Fix bad is_ground_content across all mods

mods/beds/init.lua

@@ -49,6 +49,7 @@ minetest.register_node("beds:bed_bottom", {
 	wield_image = "beds_bed.png",
 	wield_scale = {x=0.8,y=2.5,z=1.3},
 	drawtype = "nodebox",
+	is_ground_content = false,
 	tiles = {"beds_bed_top_bottom.png^[transformR90", "default_wood.png",  "beds_bed_side_bottom_r.png",  "beds_bed_side_bottom_r.png^[transformfx", "beds_bed_leer.png", "beds_bed_side_bottom.png"},
 	paramtype = "light",
 	paramtype2 = "facedir",
@@ -149,6 +150,7 @@ minetest.register_node("beds:bed_top", {
 	tiles = {"beds_bed_top_top.png^[transformR90", "beds_bed_leer.png",  "beds_bed_side_top_r.png",  "beds_bed_side_top_r.png^[transformfx",  "beds_bed_side_top.png", "beds_bed_leer.png"},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=3},
 	sounds = default.node_sound_wood_defaults(),
 	node_box = {

mods/cake/init.lua

@@ -25,6 +25,7 @@ minetest.register_node("cake:cake", {
 	description = "Cake",
 	tiles = {"cake_top.png","cake_bottom.png","cake_side.png","cake_side.png","cake_side.png","cake_side.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	drawtype = "nodebox",
 	selection_box = {
 		type = "fixed",
@@ -34,7 +35,6 @@ minetest.register_node("cake:cake", {
 		type = "fixed",
 			fixed = slice_6
 		},
-	is_ground_content = true,
 	stack_max = 1,
 	groups = {crumbly=3,falling_node=1},
 	drop = '',
@@ -47,9 +47,10 @@ minetest.register_node("cake:cake", {
 	end,
 })
 minetest.register_node("cake:cake_5", {
-	description = "Cake [5 Slices Left]",
+	description = "Cake (5 Slices Left)",
 	tiles = cake_texture,
 	paramtype = "light",
+	is_ground_content = false,
 	drawtype = "nodebox",
 	selection_box = {
 		type = "fixed",
@@ -59,7 +60,6 @@ minetest.register_node("cake:cake_5", {
 		type = "fixed",
 			fixed = slice_5
 		},
-	is_ground_content = true,
 	groups = {crumbly=3,falling_node=1,not_in_creative_inventory=1},
 	drop = '',
 	--legacy_mineral = true,
@@ -71,9 +71,10 @@ minetest.register_node("cake:cake_5", {
 	end,
 })
 minetest.register_node("cake:cake_4", {
-	description = "Cake [4 Slices Left]",
+	description = "Cake (4 Slices Left)",
 	tiles = cake_texture,
 	paramtype = "light",
+	is_ground_content = false,
 	drawtype = "nodebox",
 	selection_box = {
 		type = "fixed",
@@ -83,7 +84,6 @@ minetest.register_node("cake:cake_4", {
 		type = "fixed",
 			fixed = slice_4
 		},
-	is_ground_content = true,
 	groups = {crumbly=3,falling_node=1,not_in_creative_inventory=1},
 	drop = '',
 	--legacy_mineral = true,
@@ -95,9 +95,10 @@ minetest.register_node("cake:cake_4", {
 	end,
 })
 minetest.register_node("cake:cake_3", {
-	description = "Cake [3 Slices Left]",
+	description = "Cake (3 Slices Left)",
 	tiles = cake_texture,
 	paramtype = "light",
+	is_ground_content = false,
 	drawtype = "nodebox",
 	selection_box = {
 		type = "fixed",
@@ -107,7 +108,6 @@ minetest.register_node("cake:cake_3", {
 		type = "fixed",
 			fixed = slice_3
 		},
-	is_ground_content = true,
 	groups = {crumbly=3,falling_node=1,not_in_creative_inventory=1},
 	drop = '',
 	--legacy_mineral = true,
@@ -119,9 +119,10 @@ minetest.register_node("cake:cake_3", {
 	end,
 })
 minetest.register_node("cake:cake_2", {
-	description = "Cake [2 Slices Left]",
+	description = "Cake (2 Slices Left)",
 	tiles = cake_texture,
 	paramtype = "light",
+	is_ground_content = false,
 	drawtype = "nodebox",
 	selection_box = {
 		type = "fixed",
@@ -131,7 +132,6 @@ minetest.register_node("cake:cake_2", {
 		type = "fixed",
 			fixed = slice_2
 		},
-	is_ground_content = true,
 	groups = {crumbly=3,falling_node=1,not_in_creative_inventory=1},
 	drop = '',
 	--legacy_mineral = true,
@@ -143,9 +143,10 @@ minetest.register_node("cake:cake_2", {
 	end,
 })
 minetest.register_node("cake:cake_1", {
-	description = "Cake [1 Slice Left]",
+	description = "Cake (1 Slice Left)",
 	tiles = cake_texture,
 	paramtype = "light",
+	is_ground_content = false,
 	drawtype = "nodebox",
 	selection_box = {
 		type = "fixed",
@@ -155,7 +156,6 @@ minetest.register_node("cake:cake_1", {
 		type = "fixed",
 			fixed = slice_1
 		},
-	is_ground_content = true,
 	groups = {crumbly=3,falling_node=1,not_in_creative_inventory=1},
 	drop = '',
 	--legacy_mineral = true,
@@ -165,4 +165,4 @@ minetest.register_node("cake:cake_1", {
 			minetest.env:remove_node(pos)
 		end
 	end,
-})
+})

