$metal
size=0.04
lifetime=20
particles=10
speed=0.03
blend=3
$wall
size=0.1
lifetime=40
particles=4
speed=0.02
rotation=1
$vegetation
size=0.6
lifetime=40
particles=1
speed=0.0
$wood
size=0.1
lifetime=40
speed=0.014
particles=8
rotation=10
$<nobulletcollision>