def __init__(self, body, vertices, offset=(0,0), auto_order_vertices=True):
"""Create a polygon
body : `Body`
The body to attach the poly to
vertices : [(x,y)] or [`Vec2d`]
Define a convex hull of the polygon with a counterclockwise
winding.
offset : (x,y) or `Vec2d`
The offset from the body's center of gravity in body local
coordinates.
auto_order_vertices : bool
Set to True to automatically order the vertices. If you know
the vertices are in the correct (clockwise) orded you can gain
a little performance by setting this to False.
"""
self._body = body
self.offset = offset
#self.verts = (Vec2d * len(vertices))(*vertices)
self.verts = (Vec2d * len(vertices))
self.verts = self.verts(Vec2d(0, 0))
i_vs = enumerate(vertices)
if auto_order_vertices and not u.is_clockwise(vertices):
i_vs = zip(xrange(len(vertices)-1, -1, -1), vertices)
for (i, vertex) in i_vs:
self.verts[i].x = vertex[0]
self.verts[i].y = vertex[1]
self._shape = cp.cpPolyShapeNew(body._body, len(vertices), self.verts, offset)
self._shapecontents = self._shape.contents
def __init__(self, body, vertices, offset=(0,0), auto_order_vertices=False):
"""Create a polygon
body : `Body`
The body to attach the poly to
vertices : [(x,y)] or [`Vec2d`]
Define a convex hull of the polygon with a counterclockwise
winding.
offset : (x,y) or `Vec2d`
The offset from the body's center of gravity in body local
coordinates.
auto_order_vertices : bool
Set to True to automatically order the vertices. Currently
not supported.
"""
if auto_order_vertices:
raise Exception(NotImplemented)
self._body = body
self.offset = offset
#self.verts = (Vec2d * len(vertices))(*vertices)
self.verts = (Vec2d * len(vertices))
self.verts = self.verts(Vec2d(0, 0))
for (i, vertex) in enumerate(vertices):
self.verts[i].x = vertex[0]
self.verts[i].y = vertex[1]
self._shape = cp.cpPolyShapeNew(body._body, len(vertices), self.verts, offset)
self._shapecontents = self._shape.contents
def create_cube(space, mass=5.0, xy=(0, 0)):
p_num = 4
P_ARR = vec2d * p_num
p_arr = P_ARR(vec2d(0, 0))
s = 5
sprite = rabbyt.Sprite(shape=(-s, s, s, -s), xy=xy)
for i, p in enumerate(sprite.shape):
p_arr[i].x, p_arr[i].y = p
moment = 500
body = cp.cpBodyNew(mass, moment)
body.contents.p = vec2d(*xy)
cp.cpSpaceAddBody(space, body)
shape = cp.cpPolyShapeNew(body, p_num, p_arr, vec2d(0, 0))
shape.contents.u = 0.5
shape.contents.collision_type = COLLTYPE_DEFAULT
cp.cpSpaceAddShape(space, shape)
anims = chipmunk_body_anims(body)
sprite.x, sprite.y, sprite.rot = anims
return shape, sprite
def create_cube(space, mass = 5.0, xy = (0,0)):
p_num = 4
P_ARR = vec2d * p_num
p_arr = P_ARR(vec2d(0,0))
s = 5
sprite = rabbyt.Sprite(shape=(-s,s,s,-s), xy=xy)
for i, p in enumerate(sprite.shape):
p_arr[i].x, p_arr[i].y = p
moment = 500
body = cp.cpBodyNew(mass, moment)
body.contents.p = vec2d(*xy)
cp.cpSpaceAddBody(space, body)
shape = cp.cpPolyShapeNew(body, p_num, p_arr, vec2d(0,0))
shape.contents.u = 0.5
shape.contents.collision_type = COLLTYPE_DEFAULT
cp.cpSpaceAddShape(space, shape)
anims = chipmunk_body_anims(body)
sprite.x, sprite.y, sprite.rot = anims
return shape, sprite
def __init__(self, space, mass, width, height, pos, color=(255,0,0,255)):
poly = [
[ width/2, height/2 ],
[ width/2, -height/2 ],
[ -width/2, -height/2 ],
[ -width/2, height/2 ],
]
p_num = len(poly)
P_ARR = vec2d * p_num
p_arr = P_ARR(vec2d(0,0))
for i, (x,y) in enumerate( poly ):
p_arr[i].x = x
p_arr[i].y = y
moment = cp.cpMomentForPoly( mass, p_num, p_arr, vec2d(0,0))
self.color = color
self.body = cp.cpBodyNew( mass, moment )
self.body.contents.p = vec2d( *pos )
cp.cpSpaceAddBody( space, self.body )
self.shape = shape = cp.cpPolyShapeNew(
self.body, p_num, p_arr, vec2d(0,0)
)
shape.contents.u = 0.5
cp.cpSpaceAddShape(space, shape)