mods/default/functions.lua

@@ -901,6 +901,7 @@ function AddGlass(desc, recipeitem, color)
 	minetest.register_node("default:glass_"..color, {
 		description = desc,
 		drawtype = "glasslike",
+		is_ground_content = false,
 		tile_images = {"xpanes_pane_glass_"..color..".png"},
 		inventory_image = minetest.inventorycube("xpanes_pane_glass_"..color..".png"),
 		paramtype = "light",

mods/default/nodes.lua

@@ -179,6 +179,7 @@ minetest.register_node("default:stonebrick", {
 minetest.register_node("default:stonebrickcarved", {
 	description = "Chiseled Stone Bricks",
 	tiles = {"default_stonebrick_carved.png"},
+	is_ground_content = false,
 	stack_max = 64,
 	groups = {cracky=3, stone=1},
 	sounds = default.node_sound_stone_defaults(),
@@ -187,6 +188,7 @@ minetest.register_node("default:stonebrickcarved", {
 minetest.register_node("default:stonebrickcracked", {
 	description = "Cracked Stone Bricks",
 	tiles = {"default_stonebrick_cracked.png"},
+	is_ground_content = false,
 	stack_max = 64,
 	groups = {cracky=3, stone=1},
 	sounds = default.node_sound_stone_defaults(),
@@ -344,6 +346,7 @@ minetest.register_node("default:clay", {
 minetest.register_node("default:brick", {
 	description = "Bricks",
 	tiles = {"default_brick.png"},
+	is_ground_content = false,
 	stack_max = 64,
 	groups = {cracky=3},
 	sounds = default.node_sound_stone_defaults(),
@@ -352,6 +355,7 @@ minetest.register_node("default:brick", {
 minetest.register_node("default:haybale", {
 	description = "Hay Bale",
 	tiles = {"default_hayblock_top.png", "default_hayblock_top.png", "default_hayblock_side.png"},
+	is_ground_content = true,
 	stack_max = 64,
 	paramtype2 = "facedir",
 	is_ground_content = false,
@@ -363,6 +367,7 @@ minetest.register_node("default:haybale", {
 minetest.register_node("default:sea_lantern", {
 	description = "Sea Lantern",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	stack_max = 64,
 	light_source = 14,
 	drop = {
@@ -377,24 +382,27 @@ minetest.register_node("default:sea_lantern", {
 })
 
