GPUParticles: Tweak snow parameters.

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@14975 178a84e3-b1eb-0310-8ba1-8eac791a3b58

data/gfx/snow.xml

@@ -5,9 +5,9 @@
 
     <spreading angle="3"           />
     
-    <velocity  x="0.0"
+    <velocity  x="-0.01"
                y="-0.01"
-               z="0.0"             />
+               z="-0.02"             />
     
     <material  file="snowflake.png" clampu="Y" clampv="Y" />
     

src/karts/kart.cpp

@@ -2313,7 +2313,7 @@ void Kart::loadData(RaceManager::KartType type, bool is_animated_model)
 
         m_sky_particles_emitter =
             new ParticleEmitter(track->getSkyParticles(),
-                                core::vector3df(0.0f, 40.0f, 100.0f),
+                                core::vector3df(0.0f, 20.0f, 100.0f),
                                 getNode());
 
         // FIXME: in multiplayer mode, this will result in several instances