Question

我正在开发一种用户必须击中高速球的游戏。为了击球，我加入了一个长方体，演员使用旋转关节并启用其电机，以指定的速度（电机速度）旋转它。现在一切都很完美，但有时当球的速度很高时，它绕过了直肠体。使用碰撞列表器我发现碰撞正在发生，但碰撞后球没有反射。因为只有当球高速行驶时才会发生这种情况，是否是碰撞的物体密度的bcoz。或者它的旋转关节电机是谁？我在这里错过了什么吗？

以下是两个机构的代码

//矩形体的方法

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;
}

Answer 1

尝试在球体上使用isBullet=true属性

Answer 2

您是否尝试过使用这些属性：密度，摩擦力和恢复原状。

球可以移动得如此之快，以至于在与矩形体撞击时，球的力量对于身体来说是高的。这意味着球体不能被球体阻挡，这就是它通过它的原因。

只是一个猜测。

在box2d中没有正确的碰撞

2 个答案: