is ground content revision (#81)

also cleaned up some of the whitespace indentation
and one occurance where ';' was being used instead of ','

builder.lua

@@ -86,25 +86,26 @@ minetest.register_node("scifi_nodes:builder", {
     on_metadata_inventory_take = function(pos, listname, index, stack, player)
 		local meta = minetest.get_meta(pos)
 		local inv = meta:get_inventory()
-			local istack = inv:get_stack("input", 1)
+		local istack = inv:get_stack("input", 1)
-			local stack_name = istack:get_name()
+		local stack_name = istack:get_name()
-			inv:remove_item("input", stack_name.." 1")
+		inv:remove_item("input", stack_name.." 1")
 
-			inv:set_stack("output", 1, "")
+		inv:set_stack("output", 1, "")
-			inv:set_stack("output", 2, "")
+		inv:set_stack("output", 2, "")
-			inv:set_stack("output", 3, "")
+		inv:set_stack("output", 3, "")
-			inv:set_stack("output", 4, "")
+		inv:set_stack("output", 4, "")
-			inv:set_stack("output", 5, "")
+		inv:set_stack("output", 5, "")
-			inv:set_stack("output", 6, "")
+		inv:set_stack("output", 6, "")
-			inv:set_stack("output", 7, "")
+		inv:set_stack("output", 7, "")
-			inv:set_stack("output", 8, "")
+		inv:set_stack("output", 8, "")
-			inv:set_stack("output", 9, "")
+		inv:set_stack("output", 9, "")
-			inv:set_stack("output", 10, "")
+		inv:set_stack("output", 10, "")
-			inv:set_stack("output", 11, "")
+		inv:set_stack("output", 11, "")
-			inv:set_stack("output", 12, "")
+		inv:set_stack("output", 12, "")
 	end,
 	paramtype = "light",
 	paramtype2 = "facedir",
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults(),
 })

digicode.lua

@@ -102,7 +102,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 	end
     -- play sound at context position
 	minetest.sound_play(sounds[sound_index], {
-	pos = context.pos,
+		pos = context.pos,
 		max_hear_distance = 10
     })
 	context[player:get_player_name()] = nil -- we don't need it anymore
@@ -122,6 +122,7 @@ minetest.register_node("scifi_nodes:digicode_on", {
 	paramtype2 = "wallmounted",
 	light_source = 5,
 	groups = {cracky=1, oddly_breakable_by_hand=1, not_in_creative_inventory=1, mesecon_needs_receiver = 1},
+	is_ground_content = false,
 	drop = "scifi_nodes:digicode_off",
 	mesecons = {
 		receptor = {
@@ -145,6 +146,7 @@ minetest.register_node("scifi_nodes:digicode_off", {
 	paramtype = "light",
 	paramtype2 = "wallmounted",
 	groups = {cracky=1, oddly_breakable_by_hand=1, mesecon_needs_receiver = 1},
+	is_ground_content = false,
 	mesecons = {
 		receptor = {
 			state = (has_mesecons and mesecon.state.off)

doors.lua

@@ -246,6 +246,7 @@ for _, current_door in ipairs(doors) do
 			scifi_nodes_door = 1,
 			door = 1
 		},
+		is_ground_content = false,
 		node_box = {
 			type = "fixed",
 			fixed = {
@@ -279,6 +280,7 @@ for _, current_door in ipairs(doors) do
 		paramtype = "light",
 		paramtype2 = "facedir",
 		groups = {cracky = 1, dig_generic = 3, door = 1},
+		is_ground_content = false,
 		node_box = {
 			type = "fixed",
 			fixed = {
@@ -309,6 +311,7 @@ for _, current_door in ipairs(doors) do
 		paramtype2 = "facedir",
 		drop = closed,
 		groups = {cracky = 1, dig_generic = 3, door = 2},
+		is_ground_content = false,
 		node_box = {
 			type = "fixed",
 			fixed = {
@@ -340,6 +343,7 @@ for _, current_door in ipairs(doors) do
 		paramtype = "light",
 		paramtype2 = "facedir",
 		groups = {cracky = 1, dig_generic = 3, door = 2},
+		is_ground_content = false,
 		node_box = {
 			type = "fixed",
 			fixed = {

