Add a pressure sensor

It's like the pressure plate but with an empty middle. So it can be combined with other block to achieve different looks.

mesecons_pressure_sensor/depends.txt

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+mesecons

mesecons_pressure_sensor/doc/pressureplate_stone/description.html

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+This receptor turns on if there's an object above it. An object can be a player, an item, a mob...

mesecons_pressure_sensor/doc/pressureplate_wood/description.html

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+This receptor turns on if there's an object above it. An object can be a player, an item, a mob...

mesecons_pressure_sensor/init.lua

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+local pp_box_off = {
+	type = "fixed",
+		fixed = {
+			{-0.4375, -0.5, -0.4375, -0.375, -0.46875, 0.4375}, -- NodeBox1
+			{0.375, -0.5, -0.4375, 0.4375, -0.46875, 0.4375}, -- NodeBox2
+			{-0.4375, -0.5, -0.4375, 0.4375, -0.46875, -0.375}, -- NodeBox3
+			{-0.4375, -0.5, 0.375, 0.4375, -0.46875, 0.4375}, -- NodeBox4
+			--{-0.3125, -0.53125, -0.3125, 0.3125, -0.46875, 0.3125}, -- NodeBox5
+			{-0.5, -0.5, -0.5, -0.3125, -0.49375, 0.5}, -- NodeBox6
+			{-0.5, -0.5, 0.3125, 0.5, -0.49375, 0.5}, -- NodeBox7
+			{0.3125, -0.5, -0.5, 0.5, -0.49375, 0.5}, -- NodeBox8
+			{-0.5, -0.5, -0.5, 0.5, -0.49375, -0.3125}, -- NodeBox9
+		}
+}
+
+local pp_box_on = {
+	type = "fixed",
+		fixed = {
+			{-0.4375, -0.5, -0.4375, -0.375, -0.4875, 0.4375}, -- NodeBox1
+			{0.375, -0.5, -0.4375, 0.4375, -0.4875, 0.4375}, -- NodeBox2
+			{-0.4375, -0.5, -0.4375, 0.4375, -0.4875, -0.375}, -- NodeBox3
+			{-0.4375, -0.5, 0.375, 0.4375, -0.4875, 0.4375}, -- NodeBox4
+			--{-0.3125, -0.53125, -0.3125, 0.3125, -0.46875, 0.3125}, -- NodeBox5
+			{-0.5, -0.5, -0.5, -0.3125, -0.49375, 0.5}, -- NodeBox6
+			{-0.5, -0.5, 0.3125, 0.5, -0.49375, 0.5}, -- NodeBox7
+			{0.3125, -0.5, -0.5, 0.5, -0.49375, 0.5}, -- NodeBox8
+			{-0.5, -0.5, -0.5, 0.5, -0.49375, -0.3125}, -- NodeBox9
+		}
+}
+
+local function pp_on_timer(pos, elapsed)
+	local node = minetest.get_node(pos)
+	local basename = minetest.registered_nodes[node.name].pressureplate_basename
+
+	-- This is a workaround for a strange bug that occurs when the server is started
+	-- For some reason the first time on_timer is called, the pos is wrong
+	if not basename then return end
+
+	local objs   = minetest.get_objects_inside_radius(pos, 1)
+	local two_below = vector.add(pos, vector.new(0, -2, 0))
+
+	if objs[1] == nil and node.name == basename .. "_on" then
+		minetest.set_node(pos, {name = basename .. "_off"})
+		minetest.sound_play("mesecons_pressure_sensor_off", {pos = pos, max_hear_distance = 20, gain = 0.5,})
+		mesecon.receptor_off(pos, mesecon.rules.pplate)
+	elseif node.name == basename .. "_off" then
+		for k, obj in pairs(objs) do
+			local objpos = obj:getpos()
+			if objpos.y > pos.y-1 and objpos.y < pos.y then
+				minetest.set_node(pos, {name = basename .. "_on"})
+				minetest.sound_play("mesecons_pressure_sensor_on", {pos = pos, max_hear_distance = 20, gain = 0.5,})
+				mesecon.receptor_on(pos, mesecon.rules.pplate )
+			end
+		end
+	end
+	return true
+end
+
+-- Register a Pressure Plate
+-- offstate:	name of the pressure plate when inactive
+-- onstate:	name of the pressure plate when active
+-- description:	description displayed in the player's inventory
+-- tiles_off:	textures of the pressure plate when inactive
+-- tiles_on:	textures of the pressure plate when active
+-- image:	inventory and wield image of the pressure plate
+-- recipe:	crafting recipe of the pressure plate
+-- groups:	groups
+-- sounds:	sound table
+
+function mesecon.register_pressure_plate(basename, description, textures_off, textures_on, image_w, image_i, recipe, groups, sounds)
+	local groups_off, groups_on
+	if not groups then
+		groups = {}
+	end
+	local groups_off = table.copy(groups)
+	local groups_on = table.copy(groups)
+	groups_on.not_in_creative_inventory = 1
+
+	mesecon.register_node(basename, {
+		drawtype = "nodebox",
+		inventory_image = image_i,
+		wield_image = image_w,
+		paramtype = "light",
+		is_ground_content = false,
+		description = description,
+		pressureplate_basename = basename,
+		on_timer = pp_on_timer,
+		on_construct = function(pos)
+			minetest.get_node_timer(pos):start(mesecon.setting("pplate_interval", 0.1))
+		end,
+		sounds = sounds,
+	},{
+		mesecons = {receptor = { state = mesecon.state.off, rules = mesecon.rules.pplate }},
+		node_box = pp_box_off,
+		selection_box = pp_box_off,
+		groups = groups_off,
+		tiles = textures_off
+	},{
+		mesecons = {receptor = { state = mesecon.state.on, rules = mesecon.rules.pplate }},
+		node_box = pp_box_on,
+		selection_box = pp_box_on,
+		groups = groups_on,
+		tiles = textures_on
+	})
+
+	minetest.register_craft({
+		output = basename .. "_off",
+		recipe = recipe,
+	})
+end
+
+
+mesecon.register_pressure_plate(
+	"mesecons_pressure_sensor:pressure_sensor",
+	"Pressure Sensor",
+	{"pressure_sensor_off_b.png","pressure_sensor_off_b.png","pressure_sensor_off_edges.png"},
+	{"pressure_sensor_on_b.png","pressure_sensor_on_b.png","pressure_sensor_on_edges.png"},
+	"pressure_sensor_wield.png",
+	"pressure_sensor_inv.png",
+	{{"group:wood", "group:wood"}},
+	{ choppy = 3, oddly_breakable_by_hand = 3 },
+	default.node_sound_wood_defaults())
+
+