 minetest.register_node("default:prismarine", {
-     description = "Prismarine",
+	description = "Prismarine",
-	 stack_max = 64,
+	stack_max = 64,
-     tiles = {{name="default_prismarine_anim.png", animation={type="vertical_frames", aspect_w=32, aspect_h=32, length=45.0}}},
+	is_ground_content = false,
-     groups = {cracky=3},
+	tiles = {{name="default_prismarine_anim.png", animation={type="vertical_frames", aspect_w=32, aspect_h=32, length=45.0}}},
+	groups = {cracky=3},
 })
 
 minetest.register_node("default:prismarine_brick", {
-     description = "Prismarine Bricks",
+	description = "Prismarine Bricks",
-	 stack_max = 64,
+	stack_max = 64,
-     tiles = {"default_prismarine_bricks.png"},
+	is_ground_content = false,
-     groups = {cracky=2},
+	tiles = {"default_prismarine_bricks.png"},
+	groups = {cracky=2},
 })
 
 minetest.register_node("default:prismarine_dark", {
-     description = "Dark Prismarine",
+	description = "Dark Prismarine",
-	 stack_max = 64,
+	stack_max = 64,
-     tiles = {"default_prismarine_dark.png"},
+	is_ground_content = false,
-     groups = {cracky=2},
+	tiles = {"default_prismarine_dark.png"},
+	groups = {cracky=2},
 })
 
 
@@ -405,7 +413,6 @@ minetest.register_node("default:tree", {
 	description = "Wood",
 	tiles = {"default_tree_top.png", "default_tree_top.png", "default_tree.png"},
 	paramtype2 = "facedir",
-	is_ground_content = false,
 	on_place = minetest.rotate_node,
 	stack_max = 64,
 	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
@@ -463,7 +470,6 @@ minetest.register_node("default:jungletree", {
 	tiles = {"default_jungletree_top.png", "default_jungletree_top.png", "default_jungletree.png"},
 	stack_max = 64,
 	paramtype2 = "facedir",
-	is_ground_content = false,
 	on_place = minetest.rotate_node,
 	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
 	sounds = default.node_sound_wood_defaults(),
@@ -473,6 +479,7 @@ minetest.register_node("default:junglewood", {
 	description = "Jungle Wood Planks",
 	tiles = {"default_junglewood.png"},
 	stack_max = 64,
+	is_ground_content = false,
 	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1},
 	sounds = default.node_sound_wood_defaults(),
 })
@@ -523,7 +530,6 @@ minetest.register_node("default:acaciatree", {
 	tiles = {"default_acaciatree_top.png", "default_acaciatree_top.png", "default_acaciatree.png"},
 	stack_max = 64,
 	paramtype2 = "facedir",
-	is_ground_content = false,
 	on_place = minetest.rotate_node,
 	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
 	sounds = default.node_sound_wood_defaults(),
@@ -533,6 +539,7 @@ minetest.register_node("default:acaciawood", {
 	description = "Acacia Wood Planks",
 	tiles = {"default_acaciawood.png"},
 	stack_max = 64,
+	is_ground_content = false,
 	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1},
 	sounds = default.node_sound_wood_defaults(),
 })
@@ -582,7 +589,6 @@ minetest.register_node("default:sprucetree", {
 	tiles = {"default_sprucetree_top.png", "default_sprucetree_top.png", "default_sprucetree.png"},
 	stack_max = 64,
 	paramtype2 = "facedir",
-	is_ground_content = false,
 	on_place = minetest.rotate_node,
 	groups = {tree=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
 	sounds = default.node_sound_wood_defaults(),
@@ -592,6 +598,7 @@ minetest.register_node("default:sprucewood", {
 	description = "Spruce Wood Planks",
 	tiles = {"default_sprucewood.png"},
 	stack_max = 64,
+	is_ground_content = false,
 	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1},
 	sounds = default.node_sound_wood_defaults(),
 })
@@ -728,12 +735,13 @@ minetest.register_node("default:reeds", {
 