forcefield.lua

@@ -6,6 +6,7 @@ minetest.register_node("scifi_nodes:forcefield", {
 		cracky = 1,
 		level = 3
 	},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 	paramtype = "light",
 	light_source = minetest.LIGHT_MAX,

models.lua

@@ -16,29 +16,30 @@ function scifi_nodes.register_slope(name, desc, texture, light, soundtype)
 		drawtype = "mesh",
 		mesh = "scifi_nodes_slope.obj",
 		tiles = texture,
-			selection_box = {
+		selection_box = {
-				type = "fixed",
+			type = "fixed",
-		fixed = {
+			fixed = {
-			{-0.5,  -0.5,  -0.5, 0.5, -0.25, 0.5},
+				{-0.5,  -0.5,  -0.5, 0.5, -0.25, 0.5},
-			{-0.5, -0.25, -0.25, 0.5,     0, 0.5},
+				{-0.5, -0.25, -0.25, 0.5,     0, 0.5},
-			{-0.5,     0,     0, 0.5,  0.25, 0.5},
+				{-0.5,     0,     0, 0.5,  0.25, 0.5},
-			{-0.5,  0.25,  0.25, 0.5,   0.5, 0.5}
+				{-0.5,  0.25,  0.25, 0.5,   0.5, 0.5}
-		}
+			}
-			},
+		},
-			collision_box = {
+		collision_box = {
-				type = "fixed",
+			type = "fixed",
-		fixed = {
+			fixed = {
-			{-0.5,  -0.5,  -0.5, 0.5, -0.25, 0.5},
+				{-0.5,  -0.5,  -0.5, 0.5, -0.25, 0.5},
-			{-0.5, -0.25, -0.25, 0.5,     0, 0.5},
+				{-0.5, -0.25, -0.25, 0.5,     0, 0.5},
-			{-0.5,     0,     0, 0.5,  0.25, 0.5},
+				{-0.5,     0,     0, 0.5,  0.25, 0.5},
-			{-0.5,  0.25,  0.25, 0.5,   0.5, 0.5}
+				{-0.5,  0.25,  0.25, 0.5,   0.5, 0.5}
-		}
+			}
-			},
+		},
 		paramtype = "light",
 		paramtype2 = "facedir",
 		use_texture_alpha = "clip",
 		light_source = light,
 		groups = {cracky=1, dig_generic = 3},
+		is_ground_content = false,
 		on_place = minetest.rotate_node,
 		sounds = sounds,
 	})

nodeboxes.lua

@@ -19,6 +19,7 @@ minetest.register_node("scifi_nodes:alienslope", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -50,6 +51,7 @@ minetest.register_node("scifi_nodes:wallpipe", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -82,6 +84,7 @@ minetest.register_node("scifi_nodes:plant_trap", {
 	walkable = false,
 	sunlight_propagates = false,
 	groups = {snappy=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -108,6 +111,7 @@ minetest.register_node("scifi_nodes:egg", {
 	drawtype = "nodebox",
 	paramtype = "light",
 	groups = {cracky=1, oddly_breakable_by_hand=1, dig_immediate=2, falling_node=1, dig_generic = 3},
+	is_ground_content = false,
 	light_source = 5,
 	node_box = {
 		type = "fixed",
@@ -127,14 +131,14 @@ minetest.register_node("scifi_nodes:egg", {
 })
 
 if minetest.get_modpath("scifi_mobs") then
-minetest.register_abm({
+	minetest.register_abm({
-	nodenames = {"scifi_nodes:egg"},
+		nodenames = {"scifi_nodes:egg"},
-	interval = 30, chance = 10,
+		interval = 30, chance = 10,
-	action = function(pos, node, _, _)
+		action = function(pos, node, _, _)
-		minetest.add_entity(pos, "scifi_mobs:xenomorph")
+			minetest.add_entity(pos, "scifi_mobs:xenomorph")
-		minetest.remove_node(pos)
+			minetest.remove_node(pos)
-	end
+		end
-})
+	})
 end
 
