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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# C++ version Copyright (c) 2006-2007 Erin Catto http://www.box2d.org
# Python version Copyright (c) 2010 kne / sirkne at gmail dot 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 math import cos, sin
from .framework import (Framework, main)
from Box2D import (b2CircleShape, b2EdgeShape, b2FixtureDef, b2PolygonShape,
b2_pi)
class CharacterCollision(Framework):
name = "Character Collision"
description = ("This tests various character collision shapes.\n"
"Limitation: Square and hexagon can snag on aligned boxes.\n"
"Feature: Loops have smooth collision, inside and out."
)
def __init__(self):
super(CharacterCollision, self).__init__()
ground = self.world.CreateStaticBody(
position=(0, 0),
shapes=b2EdgeShape(vertices=[(-20, 0), (20, 0)])
)
# Collinear edges
self.world.CreateStaticBody(
shapes=[b2EdgeShape(vertices=[(-8, 1), (-6, 1)]),
b2EdgeShape(vertices=[(-6, 1), (-4, 1)]),
b2EdgeShape(vertices=[(-4, 1), (-2, 1)]),
]
)
# Square tiles
self.world.CreateStaticBody(
shapes=[b2PolygonShape(box=[1, 1, (4, 3), 0]),
b2PolygonShape(box=[1, 1, (6, 3), 0]),
b2PolygonShape(box=[1, 1, (8, 3), 0]),
]
)
# Square made from an edge loop. Collision should be smooth.
body = self.world.CreateStaticBody()
body.CreateLoopFixture(vertices=[(-1, 3), (1, 3), (1, 5), (-1, 5)])
# Edge loop.
body = self.world.CreateStaticBody(position=(-10, 4))
body.CreateLoopFixture(vertices=[
(0.0, 0.0), (6.0, 0.0),
(6.0, 2.0), (4.0, 1.0),
(2.0, 2.0), (0.0, 2.0),
(-2.0, 2.0), (-4.0, 3.0),
(-6.0, 2.0), (-6.0, 0.0), ]
)
# Square character 1
self.world.CreateDynamicBody(
position=(-3, 8),
fixedRotation=True,
allowSleep=False,
fixtures=b2FixtureDef(shape=b2PolygonShape(
box=(0.5, 0.5)), density=20.0),
)
# Square character 2
body = self.world.CreateDynamicBody(
position=(-5, 5),
fixedRotation=True,
allowSleep=False,
)
body.CreatePolygonFixture(box=(0.25, 0.25), density=20.0)
# Hexagon character
a = b2_pi / 3.0
self.world.CreateDynamicBody(
position=(-5, 8),
fixedRotation=True,
allowSleep=False,
fixtures=b2FixtureDef(
shape=b2PolygonShape(
vertices=[(0.5 * cos(i * a), 0.5 * sin(i * a))
for i in range(6)]),
density=20.0
),
)
# Circle character
self.world.CreateDynamicBody(
position=(3, 5),
fixedRotation=True,
allowSleep=False,
fixtures=b2FixtureDef(
shape=b2CircleShape(radius=0.5),
density=20.0
),
)
def Step(self, settings):
super(CharacterCollision, self).Step(settings)
pass
if __name__ == "__main__":
main(CharacterCollision)
|
