@@ -92,21 +92,21 @@
 		end ::found::
 
 		local tposhash = minetest.hash_node_position(tpos)
 		local live, should_cache
-		local mass_leaves, mass_trunk, topnode, prevalidate
+		local mass_trunk, topnode, prevalidate
 		if abm_cache.treehash[tposhash] then
 			live = true
 			local c = abm_cache.treehash[tposhash]
-			mass_leaves = c.mass_leaves
+			-- mass_leaves = c.mass_leaves
 			mass_trunk = c.mass_trunk
 			prevalidate = true
 		else
 			local tbody
 			live, tbody = sorcery.lib.node.tree_is_live(tpos)
 			if live then
 				should_cache = tbody.nodes[tbody.trunk]
-				mass_leaves = #(tbody.nodes[tbody.leaves])
+				-- mass_leaves = #(tbody.nodes[tbody.leaves])
 				mass_trunk = #(tbody.nodes[tbody.trunk]) * 12
 				topnode = tbody.topnode
 			end
 		end
@@ -117,22 +117,24 @@
 		if mass_trunk < 12*3 then return end -- too small
 
 		tapdrip(tree.sapliq,pos)
 
-		local mass = mass_leaves + mass_trunk
-		local max_mass = 400
-		local ltratio = mass_leaves / mass_trunk
-		local mratio = mass / max_mass
-		local outof = 15 / mratio
-		local chance = math.max(1, math.floor(outof - (25 * ltratio))) / 3
-		local diceroll = math.random(1,chance)
+		local mass = mass_trunk -- + mass_leaves
+		local max_mass = 250 -- 400
+		-- local ltratio = mass_leaves / mass_trunk
+		-- local mratio = mass / max_mass
+		-- local outof = 15 / mratio
+		-- local chance = math.max(1, math.floor(outof - (25 * ltratio))) / 3
+		local chance = mass / max_mass
+		local diceroll = math.random(1,math.ceil(chance))
 		-- log.act('rolling dice: ', chance,diceroll, '(lt ratio =', ltratio, '; mass ratio = ', mratio, '; tree mass =', mass, '; outof =', outof)
 		if diceroll ~= 1 then return end -- failed roll
 
-		if not prevalidate then
-			if minetest.get_natural_light(vector.offset(topnode,0,1,0), 0.5) < 13
-				then return false end
-		end
+		-- if not prevalidate then
+		-- 	if minetest.get_natural_light(vector.offset(topnode,0,1,0), 0.5) < 13
+		-- 		then return false end
+		-- end
+		-- FIXME
 
 		for i=1,8 do
 			local at = vector.offset(pos, 0,-i,0)
 			if sorcery.lib.node.is_air(at) then goto skip end
@@ -161,10 +163,10 @@
 							minetest.swap_node(at, node)
 						end
 						if should_cache then
 							for _,v in pairs(should_cache) do
-								abm_cache.treehash[v:to_string()] = {
-									mass_leaves = mass_leaves;
+								abm_cache.treehash[minetest.hash_node_position(v)] = {
+									-- mass_leaves = mass_leaves;
 									mass_trunk = mass_trunk;
 								}
 							end
 						end