Events.onStepTakenFieldMovement+=proc{|sender,e|
event=e[0] # Get the event affected by field movement
currentTag=pbGetTerrainTag(event)
if pbGetTerrainTag(event,true)==PBTerrain::Grass # Won't show if under bridge
$scene.spriteset.addUserAnimation(GRASS_ANIMATION_ID,event.x,event.y)