#!/usr/bin/python
#
# C++ version Copyright (c) 2006-2007 Erin Catto http://www.gphysics.com
# Python version Copyright (c) 2008 kne / sirkne at gmail dot com
# 
# Implemented using the pybox2d SWIG interface for Box2D (pybox2d.googlecode.com)
# 
# 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.

from test_main import *
class SphereStack (Framework):
    name="SphereStack"
    bodies = [ ]
    e_count = 10
    _pickle_vars=['bodies']
    def __init__(self):
        super(SphereStack, self).__init__()
        sd=box2d.b2PolygonDef()
        sd.SetAsBox(50.0, 10.0)
        
        bd=box2d.b2BodyDef()
        bd.position = (0.0, -10.0)
        
        ground = self.world.CreateBody(bd)
        ground.CreateShape(sd)
    
        sd=box2d.b2CircleDef()
        sd.radius = 1.0
        sd.density = 1.0
        
        for i in xrange(self.e_count):
            bd=box2d.b2BodyDef()
            bd.position = (0.0, 2.0 + 3.0 * i)
            
            self.bodies.append( self.world.CreateBody(bd) )
            self.bodies[-1].CreateShape(sd)
            self.bodies[-1].SetMassFromShapes()
    
    def Step(self, settings):
        #for body in self.bodies:
        #    print "%g " % body.GetWorldCenter().y,
        #for body in self.bodies:
        #    print "%g " % body.GetLinearVelocity().y,
        #print ""
        
        super(SphereStack, self).Step(settings)
    
if __name__=="__main__":
    main(SphereStack)