 minetest.register_node("scifi_nodes:pad", {
@@ -150,6 +154,7 @@ minetest.register_node("scifi_nodes:pad", {
 	drawtype = "nodebox",
 	paramtype = "light",
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	light_source = 5,
     after_place_node = function(pos, placer, itemstack, pointed_thing)
         local placer_name = placer:get_player_name()
@@ -168,92 +173,93 @@ minetest.register_node("scifi_nodes:pad", {
         local clicker_name = clicker:get_player_name()
 		local meta = minetest.get_meta(pos)
 		if meta:get_int("type") == 1 and position2 ~= nil and position1 ~= nil then
-		minetest.add_particlespawner(
+			minetest.add_particlespawner(
-			25, --amount
+				25, --amount
-			1.5, --time
+				1.5, --time
-			{x=pos.x-0.9, y=pos.y-0.3, z=pos.z-0.9}, --minpos
+				{x=pos.x-0.9, y=pos.y-0.3, z=pos.z-0.9}, --minpos
-			{x=pos.x+0.9, y=pos.y-0.3, z=pos.z+0.9}, --maxpos
+				{x=pos.x+0.9, y=pos.y-0.3, z=pos.z+0.9}, --maxpos
-			{x=0, y=0, z=0}, --minvel
+				{x=0, y=0, z=0}, --minvel
-			{x=0, y=0, z=0}, --maxvel
+				{x=0, y=0, z=0}, --maxvel
-			{x=-0,y=1,z=-0}, --minacc
+				{x=-0,y=1,z=-0}, --minacc
-			{x=0,y=2,z=0}, --maxacc
+				{x=0,y=2,z=0}, --maxacc
-			0.5, --minexptime
+				0.5, --minexptime
-			1, --maxexptime
+				1, --maxexptime
-			2, --minsize
+				2, --minsize
-			5, --maxsize
+				5, --maxsize
-			false, --collisiondetection
+				false, --collisiondetection
-			"scifi_nodes_tp_part.png" --texture
+				"scifi_nodes_tp_part.png" --texture
-		)
+			)
-		minetest.after(1, function()
+			minetest.after(1, function()
-		local ppos = clicker:getpos()
+				local ppos = clicker:getpos()
-		if minetest.get_node({x=ppos.x, y=ppos.y, z=ppos.z}).name == "scifi_nodes:pad" then
+				if minetest.get_node({x=ppos.x, y=ppos.y, z=ppos.z}).name == "scifi_nodes:pad" then
-			clicker:setpos(position2)
+					clicker:setpos(position2)
-		end
-		local objs = minetest.get_objects_inside_radius(pos, 3)
-                for _, obj in pairs(objs) do
-				if obj:get_luaentity() and not obj:is_player() then
-				if obj:get_luaentity().name == "__builtin:item" then
-				local item1 = obj:get_luaentity().itemstring
-				local obj2 = minetest.add_entity(position2, "__builtin:item")
-				obj2:get_luaentity():set_item(item1)
-				obj:remove()
 				end
+				local objs = minetest.get_objects_inside_radius(pos, 3)
+				for _, obj in pairs(objs) do
+					if obj:get_luaentity() and not obj:is_player() then
+						if obj:get_luaentity().name == "__builtin:item" then
+							local item1 = obj:get_luaentity().itemstring
+							local obj2 = minetest.add_entity(position2, "__builtin:item")
+							obj2:get_luaentity():set_item(item1)
+							obj:remove()
+						end
+					end
 				end
-				end
+			end)
-		end)
 		elseif meta:get_int("type") == 2 and position1 ~= nil and position2 ~= nil then
-		minetest.add_particlespawner(
+			minetest.add_particlespawner(
-			25, --amount
+				25, --amount
-			1.5, --time
+				1.5, --time
-			{x=pos.x-0.9, y=pos.y-0.3, z=pos.z-0.9}, --minpos
+				{x=pos.x-0.9, y=pos.y-0.3, z=pos.z-0.9}, --minpos
-			{x=pos.x+0.9, y=pos.y-0.3, z=pos.z+0.9}, --maxpos
+				{x=pos.x+0.9, y=pos.y-0.3, z=pos.z+0.9}, --maxpos
-			{x=0, y=0, z=0}, --minvel
+				{x=0, y=0, z=0}, --minvel
-			{x=0, y=0, z=0}, --maxvel
+				{x=0, y=0, z=0}, --maxvel
-			{x=-0,y=1,z=-0}, --minacc
+				{x=-0,y=1,z=-0}, --minacc
-			{x=0,y=2,z=0}, --maxacc
+				{x=0,y=2,z=0}, --maxacc
-			0.5, --minexptime
+				0.5, --minexptime
-			1, --maxexptime
+				1, --maxexptime
-			2, --minsize
+				2, --minsize
-			5, --maxsize
+				5, --maxsize
-			false, --collisiondetection
+				false, --collisiondetection
-			"scifi_nodes_tp_part.png" --texture
+				"scifi_nodes_tp_part.png" --texture
-		)
+			)
-		minetest.after(1, function()
+			minetest.after(1, function()
-        local ppos = clicker:getpos()
+				local ppos = clicker:getpos()
-		if minetest.get_node({x=ppos.x, y=ppos.y, z=ppos.z}).name == "scifi_nodes:pad" then
+				if minetest.get_node({x=ppos.x, y=ppos.y, z=ppos.z}).name == "scifi_nodes:pad" then
-			clicker:setpos(position1)
+					clicker:setpos(position1)
-		end
+				end
-		local objs = minetest.get_objects_inside_radius(pos, 3)
+				local objs = minetest.get_objects_inside_radius(pos, 3)
                 for _, obj in pairs(objs) do
-				if obj:get_luaentity() and not obj:is_player() then
+					if obj:get_luaentity() and not obj:is_player() then
-				if obj:get_luaentity().name == "__builtin:item" then
+						if obj:get_luaentity().name == "__builtin:item" then
-				local item1 = obj:get_luaentity().itemstring
+							local item1 = obj:get_luaentity().itemstring
-				local obj2 = minetest.add_entity(position1, "__builtin:item")
+							local obj2 = minetest.add_entity(position1, "__builtin:item")
-				obj2:get_luaentity():set_item(item1)
+							obj2:get_luaentity():set_item(item1)
-				obj:remove()
+							obj:remove()
+						end
+					end
 				end
-				end
+			end)
-				end
-		end)
 		elseif position1 == nil and meta:get_int("type") ~= 2 then
-		position1 = pos
+			position1 = pos
-        meta:set_int("type", 1)
+			meta:set_int("type", 1)
-		minetest.chat_send_player(clicker_name, "Teleporter 1 connected at "..minetest.pos_to_string(pos))
+			minetest.chat_send_player(clicker_name, "Teleporter 1 connected at "..minetest.pos_to_string(pos))
 		elseif position2 == nil and meta:get_int("type") ~= 1 then
-		position2 = pos
+			position2 = pos
-		meta:set_int("type", 2)
+			meta:set_int("type", 2)
-		minetest.chat_send_player(clicker_name, "Teleporter 2 connected at "..minetest.pos_to_string(pos))
+			minetest.chat_send_player(clicker_name, "Teleporter 2 connected at "..minetest.pos_to_string(pos))
-		else minetest.chat_send_player(clicker_name, "Teleporter error!")
+		else
+			minetest.chat_send_player(clicker_name, "Teleporter error!")
 		end
 	end,
 	on_destruct = function(pos, oldnode, placer)
 		local meta = minetest.get_meta(pos)
 		if meta:get_int("type") == 1 then
-		position1 = nil
+			position1 = nil
-		meta:set_int("type", 0)
+			meta:set_int("type", 0)
 		elseif meta:get_int("type") == 2 then
-		position2 = nil
+			position2 = nil
-		meta:set_int("type", 0)
+			meta:set_int("type", 0)
 		end
 	end,
 	node_box = {
@@ -284,6 +290,7 @@ minetest.register_node("scifi_nodes:pplwndw", {
 	use_texture_alpha = "blend",
 	groups = {cracky=3, dig_generic = 4},
 	sounds = scifi_nodes.node_sound_glass_defaults(),
+	is_ground_content = false,
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -310,6 +317,7 @@ minetest.register_node("scifi_nodes:gloshroom", {
 	sunlight_propagates = false,
 	use_texture_alpha = "blend",
 	groups = {fleshy=1, oddly_breakable_by_hand=1, dig_immediate=3},
+	is_ground_content = false,
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -335,6 +343,7 @@ minetest.register_node("scifi_nodes:pot_lid", {
 	drawtype = "nodebox",
 	paramtype = "light",
 	groups = {not_in_creative_inventory = 1},
+	is_ground_content = false,
 	sunlight_propagates = true,
 	diggable = false,
 	drop = "",
@@ -392,6 +401,7 @@ minetest.register_node("scifi_nodes:pot", {
 	drawtype = "nodebox",
 	paramtype = "light",
 	groups = {cracky = 1, soil = 1, sand = 1, dig_generic = 3},
+	is_ground_content = false,
 	selection_box = {
 		type = "fixed",
 		fixed = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5}
@@ -426,6 +436,7 @@ minetest.register_node("scifi_nodes:pot2", {
 	drawtype = "nodebox",
 	paramtype = "light",
 	groups = {cracky = 1, soil = 3, wet = 1, dig_generic = 3},
+	is_ground_content = false,
 	selection_box = {
 		type = "fixed",
 		fixed = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5}
@@ -470,6 +481,7 @@ minetest.register_node("scifi_nodes:lightbar", {
 		}
 	},
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
 
@@ -495,6 +507,7 @@ minetest.register_node("scifi_nodes:light_dynamic", {
 	paramtype2 = "wallmounted",
 	light_source = minetest.LIGHT_MAX,
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
 
@@ -531,6 +544,7 @@ minetest.register_node("scifi_nodes:ladder", {
 	walkable = false,
 	climbable = true,
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 })
 
 minetest.register_node("scifi_nodes:lightbars", {
@@ -553,12 +567,13 @@ minetest.register_node("scifi_nodes:lightbars", {
 		}
 	},
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
 
 minetest.register_node("scifi_nodes:liquid_pipe", {
 	description = "Liquid pipe",
-tiles = {{
+	tiles = {{
 		name = "scifi_nodes_liquid.png",
 		animation = {type = "vertical_frames", aspect_w = 16, aspect_h = 16, length = 1.00},
 	}},
@@ -575,12 +590,13 @@ tiles = {{
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
 
 minetest.register_node("scifi_nodes:liquid_pipe2", {
 	description = "Liquid pipe 2",
-tiles = {
+	tiles = {
 		"scifi_nodes_orange.png",
 	},
 	use_texture_alpha = "blend",
@@ -596,6 +612,7 @@ tiles = {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
 
@@ -626,6 +643,7 @@ minetest.register_node("scifi_nodes:powered_stand", {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	on_rightclick = function(pos, node, clicker, item, _)
 		local wield_item_stack = clicker:get_wielded_item()
 		local wield_item = wield_item_stack:get_name()
@@ -667,7 +685,8 @@ minetest.register_node("scifi_nodes:cover", {
 		}
 	},
 	sounds = scifi_nodes.node_sound_metal_defaults(),
-	groups = {cracky=1, oddly_breakable_by_hand=1}
+	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 })
 
 minetest.register_node("scifi_nodes:computer", {
@@ -691,6 +710,7 @@ minetest.register_node("scifi_nodes:computer", {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults(),
 })
 
@@ -718,6 +738,7 @@ minetest.register_node("scifi_nodes:keysmonitor", {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_defaults(),
 })
 
@@ -746,6 +767,7 @@ minetest.register_node("scifi_nodes:microscope", {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_defaults(),
 })
 
@@ -775,7 +797,8 @@ minetest.register_node("scifi_nodes:table", {
 		}
 	},
 	sounds = scifi_nodes.node_sound_metal_defaults(),
-	groups = {cracky=1, dig_generic = 3}
+	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 })
 
 minetest.register_node("scifi_nodes:laptop_open", {
@@ -800,6 +823,7 @@ minetest.register_node("scifi_nodes:laptop_open", {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1, not_in_creative_inventory=1},
+	is_ground_content = false,
 	on_rightclick = function(pos, node, clicker, item, _)
 			minetest.set_node(pos, {name="scifi_nodes:laptop_closed", param2=node.param2})
 	end,
@@ -827,6 +851,7 @@ minetest.register_node("scifi_nodes:laptop_closed", {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	on_rightclick = function(pos, node, clicker, item, _)
 			minetest.set_node(pos, {name="scifi_nodes:laptop_open", param2=node.param2})
 	end,
@@ -861,6 +886,7 @@ minetest.register_node("scifi_nodes:pipen", {
 		}
 	},
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	on_place = minetest.rotate_node,
 	sounds = scifi_nodes.node_sound_metal_defaults(),
 })
@@ -892,6 +918,7 @@ minetest.register_node("scifi_nodes:windowcorner", {
 		}
 	},
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	on_place = minetest.rotate_node,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 })
@@ -919,6 +946,7 @@ minetest.register_node("scifi_nodes:windowstraight", {
 		}
 	},
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	on_place = minetest.rotate_node,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 })
@@ -950,6 +978,7 @@ minetest.register_node("scifi_nodes:windowcorner2", {
 		}
 	},
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	on_place = minetest.rotate_node,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 })
@@ -977,6 +1006,7 @@ minetest.register_node("scifi_nodes:windowstraight2", {
 		}
 	},
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	on_place = minetest.rotate_node,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 })
@@ -1007,6 +1037,7 @@ minetest.register_node("scifi_nodes:capsule", {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 	on_rightclick = function(pos, node, clicker, item, _)
 			minetest.set_node(pos, {name="scifi_nodes:capsule2", param2=node.param2})
@@ -1037,6 +1068,7 @@ minetest.register_node("scifi_nodes:capsule3", {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1, not_in_creative_inventory=1},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 	on_rightclick = function(pos, node, clicker, item, _)
 			minetest.set_node(pos, {name="scifi_nodes:capsule", param2=node.param2})
@@ -1067,6 +1099,7 @@ minetest.register_node("scifi_nodes:capsule2", {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1, not_in_creative_inventory=1},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 	on_rightclick = function(pos, node, clicker, item, _)
 			minetest.set_node(pos, {name="scifi_nodes:capsule3", param2=node.param2})
@@ -1097,6 +1130,7 @@ minetest.register_node("scifi_nodes:itemholder", {
 		}
 	},
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	on_rotate = minetest.get_modpath("screwdriver") and screwdriver.disallow,
 	after_place_node = function(pos, placer, itemstack)
 		local meta = minetest.get_meta(pos)
@@ -1156,6 +1190,7 @@ minetest.register_node("scifi_nodes:glassscreen", {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 })
 
@@ -1188,6 +1223,7 @@ minetest.register_node("scifi_nodes:widescreen", {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_defaults(),
 })
 
@@ -1219,6 +1255,7 @@ minetest.register_node("scifi_nodes:tallscreen", {
 		}
 	},
 	groups = {cracky=1, oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_defaults(),
 })
 
@@ -1240,6 +1277,7 @@ minetest.register_node("scifi_nodes:windowpanel", {
         }
     },
     groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
     on_place = minetest.rotate_node,
     sounds = scifi_nodes.node_sound_glass_defaults(),
 })

nodes.lua

@@ -11,6 +11,7 @@ minetest.register_node("scifi_nodes:grassblk", {
 			tileable_vertical = false}},
 	light_source = 2,
 	groups = {crumbly=1, oddly_breakable_by_hand=1, soil=1},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_dirt_defaults({
 		footstep = scifi_nodes.node_sound_plant_defaults().footstep,
 	})
@@ -30,6 +31,7 @@ minetest.register_node("scifi_nodes:light", {
 	light_source = 10,
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults(),
 })
 
@@ -42,6 +44,7 @@ minetest.register_node("scifi_nodes:rfloor", {
 	paramtype2 = "facedir",
 	light_source = 10,
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -54,6 +57,7 @@ minetest.register_node("scifi_nodes:bfloor", {
 	paramtype2 = "facedir",
 	light_source = 10,
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -71,6 +75,7 @@ minetest.register_node("scifi_nodes:stripes2", {
 	},
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -86,7 +91,8 @@ minetest.register_node("scifi_nodes:gblock", {
 		"scifi_nodes_gblock.png"
 	},
 	paramtype = "light",
-	groups = {cracky=1, dig_generic = 3};
+	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -104,6 +110,7 @@ minetest.register_node("scifi_nodes:gblock2", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -121,6 +128,7 @@ minetest.register_node("scifi_nodes:gblock3", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -140,6 +148,7 @@ minetest.register_node("scifi_nodes:green_light", {
 	light_source = 10,
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
 
@@ -157,6 +166,7 @@ minetest.register_node("scifi_nodes:red_light", {
 	light_source = 10,
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
 
@@ -173,6 +183,7 @@ minetest.register_node("scifi_nodes:discs", {
 	},
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -187,6 +198,7 @@ minetest.register_node("scifi_nodes:disc", {
 	wield_image = "scifi_nodes_disc.png",
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_defaults(),
 })
 
@@ -203,6 +215,7 @@ minetest.register_node("scifi_nodes:greenbar_animated", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	light_source = 10,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 	on_place = minetest.rotate_node
@@ -217,6 +230,7 @@ minetest.register_node("scifi_nodes:blink", {
 	}},
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	light_source = 5,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
@@ -230,6 +244,7 @@ minetest.register_node("scifi_nodes:black_lights", {
 	}},
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -242,6 +257,7 @@ minetest.register_node("scifi_nodes:black_screen", {
 	}},
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	light_source = 1,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
@@ -255,6 +271,7 @@ minetest.register_node("scifi_nodes:screen", {
 	}},
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	light_source = 5,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
@@ -268,6 +285,7 @@ minetest.register_node("scifi_nodes:screen2", {
 	}},
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	light_source = 5,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
@@ -288,6 +306,7 @@ minetest.register_node("scifi_nodes:white_pad", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -305,6 +324,7 @@ minetest.register_node("scifi_nodes:white_base", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
 
@@ -322,6 +342,7 @@ minetest.register_node("scifi_nodes:grnpipe", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults(),
 	on_place = minetest.rotate_node
 })
@@ -341,6 +362,7 @@ minetest.register_node("scifi_nodes:grnpipe2", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults(),
 	on_place = minetest.rotate_node
 })
@@ -357,6 +379,7 @@ minetest.register_node("scifi_nodes:octrng", {
 	use_texture_alpha = "blend",
 	light_source = 10,
 	groups = {cracky=2, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 })
 
@@ -372,6 +395,7 @@ minetest.register_node("scifi_nodes:octgrn", {
 	use_texture_alpha = "blend",
 	light_source = 10,
 	groups = {cracky=2, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 })
 
@@ -387,6 +411,7 @@ minetest.register_node("scifi_nodes:octbl", {
 	use_texture_alpha = "blend",
 	light_source = 10,
 	groups = {cracky=2, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 })
 
@@ -402,6 +427,7 @@ minetest.register_node("scifi_nodes:octppl", {
 	use_texture_alpha = "blend",
 	light_source = 10,
 	groups = {cracky=2, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults(),
 })
 
@@ -423,6 +449,7 @@ if has_unifieddyes_mod then
 			dig_generic = 3,
 			ud_param2_colorable = 1
 		},
+		is_ground_content = false,
 		sounds = scifi_nodes.node_sound_glass_defaults(),
 		on_construct = unifieddyes.on_construct,
 		on_dig = unifieddyes.on_dig
@@ -441,6 +468,7 @@ minetest.register_node("scifi_nodes:tower", {
 	inventory_image = "scifi_nodes_tower.png",
 	paramtype = "light",
 	groups = {cracky=2, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -459,6 +487,7 @@ minetest.register_node("scifi_nodes:junk", {
 		"scifi_nodes_junk.png"
 	},
 	groups = {snappy=1, oddly_breakable_by_hand=1, liquid=3, dig_immediate=1},
+	is_ground_content = false,
 })
 
 
@@ -476,6 +505,7 @@ minetest.register_node("scifi_nodes:blumetlight", {
 	light_source = 10,
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
 
