From dc213cdeeb909a485335109ff071579ac86696de Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Oudin?= <oudin@crans.org>
Date: Tue, 13 Feb 2018 16:21:38 +0100
Subject: [PATCH] Fix bouncing when staying on the ground.

Now, there is still a min_p that is respected.
---
 Ball.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Ball.cpp b/Ball.cpp
index 0103ceb..9b13459 100644
--- a/Ball.cpp
+++ b/Ball.cpp
@@ -31,10 +31,10 @@ void Ball::_compute_pos(double dt) {
         );
     } else {
         double n_time = crt_time - stop_bouncing;
-        Center.y = ((radius * (1.0 - exp(-n_time)) + radius)/2.) + (radius -
-                ((radius * (1- exp(-n_time)) + radius)/2.)) * sin(5. * n_time);
-        v_x *= 0.99;
-        v_z *= 0.99;
+        double min_rad = radius - min_height;
+        Center.y = min_height + ((min_rad * (1.0 - exp(-n_time)) + min_rad )/2.) +
+            (min_rad - ((min_rad* (1- exp(-n_time)) + min_rad)/2.)) * sin(5. *
+                    n_time);
     }
     Center.x += dt * v_x;
     Center.z += dt * v_z;