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App/tool/LuaDragger.h

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+/* Copyright 2003-2005 ROBLOX Corporation, All Rights Reserved */
+
+#pragma once
+
+#include "V8Tree/Instance.h"
+
+namespace RBX {
+
+	class Joint;
+	class PartInstance;
+	class ContactManager;
+	class RunDragger;
+
+	extern const char* const sLuaDragger;
+
+	class LuaDragger
+		: public DescribedCreatable<LuaDragger, Instance, sLuaDragger>
+	{
+	private:
+		typedef enum {NO_PARTS, MOUSE_DOWN, DRAGGING, MOUSE_UP_DRAGGED, MOUSE_UP_NO_DRAG} DragPhase;
+		DragPhase dragPhase;
+
+		std::vector<shared_ptr<Joint> > jointsIMade;
+		weak_ptr<PartInstance> rootPart;
+		std::auto_ptr<RunDragger> runDragger;		// only if we have one part
+
+		float hitPointHeight;
+
+		typedef std::vector<weak_ptr<PartInstance> >	WeakParts;
+		WeakParts dragParts;
+		weak_ptr<PartInstance> mousePart;
+		Vector3	pointOnMousePart;
+
+		void tryStartDragging(const RbxRay& unitMouseRay);
+		void startDragging();
+		void doDrag(const RbxRay& unitMouseRay);
+		bool getSnapHitPoint(PartInstance* part, const RbxRay& unitMouseRay, Vector3& hitPoint);
+		ContactManager& getContactManager(PartInstance* partInstance);
+
+		const float breakFreeDistance() {return 1.5f;}		// distance in studs at the mouse down point before movement
+
+		void addPart(shared_ptr<const Instance> part);
+		/*override*/ bool askSetParent(const Instance* instance) const { return false; }
+
+	public:
+		LuaDragger();
+		~LuaDragger();
+
+		void mouseDownPublic(shared_ptr<Instance> _mousePart,
+							 Vector3 _pointOnMousePart,
+							 shared_ptr<const Instances> _dragParts);	
+
+		void mouseDown(	shared_ptr<PartInstance> _mousePart,
+						const Vector3& _pointOnMousePart,
+						const std::vector<weak_ptr<PartInstance> > _dragParts);	
+
+		void mouseMove(RbxRay mouseRay);		// inefficient, but easier to have just one version
+
+		void mouseUp();
+
+		const WeakParts& getParts() {return dragParts;}
+
+		void rotateOnSnapFace(Vector3::Axis, const Matrix3& rotMatrix);
+		void axisRotate(Vector3::Axis axis);
+
+		bool isDragging() const {return dragPhase == DRAGGING;}
+
+		bool didDrag() const {return dragPhase == MOUSE_UP_DRAGGED;}
+
+		void alignPartToGrid( void );
+	};
+
+} // namespace RBX