 
 minetest.register_node("default:quartz_ore", {
-    description = "Nether Quartz Ore",
+	description = "Nether Quartz Ore",
 	stack_max = 64,
  	tiles = {"default_quartz_ore.png"},
+	is_ground_content = false,
 	groups = {cracky=3,},
 	drop = 'default:quartz_crystal',
-    sounds = default.node_sound_stone_defaults(),
+	sounds = default.node_sound_stone_defaults(),
 })
 	 
 minetest.register_node("default:quartz_block", {
@@ -747,6 +755,7 @@ minetest.register_node("default:quartz_block", {
 minetest.register_node("default:quartz_chiseled", {
 	description = "Chiseled Quartz",
 	stack_max = 64,
+	is_ground_content = false,
 	tiles = {"default_quartz_chiseled_top.png", "default_quartz_chiseled_top.png", "default_quartz_chiseled_side.png"},
 	groups = {snappy=1,bendy=2,cracky=1,level=2},
 	sounds = default.node_sound_stone_defaults(),
@@ -756,6 +765,7 @@ minetest.register_node("default:quartz_pillar", {
 	description = "Pillar Quartz Block",
 	stack_max = 64,
 	paramtype2 = "facedir",
+	is_ground_content = true,
 	on_place = minetest.rotate_node,
 	tiles = {"default_quartz_pillar_top.png", "default_quartz_pillar_top.png", "default_quartz_pillar_side.png"},
 	groups = {snappy=1,bendy=2,cracky=1,level=2},
@@ -779,6 +789,7 @@ minetest.register_node("default:bookshelf", {
 	description = "Bookshelf",
 	tiles = {"default_wood.png", "default_wood.png", "default_bookshelf.png"},
 	stack_max = 64,
+	is_ground_content = false,
 	groups = {choppy=3,oddly_breakable_by_hand=2,flammable=3},
 	drop = "default:book 3",
 	sounds = default.node_sound_wood_defaults(),
@@ -788,6 +799,7 @@ minetest.register_node("default:slimeblock", {
 	description = "Slime Block",
 	drawtype = "nodebox",
 	paramtype = "light",
+	is_ground_content = false,
 	node_box = {
 		type = "fixed",
 		fixed = {
@@ -808,6 +820,7 @@ minetest.register_node("default:slimeblock", {
 minetest.register_node("default:glass", {
 	description = "Glass",
 	drawtype = "glasslike",
+	is_ground_content = false,
 	tiles = {"default_glass.png"},
 	paramtype = "light",
 	sunlight_propagates = true,
@@ -839,6 +852,7 @@ minetest.register_node("default:rail", {
 	description = "Rail",
 	drawtype = "raillike",
 	tiles = {"default_rail.png", "default_rail_curved.png", "default_rail_t_junction.png", "default_rail_crossing.png"},
+	is_ground_content = false,
 	inventory_image = "default_rail.png",
 	wield_image = "default_rail.png",
 	paramtype = "light",
@@ -855,6 +869,7 @@ minetest.register_node("default:rail", {
 minetest.register_node("default:ladder", {
 	description = "Ladder",
 	drawtype = "signlike",
+	is_ground_content = false,
 	tiles = {"default_ladder.png"},
 	inventory_image = "default_ladder.png",
 	wield_image = "default_ladder.png",
@@ -920,6 +935,7 @@ minetest.register_node("default:wood", {
 	description = "Wood Planks",
 	tiles = {"default_wood.png"},
 	stack_max = 64,
+	is_ground_content = false,
 	groups = {choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1},
 	sounds = default.node_sound_wood_defaults(),
 })
@@ -1113,6 +1129,7 @@ minetest.register_node("default:chest", {
 	stack_max = 64,
 	groups = {choppy=2,oddly_breakable_by_hand=2},
 	legacy_facedir_simple = true,
+	is_ground_content = false,
 	sounds = default.node_sound_wood_defaults(),
 	on_construct = function(pos)
 		local param2 = minetest.env:get_node(pos).param2
@@ -1200,6 +1217,7 @@ minetest.register_node("default:chest_left", {
 	paramtype2 = "facedir",
 	groups = {choppy=2,oddly_breakable_by_hand=2,not_in_creative_inventory=1},
 	drop = "default:chest",
+	is_ground_content = false,
 	sounds = default.node_sound_wood_defaults(),
 	on_destruct = function(pos)
 		local m = minetest.env:get_meta(pos)
