void PhysicsBody::removeAllShapes(bool reduceMassAndMoment/* = true*/)
{
for (auto& child : _shapes)
{
PhysicsShape* shape = dynamic_cast<PhysicsShape*>(child);
// deduce the area, mass and moment
// area must update before mass, because the density changes depend on it.
if (reduceMassAndMoment)
{
_area -= shape->getArea();
addMass(-shape->getMass());
addMoment(-shape->getMoment());
}
if (_world)
{
_world->removeShape(shape);
}
// set shape->_body = nullptr make the shape->setBody will not trigger the _body->removeShape function call.
shape->_body = nullptr;
shape->setBody(nullptr);
}
_shapes.clear();
}
void PhysicsBody::removeShape(PhysicsShape* shape, bool reduceMassAndMoment/* = true*/)
{
if (_shapes.getIndex(shape) != -1)
{
// deduce the area, mass and moment
// area must update before mass, because the density changes depend on it.
if (reduceMassAndMoment)
{
_area -= shape->getArea();
addMass(-shape->getMass());
addMoment(-shape->getMoment());
}
//remove
if (_world)
{
_world->removeShape(shape);
}
// set shape->_body = nullptr make the shape->setBody will not trigger the _body->removeShape function call.
shape->_body = nullptr;
shape->setBody(nullptr);
_shapes.eraseObject(shape);
}
}
PhysicsShape* PhysicsBody::addShape(PhysicsShape* shape, bool addMassAndMoment/* = true*/)
{
if (shape == nullptr) return nullptr;
// add shape to body
if (_shapes.getIndex(shape) == -1)
{
shape->setBody(this);
// calculate the area, mass, and density
// area must update before mass, because the density changes depend on it.
if (addMassAndMoment)
{
_area += shape->getArea();
addMass(shape->getMass());
addMoment(shape->getMoment());
}
if (_world && cpBodyGetSpace(_cpBody))
{
_world->addShape(shape);
}
_shapes.pushBack(shape);
}
return shape;
}
void PhysicsBody::setScale(float scaleX, float scaleY)
{
for (auto& shape : _shapes)
{
_area -= shape->getArea();
if (!_massSetByUser)
addMass(-shape->getMass());
if (!_momentSetByUser)
addMoment(-shape->getMoment());
shape->setScale(scaleX, scaleY);
_area += shape->getArea();
if (!_massSetByUser)
addMass(shape->getMass());
if (!_momentSetByUser)
addMoment(shape->getMoment());
}
}
void PhysicsBody::removeShape(PhysicsShape* shape)
{
auto it = std::find(_shapes.begin(), _shapes.end(), shape);
if (it != _shapes.end())
{
// deduce the area, mass and moment
// area must update before mass, because the density changes depend on it.
_area -= shape->getArea();
addMass(-shape->getMass());
addMoment(-shape->getMoment());
//remove
if (_world)
{
_world->removeShape(shape);
}
_shapes.erase(it);
shape->setBody(nullptr);
shape->release();
}
}
void Game2::createtrap(double x, double y, double z, std::string name){
//create trap
Trap *_trampa = Trap::create();
_trampa->setPosition3D(Vec3(x, y, z));
_trampa->setName(name);
_trampas->addObject(_trampa);
//create body
auto _body = PhysicsBody::createEdgeBox(Size(35, 20), PhysicsMaterial(10, 0, 0.9f), 1.0, Vec2(-5, 10));
_body->setContactTestBitmask(true);
_body->setDynamic(false);
_body->setRotationEnable(false);
_body->addMass(30.0);
_body->addMoment(2.0);
_body->setLinearDamping(0.8f);
_trampa->setPhysicsBody(_body);
addChild(_trampa);
}
void PhysicsBody::addShape(PhysicsShape* shape)
{
if (shape == nullptr) return;
// add shape to body
if (std::find(_shapes.begin(), _shapes.end(), shape) == _shapes.end())
{
shape->setBody(this);
_shapes.push_back(shape);
// calculate the area, mass, and desity
// area must update before mass, because the density changes depend on it.
_area += shape->getArea();
addMass(shape->getMass());
addMoment(shape->getMoment());
if (_world != nullptr)
{
_world->addShape(shape);
}
shape->retain();
}
}
void Game2::createplatform(double x, double y, double z, double scale, double bodyscalex, double bodyscaley, double xoffset, double yoffset, std::string name){
//create platform
Platform *_plataforma = Platform::create();
_plataforma->setScaleX(scale);
_plataforma->setScaleY(10);
_plataforma->setName(name);
_plataforma->setPosition3D(Vec3(x, y, z));
_plataformas->addObject(_plataforma);
//create body
auto _body = PhysicsBody::createEdgeBox(Size(bodyscalex, bodyscaley), PhysicsMaterial(10, 0, 0.9f), 1.0, Vec2(xoffset, yoffset));
_body->setContactTestBitmask(true);
_body->setDynamic(false);
_body->setRotationEnable(false);
_body->addMass(30.0);
_body->addMoment(2.0);
_body->setLinearDamping(0.8f);
_plataforma->setPhysicsBody(_body);
addChild(_plataforma);
}
