minetest/minetest — pull request #866 by WilliamBundy (2013-08-11 12:14:44+00:00)
Title: Airtime Improvement

Previously, when moving and jumping, as soon as the arrow keys were released, all velocity would instantly slow to a stop. This fix adds a damping system that doesn't stop the player in midair. Instead of being stopped when speedH's length was zero, it is eased down to zero based on configurable damping values. This system could be extended to work slippery materials too, such as ice.