Multiple changes:

- Adjust giant tree spawns.
- Remove dragon from dungeons.
- Adjust all abms.
- Allow giant trees to grow back damage.
- Revamp ice trap.
- Fix iron moonstone and coral teleporters.

goblin.lua

@@ -26,6 +26,7 @@ local function goblin_do(self)
 		return
 	end
 
+	local cold_natured = false
 	local pos = self.object:getpos()
 	pos.y = pos.y + 0.5
 
@@ -51,7 +52,8 @@ local function goblin_do(self)
 	-- place a trap
 	local trap = 'fun_caves:mossycobble_trap'
 	if self.name == 'fun_caves:goblin_ice' then
-		trap = 'fun_caves:stone_with_ice_trap'
+		cold_natured = true
+		trap = 'fun_caves:ice_trap'
 		fun_caves.search_replace(pos, trap_freq, {"default:ice"}, trap)
 	else
 		if self.name == 'fun_caves:goblin_coal' then
@@ -73,7 +75,7 @@ local function goblin_do(self)
 		fun_caves.search_replace(pos, trap_freq, {"group:stone", "default:sandstone"}, trap)
 	end
 
-	fun_caves.surface_damage(self)
+	fun_caves.surface_damage(self, cold_natured)
 end
 
 
@@ -513,7 +515,7 @@ minetest.register_abm({
 
 minetest.register_node("fun_caves:ice_trap", {
 	description = "Ice Trap",
-	tiles = {"default_ice.png^default_mineral_coal.png"},
+	tiles = {"default_ice.png^fun_caves_mineral_moonstone.png"},
 	groups = {cracky = 3},
 	drop = 'default:ice',
 	is_ground_content = false,
@@ -527,9 +529,20 @@ minetest.register_abm({
 	action = function(pos, node, active_object_count, active_object_count_wider)
 		for _,object in ipairs(minetest.env:get_objects_inside_radius(pos, 2)) do
 			if object:is_player() then
-				minetest.set_node(pos, {name="fire:basic_flame"})
-				if object:get_hp() > 0 then
-					object:set_hp(object:get_hp()-2)
+				local ppos = object:getpos()
+				if ppos then
+					ppos.y = ppos.y + 1
+					local p1 = vector.subtract(ppos, 2)
+					local p2 = vector.add(ppos, 2)
+					local nodes = minetest.find_nodes_in_area(p1, p2, 'air')
+					for _, npos in pairs(nodes) do
+						minetest.set_node(npos, {name="default:ice"})
+						minetest.set_node(pos, {name="default:ice"})
+					end
+
+					if object:get_hp() > 0 then
+						object:set_hp(object:get_hp()-2)
+					end
 				end
 			end
 		end