So here's a question: If I want to make an NPC move I need to know which orientation an NPC has and what way I want it to go.
So I can pretty much understand a Vector 3 which would be move in the direction of +/- for x,y,z where x is left-right?, y is back-forward? and z is up-down? But quaternions I'm having a hard time getting my head around and I have a hard time coding something when I don't understand what it is. Is it some representation of rotation in 3D similar to the vector but for rotation instead? Is it measured in the naively intuitive +/- 0-360 degrees for each of x,y, z or is it measured in something more esoteric like radians or something else entirely? Anyone give me a quaternions-for-dummies elevator speech run-down so I know what I'm working with?
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