chunk 1: core gameplay scripts scenes runtime assets

Assets/Scripts/Utilities/CopyMultipleComponents.cs

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+/*
+    A simple little editor extension to copy and paste all components
+    Help from http://answers.unity3d.com/questions/541045/copy-all-components-from-one-character-to-another.html
+    license: WTFPL (http://www.wtfpl.net/)
+    author: aeroson
+    advise: ChessMax
+    editor: frekons
+*/
+
+#if UNITY_EDITOR
+using UnityEngine;
+using UnityEditor;
+using System.Collections.Generic;
+
+public class CopyMultipleComponents : EditorWindow
+{
+    // Use ScriptableObject to store data between editor sessions
+    private class ComponentDataContainer : ScriptableObject
+    {
+        public List<string> componentData = new List<string>();
+        public List<string> componentTypeNames = new List<string>();
+    }
+
+    private static ComponentDataContainer dataContainer;
+
+    [MenuItem("Tools/Component Utilities/Copy All Components")]
+    static void Copy()
+    {
+        if (Selection.activeGameObject == null)
+        {
+            Debug.LogError("No GameObject selected for copying!");
+            return;
+        }
+
+        // Create or get the data container
+        if (dataContainer == null)
+            dataContainer = ScriptableObject.CreateInstance<ComponentDataContainer>();
+
+        dataContainer.componentData.Clear();
+        dataContainer.componentTypeNames.Clear();
+
+        Component[] components = Selection.activeGameObject.GetComponents<Component>();
+        
+        foreach (Component component in components)
+        {
+            if (component == null)
+                continue;
+                
+            // Skip Transform component as it often causes issues
+            if (component is Transform)
+                continue;
+                
+            // Store component data as JSON
+            string json = EditorJsonUtility.ToJson(component);
+            dataContainer.componentData.Add(json);
+            dataContainer.componentTypeNames.Add(component.GetType().AssemblyQualifiedName);
+        }
+        
+        if (dataContainer.componentData.Count > 0)
+        {
+            Debug.Log($"Copied {dataContainer.componentData.Count} components from {Selection.activeGameObject.name}");
+        }
+        else
+        {
+            Debug.LogWarning("No components found to copy!");
+        }
+    }
+
+    [MenuItem("Tools/Component Utilities/Paste All Components")]
+    static void Paste()
+    {
+        if (dataContainer == null || dataContainer.componentData.Count == 0)
+        {
+            Debug.LogError("Nothing is copied! Use 'Copy All Components' first.");
+            return;
+        }
+
+        foreach (GameObject targetGameObject in Selection.gameObjects)
+        {
+            if (!targetGameObject)
+                continue;
+
+            Undo.RegisterCompleteObjectUndo(targetGameObject, targetGameObject.name + ": Paste All Components");
+
+            int successCount = 0;
+            int failCount = 0;
+
+            for (int i = 0; i < dataContainer.componentTypeNames.Count; i++)
+            {
+                string typeString = dataContainer.componentTypeNames[i];
+                string jsonData = dataContainer.componentData[i];
+                
+                System.Type componentType = System.Type.GetType(typeString);
+                if (componentType == null)
+                {
+                    Debug.LogError($"Could not find type: {typeString}");
+                    failCount++;
+                    continue;
+                }
+
+                // Check if component already exists
+                Component targetComponent = targetGameObject.GetComponent(componentType);
+                
+                if (targetComponent == null)
+                {
+                    // Add component if it doesn't exist
+                    targetComponent = Undo.AddComponent(targetGameObject, componentType);
+                }
+                
+                if (targetComponent != null)
+                {
+                    // Apply the JSON data to the component
+                    EditorJsonUtility.FromJsonOverwrite(jsonData, targetComponent);
+                    successCount++;
+                }
+                else
+                {
+                    Debug.LogError($"Failed to add component: {componentType}");
+                    failCount++;
+                }
+            }
+
+            Debug.Log($"Pasted to {targetGameObject.name}: {successCount} components successful, {failCount} failed");
+        }
+    }
+
+    [MenuItem("Tools/Component Utilities/Delete All Components")]
+    static void DeleteAllComponents()
+    {
+        if (Selection.gameObjects.Length == 0)
+        {
+            Debug.LogError("No GameObjects selected for component deletion!");
+            return;
+        }
+
+        foreach (GameObject targetGameObject in Selection.gameObjects)
+        {
+            if (!targetGameObject)
+                continue;
+
+            Undo.RegisterCompleteObjectUndo(targetGameObject, targetGameObject.name + ": Delete All Components");
+
+            Component[] components = targetGameObject.GetComponents<Component>();
+            int deletedCount = 0;
+
+            // Start from the end to avoid index issues when destroying components
+            for (int i = components.Length - 1; i >= 0; i--)
+            {
+                Component component = components[i];
+                
+                // Skip null components
+                if (component == null)
+                    continue;
+                    
+                // Skip Transform component as it's required
+                if (component is Transform)
+                    continue;
+                
+                // Destroy the component with Undo support
+                Undo.DestroyObjectImmediate(component);
+                deletedCount++;
+            }
+            
+            Debug.Log($"Deleted {deletedCount} components from {targetGameObject.name}");
+        }
+    }
+
+    // Add menu items without keyboard shortcuts
+    [MenuItem("GameObject/Component Utilities/Copy All Components")]
+    static void CopyFromGameObjectMenu()
+    {
+        Copy();
+    }
+
+    [MenuItem("GameObject/Component Utilities/Paste All Components")]
+    static void PasteFromGameObjectMenu()
+    {
+        Paste();
+    }
+
+    [MenuItem("GameObject/Component Utilities/Delete All Components")]
+    static void DeleteAllComponentsFromGameObjectMenu()
+    {
+        DeleteAllComponents();
+    }
+}
+#endif