def add_collisionpair_func(self, a, b, func, data=None):
"""Register func to be called when a collision is found between
shapes with collision_type fields that match a and b. Pass None
as func to reject any collision with the given collision type pair.
func(shapeA, shapeB, contacts, normal_coef, data) -> bool
Parameters
shapeA : `Shape`
The first shape
shapeB : `Shape`
The second shape
contacts : [`Contact`]
A list of contacts
normal_coef : float
The normal coefficient
data : any
The data argument sent to the add_collisionpair_func
function
WARNING: It is not safe for collision pair functions to remove or
free shapes or bodies from a space. Doing so will likely end in a
segfault as an earlier collision may already be referencing the shape
or body. You must wait until after the step() function returns.
"""
if func is None:
cp.cpSpaceAddCollisionPairFunc(self._space, a, b, ct.cast(ct.POINTER(ct.c_int)(), cp.cpCollFunc), None)
else:
f = self._get_cf(func, data)
self._callbacks[(a, b)] = f
cp.cpSpaceAddCollisionPairFunc(self._space, a, b, f, None)
def add_collisionpair_func(self, a, b, func, data):
"""Register func to be called when a collision is found between a
shapes with collision_type fields that match a and b. Pass None
as func to reject any collision with the given collision type pair.
func(shapeA, shapeB, contacts, normal_coef, data) -> bool
shapeA, shapeB is the colliding shapes
contacts is a list of contacts
normal_coef is a float :)
data is the data argument sent to the addCollisionPairFunc function
WARNING: It is not safe for collision pair functions to remove or
free shapes or bodies from a space. Doing so will likely end in a
segfault as an earlier collision may already be referencing the shape
or body. You must wait until after the cpSpaceStep() function returns.
"""
def getCF(func):
def CF(cpShapeA, cpShapeB, cpContacts, numContacts, normal_coef,
_data):
### Translate chipmunk shapes to Shapes.
if cpShapeA.contents.id in self._shapes:
shapeA = self._shapes[cpShapeA.contents.id]
else:
shapeA = self._static_shapes[cpShapeA.contents.id]
if cpShapeB.contents.id in self._shapes:
shapeB = self._shapes[cpShapeB.contents.id]
else:
shapeB = self._static_shapes[cpShapeB.contents.id]
return func(
shapeA, shapeB,
[Contact(cpContacts[i])
for i in xrange(numContacts)], normal_coef, data)
return CF
if func is None:
cp.cpSpaceAddCollisionPairFunc(
self._space, a, b,
ct.cast(ct.POINTER(ct.c_int)(), cp.cpCollFunc), None)
else:
f = cp.cpCollFunc(getCF(func))
self._callbacks[(a, b)] = f
cp.cpSpaceAddCollisionPairFunc(self._space, a, b, f, None)
def add_collisionpair_func(self, a, b, func, data):
"""Register func to be called when a collision is found between a
shapes with collision_type fields that match a and b. Pass None
as func to reject any collision with the given collision type pair.
func(shapeA, shapeB, contacts, normal_coef, data) -> bool
shapeA, shapeB is the colliding shapes
contacts is a list of contacts
normal_coef is a float :)
data is the data argument sent to the addCollisionPairFunc function
WARNING: It is not safe for collision pair functions to remove or
free shapes or bodies from a space. Doing so will likely end in a
segfault as an earlier collision may already be referencing the shape
or body. You must wait until after the cpSpaceStep() function returns.
"""
def getCF(func):
def CF (cpShapeA, cpShapeB, cpContacts, numContacts, normal_coef, _data):
### Translate chipmunk shapes to Shapes.
if cpShapeA.contents.id in self._shapes:
shapeA = self._shapes[cpShapeA.contents.id]
else:
shapeA = self._static_shapes[cpShapeA.contents.id]
if cpShapeB.contents.id in self._shapes:
shapeB = self._shapes[cpShapeB.contents.id]
else:
shapeB = self._static_shapes[cpShapeB.contents.id]
return func(shapeA, shapeB, [Contact(cpContacts[i]) for i in xrange(numContacts)], normal_coef, data)
return CF
if func is None:
cp.cpSpaceAddCollisionPairFunc(self._space, a, b, ct.cast(ct.POINTER(ct.c_int)(), cp.cpCollFunc), None)
else:
f = cp.cpCollFunc(getCF(func))
self._callbacks[(a,b)] = f
cp.cpSpaceAddCollisionPairFunc(self._space, a, b, f, None)
