Now that all the routes are in place, the next two challenges are to change the shape and colour of the particle depengin on the properties of the route. The second is being able to conditionally remove or add routes based on the state. Initially this was going to be a boolean, but I think now I want to add this is a number which can be incremented up when a particle finishes a route and then used to create the next particle when a certain amount arrive.
First part is done, there are now different colours and forms for each type and plastic as they go through the system. There are still things to do now, but for now it feels quite full. I think I still need to clean up the pipes and change the lines.