_Text messageText;
+
+        public void SetEntry(in LogEntry entry) {
+            messageText.text = entry.message;
+        }
+
+        public void ClearEntry() {
+            messageText.text = string.Empty;
+        }
+    }
+}

Packages/com.jovian.ingame-logging/Runtime/UI/LogEntryView.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 5526887cdf77a54439357be8b5754ffc