making a stab at updating Shapes

--HG--
branch : box2d-update

platform/macosx/love.xcodeproj/project.pbxproj

@@ -184,6 +184,7 @@
 		A986EC84132CE6DB00F048C8 /* b2PulleyJoint.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A986EC0D132CE6D800F048C8 /* b2PulleyJoint.cpp */; };
 		A986EC85132CE6DB00F048C8 /* b2RevoluteJoint.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A986EC0F132CE6D800F048C8 /* b2RevoluteJoint.cpp */; };
 		A986EC86132CE6DB00F048C8 /* b2WeldJoint.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A986EC11132CE6D800F048C8 /* b2WeldJoint.cpp */; };
+		A986ECAF132CEBB000F048C8 /* Fixture.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A986ECAD132CEB9300F048C8 /* Fixture.cpp */; };
 		A98D914410507C97008E03F2 /* EncodedImageData.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A98D914310507C97008E03F2 /* EncodedImageData.cpp */; };
 		A9B4BA9C1045937F001DBC80 /* ParticleSystem.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A9B4BA9A1045937F001DBC80 /* ParticleSystem.cpp */; };
 		A9B4BA9D1045937F001DBC80 /* wrap_ParticleSystem.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A9B4BA9B1045937F001DBC80 /* wrap_ParticleSystem.cpp */; };
@@ -598,6 +599,8 @@
 		A986EC11132CE6D800F048C8 /* b2WeldJoint.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = b2WeldJoint.cpp; sourceTree = "<group>"; };
 		A986EC12132CE6D800F048C8 /* b2WeldJoint.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = b2WeldJoint.h; sourceTree = "<group>"; };
 		A986ECAC132CE82F00F048C8 /* Box2D.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Box2D.h; sourceTree = "<group>"; };
+		A986ECAD132CEB9300F048C8 /* Fixture.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Fixture.cpp; sourceTree = "<group>"; };
+		A986ECAE132CEB9B00F048C8 /* Fixture.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Fixture.h; sourceTree = "<group>"; };
 		A98D913E10507BF9008E03F2 /* EncodedImageData.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = EncodedImageData.h; sourceTree = "<group>"; };
 		A98D914310507C97008E03F2 /* EncodedImageData.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = EncodedImageData.cpp; sourceTree = "<group>"; };
 		A9B1AE451197293000D496EB /* love_Prefix.pch */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = love_Prefix.pch; sourceTree = "<group>"; };
@@ -1144,6 +1147,8 @@
 				A93E6AF010420AC7007D418B /* Contact.h */,
 				A93E6AF110420AC7007D418B /* DistanceJoint.cpp */,
 				A93E6AF210420AC7007D418B /* DistanceJoint.h */,
+				A986ECAD132CEB9300F048C8 /* Fixture.cpp */,
+				A986ECAE132CEB9B00F048C8 /* Fixture.h */,
 				A93E6AF310420AC7007D418B /* GearJoint.cpp */,
 				A93E6AF410420AC7007D418B /* GearJoint.h */,
 				A93E6AF510420AC7007D418B /* graham */,
@@ -1672,6 +1677,7 @@
 				A986EC84132CE6DB00F048C8 /* b2PulleyJoint.cpp in Sources */,
 				A986EC85132CE6DB00F048C8 /* b2RevoluteJoint.cpp in Sources */,
 				A986EC86132CE6DB00F048C8 /* b2WeldJoint.cpp in Sources */,
+				A986ECAF132CEBB000F048C8 /* Fixture.cpp in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

src/modules/physics/box2d/CircleShape.cpp

@@ -30,41 +30,28 @@ namespace physics
 {
 namespace box2d
 {
-	CircleShape::CircleShape(Body * body, b2CircleDef * def)
-		: Shape(body)
+	CircleShape::CircleShape(b2CircleShape * c)
 	{
-		def->localPosition = body->world->scaleDown(def->localPosition);
-		def->radius = body->world->scaleDown(def->radius);
-		radius = def->radius;
-		this->localPosition = def->localPosition;
-
-		def->userData = (void*)data;
-		shape = body->body->CreateShape(def);
+		shape = c;
 	}
 
 	CircleShape::~CircleShape()
 	{
+        shape = NULL;
 	}
-
-	float CircleShape::getRadius() const
-	{
-		return body->world->scaleUp(radius);
-	}
-
-	void CircleShape::getLocalCenter(float & x, float & y) const
-	{
-		x = localPosition.x;
-		y = localPosition.y;
-		body->world->scaleUp(x, y);
-	}
-
-	void CircleShape::getWorldCenter(float & x, float & y) const
-	{
-		b2Vec2 worldCenter = body->body->GetWorldPoint(localPosition);
-		worldCenter = body->world->scaleUp(worldCenter);
-		x = worldCenter.x;
-		y = worldCenter.y;
-	}
+    
+    float CircleShape::getRadius() const
+    {
+        return shape->m_radius;
+    }
+    
+    /**
+     * Gets the radius for the circle.
+     **/
+    void CircleShape::setRadius(float r)
+    {
+        shape->m_radius = r;
+    }
 
 } // box2d
 } // physics

src/modules/physics/box2d/CircleShape.h

@@ -41,15 +41,6 @@ namespace box2d
 	**/
 	class CircleShape : public Shape
 	{
-	private:
-
-		// The radius of the circle. We need to store this because
-		// Box2D has no built-in method for getting the radius.
-		float radius;
-
-		// Local offset.
-		b2Vec2 localPosition;
-
 	public:
 		
