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#include "fsCCollisionWorld.h"
#include <fsCore/fsPoint.h>
#include <fsAppCore/src/fsCEntity.h>
#include "../../fsICollisionFixture.h"
#if defined fsBox2D
#include "fsCCollisionShape.h"
#include "fsCCollisionBody.h"
#else
#endif
using namespace fsNCollision;
fsF32 fsCCollisionWorld::scaleFactorGetDo() const
{
return mScaleFactor;
}
void fsCCollisionWorld::dynamicBodyDestroy(fsICollisionBody* const pBody)
{
mImpl->DestroyBody(dynamic_cast<fsCCollisionBody*>(pBody)->mImpl);
delete pBody;
}
fsCCollisionBody* const fsCCollisionWorld::dynamicBodyCreate(const b2BodyDef& pBodyDef)
{
b2Body* bodyImpl = mImpl->CreateBody(&pBodyDef);
fsCCollisionBody* body = dynamic_cast<fsCCollisionBody*>(fsICollisionBody::create());
body->mImpl = bodyImpl;
return body;
}
void fsCCollisionWorld::fsCContactListener::PreSolve(b2Contact* contact, const b2Manifold* oldManifold)
{
b2WorldManifold worldManifold;
contact->GetWorldManifold(&worldManifold);
b2PointState state1[2], state2[2];
b2GetPointStates(state1, state2, oldManifold, contact->GetManifold());
if (state2[0] == b2_addState)
{
const b2Body* const bodyA = contact->GetFixtureA()->GetBody();
const b2Body* const bodyB = contact->GetFixtureB()->GetBody();
// b2Vec2 point = worldManifold.points[0];
// b2Vec2 vA = bodyA->GetLinearVelocityFromWorldPoint(point);
// b2Vec2 vB = bodyB->GetLinearVelocityFromWorldPoint(point);
// float32 approachVelocity = b2Dot(vB - vA, worldManifold.normal);
// if (approachVelocity > 1.0f)
// {
// }
fsCCollisionWorld* collisionWorldImpl = dynamic_cast<fsCCollisionWorld*>(fsICollisionWorld::instanceGet());
fsSCollisionData d;
if (bodyA->GetUserData())
{
auto it = collisionWorldImpl->mCallbackHandlers.find(contact->GetFixtureA()->GetUserData());
if (it != collisionWorldImpl->mCallbackHandlers.end())
{
d.mHit = static_cast<fsCEntity*>(contact->GetFixtureB()->GetUserData());
(*it).second(d, nullptr);
}
}
if (bodyB->GetUserData())
{
auto it = collisionWorldImpl->mCallbackHandlers.find(contact->GetFixtureB()->GetUserData());
if (it != collisionWorldImpl->mCallbackHandlers.end())
{
d.mHit = static_cast<fsCEntity*>(contact->GetFixtureA()->GetUserData());
(*it).second(d, nullptr);
}
}
}
}
fsICollisionBody* fsCCollisionWorld::dynamicBodyCreate(fsCEntity* const pParent, fsICollisionFixture* pFixture, fsICollisionBody::eTYPE pType, const fsPoint& pStartPos)
{
b2BodyDef bodyDef;
bodyDef.userData = static_cast<void*>(pParent);
bodyDef.type = pType == fsICollisionBody::eTYPE::DYNAMIC ? b2_dynamicBody : b2_staticBody;
#if defined fsPLATFORM_CX
bodyDef.position.Set(pStartPos.x / mScaleFactor, -pStartPos.y / mScaleFactor);
#else
bodyDef.position.Set(pStartPos.x / mScaleFactor, pStartPos.y / mScaleFactor);
#endif
fsCCollisionBody* const body = dynamicBodyCreate(bodyDef);
b2FixtureDef fixtureDef;
fixtureDef.shape = dynamic_cast<const fsCCollisionShape*>(pFixture->collisionShapeGet())->mImpl;
if (fsICollisionBody::eTYPE::DYNAMIC == pType)
{
fixtureDef.density = pFixture->densityGet();
fixtureDef.friction = pFixture->frictionGet();
}
fixtureDef.userData = static_cast<void*>(pParent);
body->mImpl->CreateFixture(&fixtureDef);
return body;
}
void fsCCollisionWorld::renderDo()
{
mImpl->DrawDebugData();
mDebug->Flush();
}
void fsCCollisionWorld::updateDo()
{
// Prepare for simulation. Typically we use a time step of 1/60 of a
// second (60Hz) and 10 iterations. This provides a high quality simulation
// in most game scenarios.
float32 timeStep = 1.0f / 60.0f;
int32 velocityIterations = 6;
int32 positionIterations = 2;
mImpl->Step(timeStep, velocityIterations, positionIterations);
}
fsCCollisionWorld::fsCCollisionWorld():
mScaleFactor(115.0f)
{
mDebug = new DebugDraw();
mDebug->Create();
b2Vec2 gravity(0.0f, 10.0f);
mImpl = new b2World(gravity);
b2BodyDef groundBodyDef;
groundBodyDef.position.Set(0.0f, 300.0f / mScaleFactor);
groundBodyDef.userData = static_cast<void*>(this);
b2Body* groundBody = mImpl->CreateBody(&groundBodyDef);
b2PolygonShape groundBox;
groundBox.SetAsBox(500.0f / mScaleFactor, 10.0f / mScaleFactor);
groundBody->CreateFixture(&groundBox, 0.0f);
mImpl->SetDebugDraw(mDebug);
mDebug->SetFlags(b2Draw::e_shapeBit /*| b2Draw::e_centerOfMassBit*/);
mContactListener = new fsCContactListener();<--- Class 'fsCCollisionWorld' does not have a copy constructor which is recommended since it has dynamic memory/resource management.<--- Class 'fsCCollisionWorld' does not have a operator= which is recommended since it has dynamic memory/resource management.
mImpl->SetContactListener(mContactListener);
}
fsCCollisionWorld::~fsCCollisionWorld()
{
delete mContactListener;
delete mImpl;
mDebug->Destroy();
delete mDebug;
}
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