Merge pull request 'Piston-breakable nodes don't fill up the push limit, items properly drop' (#3813) from seventeenthShulker/MineClone2:piston_digs_properly into master

Reviewed-on: https://git.minetest.land/MineClone2/MineClone2/pulls/3813

mods/HUD/mcl_inventory/creative.lua

@@ -741,7 +741,8 @@ if minetest.is_creative_enabled("") then
 			for _, item in ipairs(drops) do
 				minetest.add_item(pos, item)
 			end
-		end
+		else
+			-- If there is a player
 			local inv = digger:get_inventory()
 			if inv then
 				for _, item in ipairs(drops) do
@@ -751,6 +752,7 @@ if minetest.is_creative_enabled("") then
 				end
 			end
 		end
+	end
 end
 
 minetest.register_on_joinplayer(function(player)

mods/ITEMS/REDSTONE/mesecons/util.lua

@@ -246,6 +246,15 @@ function mesecon.mergetable(source, dest)
 	return rval
 end
 
+-- 
+function mesecon.join_table(t1, t2)
+	local rval = mesecon.tablecopy(t2)
+	for i, v in ipairs(t1) do
+		table.insert(rval, mesecon.tablecopy(v))
+	end
+	return rval
+end 
+
 function mesecon.register_node(name, spec_common, spec_off, spec_on)
 	spec_common.drop = spec_common.drop or name .. "_off"
 	spec_common.on_blast = spec_common.on_blast or mesecon.on_blastnode

mods/ITEMS/REDSTONE/mesecons_button/init.lua

@@ -211,6 +211,11 @@ function mesecon.register_button(basename, description, texture, recipeitem, sou
 		output = "mesecons_button:button_"..basename.."_off",
 		recipe = {{ recipeitem }},
 	})
+
+	if minetest.get_modpath("mesecons_mvps") then
+		mesecon.register_mvps_unsticky("mesecons_button:button_"..basename.."_off")
+		mesecon.register_mvps_unsticky("mesecons_button:button_"..basename.."_on")
+	end
 end
 
 mesecon.register_button(

mods/ITEMS/REDSTONE/mesecons_mvps/init.lua

@@ -117,7 +117,7 @@ local function is_available(pos)
 		return false, n
 	end
 	if minetest.registered_nodes[name] then
-		return minetest.registered_nodes[name].buildable_to, n or false, n
+		return minetest.registered_nodes[name].buildable_to or minetest.get_item_group(name, "dig_by_piston") == 1, n or false, n
 	end
 	return false, n
 end
@@ -126,6 +126,7 @@ end
 function mesecon.mvps_get_stack(pos, dir, maximum, piston_pos)
 	-- determine the number of nodes to be pushed
 	local nodes = {}
+	local dig_nodes = {}
 	local frontiers = {pos}
 
 	while #frontiers > 0 do
@@ -140,22 +141,24 @@ function mesecon.mvps_get_stack(pos, dir, maximum, piston_pos)
 			return
 		end
 
+		if minetest.get_item_group(nn.name, "dig_by_piston") == 1 then
+			-- if we want the node to drop, e.g. sugar cane, do not count towards push limit
+			table.insert(dig_nodes, {node = nn, pos = {x=np.x, y=np.y, z=np.z}})
+		else
 			if not node_replaceable(nn.name) then
-			if #nodes >= maximum then return nil, false end
 				table.insert(nodes, {node = nn, pos = {x=np.x, y=np.y, z=np.z}})
+				if #nodes > maximum then return nil, nil, false, true end
 				
 				-- add connected nodes to frontiers, connected is a vector list
 				-- the vectors must be absolute positions
 				local connected = {}
 				local has_loop
-			if minetest.registered_nodes[nn.name]
+				if minetest.registered_nodes[nn.name] and minetest.registered_nodes[nn.name].mvps_sticky then
-			and minetest.registered_nodes[nn.name].mvps_sticky then
 					connected, has_loop = minetest.registered_nodes[nn.name].mvps_sticky(np, nn, piston_pos)
 					if has_loop then
-					return {}, true
+						return {}, {}, true, false
 					end
 				end
-
 				table.insert(connected, vector.add(np, dir))
 				