 		/**
@@ -58,7 +49,7 @@ namespace box2d
 		* @param body The parent body.
 		* @param def The CircleShape definition.
 		**/
-		CircleShape(Body * body, b2CircleDef * def);
+		CircleShape(b2CircleShape * c);
 
 		virtual ~CircleShape();
 
@@ -66,11 +57,11 @@ namespace box2d
 		* Gets the radius for the circle.
 		**/
 		float getRadius() const;
-
-		// There is no support for setting the radius.
-
-		void getLocalCenter(float & x, float & y) const;
-		void getWorldCenter(float & x, float & y) const;
+		
+		/**
+		* Gets the radius for the circle.
+		**/
+		void setRadius(float r);
 	};
 
 } // box2d

src/modules/physics/box2d/Fixture.cpp

@@ -0,0 +1,9 @@
+//
+//  Fixture.cpp
+//  love
+//
+//  Created by Bill Meltsner on 3/13/11.
+//  Copyright 2011 Bill Meltsner. All rights reserved.
+//
+
+#include "Fixture.h"

src/modules/physics/box2d/Fixture.h

@@ -0,0 +1,197 @@
+/**
+* Copyright (c) 2006-2011 LOVE Development Team
+*
+* This software is provided 'as-is', without any express or implied
+* warranty.  In no event will the authors be held liable for any damages
+* arising from the use of this software.
+*
+* Permission is granted to anyone to use this software for any purpose,
+* including commercial applications, and to alter it and redistribute it
+* freely, subject to the following restrictions:
+*
+* 1. The origin of this software must not be misrepresented; you must not
+*    claim that you wrote the original software. If you use this software
+*    in a product, an acknowledgment in the product documentation would be
+*    appreciated but is not required.
+* 2. Altered source versions must be plainly marked as such, and must not be
+*    misrepresented as being the original software.
+* 3. This notice may not be removed or altered from any source distribution.
+**/
+
+#ifndef LOVE_PHYSICS_BOX2D_FIXTURE_H
+#define LOVE_PHYSICS_BOX2D_FIXTURE_H
+
+// LOVE
+#include <physics/Shape.h>
+#include <physics/box2d/Body.h>
+#include <physics/box2d/Shape.h>
+#include <common/Object.h>
+#include <common/Reference.h>
+
+// Box2D
+#include <Box2D/Box2D.h>
+
+namespace love
+{
+namespace physics
+{
+namespace box2d
+{
+	/**
+	* This struct is stored in a void pointer
+	* in the Box2D Fixture class. For now, all we
+	* need is a Lua reference to arbitrary data,
+	* but we might need more later.
+	**/
+	struct fixtureudata
+	{
+		// Reference to arbitrary data.
+		Reference * ref;
+	};
+
+	/**
+	* A Fixture is used to attach a shape to a body for collision detection.
+	* A Fixture inherits its transform from its parent. Fixtures hold
+	* additional non-geometric data such as friction, collision filters,
+	* etc.
+	**/
+	class Fixture : public Object
+	{
+	protected:
+		
+		b2Fixture * fixture;
+		fixtureudata * data;
+
+	public:
+
+		/**
+		* Creates a Fixture.
+		**/
+		Fixture(Body * body, Shape * shape);
+
+		virtual ~Fixture();
+
+		/**
+		* Gets the type of the Fixture's Shape. Useful for
+		* debug drawing.
+		**/
+		Shape::Type getType() const;
+
+		/**
+		* Sets the friction of the Fixture.
+		* @param friction The new friction.
+		**/
+		void setFriction(float friction);
+
+		/**
+		* Sets the restitution for the Fixture.
+		* @param restitution The restitution.
+		**/
+		void setRestitution(float restitution);
+
+		/**
+		* Sets the density of the Fixture.
+		* @param density The density of the Fixture.
+		**/
+		void setDensity(float density);
+
+		/**
+		* Set whether this Fixture should be a sensor or not.
+		* @param sensor True if sensor, false if not.
+		**/
+		void setSensor(bool sensor);
+
+		/**
+		* Gets the friction of the Fixture.
+		* @returns The friction.
+		**/
+		float getFriction() const;
+
+		/**
+		* Gets the restitution of the Fixture.
+		* @return The restitution of the Fixture.
+		**/
+		float getRestitution() const;
+
+		/**
+		* Gets the density of the Fixture.
+		* @return The density.
+		**/
+		float getDensity() const;
+
+		/**
+		* Checks whether this Fixture acts as a sensor.
+		* @return True if sensor, false otherwise.
+		**/
+		bool isSensor() const;
+
+		/**
+		* Get the body attatched to this Fixture.
+		* @return The parent Body.
+		**/
+		Body * getBody() const;
+
+		/**
+		* Checks if a point is inside the Fixture.
+		* @param x The x-component of the Fixture.
+		* @param y The y-component of the Fixture.
+		**/
+		bool testPoint(float x, float y) const;
+
+		/**
+		* Tests whether a line segment intersects a Fixture.
+		**/
+		int testSegment(lua_State * L);
+
+		/**
+		* Sets the filter data. An integer array is used even though the
+		* first two elements are unsigned shorts. The elements are:
+		* category (16-bits), mask (16-bits) and group (32-bits/int).
+		**/
+		void setFilterData(int * v);
+
+		/**
+		* Gets the filter data. An integer array is used even though the
+		* first two elements are unsigned shorts. The elements are:
+		* category (16-bits), mask (16-bits) and group (32-bits/int).
+		**/
+		void getFilterData(int * v);
+
+		void setGroupIndex(int index);
+		int getGroupIndex() const;
+
+		int setCategory(lua_State * L);
+		int setMask(lua_State * L);
+		int getCategory(lua_State * L);
+		int getMask(lua_State * L);
+		uint16 getBits(lua_State * L);
+		int pushBits(lua_State * L, uint16 bits);
+
+		/**
+		* This function stores an in-C reference to
+		* arbitrary Lua data in the Box2D Fixture object.
+		*
+		* The data set here will be passed to the collision
+		* handler when collisions occur.
+		**/
+		int setData(lua_State * L);
+
+		/**
+		* Gets the data set with setData. If no
+		* data is set, nil is returned.
+		**/
+		int getData(lua_State * L);
+
+		/**
+		* Gets the bounding box for this Fixture.
+		* The function returns eight values which can be
+		* passed directly to love.graphics.polygon.
+		**/
+		int getBoundingBox(lua_State * L);
+	};
+
+} // box2d
+} // physics
+} // love
+
+#endif // LOVE_PHYSICS_BOX2D_FIXTURE_H

