fix overshoot calculation when matching velocity

src/camera.rs

@@ -227,7 +227,7 @@ pub fn apply_input_to_player(
             let threshold = 1e-5;
             if key_input.pressed(settings.key_stop) {
                 // Decelerate
-                let dv = target_v - v.0;
+                let dv = v.0 - target_v;
                 for i in 0..3 {
                     if dv[i].abs() < threshold {
                         v[i] = target_v[i];