@@ -1254,6 +1272,7 @@ minetest.register_node("default:chest_right", {
 	paramtype2 = "facedir",
 	groups = {choppy=2,oddly_breakable_by_hand=2,not_in_creative_inventory=1},
 	drop = "default:chest",
+	is_ground_content = false,
 	sounds = default.node_sound_wood_defaults(),
 	on_destruct = function(pos)
 		local m = minetest.env:get_meta(pos)
@@ -1315,6 +1334,7 @@ minetest.register_node("default:furnace", {
 	tiles = {"default_furnace_top.png", "default_furnace_bottom.png", "default_furnace_side.png",
 		"default_furnace_side.png", "default_furnace_side.png", "default_furnace_front.png"},
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	stack_max = 64,
 	groups = {cracky=2},
 	legacy_facedir_simple = true,
@@ -1384,6 +1404,7 @@ minetest.register_node("default:furnace_active", {
 	tiles = {"default_furnace_top.png", "default_furnace_bottom.png", "default_furnace_side.png",
 		"default_furnace_side.png", "default_furnace_side.png", "default_furnace_front_active.png"},
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	light_source = 12,
 	drop = "default:furnace",
 	groups = {cracky=2, not_in_creative_inventory=1},
@@ -1583,7 +1604,7 @@ minetest.register_node("default:mossycobble", {
 minetest.register_node("default:coalblock", {
 	description = "Block of Coal",
 	tiles = {"default_coal_block.png"},
-	is_ground_content = true,
+	is_ground_content = false,
 	stack_max = 64,
 	groups = {cracky=2},
 	sounds = default.node_sound_stone_defaults(),
@@ -1592,7 +1613,7 @@ minetest.register_node("default:coalblock", {
 minetest.register_node("default:steelblock", {
 	description = "Block of Iron",
 	tiles = {"default_steel_block.png"},
-	is_ground_content = true,
+	is_ground_content = false,
 	stack_max = 64,
 	groups = {cracky=1,level=2},
 	sounds = default.node_sound_stone_defaults(),
@@ -1601,7 +1622,7 @@ minetest.register_node("default:steelblock", {
 minetest.register_node("default:goldblock", {
 	description = "Block of Gold",
 	tiles = {"default_gold_block.png"},
-	is_ground_content = true,
+	is_ground_content = false,
 	stack_max = 64,
 	groups = {cracky=1},
 	sounds = default.node_sound_stone_defaults(),
@@ -1610,7 +1631,7 @@ minetest.register_node("default:goldblock", {
 minetest.register_node("default:diamondblock", {
 	description = "Block of Diamond",
 	tiles = {"default_diamond_block.png"},
-	is_ground_content = true,
+	is_ground_content = false,
 	stack_max = 64,
 	groups = {cracky=1,level=3},
 	sounds = default.node_sound_stone_defaults(),
@@ -1619,6 +1640,7 @@ minetest.register_node("default:diamondblock", {
 minetest.register_node("default:lapisblock", {
 	description = "Lapis Lazul Block",
 	tiles = {"default_lapis_block.png"},
+	is_ground_content = false,
 	stack_max = 64,
 	groups = {cracky=1},
 	sounds = default.node_sound_stone_defaults(),
@@ -1627,6 +1649,7 @@ minetest.register_node("default:lapisblock", {
 minetest.register_node("default:emeraldblock", {
 	description = "Block of Emerald",
 	tiles = {"default_emerald_block.png"},
+	is_ground_content = false,
 	stack_max = 64,
 	groups = {cracky=1},
 	sounds = default.node_sound_stone_defaults(),
@@ -1760,6 +1783,7 @@ minetest.register_node("default:glowstone", {
 minetest.register_node("default:sponge", {
 	description = "Sponge",
 	drawtype = "normal",
+	is_ground_content = false,
 	tiles = {"default_sponge.png"},
 	paramtype = 'light',
 	walkable = true,
@@ -1839,6 +1863,7 @@ minetest.register_node("default:sponge", {
 minetest.register_node("default:sponge_wet", {
 	description = "Wet Sponge",
 	drawtype = "normal",
+	is_ground_content = false,
 	tiles = {"default_sponge_wet.png"},
 	paramtype = 'light',
 	walkable = true,