src/modules/physics/box2d/Physics.cpp

@@ -78,41 +78,40 @@ namespace box2d
 		return new CircleShape(body, &def);
 	}
 
-	PolygonShape * Physics::newRectangleShape(Body * body, float w, float h)
+	PolygonShape * Physics::newRectangleShape(float w, float h)
 	{
 		return newRectangleShape(body, 0, 0, w, h, 0);
 	}
 
-	PolygonShape * Physics::newRectangleShape(Body * body, float x, float y, float w, float h)
+	PolygonShape * Physics::newRectangleShape(float x, float y, float w, float h)
 	{
 		return newRectangleShape(body, x, y, w, h, 0);
 	}
 
-	PolygonShape * Physics::newRectangleShape(Body * body, float x, float y, float w, float h, float angle)
+	PolygonShape * Physics::newRectangleShape(float x, float y, float w, float h, float angle)
 	{
-		b2PolygonDef def;
-		def.friction = 0.5f;
-		def.restitution = 0.1f;
-		def.density = 1.0f;
-		def.SetAsBox(w/2.0f, h/2.0f, b2Vec2(x, y), angle);
-		return new PolygonShape(body, &def);
+		b2PolygonShape s;
+		s.SetAsBox(w/2.0f, h/2.0f, b2Vec2(x, y), angle);
+		return new PolygonShape(&s);
+	}
+	
+	PolygonShape * Physics::newEdgeShape(float x1, float y1, float x2, float y2)
+	{
+		b2PolygonShape s;
+		s.SetAsEdge(b2vec2(x1, y1), b2vec2(x2, y2));
+		return new PolygonShape(&s);
 	}
 
 	int Physics::newPolygonShape(lua_State * L)
 	{
 		int argc = lua_gettop(L);
-		int vcount = (int)(argc-1)/2;
-		// 1 body + 3 vertices
-		love::luax_assert_argc(L, 1 + (2 * 3));
-
-		Body * b = luax_checkbody(L, 1);
+		int vcount = (int)argc/2;
+		// 3 vertices
+		love::luax_assert_argc(L, 2 * 3);
 
-		b2PolygonDef def;
-		def.friction = 0.5f;
-		def.restitution = 0.1f;
-		def.density = 1.0f;
+		b2PolygonShape s;
 
-		std::vector<point2d> points(def.vertexCount);
+		std::vector<point2d> points(s.m_vertexCount);
 		std::vector<point2d> convex_hull;
 
 		for(int i = 0;i<vcount;i++)
@@ -126,16 +125,22 @@ namespace box2d
 
 		// Compute convex hull.
 		GrahamScanConvexHull()(points, convex_hull);
+		
+		int count = convex_hull.size();
 
-		def.vertexCount = (int32)convex_hull.size();
-
-		if(def.vertexCount < 3)
+		if(count < 3)
 			return luaL_error(L, "Polygon degenerated to less than three points.");
+		
+		b2vec2 vecs[] = new b2vec2[count];
+		
+		for (int i = 0; i < count; i++) {
+			vecs[i].Set(convex_hull[i].x, convex_hull[i].y);
+		}
+		
+		s.Set(vecs, count);
 
-		for(int i = 0;i<def.vertexCount;i++)
-			def.vertices[def.vertexCount-i-1].Set((float)convex_hull[i].x, (float)convex_hull[i].y);
-
-		PolygonShape * p = new PolygonShape(b, &def);
+		PolygonShape * p = new PolygonShape(&s);
+		delete[] vecs;
 
 		luax_newtype(L, "PolygonShape", PHYSICS_POLYGON_SHAPE_T, (void*)p);
 

src/modules/physics/box2d/Physics.h

@@ -92,7 +92,7 @@ namespace box2d
 		* @param body The Body to create the Shape on.
 		* @param radius The radius of the circle.
 		**/
-		CircleShape * newCircleShape(Body * body, float radius);
+		CircleShape * newCircleShape(float radius);
 
 		/**
 		* Creates a new CircleShape at (x,y) in local coorinates.
@@ -101,7 +101,7 @@ namespace box2d
 		* @param y The offset along the y-axis.
 		* @param radius The radius of the circle.
 		**/
-		CircleShape * newCircleShape(Body * body, float x, float y, float radius);
+		CircleShape * newCircleShape(float x, float y, float radius);
 
