Suppress fires.

abms.lua

@@ -412,10 +412,33 @@ minetest.register_abm({
 	end
 })
 
+minetest.register_abm({
+	nodenames = {"fire:basic_flame"},
+	interval = 10 * time_factor,
+	chance = 10,
+	action = function(p0, node, _, _)
+		minetest.remove_node(p0)
+	end,
+})
+
 ------------------------------------------------------------
 -- creation
 ------------------------------------------------------------
 
+minetest.register_abm({
+	nodenames = {"fun_caves:tree"},
+	neighbors = {'fire:basic_flame'},
+	interval = 1 * time_factor,
+	chance = 20,
+	action = function(pos, node)
+		if not (pos and node) then
+			return
+		end
+
+		minetest.set_node(pos, {name = 'fun_caves:sap'})
+	end
+})
+
 minetest.register_abm({
 	nodenames = {"default:leaves"},
 	interval = 10 * time_factor,