mods/doors/init.lua

@@ -152,6 +152,7 @@ function doors:register_door(name, def)
 		tiles = {tb[2], tb[2], tb[2], tb[2], tb[1], tb[1].."^[transformfx"},
 		paramtype = "light",
 		paramtype2 = "facedir",
+		is_ground_content = false,
 		drop = name,
 		drawtype = "nodebox",
 		node_box = {
@@ -187,6 +188,7 @@ function doors:register_door(name, def)
 		tiles = {tt[2], tt[2], tt[2], tt[2], tt[1], tt[1].."^[transformfx"},
 		paramtype = "light",
 		paramtype2 = "facedir",
+		is_ground_content = false,
 		drop = "",
 		drawtype = "nodebox",
 		node_box = {
@@ -222,6 +224,7 @@ function doors:register_door(name, def)
 		tiles = {tb[2], tb[2], tb[2], tb[2], tb[1].."^[transformfx", tb[1]},
 		paramtype = "light",
 		paramtype2 = "facedir",
+		is_ground_content = false,
 		drop = name,
 		drawtype = "nodebox",
 		node_box = {
@@ -257,6 +260,7 @@ function doors:register_door(name, def)
 		tiles = {tt[2], tt[2], tt[2], tt[2], tt[1].."^[transformfx", tt[1]},
 		paramtype = "light",
 		paramtype2 = "facedir",
+		is_ground_content = false,
 		drop = "",
 		drawtype = "nodebox",
 		node_box = {
@@ -449,6 +453,7 @@ minetest.register_node("doors:trapdoor", {
 	description = "Wooden Trapdoor",
 	drawtype = "nodebox",
 	tiles = {"door_trapdoor.png", "door_trapdoor.png",  "default_wood.png",  "default_wood.png", "default_wood.png", "default_wood.png"},
+	is_ground_content = false,
 	paramtype = "light",
 	stack_max = 16,
 	paramtype2 = "facedir",
@@ -494,6 +499,7 @@ minetest.register_node("doors:trapdoor", {
 minetest.register_node("doors:trapdoor_open", {
 	drawtype = "nodebox",
 	tiles = {"default_wood.png", "default_wood.png",  "default_wood.png",  "default_wood.png", "door_trapdoor.png", "door_trapdoor.png"},
+	is_ground_content = false,
 	paramtype = "light",
 	paramtype2 = "facedir",
 	pointable = true,
@@ -567,6 +573,7 @@ minetest.register_node("doors:iron_trapdoor", {
 	drawtype = "nodebox",
 	tiles = {"iron_trapdoor.png", "iron_trapdoor.png",  "default_steel_block.png",  "default_steel_block.png", "default_steel_block.png", "default_steel_block.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	stack_max = 16,
 	paramtype2 = "facedir",
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,mesecon_effector_on=1,flammable=0,door=1},
@@ -610,6 +617,7 @@ minetest.register_node("doors:iron_trapdoor_open", {
 	tiles = {"default_steel_block.png", "default_steel_block.png",  "default_steel_block.png",  "default_steel_block.png", "iron_trapdoor.png", "iron_trapdoor.png"},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	pointable = true,
 	stack_max = 0,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=0,door=1,mesecon_effector_on=1},

