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#!/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 *
import math
class PolyShapes (Framework):
name="PolyShapes"
bodyIndex=0
bodies=[]
sds=[]
circleDef=None
_pickle_vars=['bodies']
def __init__(self):
super(PolyShapes, self).__init__()
# Ground body
sds = self.sds
sd=box2d.b2PolygonDef()
sd.SetAsBox(50.0, 10.0)
sd.friction = 0.3
for i in range(4):
sds.append(box2d.b2PolygonDef())
bd=box2d.b2BodyDef()
bd.position = (0.0, -10.0)
ground = self.world.CreateBody(bd)
ground.CreateShape(sd)
sds[0].vertexCount = 3
sds[0].setVertex(0,-0.5, 0.0)
sds[0].setVertex(1,0.5, 0.0)
sds[0].setVertex(2,0.0, 1.5)
sds[0].density = 1.0
sds[0].friction = 0.3
sds[1].vertexCount = 3
sds[1].setVertex(0,-0.1, 0.0)
sds[1].setVertex(1,0.1, 0.0)
sds[1].setVertex(2,0.0, 1.5)
sds[1].density = 1.0
sds[1].friction = 0.3
sds[2].vertexCount = 8
w = 1.0
b = w / (2.0 + math.sqrt(2.0))
s = math.sqrt(2.0) * b
sds[2].setVertex(0,0.5 * s, 0.0)
sds[2].setVertex(1,0.5 * w, b)
sds[2].setVertex(2,0.5 * w, b + s)
sds[2].setVertex(3,0.5 * s, w)
sds[2].setVertex(4,-0.5 * s, w)
sds[2].setVertex(5,-0.5 * w, b + s)
sds[2].setVertex(6,-0.5 * w, b)
sds[2].setVertex(7,-0.5 * s, 0.0)
sds[2].density = 1.0
sds[2].friction = 0.3
sds[3].SetAsBox(0.5, 0.5)
#sds[3].vertexCount = 4
#sds[3].setVertex(0,-0.5, 0.0)
#sds[3].setVertex(1,0.5, 0.0)
#sds[3].setVertex(2,0.5, 1.0)
#sds[3].setVertex(3,-0.5, 1.0)
sds[3].density = 1.0
sds[3].friction = 0.3
self.circleDef=box2d.b2CircleDef()
self.circleDef.radius = 0.5
self.circleDef.density = 1.0
self.bodyIndex = 0
def Create(self, index):
bd=box2d.b2BodyDef()
x = box2d.b2Random(-2.0, 2.0)
bd.position = (x, 10.0)
bd.angle = box2d.b2Random(-box2d.b2_pi, box2d.b2_pi)
if index == 4:
bd.angularDamping = 0.02
self.bodies.append(self.world.CreateBody(bd) )
if index < 4:
self.bodies[-1].CreateShape(self.sds[index])
else:
self.bodies[-1].CreateShape(self.circleDef)
self.bodies[-1].SetMassFromShapes()
def DestroyBody(self):
for body in self.bodies:
self.bodies.remove(body)
self.world.DestroyBody(body)
return
def Keyboard(self, key):
if key==K_1 or key==K_2 or key==K_3 or key==K_4 or key==K_5:
self.Create(key - K_1)
elif key==K_d:
self.DestroyBody()
def Step(self, settings):
super(PolyShapes, self).Step(settings)
self.DrawStringCR("Press 1-5 to drop stuff")
if __name__=="__main__":
main(PolyShapes)
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