 				-- Make sure there are no duplicates in frontiers / nodes before
@@ -172,15 +175,16 @@ function mesecon.mvps_get_stack(pos, dir, maximum, piston_pos)
 							duplicate = true
 						end
 					end
-				if not duplicate and not mesecon.is_mvps_stopper(minetest.get_node(cp)) then
+					if not duplicate and not mesecon.is_mvps_stopper(minetest.get_node(cp)) and minetest.get_item_group(nn.name, "dig_by_piston") == 0 then
 						table.insert(frontiers, cp)
 					end
 				end
 			end
+		end
 		table.remove(frontiers, 1)
 	end
 
-	return nodes, false
+	return nodes, dig_nodes, false, false
 end
 
 function mesecon.mvps_set_owner(pos, placer)
@@ -203,6 +207,11 @@ local function are_protected(nodes, player_name)
 end
 
 function mesecon.mvps_push(pos, dir, maximum, player_name, piston_pos)
+	-- check if the node in front of the piston is protected against player_name (to prevent replacing air)
+	if minetest.is_protected(pos, player_name) then
+		return false
+	end
+
 	return mesecon.mvps_push_or_pull(pos, dir, dir, maximum, player_name, piston_pos)
 end
 
@@ -222,9 +231,9 @@ end
 -- movedir: direction of actual movement
 -- maximum: maximum nodes to be pushed
 function mesecon.mvps_push_or_pull(pos, stackdir, movedir, maximum, player_name, piston_pos)
-	local nodes, has_loop = mesecon.mvps_get_stack(pos, movedir, maximum, piston_pos)
+	local nodes, dig_nodes, has_loop, too_many = mesecon.mvps_get_stack(pos, movedir, maximum, piston_pos)
 
-	if has_loop then
+	if has_loop or too_many then
 		return false
 	end
 
@@ -237,6 +246,9 @@ function mesecon.mvps_push_or_pull(pos, stackdir, movedir, maximum, player_name,
 		if (newpos[i].x == piston_pos.x) and (newpos[i].y == piston_pos.y) and (newpos[i].z == piston_pos.z) then
 			return
 		end
+		if minetest.is_protected(newpos[i], player_name) then
+			return
+		end
 		if not is_available(newpos[i]) then
 			local available = false
 			for j in ipairs(nodes) do
@@ -253,18 +265,35 @@ function mesecon.mvps_push_or_pull(pos, stackdir, movedir, maximum, player_name,
 		end
 	end
 
-	if are_protected(nodes, player_name) then
+	local all_nodes = nodes
+	if dig_nodes and #dig_nodes > 0 then all_nodes = mesecon.join_table(dig_nodes, nodes) end
+	if are_protected(all_nodes, player_name) then
 		return
 	end
 
 	local first_dropper = nil
 	-- remove all nodes
-	for id, n in ipairs(nodes) do
+	for id, n in ipairs(all_nodes) do
 		n.meta = minetest.get_meta(n.pos):to_table()
-		local is_dropper = mesecon.is_mvps_dropper(n.node, movedir, nodes, id)
+		local is_dropper = mesecon.is_mvps_dropper(n.node, movedir, all_nodes, id)
 		if is_dropper then
-			--local drops = minetest.get_node_drops(n.node.name, "")
+			-- if current node has already been destroyed (e.g. chain reaction of sugar cane breaking), skip it
-			minetest.dig_node(n.pos)
+			if minetest.get_node(n.pos).name == n.node.name then
+				-- simulate dig_node using handle_node_drops
+				local drops = minetest.get_node_drops(n.node.name, "")
+				local counted_drops = {}
+				minetest.remove_node(n.pos)
+				for _, callback in pairs(minetest.registered_on_dignodes) do
+					callback(n.pos, n)
+				end
+				for _, item in ipairs(drops) do
+					if type(item) ~= "string" then
+						item = item:get_name() .. item:get_count()
+					end
+					table.insert(counted_drops, item)
+				end
+				minetest.handle_node_drops(n.pos, counted_drops)
+			end
 		else
 			minetest.remove_node(n.pos)
 			local node_timer = minetest.get_node_timer(n.pos)
@@ -273,13 +302,13 @@ function mesecon.mvps_push_or_pull(pos, stackdir, movedir, maximum, player_name,
 			end
 		end
 		if is_dropper then
-			first_dropper = id
+			-- get id of the first dropper, but we still let everything else drop, so don't break here
-			break
+			if not first_dropper then first_dropper = id end
 		end
 	end
 
