断言错误：必须在形状之前（或同时）将形状的主体添加到空间中

Question

我正在尝试制作一个游戏，其中包含 pymunk 中的多边形，为了能够在 pymunk 中做到这一点，我决定使用许多段并将其绘制为实心多边形。 当我执行代码时出现错误

我的代码

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

错误：

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.

Answer 1

StaticPoly.bodies包含pymunk.Body s。 这些实体也必须添加到空间中。

Reed 错误信息：

形状的主体必须在添加到形状之前（或同时）添加到空间中。

无论是之前

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

或同时

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