Maybe I'm missing something here, but to me the solution that jumps out is to make an Aquarium class which has the fish vector as a member and populates that vector with fish in its constructor (possibly with parameters for the number of fish and such which can be specified in main.cpp via constructor arguments).Originally Posted by MipZhaP
I suggest you post the files you use (both .h and .cpp) with just the declaration of the classes (excluding anything between brackets).Another solution is to (from main.cpp) give a pointer to the list as a parameter to every fish so they can have a reference to it and then give that reference to the boids.cpp algorithm when it needs to use it. But this is stupid since the refence needs to go through fish.cpp - which really doesn't need that reference for itself at all.
This way you can get a better advice, since there are two separate issues.
1) The class design
2) The linkage of the file
These are not necessarily linked together