 	-- update mesecons for removed nodes ( has to be done after all nodes have been removed )
-	for id, n in ipairs(nodes) do
+	for id, n in ipairs(all_nodes) do
 		if first_dropper and id >= first_dropper then
 			break
 		end
@@ -287,7 +316,7 @@ function mesecon.mvps_push_or_pull(pos, stackdir, movedir, maximum, player_name,
 	end
 
 	-- add nodes
-	for id, n in ipairs(nodes) do
+	for id, n in ipairs(all_nodes) do
 		if first_dropper and id >= first_dropper then
 			break
 		end
@@ -394,6 +423,7 @@ mesecon.register_mvps_stopper("mcl_core:realm_barrier")
 mesecon.register_mvps_stopper("mcl_core:void")
 mesecon.register_mvps_stopper("mcl_core:bedrock")
 mesecon.register_mvps_stopper("mcl_core:obsidian")
+mesecon.register_mvps_stopper("mcl_core:crying_obsidian")
 mesecon.register_mvps_stopper("mcl_chests:ender_chest")
 mesecon.register_mvps_stopper("mcl_chests:ender_chest_small")
 mesecon.register_mvps_stopper("mcl_mobspawners:spawner")
@@ -411,10 +441,9 @@ mesecon.register_mvps_stopper("mesecons_solarpanel:solar_panel_inverted_on")
 mesecon.register_mvps_stopper("mesecons_solarpanel:solar_panel_inverted_off")
 mesecon.register_mvps_stopper("mcl_banners:hanging_banner")
 mesecon.register_mvps_stopper("mcl_banners:standing_banner")
-mesecon.register_mvps_stopper("mcl_campfires:campfire")
+mesecon.register_mvps_stopper("mcl_beehives:bee_nest")
-mesecon.register_mvps_stopper("mcl_campfires:campfire_lit")
+mesecon.register_mvps_stopper("mcl_beehives:beehive")
-mesecon.register_mvps_stopper("mcl_campfires:soul_campfire")
+mesecon.register_mvps_stopper("mcl_compass:lodestone")
-mesecon.register_mvps_stopper("mcl_campfires:soul_campfire_lit")
 
 -- Unmovable by technical restrictions.
 -- Open formspec would screw up if node is destroyed (minor problem)
@@ -445,13 +474,14 @@ mesecon.register_mvps_stopper("mcl_chests:trapped_chest")
 mesecon.register_mvps_stopper("mcl_chests:trapped_chest_small")
 mesecon.register_mvps_stopper("mcl_chests:trapped_chest_left")
 mesecon.register_mvps_stopper("mcl_chests:trapped_chest_right")
-mesecon.register_mvps_stopper("mcl_signs:wall_sign")
-mesecon.register_mvps_stopper("mcl_signs:standing_sign")
-mesecon.register_mvps_stopper("mcl_signs:standing_sign22_5")
-mesecon.register_mvps_stopper("mcl_signs:standing_sign45")
-mesecon.register_mvps_stopper("mcl_signs:standing_sign67_5")
 mesecon.register_mvps_stopper("mcl_barrels:barrel_open")
 mesecon.register_mvps_stopper("mcl_barrels:barrel_closed")
+mesecon.register_mvps_stopper("mcl_campfires:campfire")
+mesecon.register_mvps_stopper("mcl_campfires:campfire_lit")
+mesecon.register_mvps_stopper("mcl_campfires:soul_campfire")
+mesecon.register_mvps_stopper("mcl_campfires:soul_campfire_lit")
+mesecon.register_mvps_stopper("mcl_lectern:lectern")
+mesecon.register_mvps_stopper("mcl_grindstone:grindstone")
 
