Moving and Changing Velocity

• If the physics is move to exactly where you want, it's easy (just do it).
• If it's move discretely (e.g. one step forward, turn ....), it's also fairly easy (though see path following).
• It becomes more complex if you're using steering and velocity (like spacewars).
• It becomes even more complex if you want to deal with friction in car simulations.
• For now, let's just talk about space wars. The physics is a lot easier.
• If the agent is still and wants to go to a place, just point to that place and then go.
• That is, move the direction vector of the agent to point to the desired locale (L).
• If the agent is at A, the desired direction vector is A-L (in 2 or 3D).
• The magnitude doesn't matter, because you're just going to go, and then eventually go over L.
• What direction do I want to move in if I'm at 3,4 and want to go to 7,2?
• What direction do I want to move in if I'm at 3,4,1 and want to go to 7,2,9?
• What if you want to stop at L?