if ( grasses ) then
	for _, ent in pairs( grasses ) do
		ent:Remove()
	end
end

grasses = {}

local pos = util.QuickTrace( LocalPlayer():GetPos(), LocalPlayer():GetPos() - Vector( 0, 0, 1024 ), LocalPlayer() ).HitPos

for x = -128, 128, 15 do
	for y = -128, 128, 15 do
		local grass = ClientsideModel( "models/props_foliage/grass3.mdl" )
		grass:SetPos( pos + Vector( x, y, 0 ) )
		grass.PrevPos = pos
		table.insert( grasses, grass )
	end
end

hook.Add( "HUDPaint", "UpdateGrass", function()
	if ( grasses ) then
		local pos = util.QuickTrace( LocalPlayer():GetPos(), LocalPlayer():GetPos() - Vector( 0, 0, 1024 ), LocalPlayer() ).HitPos

		for _, ent in pairs( grasses ) do
			ent:SetPos( ent:GetPos() + ( pos - ent.PrevPos ) )
			ent.PrevPos = pos
		end
	end
end )