 		/**
 		* Shorthand for creating rectangular PolygonShapes. The rectangle
@@ -109,7 +109,7 @@ namespace box2d
 		* @param w The width of the rectangle.
 		* @param h The height of the rectangle.
 		**/
-		PolygonShape * newRectangleShape(Body * body, float w, float h);
+		PolygonShape * newRectangleShape(float w, float h);
 
 		/**
 		* Shorthand for creating rectangular PolygonShapes. The rectangle
@@ -119,7 +119,7 @@ namespace box2d
 		* @param w The width of the rectangle.
 		* @param h The height of the rectangle.
 		**/
-		PolygonShape * newRectangleShape(Body * body, float x, float y, float w, float h);
+		PolygonShape * newRectangleShape(float x, float y, float w, float h);
 
 		/**
 		* Shorthand for creating rectangular PolygonShapes. The rectangle
@@ -130,7 +130,18 @@ namespace box2d
 		* @param h The height of the rectangle.
 		* @param angle The angle of the rectangle. (rad)
 		**/
-		PolygonShape * newRectangleShape(Body * body, float x, float y, float w, float h, float angle);
+		PolygonShape * newRectangleShape(float x, float y, float w, float h, float angle);
+        
+        /**
+         * Shorthand for creating edge PolygonShapes. The edge
+         * will be created at (x,y) in local coordinates.
+         * @param x The offset along the x-axis.
+         * @param y The offset along the y-axis.
+         * @param w The width of the rectangle.
+         * @param h The height of the rectangle.
+         * @param angle The angle of the rectangle. (rad)
+         **/
+		PolygonShape * newEdgeShape(float x1, float y1, float x2, float y2);
 
 		/**
 		* Creates a new PolygonShape.

src/modules/physics/box2d/PolygonShape.cpp

@@ -30,14 +30,9 @@ namespace physics
 {
 namespace box2d
 {
-	PolygonShape::PolygonShape(Body * body, b2PolygonDef * def)
-		: Shape(body)
+	PolygonShape::PolygonShape(b2PolygonShape * p)
 	{
-		for(int i = 0; i<def->vertexCount; i++)
-			def->vertices[i] = body->world->scaleDown(def->vertices[i]);
-
-		def->userData = (void*)data;
-		shape = body->body->CreateShape(def);
+		shape = p;
 	}
 
 	PolygonShape::~PolygonShape()
@@ -48,11 +43,10 @@ namespace box2d
 	{
 		love::luax_assert_argc(L, 0);
 		b2PolygonShape * p = (b2PolygonShape *)shape;
-		const b2Vec2 * vertices = p->GetVertices();
 		int count = p->GetVertexCount();
 		for(int i = 0;i<count; i++)
 		{
-			b2Vec2 v = body->world->scaleUp(body->body->GetWorldPoint(vertices[i]));
+			b2Vec2 v = p->GetVertex(i);
 			lua_pushnumber(L, v.x);
 			lua_pushnumber(L, v.y);
 		}

src/modules/physics/box2d/PolygonShape.h

@@ -47,7 +47,7 @@ namespace box2d
 		* @param body The parent Body. 
 		* @param def The polygon definition.
 		**/
-		PolygonShape(Body * body, b2PolygonDef * def);
+		PolygonShape(b2PolygonShape * p);
 
 		virtual ~PolygonShape();
 

src/modules/physics/box2d/Shape.cpp

@@ -33,265 +33,29 @@ namespace physics
 {
 namespace box2d
 {
-	Shape::Shape(Body * body)
-		: body(body), shape(NULL)
+	Shape::Shape()
+		: shape(NULL)
 	{
-		body->retain();
-		data = new shapeudata();
-		data->ref = 0;
 	}
 
 	Shape::~Shape()
 	{
-		if(data->ref != 0)
-			delete data->ref;
-
-		delete data;
-		data = 0;
-
-		if (shape)
-			body->body->DestroyShape(shape);
 		shape = 0;
-
-		body->release();
 	}
 
 	Shape::Type Shape::getType() const
 	{
 		switch(shape->GetType())
 		{
-		case e_circleShape:
+		case b2Shape::e_circle:
 			return SHAPE_CIRCLE;
-		case e_polygonShape:
+		case b2Shape::e_polygon:
 			return SHAPE_POLYGON;
 		default:
 			return SHAPE_INVALID;
 		}
 	}
 
