Add the "wireless jammer"

README.md

@@ -14,6 +14,7 @@ MoreMesecons is a mod for minetest wich adds some mesecons items.
 * `Adjustable Player Detector` : Like a mesecons player detector, but you can change its detection radius by right-click.
 * `Craftable Command Block` : A command block with just some commands accepted. The admin can change the accepted command (first line of the init.lua), default "tell". Only "@nearest" can be used in the commands, and the admin can change the maximum distance of "@nearest" (default 8 blocks).
 * `Dual Delayer` : If it receives a mesecons signal, port 1 turns on immediatly and port 2 turns on 0.4 seconds later. At the end of the signal, port 2 turns off immediatly and port 1 turns off 0.4 secondes later. For example, this is useful for double extenders.
+* `Entity Detector` : You can use it to detect an entity. You can choose the entity to detect by right-click (use itemstring, for example "mobs:rat". To detect a dropped item, write "__builtin:item". To detect a specific dropped item, write its itemstring (for example "default:cobble")).
 * `Player Killer` : This block kills the nearest player (with a maximal distance of 8 blocks by default) (if this player isn't its owner) when it receives a mesecons signal.
 * `Sayer` : This node sends a message to every players inside a radius of 8 nodes.
 * `Signal Changer` : If it receives a signal on its pin "F", it turns on. If ti receives a signal on its pin "O", it turns off.
@@ -21,3 +22,4 @@ MoreMesecons is a mod for minetest wich adds some mesecons items.
 * `Teleporter` : If you place one teleporter, if it receives a mesecons, it teleports the nearest player on itself. If you place two teleporters on the same axis, if one receives a mesecons signal, it teleports the nearest player on the second (with a maximal distance of 50 nodes by default). The player teleporter must be inside a radius of 25 nodes.
 * `Temporary Gate` : If it receives a mesecons signal, whatever its duration, a mesecons signal is send with a fixed duration. You can change it by right-click (in seconds) (you can write for example 0.2 to send a pulse, or 20 to send long signals).
 * `Wireless` : Place 2 (or more) wireless somewhere. Change their channel by right-click. If you send a signal to a wireless, every wireless wich have the same channel will send the signal.
+* `Wireless Jammer` : If it receives a mesecons signal, it deactivates all wireless (receptors) in a radius of 15 nodes.

moremesecons_wireless/init.lua

@@ -1,3 +1,5 @@
+local JAMMER_MAX_DISTANCE = 15
+
 local wireless = {}
 local wireless_rids = {}
 
@@ -18,7 +20,7 @@ local wireless_activate = function(pos)
 		meta = minetest.get_meta(pos)
 		channel_first_wireless = meta:get_string("channel")
 		meta = minetest.get_meta(wireless[i])
-		if wireless[i] ~= pos and meta:get_string("channel") == channel_first_wireless then
+		if wireless[i] ~= pos and meta:get_string("channel") == channel_first_wireless and not minetest.find_node_near(pos, JAMMER_MAX_DISTANCE, {"moremesecons_wireless:jammer_on"}) then
 			mesecon.receptor_on(wireless[i])
 		end
 	end	
@@ -33,7 +35,7 @@ local wireless_deactivate = function(pos)
 		meta = minetest.get_meta(pos)
 		channel_first_wireless = meta:get_string("channel")
 		meta = minetest.get_meta(wireless[i])
-		if wireless[i] ~= pos and meta:get_string("channel") == channel_first_wireless then
+		if wireless[i] ~= pos and meta:get_string("channel") == channel_first_wireless and not minetest.find_node_near(pos, JAMMER_MAX_DISTANCE, {"moremesecons_wireless:jammer_on"}) then
 			mesecon.receptor_off(wireless[i])
 		end
 	end	
@@ -69,6 +71,33 @@ minetest.register_node("moremesecons_wireless:wireless", {
 	end,
 })
 
+mesecon.register_node("moremesecons_wireless:jammer", {
+	description="Wireless Jammer",
+	paramtype = "light",
+},{
+	tiles = {"moremesecons_jammer_off.png"},
+	groups = {dig_immediate=2},
+	mesecons = {effector = {
+		action_on = function(pos)
+			table.foreach(pos, print)
+			minetest.swap_node(pos, {name="moremesecons_wireless:jammer_on"})
+		end }}
+},{
+	tiles = {"moremesecons_jammer_on.png"},
+	groups = {dig_immediate=2, not_in_creative_inventory=1},
+	mesecons = {effector = {
+		action_off = function(pos)
+			minetest.swap_node(pos, {name="moremesecons_wireless:jammer_off"})
+		end }}
+})
+
+minetest.register_craft({
+	output = "moremesecons_wireless:jammer_off",
+	recipe = {
+		{"moremesecons_wireless:wireless", "mesecons_torch:mesecon_torch_on", "moremesecons_wireless:wireless"}
+	}
+})
+
 minetest.register_craft({
 	output = "moremesecons_wireless:wireless 2",
 	recipe = {