fixed cmake/jam for HelloWorld sample

Demos/HelloWorld/CMakeLists.txt

@@ -0,0 +1,14 @@
+# HelloWorld is a minimal sample creating, stepping and deleting a Bullet dynamics world
+
+INCLUDE_DIRECTORIES(
+${BULLET_PHYSICS_SOURCE_DIR}/src }
+)
+
+LINK_LIBRARIES(
+ LibBulletDynamics LibBulletCollision LibLinearMath 
+)
+
+ADD_EXECUTABLE(HelloWorld
+	HelloWorld.cpp 
+)
+

Demos/HelloWorld/HelloWorld.cpp

@@ -116,9 +116,9 @@ int main(int argc, char** argv)
 		dynamicsWorld->stepSimulation(1.f/60.f,10);
 		
 		//print positions of all objects
-		for (i=dynamicsWorld->getNumCollisionObjects()-1; i>=0 ;i--)
+		for (int j=dynamicsWorld->getNumCollisionObjects()-1; j>=0 ;j--)
 		{
-			btCollisionObject* obj = dynamicsWorld->getCollisionObjectArray()[i];
+			btCollisionObject* obj = dynamicsWorld->getCollisionObjectArray()[j];
 			btRigidBody* body = btRigidBody::upcast(obj);
 			if (body && body->getMotionState())
 			{

Demos/HelloWorld/Jamfile

@@ -0,0 +1,3 @@
+SubDir TOP Demos HelloWorld ;
+
+BulletBasicDemo HelloWorld : [ Wildcard *.h *.cpp  ] ;