AssertionError: The shape's body must be added to the space before (or at the same time) as the-CodePudding

I am trying to make a game, which includes polygons in pymunk, and to be able to do that in pymunk I decided to use many segments and draw it as a solid polygon. When I implement the code im getting an error

My code

class StaticPoly:
    def __init__(self, space, pos, elasticity=1, collision_type=None):
        self.bodies = []
        self.shapes = []
        self.pos = pos
        for i in list(range(0, len(self.pos) - 1)) [-1]:
            print(i)
            self.bodies.append(pymunk.Body(body_type=pymunk.Body.STATIC))
            self.shapes.append(pymunk.Segment(self.bodies[i], self.pos[i], self.pos[i   1], 1))
            self.shapes[i].elasticity = elasticity
            space.add(self.shapes[i])
            if collision_type:
                self.shapes[i].collision_type = collision_type

ERROR:

Traceback (most recent call last):
  File *path*, line 33, in <module>
    catch = StaticPoly(space, ((0, 100), (100, 101), (0, 0)))
  File *path again*, line 37, in __init__
    space.add(self.shapes[i])
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pymunk/space.py", line 401, in add
    self._add_shape(o)
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pymunk/space.py", line 441, in _add_shape
    assert (
AssertionError: The shape's body must be added to the space before (or at the same time) as the shape.

CodePudding user response：

StaticPoly.bodies contains pymunk.Bodys. These bodies must also be added to the space.

Reed the error message:

The shape's body must be added to the space before (or at the same time) as the shape.

Either before

space.add(self.bodies[i])
space.add(self.shapes[i])

or at the same time

space.add(self.bodies[i], self.shapes[i])