Floor Surface:
Amount (Portion)
Smoothness  
Pebblestones ✓
10%
40%
Dirt ✗
0%
0%
Grass 
0%
0%
Sand 
0%
0%
​Smooth Cobblestones ✓
​Marble
50%
80%
Uneven Cobblestones ✓
​Marble
10%
40%
 Asphalt ​✓
10%
85%
Concrete ✗
0%
0%
Wood  ✓
20%
85%
Carpet 
0%
Area Rugs
0%