Java box2d中的不正确碰撞

我正在开发一个游戏，用户必须打一个高速球。为了击球，我使用旋转关节将一个长方形物体与演员连接起来，并启用其电机，以指定的速度（电机速度）旋转。现在一切都很完美，但有时当球的速度很高时，它会绕过直肠体。使用碰撞列表器，我发现碰撞正在发生，但碰撞后球并没有被反射。 由于这只发生在球处于高速时，所以碰撞物体的密度是bcoz。或者是负责它的旋转关节的马达？？我是不是遗漏了什么

这是两个机构的代码

//矩形体法

public Body createRectangleBodyPart(float x, float y, float width,
        float height, short groupIndex) {
    PolygonShape shape = new PolygonShape();
    shape.setAsBox(width*WORLD_TO_BOX, height*WORLD_TO_BOX);
    MassData massData = new MassData();
    massData.mass = 15;
    BodyDef bodyDef = new BodyDef();
    bodyDef.type = BodyType.KinematicBody;
    bodyDef.position.y = y*WORLD_TO_BOX;
    bodyDef.position.x = x*WORLD_TO_BOX;
     body = world.createBody(bodyDef);
    body.setMassData(massData);
    FixtureDef fixtureDef = new FixtureDef();
    fixtureDef.shape = shape;
    fixtureDef.density = 1;
    fixtureDef.friction = 100f;
    fixtureDef.restitution = 0.5f;
    fixtureDef.filter.groupIndex=groupIndex;
    body.createFixture(fixtureDef);
    shape.dispose();
    return body;
}

//球体成形方法

    public Body createRoundBodyPart2(float x, float y, float radius,
        short groupIndex, float density, int mass) {

    CircleShape shape = new CircleShape();
    shape.setPosition(new Vector2(0, 0));
    shape.setRadius(radius*WORLD_TO_BOX ); // *18
    BodyDef bodyDef = new BodyDef();
    bodyDef.type = BodyType.DynamicBody;
    bodyDef.position.y = y*WORLD_TO_BOX;
    bodyDef.position.x = x*WORLD_TO_BOX;
    MassData massData = new MassData();
    massData.mass = 8;
    Body body = world.createBody(bodyDef);
    body.setMassData(massData);
    FixtureDef fixtureDef = new FixtureDef();
    fixtureDef.shape = shape;
    fixtureDef.density = 0.5f;
    fixtureDef.restitution=0.007f;
    fixtureDef.filter.groupIndex = groupIndex;
    body.createFixture(fixtureDef);
    shape.dispose();
    return body;
}

---

你有没有试过利用这些特性：密度、摩擦力和恢复力

球可能移动得太快，以至于在与长方形物体碰撞时，球的力对rec物体来说太大。这意味着rec主体无法阻止球，这就是它通过rec主体的原因

---

只是一个猜测。

你有没有尝试过利用这些特性：密度、摩擦力和恢复力

球可能移动得太快，以至于在与长方形物体碰撞时，球的力对rec物体来说太大。这意味着rec主体无法阻止球，这就是它通过rec主体的原因

---

只是一个猜测。

试着在你的球身上使用

isBullet=true

属性

试着在你的球身上使用

isBullet=true

属性

是的，我尽了我最大的努力来处理这些身体的恢复、密度和质量，但每次都失败了。通过如上所述设置isBullet=true修复了该问题。不管怎样，谢谢你。我尽了我最大的努力去恢复这些身体的密度和质量，但每次都失败了。通过如上所述设置isBullet=true修复了该问题。谢谢你

    public Body createRoundBodyPart2(float x, float y, float radius,
        short groupIndex, float density, int mass) {

    CircleShape shape = new CircleShape();
    shape.setPosition(new Vector2(0, 0));
    shape.setRadius(radius*WORLD_TO_BOX ); // *18
    BodyDef bodyDef = new BodyDef();
    bodyDef.type = BodyType.DynamicBody;
    bodyDef.position.y = y*WORLD_TO_BOX;
    bodyDef.position.x = x*WORLD_TO_BOX;
    MassData massData = new MassData();
    massData.mass = 8;
    Body body = world.createBody(bodyDef);
    body.setMassData(massData);
    FixtureDef fixtureDef = new FixtureDef();
    fixtureDef.shape = shape;
    fixtureDef.density = 0.5f;
    fixtureDef.restitution=0.007f;
    fixtureDef.filter.groupIndex = groupIndex;
    body.createFixture(fixtureDef);
    shape.dispose();
    return body;
}