 
 -- Unmovable by design: objects
@@ -495,8 +525,6 @@ mesecon.register_mvps_unsticky("mcl_bamboo:bamboo_2")
 mesecon.register_mvps_unsticky("mcl_bamboo:bamboo_3")
 
 mesecon.register_mvps_unsticky("mcl_bamboo:bamboo_door")
-mesecon.register_mvps_unsticky("mcl_bamboo:bamboo_trapdoor")
-mesecon.register_mvps_unsticky("mcl_signs:wall_sign_bamboo")
 mesecon.register_mvps_unsticky("mcl_bamboo:scaffolding")
 
 -- Beds
@@ -532,21 +560,6 @@ mesecon.register_mvps_unsticky("mcl_beds:bed_white_top")
 mesecon.register_mvps_unsticky("mcl_beds:bed_white_bottom")
 mesecon.register_mvps_unsticky("mcl_beds:bed_yellow_top")
 mesecon.register_mvps_unsticky("mcl_beds:bed_yellow_bottom")
--- Buttons
-mesecon.register_mvps_unsticky("mesecons_button:button_stone_off")
-mesecon.register_mvps_unsticky("mesecons_button:button_stone_on")
-mesecon.register_mvps_unsticky("mesecons_button:button_wood_off")
-mesecon.register_mvps_unsticky("mesecons_button:button_wood_on")
-mesecon.register_mvps_unsticky("mesecons_button:button_acaciawood_off")
-mesecon.register_mvps_unsticky("mesecons_button:button_acaciawood_on")
-mesecon.register_mvps_unsticky("mesecons_button:button_birchwood_off")
-mesecon.register_mvps_unsticky("mesecons_button:button_birchwood_on")
-mesecon.register_mvps_unsticky("mesecons_button:button_darkwood_off")
-mesecon.register_mvps_unsticky("mesecons_button:button_darkwood_on")
-mesecon.register_mvps_unsticky("mesecons_button:button_sprucewood_off")
-mesecon.register_mvps_unsticky("mesecons_button:button_sprucewood_on")
-mesecon.register_mvps_unsticky("mesecons_button:button_junglewood_off")
-mesecon.register_mvps_unsticky("mesecons_button:button_junglewood_on")
 -- Cactus, Sugarcane & Vines
 mesecon.register_mvps_unsticky("mcl_core:cactus")
 mesecon.register_mvps_unsticky("mcl_core:reeds")
@@ -559,23 +572,6 @@ mesecon.register_mvps_unsticky("mcl_cake:cake_4")
 mesecon.register_mvps_unsticky("mcl_cake:cake_5")
 mesecon.register_mvps_unsticky("mcl_cake:cake_6")
 mesecon.register_mvps_unsticky("mcl_cake:cake")
--- Carpet
-mesecon.register_mvps_unsticky("mcl_wool:black_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:blue_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:brown_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:cyan_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:green_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:grey_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:light_blue_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:lime_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:orange_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:magenta_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:pink_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:purple_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:red_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:silver_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:white_carpet")
-mesecon.register_mvps_unsticky("mcl_wool:yellow_carpet")
 -- Carved & Jack O'Lantern Pumpkins, Pumpkin & Melon
 mesecon.register_mvps_unsticky("mcl_farming:pumpkin_face")
 mesecon.register_mvps_unsticky("mcl_farming:pumpkin_face_light")
@@ -907,16 +903,16 @@ mesecon.register_mvps_unsticky("mcl_chests:black_shulker_box_small")
 mesecon.register_mvps_unsticky("mcl_chests:blue_shulker_box_small")
 mesecon.register_mvps_unsticky("mcl_chests:brown_shulker_box_small")
 mesecon.register_mvps_unsticky("mcl_chests:cyan_shulker_box_small")
+mesecon.register_mvps_unsticky("mcl_chests:dark_green_shulker_box_small")
+mesecon.register_mvps_unsticky("mcl_chests:dark_grey_shulker_box_small")
+mesecon.register_mvps_unsticky("mcl_chests:lightblue_shulker_box_small")
 mesecon.register_mvps_unsticky("mcl_chests:green_shulker_box_small")
-mesecon.register_mvps_unsticky("mcl_chests:grey_shulker_box_small")
-mesecon.register_mvps_unsticky("mcl_chests:light_blue_shulker_box_small")
-mesecon.register_mvps_unsticky("mcl_chests:lime_shulker_box_small")
 mesecon.register_mvps_unsticky("mcl_chests:orange_shulker_box_small")
 mesecon.register_mvps_unsticky("mcl_chests:magenta_shulker_box_small")
 mesecon.register_mvps_unsticky("mcl_chests:pink_shulker_box_small")
-mesecon.register_mvps_unsticky("mcl_chests:purple_shulker_box_small")
+mesecon.register_mvps_unsticky("mcl_chests:violet_shulker_box_small")
 mesecon.register_mvps_unsticky("mcl_chests:red_shulker_box_small")
-mesecon.register_mvps_unsticky("mcl_chests:silver_shulker_box_small")
+mesecon.register_mvps_unsticky("mcl_chests:grey_shulker_box_small")
 mesecon.register_mvps_unsticky("mcl_chests:white_shulker_box_small")
 mesecon.register_mvps_unsticky("mcl_chests:yellow_shulker_box_small")
 -- Snow

