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App/v8world/Mechanism.h

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+/* Copyright 2003-2006 ROBLOX Corporation, All Rights Reserved */
+
+#pragma once
+
+#include "V8World/IPipelined.h"
+#include "Util/IndexedMesh.h"
+#include "boost/utility.hpp"
+#include "Assembly.h"
+
+namespace RBX {
+	class Primitive;
+
+	class Mechanism 
+		: public IPipelined
+		, public boost::noncopyable
+		, public IndexedMesh
+	{
+	private:
+		static bool assemblyHasMovingParent(const Assembly* a);
+
+	public:
+		Mechanism();
+
+		~Mechanism();
+
+		Primitive* getMechanismPrimitive();
+		const Primitive* getConstMechanismPrimitive() const;
+
+		Assembly* getRootAssembly();
+		const Assembly* getConstRootAssembly() const;
+
+		///////////////////////////////////////////////////////////////
+		// Primitive Stuff
+
+		static bool isMechanismRootPrimitive(const Primitive* p);
+
+		static Mechanism* getPrimitiveMechanism(Primitive* p);
+		static const Mechanism* getConstPrimitiveMechanism(const Primitive* p);
+
+		static Primitive* getRootMovingPrimitive(Primitive* p);
+		static const Primitive* getConstRootMovingPrimitive(const Primitive* p);
+
+		///////////////////////////////////////////////////////////////
+		//  Assembly stuff
+
+		static bool isMovingAssemblyRoot(const Assembly* a);
+
+		static bool isComplexMovingMechanism(const Assembly* a);		// i.e. - the assembly has children, connected by spring joints - complex networking issues
+
+		static Assembly* getMovingAssemblyRoot(Assembly* a);
+		static const Assembly* getConstMovingAssemblyRoot(const Assembly* a);
+
+    private:
+        template<class Func>
+        inline void visitPrimitivesImpl(Func func, Assembly* a) {
+            a->visitPrimitives(func);
+            for (int i = 0; i < a->numChildren(); ++i) {
+                Assembly* child = a->getTypedChild<Assembly>(i);
+                visitPrimitivesImpl(func, child);
+            }
+        }
+
+    public:
+        // Primitive Visiting Functions
+        template<class Func>
+        inline void visitPrimitives(Func func) {
+            Assembly *root = getRootAssembly();
+            RBXASSERT(root);
+            visitPrimitivesImpl(func, root);
+        }
+	};
+
+} // namespace