void Bullet::update(float deltatime)
{
Vector2D newLocation = this->getLocation() + deltatime * this->speed * Vector2D(this->getRotation());
WARN_IF(!this->getOwnerWorld(), "Not assigned OwnerWorld for bullet");
Vector2D traceLocation(ZERO_VECTOR);
IActor *trasedActor = RayTrace::trace(this->getOwnerWorld(), this->getLocation(), newLocation, &traceLocation);
// if there nothing to hit
if (trasedActor == nullptr)
{
this->setLocation(newLocation);
}
else // bullet is hiting some actor
{
trasedActor->hit(this, 10.f, Vector2D(this->getRotation()) * this->speed * 0.01f);
this->speed = 0.0f;
this->destroy();
}
// bullet will be destroyed after 10 second
if (this->getLifetime() > 10.f)
{
this->destroy();
}
Actor::update(deltatime);
}
void Tracer::trace()
{
if( !scene_ || is_tracing_ )
{
return;
}
startTracing();
const int width = film_->getWidth();
const int height = film_->getHeight();
const double aspect = static_cast< double >( width ) /
static_cast< double >( height );
Logging::log( LogLevel::Info,
"[Tracer] Tracing image with " + std::to_string( width ) +
" x " + std::to_string( height ) + " pixels (w x h) and " +
std::to_string( rays_per_pixel_ ) + " samples per pixel." );
std::thread t( [=]{
#pragma omp parallel for schedule( dynamic, 1 )
for( int samp = 0; samp < rays_per_pixel_; ++samp )
{
for( int y = 0; y < height && is_tracing_; ++y )
{
for( int x = 0; x < width && is_tracing_; ++x )
{
const double x_d = static_cast< double >( x );
const double y_d = static_cast< double >( y );
const double width_d = static_cast< double >( width );
const double height_d = static_cast< double >( height );
const double dx = aspect * ( x_d / width_d - .5 );
const double dy = ( y_d / height_d - .5 );
Color sample = traceLocation( dx, dy );
film_->addSample( x, y, sample );
curr_num_samples_.fetch_add( 1 );
}
}
}
stopTracing();
auto perf_string = std::to_string( getSpeedAsMsamplesPerSec() );
// @TODO cutting away unwanted digits entails wrong rounding
perf_string = perf_string.substr( 0, perf_string.length() - 4 );
Logging::log( LogLevel::Info,
"[Tracer] Generated samples at a rate of " + perf_string +
" Msamples/sec." );
} );
t.detach();
}