-	void Shape::setFriction(float friction)
-	{
-		shape->m_friction = friction;
-	}
-
-	void Shape::setRestitution(float restitution)
-	{
-		shape->m_restitution = restitution;
-	}
-
-	void Shape::setDensity(float density)
-	{
-		shape->m_density = density;
-	}
-
-	void Shape::setSensor(bool sensor)
-	{
-		shape->m_isSensor = sensor;
-	}
-
-	float Shape::getFriction() const
-	{
-		return shape->GetFriction();
-	}
-
-	float Shape::getRestitution() const
-	{
-		return shape->GetRestitution();
-	}
-
-	float Shape::getDensity() const
-	{
-		return shape->m_density;
-	}
-
-	bool Shape::isSensor() const
-	{
-		return shape->IsSensor();
-	}
-
-	Body * Shape::getBody() const
-	{
-		return body;
-	}
-
-	bool Shape::testPoint(float x, float y) const
-	{
-		return shape->TestPoint(shape->GetBody()->GetXForm(), body->getWorld()->scaleDown(b2Vec2(x, y)));
-	}
-
-	int Shape::testSegment(lua_State * L)
-	{
-		love::luax_assert_argc(L, 4, 4);
-
-		b2Segment s;
-
-		s.p1.x = (float)lua_tonumber(L, 1);
-		s.p1.y = (float)lua_tonumber(L, 2);
-		s.p2.x = (float)lua_tonumber(L, 3);
-		s.p2.y = (float)lua_tonumber(L, 4);
-
-		s.p1 = body->getWorld()->scaleDown(s.p1);
-		s.p2 = body->getWorld()->scaleDown(s.p2);
-
-		float lambda;
-		b2Vec2 normal;
-
-		if(shape->TestSegment(shape->GetBody()->GetXForm(), &lambda, &normal, s, 1.0f))
-		{
-			lua_pushnumber(L, lambda);
-			normal = body->getWorld()->scaleUp(normal);
-			lua_pushnumber(L, normal.x);
-			lua_pushnumber(L, normal.y);
-			return 3;
-		}
-
-		return 0;
-	}
-
-	void Shape::setFilterData(int * v)
-	{
-		b2FilterData f;
-		f.categoryBits = (unsigned short)v[0];
-		f.maskBits = (unsigned short)v[1];
-		f.groupIndex = v[2];
-		shape->SetFilterData(f);
-		shape->GetBody()->GetWorld()->Refilter(shape);
-	}
-
-	void Shape::getFilterData(int * v)
-	{
-		b2FilterData f = shape->GetFilterData();
-		v[0] = (int)f.categoryBits;
-		v[1] = (int)f.maskBits;
-		v[2] = f.groupIndex;
-	}
-
-	int Shape::setCategory(lua_State * L)
-	{
-		b2FilterData f = shape->GetFilterData();
-		f.categoryBits = (uint16)getBits(L);
-		shape->SetFilterData(f);
-		shape->GetBody()->GetWorld()->Refilter(shape);
-		return 0;
-	}
-
-	int Shape::setMask(lua_State * L)
-	{
-		b2FilterData f = shape->GetFilterData();
-		f.maskBits = ~(uint16)getBits(L);
-		shape->SetFilterData(f);
-		shape->GetBody()->GetWorld()->Refilter(shape);
-		return 0;
-	}
-
-	void Shape::setGroupIndex(int index)
-	{
-		b2FilterData f = shape->GetFilterData();
-		f.groupIndex = (uint16)index;
-		shape->SetFilterData(f);
-		shape->GetBody()->GetWorld()->Refilter(shape);
-	}
-
-	int Shape::getGroupIndex() const
-	{
-		b2FilterData f = shape->GetFilterData();
-		return f.groupIndex;
-	}
-
-	int Shape::getCategory(lua_State * L)
-	{
-		return pushBits(L, shape->GetFilterData().categoryBits);
-	}
-
-	int Shape::getMask(lua_State * L)
-	{
-		return pushBits(L, ~(shape->GetFilterData().maskBits));
-	}
-
-	uint16 Shape::getBits(lua_State * L)
-	{
-		// Get number of args.
-		int argc = lua_gettop(L);
-
-		// The new bitset.
-		std::bitset<16> b;
-
-		for(int i = 1;i<=argc;i++)
-		{
-			size_t bpos = (size_t)(lua_tointeger(L, i)-1);
-			if(bpos > 16)
-				return luaL_error(L, "Values must be in range 1-16.");
-			b.set(bpos, true);
-		}
-
-		return (uint16)b.to_ulong();
-	}
-
-	int Shape::pushBits(lua_State * L, uint16 bits)
-	{
-		// Create a bitset.
-		std::bitset<16> b((int)bits);
-
-		// Push all set bits.
-		for(int i = 0;i<16;i++)
-			if(b.test(i))
-				lua_pushinteger(L, i+1);
-
-		// Count number of set bits.
-		return (int)b.count();
-	}
-
-	int Shape::setData(lua_State * L)
-	{
-		love::luax_assert_argc(L, 1, 1);
-
-		if(data->ref != 0)
-		{
-			delete data->ref;
-			data->ref = 0;
-		}
-
-		data->ref = new Reference(L);
-		return 0;
-	}
-
-	int Shape::getData(lua_State * L)
-	{
-		love::luax_assert_argc(L, 0, 0);
-		if(data->ref != 0)
-			data->ref->push();
-		else
-			lua_pushnil(L);
-
-		return 1;
-	}
-
-	int Shape::getBoundingBox(lua_State * L)
-	{
-		love::luax_assert_argc(L, 0, 0);
-		b2AABB bb;
-		shape->ComputeAABB(&bb, shape->GetBody()->GetXForm());
-		bb = body->getWorld()->scaleUp(bb);
-
-		// Top left.
-		lua_pushnumber(L, bb.lowerBound.x);
-		lua_pushnumber(L, bb.upperBound.y);
-
-		// Bottom left.
-		lua_pushnumber(L, bb.lowerBound.x);
-		lua_pushnumber(L, bb.lowerBound.y);
-
-		// Bottom right.
-		lua_pushnumber(L, bb.upperBound.x);
-		lua_pushnumber(L, bb.lowerBound.y);
-
-		// Top right.
-		lua_pushnumber(L, bb.upperBound.x);
-		lua_pushnumber(L, bb.upperBound.y);
-
-		return 8;
-	}
-
 } // box2d
 } // physics
 } // love

src/modules/physics/box2d/Shape.h

@@ -35,20 +35,9 @@ namespace physics
 {
 namespace box2d
 {
-	/**
-	* This struct is stored in a void pointer
-	* in the Box2D Shape class. For now, all we
-	* need is a Lua reference to arbitrary data,
-	* but we might need more later.
-	**/
-	struct shapeudata
-	{
-		// Reference to arbitrary data.
-		Reference * ref;
-	};
 
