First off let me say that what I have here is what I have learned from a written tutorial from year 2000(Took me 3 weeks to get this 1 event down, lol). Also I am still some what new to rpg maker so what you see could and probably needs some fixing. With that being said, let's get on with it 
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1st you need this "Check" event somewhere in the corner out of the way:
View attachment 30563View attachment 30564
After setting up that "Check" event now set this "Revolver" event:
View attachment 30565View attachment 30566View attachment 30567View attachment 30568View attachment 30569View attachment 30570
Notice the Autonomous Movement type is set to Custom:
View attachment 30571
Change the direction for each page of the Revolver's direction.
....Enemy event coming next...
.1st you need this "Check" event somewhere in the corner out of the way:
View attachment 30563View attachment 30564
After setting up that "Check" event now set this "Revolver" event:
View attachment 30565View attachment 30566View attachment 30567View attachment 30568View attachment 30569View attachment 30570
Notice the Autonomous Movement type is set to Custom:
View attachment 30571
Change the direction for each page of the Revolver's direction.
....Enemy event coming next...
