def resolve_collision(collision_detection, gravity, bodies):
if collision_detection.is_set():
for ci in range(len(collision_detection.particles(0))):
encountering_particles = Particles(particles=[collision_detection.particles(0)[ci],
collision_detection.particles(1)[ci]])
colliding_particles = encountering_particles.get_intersecting_subset_in(bodies)
merge_two_particles(bodies, colliding_particles)
bodies.synchronize_to(gravity.particles)
def resolve_collision(collision_detection, gravity_code, bodies, time):
print("Well, we have an actual collision between two or more objects.")
print("This happened at time=", time.in_(units.yr))
for ci in range(len(collision_detection.particles(0))): # Multiple pairs of collisions could take place in one timestep
encountering_particles = Particles(particles=[collision_detection.particles(0)[ci],
collision_detection.particles(1)[ci]])
colliding_objects = encountering_particles.get_intersecting_subset_in(bodies)
merge_two_bodies(bodies, colliding_objects)
bodies.synchronize_to(gravity_code.particles) # Update bodies to contain 1 particle instead of 2