mods/fences/init.lua

@@ -101,6 +101,7 @@ minetest.register_node("fences:fence_wood", {
 	inventory_image = "default_fence.png",
 	wield_image = "default_fence.png",
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1},
 	drop = 'fences:fence_wood',
 	stack_max = 64,
@@ -132,6 +133,7 @@ minetest.register_node("fences:fence_wood", {
 minetest.register_node("fences:fence_wood_1", {
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -159,6 +161,7 @@ minetest.register_node("fences:fence_wood_1", {
 minetest.register_node("fences:fence_wood_2", {
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -186,6 +189,7 @@ minetest.register_node("fences:fence_wood_2", {
 minetest.register_node("fences:fence_wood_3", {  --left+right(3)
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -240,6 +244,7 @@ minetest.register_node("fences:fence_wood_11", {  --top
 minetest.register_node("fences:fence_wood_21", {  --bottom
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -268,6 +273,7 @@ minetest.register_node("fences:fence_wood_21", {  --bottom
 minetest.register_node("fences:fence_wood_32", {  --top+bottom(32)
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -295,6 +301,7 @@ minetest.register_node("fences:fence_wood_32", {  --top+bottom(32)
 minetest.register_node("fences:fence_wood_14", {  --left+right(3)+ top(11) =14
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -322,6 +329,7 @@ minetest.register_node("fences:fence_wood_14", {  --left+right(3)+ top(11) =14
 minetest.register_node("fences:fence_wood_24", {  --left+right(3)+ bottom(21) =24
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -349,6 +357,7 @@ minetest.register_node("fences:fence_wood_24", {  --left+right(3)+ bottom(21) =2
 minetest.register_node("fences:fence_wood_35", {  --left+right(3)+top+bottom(32) = 35
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -376,6 +385,7 @@ minetest.register_node("fences:fence_wood_35", {  --left+right(3)+top+bottom(32)
 minetest.register_node("fences:fence_wood_12", {  --left(1)+top(11)=12
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -403,6 +413,7 @@ minetest.register_node("fences:fence_wood_12", {  --left(1)+top(11)=12
 minetest.register_node("fences:fence_wood_22", {  --left(1)+bottom(21)=22
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -430,6 +441,7 @@ minetest.register_node("fences:fence_wood_22", {  --left(1)+bottom(21)=22
 minetest.register_node("fences:fence_wood_33", {  --left(1)+top+bottom(32)=33
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -457,6 +469,7 @@ minetest.register_node("fences:fence_wood_33", {  --left(1)+top+bottom(32)=33
 minetest.register_node("fences:fence_wood_34", {  --right(2)+top+bottom(32)=34
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -484,6 +497,7 @@ minetest.register_node("fences:fence_wood_34", {  --right(2)+top+bottom(32)=34
 minetest.register_node("fences:fence_wood_23", {  --right(2)+bottom(21)=23
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -511,6 +525,7 @@ minetest.register_node("fences:fence_wood_23", {  --right(2)+bottom(21)=23
 minetest.register_node("fences:fence_wood_13", {  --right(2)+top(11)=13
 	tiles = {"default_wood.png"},
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1},
 	drop = 'fences:fence_wood',
 	sunlight_propagates = true,
@@ -586,6 +601,7 @@ minetest.register_node("fences:fencegate_open", {
 	wield_image = "default_fence.png",
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	walkable = true,
 	groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=2,fences=1,not_in_inventory=1,mesecon_effector_on=1},
@@ -630,6 +646,7 @@ minetest.register_node("fences:fencegate", {
 	inventory_image = "fences_fencegate.png",
 	wield_image = "fences_fencegate.png",
 	paramtype = "light",
+	is_ground_content = false,
 	stack_max = 16,
 	paramtype2 = "facedir",
 	sunlight_propagates = true,

