card scanner

.luacheckrc

@@ -13,5 +13,6 @@ read_globals = {
 	"vector", "ItemStack",
 	"dump", "VoxelArea",
 
-	"unifieddyes"
+	"unifieddyes", "mesecon", "default",
+	"scifi_nodes"
 }

card_scanner.lua

@@ -0,0 +1,119 @@
+-- stolen and adapted from https://github.com/D00Med/scifi_nodes/blob/master/palm_scanner.lua
+
+
+local function activate_palm_scanner(pos, node, player)
+	local name = player and player:get_player_name()
+	name = name or ""
+
+  local wield_item = player:get_wielded_item()
+  local wield_str = wield_item:to_string()
+
+  local meta = minetest.get_meta(pos)
+  if meta:get_int("configured") ~= 1 then
+
+    if wield_str then
+      minetest.sound_play("scifi_nodes_palm_scanner", {max_hear_distance = 8, pos = pos, gain = 1.0})
+      meta:set_string("key", wield_str)
+      meta:set_int("configured", 1)
+      minetest.chat_send_player(name, "Scanner-key set to '" .. wield_str .. "'")
+    end
+    return
+  end
+
+	node.name = "access_cards:palm_scanner_checking"
+	minetest.swap_node(pos, node)
+
+	minetest.sound_play("scifi_nodes_palm_scanner", {max_hear_distance = 8, pos = pos, gain = 1.0})
+	minetest.chat_send_player(name, "Checking : please wait.")
+
+	-- check key
+  local key = meta:get_string("key")
+
+	minetest.after(2, function()
+		if key ~= wield_str then
+      node.name = "access_cards:palm_scanner_off"
+      minetest.swap_node(pos, node)
+
+			minetest.chat_send_player(name, "Access denied !")
+			minetest.sound_play("scifi_nodes_scanner_refused", {max_hear_distance = 8, pos = pos, gain = 1.0})
+
+		else
+      node.name = "access_cards:palm_scanner_on"
+			minetest.swap_node(pos, node)
+
+			minetest.chat_send_player(name, "Access granted !")
+			mesecon.receptor_on(pos, scifi_nodes.get_switch_rules(node.param2))
+
+      -- reset state
+      minetest.after(2, function()
+        node.name = "access_cards:palm_scanner_off"
+        minetest.swap_node(pos, node)
+        mesecon.receptor_off(pos, scifi_nodes.get_switch_rules(node.param2))
+      end)
+
+		end
+	end)
+end
+
+minetest.register_node("access_cards:palm_scanner_off", {
+	description = "Palm scanner",
+	tiles = {"scifi_nodes_palm_scanner_off.png",},
+	inventory_image = "scifi_nodes_palm_scanner_off.png",
+	wield_image = "scifi_nodes_palm_scanner_on.png",
+	drawtype = "signlike",
+	sunlight_propagates = true,
+	buildable_to = false,
+	node_box = {type = "wallmounted",},
+	selection_box = {type = "wallmounted",},
+	paramtype = "light",
+	paramtype2 = "wallmounted",
+	groups = {cracky=1, oddly_breakable_by_hand=1, mesecon_needs_receiver = 1},
+	mesecons = {
+		receptor = {
+			state = mesecon.state.off
+		}
+	},
+	on_rightclick = activate_palm_scanner,
+	sounds = default.node_sound_glass_defaults(),
+})
+
+minetest.register_node("access_cards:palm_scanner_checking", {
+	description = "Palm scanner",
+	tiles = {{
+		name = "scifi_nodes_palm_scanner_checking.png",
+		animation = {type = "vertical_frames",aspect_w = 16,aspect_h = 16,length = 1.5}
+	}},
+	drawtype = "signlike",
+	sunlight_propagates = true,
+	buildable_to = false,
+	node_box = {type = "wallmounted",},
+	selection_box = {type = "wallmounted",},
+	paramtype = "light",
+	paramtype2 = "wallmounted",
+	groups = {cracky=1, oddly_breakable_by_hand=1, not_in_creative_inventory=1, mesecon_needs_receiver = 1},
+	drop = "access_cards:palm_scanner_off",
+	sounds = default.node_sound_glass_defaults()
+})
+
+minetest.register_node("access_cards:palm_scanner_on", {
+	description = "Palm scanner",
+	sunlight_propagates = true,
+	buildable_to = false,
+	tiles = {"scifi_nodes_palm_scanner_on.png",},
+	inventory_image = "scifi_nodes_palm_scanner_on.png",
+	wield_image = "scifi_nodes_palm_scanner_on.png",
+	drawtype = "signlike",
+	node_box = {type = "wallmounted",},
+	selection_box = {type = "wallmounted",},
+	paramtype = "light",
+	paramtype2 = "wallmounted",
+	light_source = 5,
+	groups = {cracky=1, oddly_breakable_by_hand=1, not_in_creative_inventory=1, mesecon_needs_receiver = 1},
+	drop = "access_cards:palm_scanner_off",
+	mesecons = {
+		receptor = {
+			state = mesecon.state.on
+		}
+	},
+	sounds = default.node_sound_glass_defaults(),
+})

init.lua

@@ -5,4 +5,8 @@ access_cards = {}
 dofile(MP.."/form.accesscard.lua")
 dofile(MP.."/cards.lua")
 
+if minetest.get_modpath("scifi_nodes") and minetest.get_modpath("mesecons") then
+  dofile(MP.."/card_scanner.lua")
+end
+
 print("[OK] access_cards")

mod.conf

@@ -1,2 +1,3 @@
 name = access_cards
 depends = unifieddyes
+optional_depends = scifi_nodes, mesecons