From 6e7d83d7eae60d155761bf9c7ab44c1f34e86b1a Mon Sep 17 00:00:00 2001
From: Bill Meltsner <bill@meltsner.com>
Date: Fri, 23 Sep 2011 22:32:39 -0400
Subject: [PATCH] Update ChainShape API

--HG--
branch : box2d-update
---
 src/modules/physics/box2d/ChainShape.cpp      | 12 +++++++++---
 src/modules/physics/box2d/ChainShape.h        |  5 +++++
 src/modules/physics/box2d/wrap_ChainShape.cpp |  8 ++++++++
 src/modules/physics/box2d/wrap_ChainShape.h   |  1 +
 4 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/src/modules/physics/box2d/ChainShape.cpp b/src/modules/physics/box2d/ChainShape.cpp
index 1e74d5177..693719a67 100644
--- a/src/modules/physics/box2d/ChainShape.cpp
+++ b/src/modules/physics/box2d/ChainShape.cpp
@@ -71,23 +71,29 @@ namespace box2d
 		return new EdgeShape(&e);
 	}
 	
+	int ChainShape::getChildCount() const
+	{
+		b2ChainShape * c = (b2ChainShape *)shape;
+		return c->GetChildCount();
+	}
+	
 	int ChainShape::getVertexCount() const
 	{
 		b2ChainShape * c = (b2ChainShape *)shape;
-		return c->GetVertexCount();
+		return c->m_count;
 	}
 	
 	b2Vec2 ChainShape::getVertex(int index) const
 	{
 		b2ChainShape * c = (b2ChainShape *)shape;
-		const b2Vec2 & v = c->GetVertex(index);
+		const b2Vec2 & v = c->m_vertices[index];
 		return Physics::scaleUp(v);
 	}
 	
 	const b2Vec2 * ChainShape::getVertices() const
 	{
 		b2ChainShape * c = (b2ChainShape *)shape;
-		return c->GetVertices();
+		return c->m_vertices;
 	}
 
 } // box2d
diff --git a/src/modules/physics/box2d/ChainShape.h b/src/modules/physics/box2d/ChainShape.h
index c96f4e228..ccabc2e08 100644
--- a/src/modules/physics/box2d/ChainShape.h
+++ b/src/modules/physics/box2d/ChainShape.h
@@ -66,6 +66,11 @@ namespace box2d
 		**/
 		void setPrevVertex(float x, float y);
 		
+		/**
+		* Gets the number of children shapes.
+		**/
+		int getChildCount() const;
+		
 		/**
 		* Returns a child EdgeShape.
 		* @param index The index of the child shape.
diff --git a/src/modules/physics/box2d/wrap_ChainShape.cpp b/src/modules/physics/box2d/wrap_ChainShape.cpp
index 8db43e3cc..ef5195cfe 100644
--- a/src/modules/physics/box2d/wrap_ChainShape.cpp
+++ b/src/modules/physics/box2d/wrap_ChainShape.cpp
@@ -50,6 +50,13 @@ namespace box2d
 		return 0;
 	}
 	
+	int w_ChainShape_getChildCount(lua_State * L)
+	{
+		ChainShape * c = luax_checkchainshape(L, 1);
+		lua_pushinteger(L, c->getChildCount());
+		return 1;
+	}
+	
 	int w_ChainShape_getChildEdge(lua_State * L)
 	{
 		ChainShape * c = luax_checkchainshape(L, 1);
@@ -96,6 +103,7 @@ namespace box2d
 	static const luaL_Reg functions[] = {
 		{ "setNextVertex", w_ChainShape_setNextVertex },
 		{ "setPrevVertex", w_ChainShape_setPrevVertex },
+		{ "getChildCount", w_ChainShape_getChildCount },
 		{ "getChildEdge", w_ChainShape_getChildEdge },
 		{ "getVertexCount", w_ChainShape_getVertexCount },
 		{ "getVertex", w_ChainShape_getVertex },
diff --git a/src/modules/physics/box2d/wrap_ChainShape.h b/src/modules/physics/box2d/wrap_ChainShape.h
index 88989d063..ae81e4ba8 100644
--- a/src/modules/physics/box2d/wrap_ChainShape.h
+++ b/src/modules/physics/box2d/wrap_ChainShape.h
@@ -36,6 +36,7 @@ namespace box2d
 	
 	int w_ChainShape_setNextVertex(lua_State * L);
 	int w_ChainShape_setPrevVertex(lua_State * L);
+	int w_ChainShape_getChildCount(lua_State * L);
 	int w_ChainShape_getChildEdge(lua_State * L);
 	int w_ChainShape_getVertexCount(lua_State * L);
 	int w_ChainShape_getVertex(lua_State * L);