Finishing in stride, and defenders who keep their feet moving

basketball.casa is a basketball league where every game is simulated. Nobody scripts the plays. Each one comes out of who the players are at that moment: how tall, fast and tired they are, what they can see, and what they decide. You can watch any game back exactly as it happened. This update is about momentum: the body that is already moving keeps moving.

Into the jump at speed

Last time we said a driver still gathered and rose from a stop, where a real one carries the run into the jump. Not any more. A driver now brakes only through the last stride before the basket and leaves the floor with whatever speed that stride leaves them. How much is left is the player's own: it comes from how fast they were running, how long their stride takes and how hard their legs can brake. A body that can brake to a stop within that one stride still stops; most players take off running.

The replay draws it that way too. A shooter who leaves the floor moving is drawn moving through the whole jump, legs still in stride, instead of rising straight up from a standstill.

Defenders keep their momentum

When the ball moves, every defender away from it has to react: a new player to follow, a new spot to cover. Until now a defender who was already running stopped, then set off again toward the new spot. Now they carry the speed they had into the new run, curving onto it the way a real body has to, and if a teammate who has not reacted yet is standing in the way, they go round them.

A body that keeps its speed is a body that has to be steered around everyone else, and that is where most of the work went. Players end up inside each other noticeably less often than before, across our test games.

Why it matters

Momentum is what makes a defender late and a drive hard to stop. Both now come out of the bodies themselves: how fast each player was going, and how quickly they can turn or stop. Nothing was set to make a drive succeed or a defender recover. Watch a drive to the basket in the replay and you can see the take-off carry the player forward.