 	/**
-	* A Shape is geometry attached to a Body.
+	* A Shape is geometry, attached to a Body via a Fixture.
 	* A Body has position and orientation, and
 	* a Shape's geometry will be affected by the parent
 	* body's transformation.
@@ -57,26 +46,15 @@ namespace box2d
 	{
 	protected:
 
-		// A pointer to the parent Body. If the Body
-		// is destroyed, all child shapes are destroyed as well.
-		// This ensures that all child shapes are always destroyed
-		// *before* the parent Body.
-		Body * body;
-
 		// The Box2D shape.
 		b2Shape * shape;
 
-		// Our shape data, to be stored in
-		// the Box2D shape.
-		shapeudata * data;
-
 	public:
 
 		/**
-		* Creates a Shape attatched to the specified
-		* Body.
+		* Creates a Shape.
 		**/
-		Shape(Body * body);
+		Shape();
 
 		virtual ~Shape();
 
@@ -85,118 +63,6 @@ namespace box2d
 		* debug drawing.
 		**/
 		Type getType() const;
-
-		/**
-		* Sets the friction of the Shape.
-		* @param friction The new friction.
-		**/
-		void setFriction(float friction);
-
-		/**
-		* Sets the restitution for the Shape.
-		* @param restitution The restitution.
-		**/
-		void setRestitution(float restitution);
-
-		/**
-		* Sets the density of the Shape.
-		* @param density The density of the Shape.
-		**/
-		void setDensity(float density);
-
-		/**
-		* Set whether this shape should be a sensor or not.
-		* @param sensor True if sensor, false if not.
-		**/
-		void setSensor(bool sensor);
-
-		/**
-		* Gets the friction of the Shape.
-		* @returns The friction.
-		**/
-		float getFriction() const;
-
-		/**
-		* Gets the restitution of the Shape.
-		* @return The restitution of the Shape.
-		**/
-		float getRestitution() const;
-
-		/**
-		* Gets the density of the Shape.
-		* @return The density.
-		**/
-		float getDensity() const;
-
-		/**
-		* Checks whether this Shape acts as a sensor.
-		* @return True if sensor, false otherwise.
-		**/
-		bool isSensor() const;
-
-		/**
-		* Get the body attatched to this Shape.
-		* @return The parent Body.
-		**/
-		Body * getBody() const;
-
-		/**
-		* Checks if a point is inside the Shape.
-		* @param x The x-component of the Shape.
-		* @param y The y-component of the Shape.
-		**/
-		bool testPoint(float x, float y) const;
-
-		/**
-		* Tests whether a line segment intersects a Shape.
-		**/
-		int testSegment(lua_State * L);
-
-		/**
-		* Sets the filter data. An integer array is used even though the
-		* first two elements are unsigned shorts. The elements are:
-		* category (16-bits), mask (16-bits) and group (32-bits/int).
-		**/
-		void setFilterData(int * v);
-
-		/**
-		* Gets the filter data. An integer array is used even though the
-		* first two elements are unsigned shorts. The elements are:
-		* category (16-bits), mask (16-bits) and group (32-bits/int).
-		**/
-		void getFilterData(int * v);
-
-		void setGroupIndex(int index);
-		int getGroupIndex() const;
-
-		int setCategory(lua_State * L);
-		int setMask(lua_State * L);
-		int getCategory(lua_State * L);
-		int getMask(lua_State * L);
-		uint16 getBits(lua_State * L);
-		int pushBits(lua_State * L, uint16 bits);
-
-		/**
-		* This function stores an in-C reference to
-		* arbitrary Lua data in the Box2D shape object.
-		*
-		* The data set here will be passed to the collision
-		* handler when collisions occur.
-		**/
-		int setData(lua_State * L);
-
-		/**
-		* Gets the data set with setData. If no
-		* data is set, nil is returned.
-		**/
-		int getData(lua_State * L);
-
-		/**
-		* Gets the bounding box for this Shape.
-		* The function returns eight values which can be
-		* passed directly to love.graphics.polygon.
-		**/
-		int getBoundingBox(lua_State * L);
 	};
 
 } // box2d

src/modules/physics/box2d/wrap_CircleShape.cpp

@@ -38,54 +38,19 @@ namespace box2d
 		return 1;
 	}
 
-	int w_CircleShape_getLocalCenter(lua_State * L)
-	{
-		CircleShape * c = luax_checkcircleshape(L, 1);
-		float x, y;
-		c->getLocalCenter(x, y);
-		lua_pushnumber(L, x);
-		lua_pushnumber(L, y);
-		return 2;
-	}
-
-	int w_CircleShape_getWorldCenter(lua_State * L)
-	{
-		CircleShape * c = luax_checkcircleshape(L, 1);
-		float x, y;
-		c->getWorldCenter(x, y);
-		lua_pushnumber(L, x);
-		lua_pushnumber(L, y);
-		return 2;
+	int w_CircleShape_setRadius(lua_State * L)
+    {
+        CircleShape * c = luax_checkcircleshape(L, 1);
+        float r = (float)luaL_checknumber(L, 2);
+		c->setRadius(r);
+		return 0;
 	}
 
