Create a collection of attack modes

[jrbasso]

Create an object to hold all attack modes. This should lazy load the attacks from the config file (the alias needs to be added to the config).

It will avoid the attack mode be loaded for each player and it will dynamically be loaded without change the player code.

[young-steveo]

👍

[young-steveo]

Actually, hang on: I checked the code, and the attack modes are already static: they are loaded once and stored as a property on the Player object, not on the prototype.

But, loading from config is still a good idea.