From 1cc9f503a44dc77096eb7140d6f2bcdaf9e51a79 Mon Sep 17 00:00:00 2001
From: hiker <henrichsjoerg@gmail.com>
Date: Fri, 11 Aug 2017 17:22:25 +1000
Subject: [PATCH] DT can actually be 0 :P  (e.g. in server with no graphics,
 and I guess on really fast computers). Bad things happen with dt=0, so set dt
 to at least 1 ms.

---
 src/main_loop.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main_loop.cpp b/src/main_loop.cpp
index 4b06403ae..5d429fa5d 100644
--- a/src/main_loop.cpp
+++ b/src/main_loop.cpp
@@ -86,7 +86,11 @@ float MainLoop::getLimitedDt()
     {
         m_curr_time = device->getTimer()->getRealTime();
         dt = (float)(m_curr_time - m_prev_time);
-        if (dt <= 0) break;    // should not really happen
+        if (dt <= 0)
+        {
+            dt = 1;   // at least 1 ms, otherwise with dt=0 bad things happen
+            break;    // should not really happen
+        }
         const World* const world = World::getWorld();
         if (UserConfigParams::m_fps_debug && world)
         {