 	static const luaL_Reg functions[] = {
 		{ "getRadius", w_CircleShape_getRadius },
-		{ "getLocalCenter", w_CircleShape_getLocalCenter },
-		{ "getWorldCenter", w_CircleShape_getWorldCenter },
+		{ "setRadius", w_CircleShape_setRadius },
 		// From Shape.
 		{ "getType", w_Shape_getType },
-		{ "setFriction", w_Shape_setFriction },
-		{ "setRestitution", w_Shape_setRestitution },
-		{ "setDensity", w_Shape_setDensity },
-		{ "setSensor", w_Shape_setSensor },
-		{ "getFriction", w_Shape_getFriction },
-		{ "getRestitution", w_Shape_getRestitution },
-		{ "getDensity", w_Shape_getDensity },
-		{ "getBody", w_Shape_getBody },
-		{ "isSensor", w_Shape_isSensor },
-		{ "testPoint", w_Shape_testPoint },
-		{ "testSegment", w_Shape_testSegment },
-		{ "setFilterData", w_Shape_setFilterData },
-		{ "getFilterData", w_Shape_getFilterData },
-		{ "setCategory", w_Shape_setCategory },
-		{ "getCategory", w_Shape_getCategory },
-		{ "setMask", w_Shape_setMask },
-		{ "getMask", w_Shape_getMask },
-		{ "setData", w_Shape_setData },
-		{ "getData", w_Shape_getData },
-		{ "getBoundingBox", w_Shape_getBoundingBox },
-		{ "getGroupIndex", w_Shape_getGroupIndex },
-		{ "setGroupIndex", w_Shape_setGroupIndex },
 		{ "destroy", w_Shape_destroy },
 		{ 0, 0 }
 	};

src/modules/physics/box2d/wrap_CircleShape.h

@@ -34,8 +34,7 @@ namespace box2d
 {
 	CircleShape * luax_checkcircleshape(lua_State * L, int idx);
 	int w_CircleShape_getRadius(lua_State * L);
-	int w_CircleShape_getLocalCenter(lua_State * L);
-	int w_CircleShape_getWorldCenter(lua_State * L);
+	int w_CircleShape_setRadius(lua_State * L);
 	int luaopen_circleshape(lua_State * L);
 
 } // box2d

src/modules/physics/box2d/wrap_PolygonShape.cpp

@@ -42,28 +42,6 @@ namespace box2d
 		{ "getPoints", w_PolygonShape_getPoints },
 		// From Shape.
 		{ "getType", w_Shape_getType },
-		{ "setFriction", w_Shape_setFriction },
-		{ "setRestitution", w_Shape_setRestitution },
-		{ "setDensity", w_Shape_setDensity },
-		{ "setSensor", w_Shape_setSensor },
-		{ "getFriction", w_Shape_getFriction },
-		{ "getRestitution", w_Shape_getRestitution },
-		{ "getDensity", w_Shape_getDensity },
-		{ "getBody", w_Shape_getBody },
-		{ "isSensor", w_Shape_isSensor },
-		{ "testPoint", w_Shape_testPoint },
-		{ "testSegment", w_Shape_testSegment },
-		{ "setFilterData", w_Shape_setFilterData },
-		{ "getFilterData", w_Shape_getFilterData },
-		{ "setCategory", w_Shape_setCategory },
-		{ "getCategory", w_Shape_getCategory },
-		{ "setMask", w_Shape_setMask },
-		{ "getMask", w_Shape_getMask },
-		{ "setData", w_Shape_setData },
-		{ "getData", w_Shape_getData },
-		{ "getBoundingBox", w_Shape_getBoundingBox },
-		{ "getGroupIndex", w_Shape_getGroupIndex },
-		{ "setGroupIndex", w_Shape_setGroupIndex },
 		{ "destroy", w_Shape_destroy },
 		{ 0, 0 }
 	};

