How can I write a script or create a macro for gaming.

Now I know this may be a petty and or silly question for most apple users but I am going to throw it out there anyway. I play an online game called Battle Pirates. When you make an attack you have up to 5 ships to control. I am looking for a way to control multiple ships with a "macro" or "script" and using only 1 key. For example: Select ship 2, 3, and 4 while leaving ship 1 and 5 alone. Yea I know it is childish but indulge me. Hahaha.

I know you can write Macros with Windows and you can even use something called "Auto Hotkey". I just wanted to see if anyone knew of a way to do this with what Apple already has in place. What I have commonly found out with Apple products is that since I have come from being a Windows user to Apple, I usually overthink the process. LOL. Mac's are soooooo much easier....if you know where to start.

Any help would be greatly appreciated! By the way, I have read the tutorial on "Script Editor" but I am having trouble understanding it mostly because you kinda would have to have SOME programming knowledge. Obviously I lack in that area. Thanks for bearing with me.