@@ -489,6 +519,7 @@ minetest.register_node("scifi_nodes:lightstp", {
 	light_source = minetest.LIGHT_MAX,
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
 
@@ -501,6 +532,7 @@ minetest.register_node("scifi_nodes:blklt2", {
 	light_source = 10,
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -513,6 +545,7 @@ minetest.register_node("scifi_nodes:blumetstr", {
 	light_source = 10,
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -526,6 +559,7 @@ minetest.register_node("scifi_nodes:glass", {
 	use_texture_alpha = "blend",
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_glass_defaults()
 })
 
@@ -538,6 +572,7 @@ minetest.register_node("scifi_nodes:whtlightbnd", {
 	light_source = 10,
 	paramtype = "light",
 	groups = {cracky=1, dig_generic = 3},
+	is_ground_content = false,
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
 
@@ -568,6 +603,7 @@ for name, def in pairs(nodes) do
 		description = def.description,
 		tiles = tiles,
 		groups = {cracky=1, dig_generic = 3},
+		is_ground_content = false,
 		paramtype = "light",
 		paramtype2 = def.paramtype2 or "facedir",
 		light_source = def.light,
@@ -594,6 +630,7 @@ for name, def in pairs(nodes) do
 				ud_param2_colorable = 1,
 				not_in_creative_inventory = 1
 			},
+			is_ground_content = false,
 			palette = "unifieddyes_palette_extended.png",
 			paramtype = "light",
 			paramtype2 = "color",

palm_scanner.lua

@@ -59,6 +59,7 @@ minetest.register_node("scifi_nodes:palm_scanner_off", {
 	paramtype = "light",
 	paramtype2 = "wallmounted",
 	groups = {cracky=1, oddly_breakable_by_hand=1, mesecon_needs_receiver = 1},
+	is_ground_content = false,
 	mesecons = {
 		receptor = {
 			state = (has_mesecons and mesecon.state.off)
@@ -82,6 +83,7 @@ minetest.register_node("scifi_nodes:palm_scanner_checking", {
 	paramtype = "light",
 	paramtype2 = "wallmounted",
 	groups = {cracky=1, oddly_breakable_by_hand=1, not_in_creative_inventory=1, mesecon_needs_receiver = 1},
+	is_ground_content = false,
 	drop = "scifi_nodes:palm_scanner_off",
 	sounds = scifi_nodes.node_sound_metal_defaults()
 })
@@ -100,6 +102,7 @@ minetest.register_node("scifi_nodes:palm_scanner_on", {
 	paramtype2 = "wallmounted",
 	light_source = 5,
 	groups = {cracky=1, oddly_breakable_by_hand=1, not_in_creative_inventory=1, mesecon_needs_receiver = 1},
+	is_ground_content = false,
 	drop = "scifi_nodes:palm_scanner_off",
 	mesecons = {
 		receptor = {

protected_switch.lua

@@ -46,6 +46,7 @@ minetest.register_node("scifi_nodes:protected_switch_on", {
 		not_in_creative_inventory = 1,
 		mesecon_needs_receiver = 1
 	},
+	is_ground_content = false,
 	mesecons = {
 		receptor = {
 			state = (has_mesecons and mesecon.state.on)
@@ -73,6 +74,7 @@ minetest.register_node("scifi_nodes:protected_switch_off", {
 		oddly_breakable_by_hand = 1,
 		mesecon_needs_receiver = 1
 	},
+	is_ground_content = false,
 	mesecons = {
 		receptor = {
 			state = (has_mesecons and mesecon.state.off)

switch.lua

@@ -39,6 +39,7 @@ minetest.register_node("scifi_nodes:switch_on", {
 		not_in_creative_inventory = 1,
 		mesecon_needs_receiver = 1
 	},
+	is_ground_content = false,
 	mesecons = {
 		receptor = {
 			state = (has_mesecons and mesecon.state.on)
@@ -66,6 +67,7 @@ minetest.register_node("scifi_nodes:switch_off", {
 		oddly_breakable_by_hand = 1,
 		mesecon_needs_receiver = 1
 	},
+	is_ground_content = false,
 	mesecons = {
 		receptor = {
 			state = (has_mesecons and mesecon.state.off)