animals spawn near grass now (chance amended to suit)

warthog.lua

@@ -59,16 +59,19 @@ stepheight = 0.6,
 
 
 local spawn_on = "default:dirt_with_grass"
+local spawn_by = {"group:grass"}
 
 if minetest.get_modpath("ethereal") then
 	spawn_on = "ethereal:mushroom_dirt"
+	spawn_by = {"flowers:mushroom_brown", "flowers:mushroom_brown"}
 end
 
 mobs:spawn({
 	name = "mobs_animal:pumba",
 	nodes = {spawn_on},
+	neighbors = spawn_by,
 	min_light = 10,
-	chance = 15000,
+	chance = 5000, -- 15000
 	min_height = 0,
 	max_height = 200,
 	day_toggle = true,