# Contour maps, turn based gaming, and space travel

by ifnspifn
Tags: based, contour, gaming, maps, space, travel, turn
 Mentor P: 11,597 Rocket mass m, exhaust velocity v and acceleration a give you $$\frac{dm}{dt}=m \frac{|a|}{v}$$ With the approximation that the player burns only a small part of his current rocket mass during a turn, you can keep m constant. v is usually given by the type of rocket. Therefore, dm/dt is proportional to |a|. Usually, dm/dt is limited by the construction of your drive, which limits |a| for each turn. Without this approximation, I think you'll need some integrals, as m and therefore dm/dt is changing over time.