make apple blossoms only grow on trees within 20m of water by default

nature_classic/blossom.lua

@@ -41,7 +41,9 @@ minetest.register_abm({
     chance = BLOSSOM_CHANCE,
 
     action = function(pos, node, active_object_count, active_object_count_wider)
-		nature:grow_node(pos, BLOSSOM_NODE)
+		if nature:is_near_water(pos) then
+			nature:grow_node(pos, BLOSSOM_NODE)
+		end
     end
 })
 

nature_classic/config.lua

@@ -1,6 +1,6 @@
 -- Set on which distance from water can the tree still grow.
 -- Grows anywhere if set to -1.
-DISTANCE_FROM_WATER = -1
+DISTANCE_FROM_WATER = 20
 
 -- Minimum light level needed to grow. Default is 8, which means daylight.
 MINIMUM_GROWTH_LIGHT = 8