void PhysicsManager::beforeSimulation(Node *node)
{
auto iter = _owners.find(node);
if (iter != _owners.end())
{
auto component = iter->second;
component->beforeSimulation();
}
for (auto child : node->getChildren())
beforeSimulation(child);
}
void PhysicsWorld::beforeSimulation(Node *node, const Mat4& parentToWorldTransform, float nodeParentScaleX, float nodeParentScaleY, float parentRotation)
{
auto scaleX = nodeParentScaleX * node->getScaleX();
auto scaleY = nodeParentScaleY * node->getScaleY();
auto rotation = parentRotation + node->getRotation();
auto nodeToWorldTransform = parentToWorldTransform * node->getNodeToParentTransform();
auto physicsBody = node->getPhysicsBody();
if (physicsBody)
{
physicsBody->beforeSimulation(parentToWorldTransform, nodeToWorldTransform, scaleX, scaleY, rotation);
}
for (auto child : node->getChildren())
beforeSimulation(child, nodeToWorldTransform, scaleX, scaleY, rotation);
}
void PhysicsWorld::update(float delta, bool userCall/* = false*/)
{
if(!_delayAddBodies.empty())
{
updateBodies();
}
else if (!_delayRemoveBodies.empty())
{
updateBodies();
}
auto sceneToWorldTransform = _scene->getNodeToParentTransform();
beforeSimulation(_scene, sceneToWorldTransform, 1.f, 1.f, 0.f);
if (!_delayAddJoints.empty() || !_delayRemoveJoints.empty())
{
updateJoints();
}
if (delta < FLT_EPSILON)
{
return;
}
if (userCall)
{
cpSpaceStep(_cpSpace, delta);
}
else
{
_updateTime += delta;
if (++_updateRateCount >= _updateRate)
{
const float dt = _updateTime * _speed / _substeps;
for (int i = 0; i < _substeps; ++i)
{
cpSpaceStep(_cpSpace, dt);
}
_updateRateCount = 0;
_updateTime = 0.0f;
}
}
if (_debugDrawMask != DEBUGDRAW_NONE)
{
debugDraw();
}
// Update physics position, should loop as the same sequence as node tree.
// PhysicsWorld::afterSimulation() will depend on the sequence.
afterSimulation(_scene, sceneToWorldTransform, 0.f);
}
void PhysicsManager::update(float dt)
{
// Update physics position, should loop as the same sequence as node tree.
// ComponentPhysics2d::beforeSimulation() will depend on the sequence.
beforeSimulation(_scene);
// do simulation
_physicsWorld->update(dt, false);
// Update physics position, should loop as the same sequence as node tree.
// ComponentPhysics2d::afterSimulation() will depend on the sequence.
afterSimulation(_scene);
}
void PhysicsWorld::update(float delta, bool userCall/* = false*/)
{
if(!_delayAddBodies.empty())
{
updateBodies();
}
else if (!_delayRemoveBodies.empty())
{
updateBodies();
}
auto sceneToWorldTransform = _scene->getNodeToParentTransform();
beforeSimulation(_scene, sceneToWorldTransform, 1.f, 1.f, 0.f);
if (!_delayAddJoints.empty() || !_delayRemoveJoints.empty())
{
updateJoints();
}
if (delta < FLT_EPSILON)
{
return;
}
if (userCall)
{
#if CC_TARGET_PLATFORM == CC_PLATFORM_WINRT || CC_TARGET_PLATFORM == CC_PLATFORM_WIN32
cpSpaceStep(_cpSpace, delta);
#else
cpHastySpaceStep(_cpSpace, delta);
#endif
}
else
{
_updateTime += delta;
if(_fixedRate)
{
const float step = 1.0f / _fixedRate;
const float dt = step * _speed;
while(_updateTime>step)
{
_updateTime-=step;
#if CC_TARGET_PLATFORM == CC_PLATFORM_WINRT || CC_TARGET_PLATFORM == CC_PLATFORM_WIN32
cpSpaceStep(_cpSpace, dt);
#else
cpHastySpaceStep(_cpSpace, dt);
#endif
}
}
else
{
if (++_updateRateCount >= _updateRate)
{
const float dt = _updateTime * _speed / _substeps;
for (int i = 0; i < _substeps; ++i)
{
#if CC_TARGET_PLATFORM == CC_PLATFORM_WINRT || CC_TARGET_PLATFORM == CC_PLATFORM_WIN32
cpSpaceStep(_cpSpace, dt);
#else
cpHastySpaceStep(_cpSpace, dt);
#endif
for (auto& body : _bodies)
{
body->update(dt);
}
}
_updateRateCount = 0;
_updateTime = 0.0f;
}
}
}
if (_debugDrawMask != DEBUGDRAW_NONE)
{
debugDraw();
}
// Update physics position, should loop as the same sequence as node tree.
// PhysicsWorld::afterSimulation() will depend on the sequence.
afterSimulation(_scene, sceneToWorldTransform, 0.f);
}
