mods that hopefully work for a TechAge-based pack

mods/handholds_redo/lib/utility.lua

@@ -0,0 +1,79 @@
+local utility = {}
+
+function utility.is_creative(player)
+	if minetest.settings:get_bool("creative_mode") == true then
+		return true
+	end
+	local name = player:get_player_name()
+	if name == nil or name == "" then
+		return false
+	end
+	return minetest.check_player_privs(name, { creative = true })
+end
+
+
+function utility.is_replaceable(pos)
+	local node = minetest.registered_nodes[minetest.get_node(pos)]
+	if node == nil or node.name == "handholds_redo:holds" then return true end
+	return node.name == "air" or node.buildable_to
+end
+
+function utility.is_climbable(pos, level)
+	local def = minetest.registered_nodes[minetest.get_node(pos).name]
+	if def == nil then return false end
+	if def.groups == nil or def.groups.handholds == nil then return false end
+	return level >= def.groups.handholds
+end
+
+
+function utility.place_holds(itemstack, placer, pointed_thing)
+	if itemstack == nil then return end
+	local itemdef = itemstack:get_definition()
+	if itemdef == nil
+			or itemdef.groups == nil
+			or itemdef.groups.climbing_pick == nil then
+		return
+	end
+
+	if pointed_thing == nil or
+			pointed_thing.type ~= "node" or
+			pointed_thing.under.y + 1 == pointed_thing.above.y or
+			not utility.is_replaceable(pointed_thing.above) or
+			not utility.is_climbable(pointed_thing.under, itemdef.groups.climbing_pick) then
+		return
+	end
+
+	if minetest.is_protected(pointed_thing.under, placer:get_player_name()) or
+			minetest.is_protected(pointed_thing.above, placer:get_player_name()) then
+		minetest.record_protection_violation(pointed_thing.above, placer)
+		return
+	end
+
+	local rotation = minetest.dir_to_wallmounted(
+		vector.subtract(pointed_thing.under, pointed_thing.above)
+	)
+
+	minetest.set_node(pointed_thing.above, {
+		name = "handholds_redo:holds",
+		param2 = rotation
+	})
+
+	minetest.sound_play(
+		"default_dig_cracky",
+		{pos = pointed_thing.under, gain = 0.5, max_hear_distance = 8}
+	)
+
+	if not utility.is_creative(placer) then
+		local wdef = itemstack:get_definition()
+		itemstack:add_wear(256)
+		if itemstack:get_count() == 0 and wdef.sound and wdef.sound.breaks then
+			minetest.sound_play(wdef.sound.breaks, {
+				pos = pointed_thing.above,
+				gain = 0.5
+			})
+		end
+	end
+	return itemstack
+end
+
+return utility