Fix a very rare bug, add rubber tree if moretrees is there.

depends.txt

@@ -2,3 +2,4 @@ default
 farming
 wool
 stairs
+moretrees?

trees.lua

@@ -200,3 +200,23 @@ mg.register_tree({
 		end
 	end
 })
+
+function mg.get_spawn_tree_func(treedef)
+	return function(data, a, x, y, z, minp, maxp, pr)
+		if minp.y <= y and y <= maxp.y then
+			minetest.after(0, minetest.spawn_tree, {x=x, y=y, z=z}, treedef)
+		end
+	end
+end
+
+if minetest.get_modpath("moretrees") then
+	mg.register_tree({
+		min_humidity = 0,
+		min_temperature = 0.2,
+		min_height = 1,
+		max_height = 5,
+		grows_on = c_grass,
+		chance = 800,
+		grow = mg.get_spawn_tree_func(moretrees.rubber_tree_model)
+	})
+end

villages.lua

@@ -34,7 +34,7 @@ local function choose_building(l, pr)
 	while true do
 		local p = pr:next(1, 3000)
 		for b, i in ipairs(buildings) do
-			if i.max_weight > p then
+			if i.max_weight >= p then
 				btype = b
 				break
 			end