From 7dc8ca812e86c7c2021b3c90250f01060bf7c732 Mon Sep 17 00:00:00 2001
From: codexp <codexp@gmx.net>
Date: Sat, 14 Jul 2018 03:20:03 +0200
Subject: [PATCH] functional sweeper [WIP]

---
 init.lua    | 14 ++++++++++++++
 nodes.lua   |  7 -------
 sweeper.lua | 45 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 59 insertions(+), 7 deletions(-)
 create mode 100644 sweeper.lua

diff --git a/init.lua b/init.lua
index c12f5e0..7ec2e92 100644
--- a/init.lua
+++ b/init.lua
@@ -24,6 +24,19 @@ moreblocks.intllib = S
 
 local modpath = minetest.get_modpath("moreblocks")
 
+function moreblocks.check_protection(pos, name, tool, text)
+	if minetest.is_protected(pos, name) then
+		minetest.log("action", (name ~= "" and name or "A mod")
+			.. " tried to " .. text
+			.. " at protected position "
+			.. minetest.pos_to_string(pos)
+			.. " with a " .. (tool or ""))
+		minetest.record_protection_violation(pos, name)
+		return true
+	end
+	return false
+end
+
 dofile(modpath .. "/config.lua")
 dofile(modpath .. "/circular_saw.lua")
 dofile(modpath .. "/stairsplus/init.lua")
@@ -31,6 +44,7 @@ dofile(modpath .. "/nodes.lua")
 dofile(modpath .. "/redefinitions.lua")
 dofile(modpath .. "/crafting.lua")
 dofile(modpath .. "/aliases.lua")
+dofile(modpath .. "/sweeper.lua")
 
 if minetest.settings:get_bool("log_mods") then
 	minetest.log("action", S("[moreblocks] loaded."))
diff --git a/nodes.lua b/nodes.lua
index efa1f94..9947a69 100644
--- a/nodes.lua
+++ b/nodes.lua
@@ -472,10 +472,3 @@ for name, def in pairs(nodes) do
 		})
 	end
 end
-
--- Items
-
-minetest.register_craftitem("moreblocks:sweeper", {
-	description = S("Sweeper"),
-	inventory_image = "moreblocks_sweeper.png",
-})
diff --git a/sweeper.lua b/sweeper.lua
new file mode 100644
index 0000000..ae43dcb
--- /dev/null
+++ b/sweeper.lua
@@ -0,0 +1,45 @@
+local S = moreblocks.intllib
+local check_protection = moreblocks.check_protection
+local sweepables = {}
+
+-- example sweepable node
+-- TODO API for sweepable node registration
+sweepables["default:mossycobble"] = function(pos, node)
+	-- hit 3 times to clean
+	if node.param1 < 2 then
+		node.param1 = node.param1 + 1
+		minetest.set_node(pos, node)
+		return false
+	end
+
+	-- set clean node
+	minetest.set_node(pos, { name = "default:cobble" })
+
+	return true
+end
+
+
+-- functional sweeper
+minetest.register_craftitem("moreblocks:sweeper", {
+	description = S("Sweeper"),
+	inventory_image = "moreblocks_sweeper.png",
+	on_use = function(itemstack, user, pointed_thing)
+		if pointed_thing.type ~= "node" then
+			-- do nothing if it's not a node
+			return
+		end
+
+		local node = minetest.get_node(pointed_thing.under)
+		local sweepable = sweepables[node.name]
+
+		if not sweepable then
+			return
+		end
+
+		if check_protection(pointed_thing.under, user:get_player_name(), "sweeper", "sweep " .. node.name) then
+			return
+		end
+
+		sweepable(pointed_thing.under, node)
+	end
+})