Merge pull request #139 from teamfisk/EditorCopyPaste

Editor copy paste

include/Engine/Core/EntityWrapper.h

@@ -29,6 +29,7 @@ struct EntityWrapper
     EntityWrapper Parent();
     EntityWrapper FirstChildByName(const std::string& name);
     EntityWrapper FirstParentWithComponent(const std::string& componentType);
+    EntityWrapper Clone(EntityWrapper parent = EntityWrapper::Invalid);
     bool IsChildOf(EntityWrapper potentialParent);
     bool Valid() const;
 
@@ -39,6 +40,7 @@ struct EntityWrapper
 
 private:
     EntityWrapper firstChildByNameRecursive(const std::string& name, EntityID parent);
+    EntityWrapper cloneRecursive(EntityWrapper entity, EntityWrapper parent);
 };
 
 namespace std

include/Engine/Core/World.h

@@ -40,7 +40,7 @@ public:
     // Change the parent of an entity
     void SetParent(EntityID entity, EntityID parent);
     // Get children of an entity
-    const std::pair<std::unordered_multimap<EntityID, EntityID>::const_iterator, std::unordered_multimap<EntityID, EntityID>::const_iterator> GetChildren(EntityID entity);
+    const std::pair<std::unordered_multimap<EntityID, EntityID>::const_iterator, std::unordered_multimap<EntityID, EntityID>::const_iterator> GetDirectChildren(EntityID entity);
     // Get all component pools
     const std::unordered_map<std::string, ComponentPool*>& GetComponentPools() const { return m_ComponentPools; }
     // Get the entity children map

include/Engine/Editor/EditorGUI.h

@@ -73,6 +73,12 @@ public:
     // Called when the user means to rename an entity.
     typedef std::function<void(EntityWrapper, const std::string&)> OnEntityChangeName_t;
     void SetEntityChangeNameCallback(OnEntityChangeName_t f) { m_OnEntityChangeName = f; }
+    // Called when the user pastes an entity previously "copied"
+    // @param EntityWrapper The entity to copy
+    // @param EntityWrapper The entity to parent the new copy to
+    // @return The new copy of the entity
+    typedef std::function<EntityWrapper(EntityWrapper, EntityWrapper)> OnEntityPaste_t;
+    void SetEntityPasteCallback(OnEntityPaste_t f) { m_OnEntityPaste = f; }
     // Called when the user means to attach a new component to an entity.
     typedef std::function<void(EntityWrapper, const std::string&)> OnComponentAttach_t;
     void SetComponentAttachCallback(OnComponentAttach_t f) { m_OnComponentAttach = f; }
@@ -111,6 +117,7 @@ private:
     std::string m_DroppedFile = "";
     bool m_Paused = false;
     bool m_MouseLocked = false;
+    EntityWrapper m_CopyTarget = EntityWrapper::Invalid;
 
     // Callbacks
     OnEntitySelectedCallback_t m_OnEntitySelected = nullptr;
@@ -124,6 +131,7 @@ private:
     OnComponentDelete_t m_OnComponentDelete = nullptr;
     OnWidgetMode_t m_OnWidgetMode = nullptr;
     OnWidgetSpace_t m_OnWidgetSpace = nullptr;
+    OnEntityPaste_t m_OnEntityPaste = nullptr;
 
     // Events
     EventRelay<EditorGUI, Events::KeyDown> m_EKeyDown;

include/Engine/Editor/EditorSystem.h

@@ -56,6 +56,7 @@ private:
     void OnEntityDelete(EntityWrapper entity);
     void OnEntityChangeParent(EntityWrapper entity, EntityWrapper parent);
     void OnEntityChangeName(EntityWrapper entity, const std::string& name);
+    EntityWrapper OnEntityPaste(EntityWrapper entityToCopy, EntityWrapper parent);
     void OnComponentAttach(EntityWrapper entity, const std::string& componentType);
     void OnComponentDelete(EntityWrapper entity, const std::string& componentType);
     void OnWidgetSpace(EditorGUI::WidgetSpace widgetSpace);