I'm sure this has to have been discussed many times on forums before, but I just can't seem to type the right combinations of words into google to find it. Anyway, I'm wondering how you can check if a core plugin has been installed on a server before initializing the child plugin. For example if you had two plugins, one named ServerCore and the other named ServerGames. How can you make ServerGames only run if ServerCore is also installed. Is it also possible to check the plugin version as well?