Code Code and more code

This week has been devoted to make some code to get some game-play in to my level.

Below are a list of components that I have done in code.

Door script code/load level code – done.
Repair book script – done.
Filter script – to do.

My main problem at the moment is that I am trying to get two C# scripts to communicate with each other but I cant find out how to do it. in unity 3D I hope that tomorrow I can talk to my lecture and get some help on this.