double angle = 2 * Math.PI / numDecor;
for (int i = 0; i < numDecor; i++) {
double fx = Math.cos(i * angle);
double fy = Math.sin(i * angle);
world
.addEntity(new Exhaust(world, x + fx * entityRadius, y + fy
* entityRadius, fx * decorationSpeed, fy
* decorationSpeed));
}
}