如何防止球粘在Box2D中的墙壁上? [英] How can I prevent a ball from sticking to walls in Box2D?

问题描述

我正在尝试box2d. 我似乎遇到了一个被人们描述为粘墙的问题

I'm experimenting with box2d. I seem to have a problem people describe as sticky walls

我有一个球和一个球拍

我使用的是我能找到的所有推荐的基本磅秤，即10m世界，1m球

I'm using all the basic recommended scales I could find, 10m world, 1m ball

该球具有以下属性:

shape: circle (.5f radius)
size: 1.0f
density: 1.0f
restitution: 1.0f
friction: 0.0f

用于移动球的球拍为1.5m，它具有以下属性: 形状:

The paddle used to move the ball is 1.5m, it has the following properties: shape:

circle (.75f radius)
size: 1.5f
density: 10.0f
restitution: 0.1f
friction: 0.0f

如您所见，所有物体的摩擦力均为0.

As you see the friction is 0 for all objects.

球不断被卡住沿墙滚动或完全卡在90度角上

The ball constantly gets stuck rolling along a wall or completely jammed in the 90 degree corners

我本以为我可以检测到与墙壁的碰撞并触发applyLinearImpulse将球移离墙壁.

I was thinking I could detect a collision with a wall and trigger an applyLinearImpulse to move the ball off the wall.

推荐答案

您需要降低弹性碰撞的最小速度阈值.

You need to reduce the minimum velocity threshold for elastic collisions.

通过减少 b2Settings :: b2_velocityThreshold 接近0.

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