src/modules/physics/box2d/wrap_Shape.cpp

@@ -41,180 +41,6 @@ namespace box2d
 		return 1;
 	}
 
-	int w_Shape_setFriction(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		float arg1 = (float)luaL_checknumber(L, 2);
-		t->setFriction(arg1);
-		return 0;
-	}
-
-	int w_Shape_setRestitution(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		float arg1 = (float)luaL_checknumber(L, 2);
-		t->setRestitution(arg1);
-		return 0;
-	}
-
-	int w_Shape_setDensity(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		float arg1 = (float)luaL_checknumber(L, 2);
-		t->setDensity(arg1);
-		return 0;
-	}
-
-	int w_Shape_setSensor(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		bool arg1 = luax_toboolean(L, 2);
-		t->setSensor(arg1);
-		return 0;
-	}
-
-	int w_Shape_getFriction(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		lua_pushnumber(L, t->getFriction());
-		return 1;
-	}
-
-	int w_Shape_getRestitution(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		lua_pushnumber(L, t->getRestitution());
-		return 1;
-	}
-
-	int w_Shape_getDensity(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		lua_pushnumber(L, t->getDensity());
-		return 1;
-	}
-
-	int w_Shape_isSensor(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		luax_pushboolean(L, t->isSensor());
-		return 1;
-	}
-
-	int w_Shape_getBody(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		Body * body = t->getBody();
-		if(body == 0)
-			return 0;
-		body->retain();
-		luax_newtype(L, "Body", PHYSICS_BODY_T, (void*)body);
-		return 1;
-	}
-
-	int w_Shape_testPoint(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		float x = (float)luaL_checknumber(L, 2);
-		float y = (float)luaL_checknumber(L, 3);
-		luax_pushboolean(L, t->testPoint(x, y));
-		return 1;
-	}
-
-	int w_Shape_testSegment(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		lua_remove(L, 1);
-		return t->testSegment(L);
-	}
-
-	int w_Shape_setFilterData(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		int v[3];
-		v[0] = luaL_checkint(L, 2);
-		v[1] = luaL_checkint(L, 3);
-		v[2] = luaL_checkint(L, 4);
-		t->setFilterData(v);
-		return 0;
-	}
-
-	int w_Shape_getFilterData(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		int v[3];
-		t->getFilterData(v);
-		lua_pushinteger(L, v[0]);
-		lua_pushinteger(L, v[1]);
-		lua_pushinteger(L, v[2]);
-		return 3;
-	}
-
-	int w_Shape_setCategory(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		lua_remove(L, 1);
-		return t->setCategory(L);
-	}
-
-	int w_Shape_getCategory(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		lua_remove(L, 1);
-		return t->getCategory(L);
-	}
-
-	int w_Shape_setMask(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		lua_remove(L, 1);
-		return t->setMask(L);
-	}
-
-	int w_Shape_getMask(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		lua_remove(L, 1);
-		return t->getMask(L);
-	}
-
-	int w_Shape_setData(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		lua_remove(L, 1);
-		return t->setData(L);
-	}
-
-	int w_Shape_getData(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		lua_remove(L, 1);
-		return t->getData(L);
-	}
-
-	int w_Shape_getBoundingBox(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		lua_remove(L, 1);
-		return t->getBoundingBox(L);
-	}
-
-	int w_Shape_getGroupIndex(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		int i = t->getGroupIndex();
-		lua_pushinteger(L, i);
-		return 1;
-	}
-
-	int w_Shape_setGroupIndex(lua_State * L)
-	{
-		Shape * t = luax_checkshape(L, 1);
-		int i = luaL_checkint(L, 2);
-		t->setGroupIndex(i);
-		return 0;
-	}
-
 	int w_Shape_destroy(lua_State * L)
 	{
 		Proxy * p = (Proxy *)lua_touserdata(L, 1);
@@ -227,28 +53,6 @@ namespace box2d
 
 	static const luaL_Reg functions[] = {
 		{ "getType", w_Shape_getType },
-		{ "setFriction", w_Shape_setFriction },
-		{ "setRestitution", w_Shape_setRestitution },
-		{ "setDensity", w_Shape_setDensity },
-		{ "setSensor", w_Shape_setSensor },
-		{ "getFriction", w_Shape_getFriction },
-		{ "getRestitution", w_Shape_getRestitution },
-		{ "getDensity", w_Shape_getDensity },
-		{ "getBody", w_Shape_getBody },
-		{ "isSensor", w_Shape_isSensor },
-		{ "testPoint", w_Shape_testPoint },
-		{ "testSegment", w_Shape_testSegment },
-		{ "setFilterData", w_Shape_setFilterData },
-		{ "getFilterData", w_Shape_getFilterData },
-		{ "setCategory", w_Shape_setCategory },
-		{ "getCategory", w_Shape_getCategory },
-		{ "setMask", w_Shape_setMask },
-		{ "getMask", w_Shape_getMask },
-		{ "setData", w_Shape_setData },
-		{ "getData", w_Shape_getData },
-		{ "getBoundingBox", w_Shape_getBoundingBox },
-		{ "getGroupIndex", w_Shape_getGroupIndex },
-		{ "setGroupIndex", w_Shape_setGroupIndex },
 		{ "destroy", w_Shape_destroy },
 		{ 0, 0 }
 	};

src/modules/physics/box2d/wrap_Shape.h

@@ -33,28 +33,6 @@ namespace box2d
 {
 	Shape * luax_checkshape(lua_State * L, int idx);
 	int w_Shape_getType(lua_State * L);
-	int w_Shape_setFriction(lua_State * L);
-	int w_Shape_setRestitution(lua_State * L);
-	int w_Shape_setDensity(lua_State * L);
-	int w_Shape_setSensor(lua_State * L);
-	int w_Shape_getFriction(lua_State * L);
-	int w_Shape_getRestitution(lua_State * L);
-	int w_Shape_getDensity(lua_State * L);
-	int w_Shape_isSensor(lua_State * L);
-	int w_Shape_getBody(lua_State * L);
-	int w_Shape_testPoint(lua_State * L);
-	int w_Shape_testSegment(lua_State * L);
-	int w_Shape_setFilterData(lua_State * L);
-	int w_Shape_getFilterData(lua_State * L);
-	int w_Shape_setCategory(lua_State * L);
-	int w_Shape_getCategory(lua_State * L);
-	int w_Shape_setMask(lua_State * L);
-	int w_Shape_getMask(lua_State * L);
-	int w_Shape_setData(lua_State * L);
-	int w_Shape_getData(lua_State * L);
-	int w_Shape_getBoundingBox(lua_State * L);
-	int w_Shape_getGroupIndex(lua_State * L);
-	int w_Shape_setGroupIndex(lua_State * L);
 	int w_Shape_destroy(lua_State * L);
 	int luaopen_shape(lua_State * L);