mods/ITEMS/REDSTONE/mesecons_pistons/init.lua

@@ -138,8 +138,6 @@ local function piston_off(pos, node)
 end
 
 local function piston_orientate(pos, placer)
-	mesecon.mvps_set_owner(pos, placer)
-
 	-- not placed by player
 	if not placer then return end
 	
@@ -153,6 +151,9 @@ local function piston_orientate(pos, placer)
 	elseif pitch < -55 then
 		minetest.add_node(pos, {name=pistonspec.piston_down})
 	end
+
+	-- set owner meta after setting node, or it will not keep
+	mesecon.mvps_set_owner(pos, placer)
 end
 
 

mods/ITEMS/mcl_bamboo/bamboo_base.lua

@@ -251,7 +251,7 @@ local bamboo_def = {
 minetest.register_node(BAMBOO, bamboo_def)
 
 local bamboo_top = table.copy(bamboo_def)
-bamboo_top.groups = {not_in_creative_inventory = 1, handy = 1, axey = 1, choppy = 1, flammable = 3}
+bamboo_top.groups = {not_in_creative_inventory = 1, handy = 1, axey = 1, choppy = 1, dig_by_piston = 1, plant = 1, non_mycelium_plant = 1, flammable = 3}
 bamboo_top.tiles = {"mcl_bamboo_endcap.png"}
 bamboo_top.drawtype = "plantlike_rooted" --"plantlike"
 --bamboo_top.paramtype2 = "meshoptions"
@@ -361,7 +361,7 @@ bamboo_one_def.selection_box = {
 		{-0.05, -0.5, 0.285, -0.275, 0.5, 0.06},
 	}
 }
-bamboo_one_def.groups = {not_in_creative_inventory = 1, handy = 1, axey = 1, choppy = 1, flammable = 3}
+bamboo_one_def.groups = {not_in_creative_inventory = 1, handy = 1, axey = 1, choppy = 1, dig_by_piston = 1, plant = 1, non_mycelium_plant = 1, flammable = 3}
 mcl_bamboo.mcl_log(dump(mcl_bamboo.bamboo_index))
 minetest.register_node(mcl_bamboo.bamboo_index[2], bamboo_one_def)
 local bamboo_two_def = table.copy(bamboo_def)
@@ -385,7 +385,7 @@ bamboo_two_def.selection_box = {
 		{0.25, -0.5, 0.325, 0.025, 0.5, 0.100},
 	}
 }
-bamboo_two_def.groups = {not_in_creative_inventory = 1, handy = 1, axey = 1, choppy = 1, flammable = 3}
+bamboo_two_def.groups = {not_in_creative_inventory = 1, handy = 1, axey = 1, choppy = 1, dig_by_piston = 1, plant = 1, non_mycelium_plant = 1, flammable = 3}
 minetest.register_node(mcl_bamboo.bamboo_index[3], bamboo_two_def)
 local bamboo_three_def = table.copy(bamboo_def)
 
