localecs=crystal.ECS:new();ecs:add_system(crystal.PhysicsSystem);localhero=ecs:spawn(crystal.Entity);hero:add_component(crystal.Body);hero:set_position(0,0);localcoin=ecs:spawn(crystal.Entity);coin:add_component(crystal.Body);coin:set_position(10,0);print(hero:distance_to_entity(coin));-- Prints "10"