Simulation runs in fixed steps of 1/50 s (50 steps a second) instead of 1/20 s, with at most twelve catch-up steps in one frame

src/commands.rs

@@ -239,7 +239,7 @@ mod tests {
         a.queue(Act::Pickup { ent: ogre });
         a.queue(Act::Drop { x: drop_at.0, y: drop_at.1 });
         for _ in 0..20 {
-            a.update(0.05);
+            a.update(STEP);
         }
 
         // the same game driven like a match (one turn with all commands, then the same steps)