@@ -408,5 +408,5 @@ bamboo_three_def.selection_box = {
 		{-0.125, -0.5, 0.125, -0.3125, 0.5, 0.3125},
 	}
 }
-bamboo_three_def.groups = {not_in_creative_inventory = 1, handy = 1, axey = 1, choppy = 1, flammable = 3}
+bamboo_three_def.groups = {not_in_creative_inventory = 1, handy = 1, axey = 1, choppy = 1, dig_by_piston = 1, plant = 1, non_mycelium_plant = 1, flammable = 3}
 minetest.register_node(mcl_bamboo.bamboo_index[4], bamboo_three_def)

mods/ITEMS/mcl_bamboo/globals.lua

@@ -67,7 +67,7 @@ end
 
 local BAMBOO_ENDCAP_NAME = "mcl_bamboo:bamboo_endcap"
 
--- For when I learn more about the pistons...
+-- check if supporting block is broken. pistons now break the bamboo plant.
 function mcl_bamboo.break_orphaned(pos)
 	mcl_bamboo.mcl_log("Break_Orphaned called.")
 	local node_below = minetest.get_node(vector.offset(pos, 0, -1, 0))

mods/ITEMS/mcl_bells/init.lua

@@ -33,7 +33,7 @@ minetest.register_node("mcl_bells:bell", {
 		"mcl_bells_bell_side.png",
 	},
 	is_ground_content = false,
-	groups = {pickaxey=2, deco_block=1 },
+	groups = {pickaxey=2, deco_block=1, dig_by_piston=1 },
 	sounds = mcl_sounds.node_sound_metal_defaults(),
 	_mcl_blast_resistance = 5,
 	_mcl_hardness = 5,

mods/ITEMS/mcl_core/nodes_misc.lua

@@ -139,8 +139,8 @@ minetest.register_node("mcl_core:deadbush", {
 	sunlight_propagates = true,
 	walkable = false,
 	buildable_to = true,
-	groups = {handy = 1, shearsy = 1, flammable = 3, attached_node = 1, plant = 1, non_mycelium_plant = 1, dig_by_water = 1,
+	groups = {handy = 1, shearsy = 1, flammable = 3, attached_node = 1, plant = 1, non_mycelium_plant = 1, dig_by_piston = 1,
-		destroy_by_lava_flow = 1, deco_block = 1, fire_encouragement = 60, fire_flammability = 100},
+	    dig_by_water = 1, destroy_by_lava_flow = 1, deco_block = 1, fire_encouragement = 60, fire_flammability = 100},
 	drop = {
 		max_items = 1,
 		items = {

mods/ITEMS/mcl_flowers/init.lua

@@ -128,8 +128,6 @@ local fortune_wheat_seed_drop = {
 	overwrite = true,
 }
 
--- CHECKME: How does tall grass behave when pushed by a piston?
-
 --- Tall Grass ---
 local def_tallgrass = {
 	description = S("Tall Grass"),
@@ -155,7 +153,7 @@ local def_tallgrass = {
 	groups = {
 		handy = 1, shearsy = 1, attached_node = 1, deco_block = 1,
 		plant = 1, place_flowerlike = 2, non_mycelium_plant = 1,
-		flammable = 3, fire_encouragement = 60, fire_flammability = 100,
+		flammable = 3, fire_encouragement = 60, fire_flammability = 10, dig_by_piston = 1,
 		dig_by_water = 1, destroy_by_lava_flow = 1, compostability = 30, grass_palette = 1
 	},
 	sounds = mcl_sounds.node_sound_leaves_defaults(),
@@ -252,7 +250,7 @@ local function add_large_plant(name, desc, longdesc, bottom_img, top_img, inv_im
 		paramtype2 = paramtype2,
 		palette = palette,
 		walkable = false,
-		buildable_to = true,
+		buildable_to = false,
 		drop = drop_bottom,
 		_mcl_shears_drop = shears_drop,
 		_mcl_fortune_drop = fortune_drop,
@@ -354,7 +352,7 @@ local function add_large_plant(name, desc, longdesc, bottom_img, top_img, inv_im
 		paramtype2 = paramtype2,
 		palette = palette,
 		walkable = false,
-		buildable_to = true,
+		buildable_to = false,
 		selection_box = {
 			type = "fixed",
 			fixed = { -selbox_radius, -0.5, -selbox_radius, selbox_radius, selbox_top_height, selbox_radius },

