void Particle::integrate(float duration)
{
if (getInverseMass() <= 0.0f)
{
return;
}
assert(duration > 0.0f);
mPosition.addScaledVector(mVelocity, duration);
Vector3 resultingAcc = mAcceleration;
resultingAcc.addScaledVector(mForceAccumulation, getInverseMass());
mVelocity.addScaledVector(resultingAcc, duration);
//mVelocity = mVelocity * powf(mDamping, duration);
clearAccumulator();
}
void GravityForceGenerator::update(floatType timeDelta_ms) {
//iterate over the list of collision components
for (auto collisionComponent : this->getRegisteredComponents()) {
auto physicsComponent = collisionComponent->getPhysicsRelation();
if (physicsComponent == nullptr) {
continue;
}
//don't calculate if it doesn't have a finite mass
const floatType inverseMass = physicsComponent->getInverseMass();
if (inverseMass <= 0) {
continue;
}
physicsComponent->addForce(this->gravity * inverseMass);
}
}
