further cleanup of repo

.Experimental/CVRLuaToolsExtension/LuaToolsExtension/LuaHotReloadManager.cs

@@ -0,0 +1,147 @@
+using System.Text;
+using ABI_RC.Core.InteractionSystem;
+using ABI_RC.Core.UI;
+using ABI.CCK.Components;
+using ABI.CCK.Components.ScriptableObjects;
+using UnityEngine;
+
+namespace NAK.CVRLuaToolsExtension;
+
+public static class LuaHotReloadManager
+{
+    // (asset id + lua component id) -> index is component reference
+    private static readonly List<int> s_CombinedKeys = new();
+    private static readonly List<CVRLuaClientBehaviour> s_LuaComponentInstances = new();
+
+    #region Game Events
+
+    public static void OnCVRLuaBaseBehaviourLoadAndRunScript(CVRLuaClientBehaviour clientBehaviour)
+    {
+        if (!clientBehaviour.IsScriptEligibleForHotReload())
+            return;
+
+        // check if the component is already in the list (shouldn't happen)
+        if (s_LuaComponentInstances.Contains(clientBehaviour))
+        {
+            CVRLuaToolsExtensionMod.Logger.Warning($"[LuaHotReloadManager] Script already added: {clientBehaviour.name}");
+            return;
+        }
+        
+        // combine the assetId and instanceId into a single key, so multiple instances of the same script can be tracked
+        string assetId = clientBehaviour.GetAssetIdFromScript();
+        int instanceId = GetGameObjectPathHashCode(clientBehaviour.transform);
+        int combinedKey = GenerateCombinedKey(assetId.GetHashCode(), instanceId);
+
+        s_CombinedKeys.Add(combinedKey);
+        s_LuaComponentInstances.Add(clientBehaviour);
+
+        CVRLuaToolsExtensionMod.Logger.Msg($"[LuaHotReloadManager] Added script: {clientBehaviour.name}");
+    }
+
+    public static void OnCVRLuaBaseBehaviourDestroy(CVRLuaClientBehaviour clientBehaviour)
+    {
+        if (!clientBehaviour.IsScriptEligibleForHotReload())
+            return;
+
+        if (!s_LuaComponentInstances.Contains(clientBehaviour))
+        {
+            CVRLuaToolsExtensionMod.Logger.Warning($"[LuaHotReloadManager] Eligible for Hot Reload script destroyed without being tracked first: {clientBehaviour.name}");
+            return;
+        }
+        
+        int index = s_LuaComponentInstances.IndexOf(clientBehaviour);
+        s_CombinedKeys.RemoveAt(index);
+        s_LuaComponentInstances.RemoveAt(index);
+
+        CVRLuaToolsExtensionMod.Logger.Msg($"[LuaHotReloadManager] Removed script: {clientBehaviour.name}");
+    }
+
+    public static void OnReceiveUpdatedScript(ScriptInfo info)
+    {
+        int combinedKey = GenerateCombinedKey(info.AssetId.GetHashCode(), info.LuaComponentId);
+
+        bool found = false;
+        for (int i = 0; i < s_CombinedKeys.Count; i++)
+        {
+            if (combinedKey != s_CombinedKeys[i])
+                continue;
+
+            CVRLuaClientBehaviour clientBehaviour = s_LuaComponentInstances[i];
+
+            if (clientBehaviour.asset.m_ScriptPath == info.ScriptPath)
+            {
+                CVRLuaToolsExtensionMod.Logger.Msg("[LuaHotReloadManager] Script path match, updating script.");
+                clientBehaviour.asset.name = info.ScriptName;
+                clientBehaviour.asset.m_ScriptText = info.ScriptText;
+                clientBehaviour.Restart();
+                found = true;
+            }
+            else
+            {
+                CVRLuaToolsExtensionMod.Logger.Msg("[LuaHotReloadManager] Script path mismatch, creating new script.");
+
+                clientBehaviour.asset = null;
+                clientBehaviour.asset = ScriptableObject.CreateInstance<CVRLuaScript>();
+
+                clientBehaviour.asset.name = info.ScriptName;
+                clientBehaviour.asset.m_ScriptPath = info.ScriptPath;
+                clientBehaviour.asset.m_ScriptText = info.ScriptText;
+
+                clientBehaviour.Restart();
+                found = true;
+            }
+        }
+
+        if (found)
+        {
+            CohtmlHud.Instance.ViewDropTextImmediate("(Local) CVRLuaTools", "Received script update", "Reloaded script: " + info.ScriptName);
+        }
+    }
+
+    #endregion Game Events
+
+    #region Private Methods
+    
+    private static int GenerateCombinedKey(int assetId, int instanceId)
+    {
+        return (assetId << 16) | instanceId; // yes
+    }
+    
+    private static int GetGameObjectPathHashCode(Transform transform)
+    {
+        // both CVRAvatar & CVRSpawnable *should* have an asset info component
+        Transform rootComponentTransform = null;
+        CVRAssetInfo rootComponent = transform.GetComponentInParent<CVRAssetInfo>(true);
+        if (rootComponent != null && rootComponent.type != CVRAssetInfo.AssetType.World) // ignore if under world instance
+            rootComponentTransform = rootComponent.transform;
+        
+        // easy case, no need to crawl up the hierarchy
+        if (rootComponentTransform == transform)
+            return 581452743; // hash code for "[Root]"
+
+        StringBuilder pathBuilder = new(transform.name);
+        Transform parentTransform = transform.parent;
+        
+        while (parentTransform != null)
+        {
+            // reached root component
+            // due to object loader renaming root, we can't rely on transform name, so we use "[Root]" instead
+            if (parentTransform == rootComponentTransform)
+            {
+                pathBuilder.Insert(0, "[Root]/");
+                break;
+            }
+
+            pathBuilder.Insert(0, parentTransform.name + "/");
+            parentTransform = parentTransform.parent;
+        }
+
+        string path = pathBuilder.ToString();
+
+        //Debug.Log($"[LuaComponentManager] Path: {path}");
+
+        return path.GetHashCode();
+    }
+    
+    #endregion Private Methods
+}