I’ve been going through all the design patterns in context of game programming form this book, before starting my next big project. Apart from that I’ve been reading about them in more general context. The one I have trouble undertanding is the command pattern, specifically the part about using it for game AI.
The author says:
The decoupling here between the AI that selects commands and the actor code that performs them gives us a lot of flexibility. We can use different AI modules for different actors. Or we can mix and match AI for different kinds of behavior. Want a more aggressive opponent? Just plug-in a more aggressive AI to generate commands for it. In fact, we can even bolt AI onto the player’s character, which can be useful for things like demo mode where the game needs to run on auto-pilot.
This part makes me think that the main point of using the command pattern is the ability to mix different AI modules with different actors. Isn’t this functionality achievable with a simple interface? In all the other, more general books the main benefits of this pattern are: postponing the execution, queuing commands, logging and undo functionality.
So to summarize: Is the command pattern useful for decoupling game AI for the actors even if I don’t need any core functionality it provides?
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