c++ - 花栗鼠碰撞太软

Question

我是 cocos2d 物理学的新手。我正在使用花栗鼠，当两个物体碰撞时，它只是“柔软”，就像它们是由海绵或橡胶制成的一样。

我的代码:

cpInitChipmunk();  
space = cpSpaceNew();  
space->gravity = cpv(0, 0);  
schedule(schedule_selector(HelloWorld::step), 1.0f/60.f);
astroBody = cpBodyNew(100, INFINITY);  
astroBody->p = cpv(512,384);
cpSpaceAddBody(space, astroBody);
int num2 = 8;
cpVect vertsAstro[] =  {
    cpv(-17.0f, -44.9f),
    cpv(-29.5f, -33.2f),
    cpv(-32.9f, -13.1f),
    cpv(-24.0f, 11.7f),
    cpv(24.6f, 11.5f),
    cpv(32.9f, -12.9f),
    cpv(29.3f, -33.1f),
    cpv(17.0f, -44.7f)
};
astroShape = cpPolyShapeNew(astroBody, num2, vertsAstro, cpv(0,0));
astroShape->e = 0.0f;
astroShape->u = 0.0f;
astroShape->collision_type = 0; 
astroShape->data = player;
cpSpaceAddShape(space, astroShape);

cpBody *box = cpBodyNew(INFINITY, INFINITY);  
box->p = cpv(z->getPosition().x+32, z->getPosition().y+32); 
int num = 5;
cpVect verts[] = {
    cpv(-32, -32),
    cpv(-32, 32),
    cpv(32, 32),
    cpv(32, -32),
    cpv(-32, -32)
};
cpShape *boxShape = cpPolyShapeNew(box, num, verts, cpv(0,0));
boxShape->e = 0.0f;
boxShape->u = 0.0f;
boxShape->collision_type = 1;  
boxShape->data = z;
cpSpaceAddStaticShape(space, boxShape);

所以这些物体在碰撞，而且太软了。我能以某种方式让它看起来像两 block 石头互相撞击吗？

Answer 1

您必须使用 Chipmunk 5。您需要直接设置字段，例如 shape->e = 1.0。

getter/setter 函数是 Chipmunk 6 的一部分。您仍然可以直接设置字段，但建议不要这样做，因为 setter 函数会在更改值时自动唤醒对象。