mods/ITEMS/mcl_lanterns/init.lua

@@ -118,7 +118,7 @@ function mcl_lanterns.register_lantern(name, def)
 		node_placement_prediction = "",
 		sunlight_propagates = true,
 		light_source = def.light_level,
-		groups = {pickaxey = 1, attached_node = 1, deco_block = 1, lantern = 1},
+		groups = {pickaxey = 1, attached_node = 1, deco_block = 1, lantern = 1, dig_by_piston=1},
 		selection_box = {
 			type = "fixed",
 			fixed = {

mods/ITEMS/mcl_signs/signs_api.lua

@@ -85,7 +85,7 @@ end
 mcl_signs = {}
 
 -- GLOBALS
-mcl_signs.sign_groups = { handy = 1, axey = 1, deco_block = 1, material_wood = 1, attached_node = 1, dig_by_piston = 1, flammable = -1 }
+mcl_signs.sign_groups = { handy = 1, axey = 1, deco_block = 1, material_wood = 1, attached_node = 1, flammable = -1 }
 --- colors used for wools.
 mcl_signs.mcl_wool_colors = {
 	unicolor_white = "#FFFFFF",
@@ -764,6 +764,15 @@ function mcl_signs.register_sign (modname, color, _name, ttsign)
 	table.insert(mcl_signs.standing_rotation_levels, { "mcl_signs:standing_sign22_5" .. _name, 1 })
 	table.insert(mcl_signs.standing_rotation_levels, { "mcl_signs:standing_sign45" .. _name, 2 })
 	table.insert(mcl_signs.standing_rotation_levels, { "mcl_signs:standing_sign67_5" .. _name, 3 })
+
+	-- register as unpushable
+	if minetest.get_modpath("mesecons_mvps") then
+		mesecon.register_mvps_stopper("mcl_signs:wall_sign" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign22_5" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign45" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign67_5" .. _name)
+	end
 end
 
 --- The same as register_sign, except caller defines the textures. Note, there is a greyscale version of the sign,
@@ -1002,6 +1011,14 @@ function mcl_signs.register_sign_custom (modname, _name, tiles, color, inventory
 	table.insert(mcl_signs.standing_rotation_levels, { "mcl_signs:standing_sign45" .. _name, 2 })
 	table.insert(mcl_signs.standing_rotation_levels, { "mcl_signs:standing_sign67_5" .. _name, 3 })
 
+	-- register as unpushable
+	if minetest.get_modpath("mesecons_mvps") then
+		mesecon.register_mvps_stopper("mcl_signs:wall_sign" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign22_5" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign45" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign67_5" .. _name)
+	end
 end
 
 --- Override an existing sign, tint the textures, and gives it an unique node name. Creates both wall and standing signs.
@@ -1234,6 +1251,15 @@ function mcl_signs.reregister_sign (modname, color, _name, ttsign)
 	table.insert(mcl_signs.standing_rotation_levels, { "mcl_signs:standing_sign22_5" .. _name, 1 })
 	table.insert(mcl_signs.standing_rotation_levels, { "mcl_signs:standing_sign45" .. _name, 2 })
 	table.insert(mcl_signs.standing_rotation_levels, { "mcl_signs:standing_sign67_5" .. _name, 3 })
+
+	-- register as unpushable
+	if minetest.get_modpath("mesecons_mvps") then
+		mesecon.register_mvps_stopper("mcl_signs:wall_sign" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign22_5" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign45" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign67_5" .. _name)
+	end
 end
 
 --- The same as reregister_sign, except caller defines the textures. Note, there is a greyscale version of the sign,
@@ -1469,6 +1495,14 @@ function mcl_signs.reregister_sign_custom (modname, _name, tiles, color, invento
 	table.insert(mcl_signs.standing_rotation_levels, { "mcl_signs:standing_sign45" .. _name, 2 })
 	table.insert(mcl_signs.standing_rotation_levels, { "mcl_signs:standing_sign67_5" .. _name, 3 })
 
+	-- register as unpushable
+	if minetest.get_modpath("mesecons_mvps") then
+		mesecon.register_mvps_stopper("mcl_signs:wall_sign" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign22_5" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign45" .. _name)
+		mesecon.register_mvps_stopper("mcl_signs:standing_sign67_5" .. _name)
+	end
 end
 
 --- Usage: Call this with the mod's name, the wood's item string (for the planks), and with the sign's suffix.