mods/flowers/init.lua

@@ -313,6 +313,7 @@ minetest.register_abm({
 minetest.register_node("flowers:pot",{
 	description = "Flower Pot",
 	drawtype = "nodebox",
+	is_ground_content = false,
 	node_box = { type = "fixed", fixed = {
 		{-0.125,-0.125,-0.187500,-0.187500,-0.500,0.1875}, --Wall 1
 		{0.1875,-0.125,-0.125,0.125,-0.500,0.1875}, --Wall 2

mods/gemalde/init.lua

@@ -28,6 +28,7 @@ minetest.register_node("gemalde:node_"..n.."", {
 	tiles = {"gemalde_"..n..".png"},
 	visual_scale = 3.0,
 	inventory_image = "gemalde_node.png",
+	is_ground_content = false,
 	wield_image = "gemalde_node.png",
 	paramtype = "light",
 	paramtype2 = "wallmounted",

mods/head/init.lua

@@ -3,7 +3,8 @@
 function addhead(node, desc)
 	minetest.register_node("head:"..node, {
 			description = ""..desc,
-			drawtype = "nodebox",
+	    		drawtype = "nodebox",
+			is_ground_content = false,
 			node_box = {
 				type = "fixed",
 				fixed = {       

mods/inventory/workbench.lua

@@ -4,6 +4,7 @@ minetest.register_node("inventory:crafting_table", {
 		"inventory_crafting_table_side.png", "inventory_crafting_table_front.png", "inventory_crafting_table_front.png"},
 	paramtype2 = "facedir",
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {choppy=2,oddly_breakable_by_hand=1,flammable=2},
 	sounds = default.node_sound_wood_defaults(),
 	on_rightclick = function(pos, node, clicker, itemstack)

mods/itemframes/init.lua

@@ -89,6 +89,7 @@ end
 minetest.register_node("itemframes:frame",{
 	description = "Item Frame",
 	drawtype = "nodebox",
+	is_ground_content = false,
 	node_box = { type = "fixed", fixed = {-0.5, -0.5, 7/16, 0.5, 0.5, 0.5} },
 	selection_box = { type = "fixed", fixed = {-0.5, -0.5, 7/16, 0.5, 0.5, 0.5} },
 	inventory_image = "itemframes_frame.png",

mods/redstone/mesecons/oldwires.lua

@@ -4,7 +4,7 @@ minetest.register_node("mesecons:mesecon_off", {
 	inventory_image = "jeija_mesecon_off.png",
 	wield_image = "jeija_mesecon_off.png",
 	paramtype = "light",
-	is_ground_content = true,
+	is_ground_content = false,
 	walkable = false,
 	selection_box = {
 		type = "fixed",
@@ -22,7 +22,7 @@ minetest.register_node("mesecons:mesecon_on", {
 	drawtype = "raillike",
 	tiles = {"jeija_mesecon_on.png", "jeija_mesecon_curved_on.png", "jeija_mesecon_t_junction_on.png", "jeija_mesecon_crossing_on.png"},
 	paramtype = "light",
-	is_ground_content = true,
+	is_ground_content = false,
 	walkable = false,
 	selection_box = {
 		type = "fixed",

mods/redstone/mesecons/wires.lua

@@ -99,6 +99,7 @@ for zmy=0, 1 do
 		description = "Redstone Dust",
 		drawtype = "nodebox",
 		tiles = tiles_off,
+		is_ground_content = false,
 --		inventory_image = "wires_inv.png",
 --		wield_image = "wires_inv.png",
 		inventory_image = "default_redstone_dust.png",
@@ -128,6 +129,7 @@ for zmy=0, 1 do
 		description = "Redstone Dust",
 		drawtype = "nodebox",
 		tiles = tiles_on,
+		is_ground_content = false,
 --		inventory_image = "wires_inv.png",
 --		wield_image = "wires_inv.png",
 		inventory_image = "default_redstone_dust.png",

mods/redstone/mesecons_button/init.lua

@@ -26,6 +26,7 @@ minetest.register_node("mesecons_button:button_stone_off", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	legacy_wallmounted = true,
+	is_ground_content = false,
 	walkable = false,
 	sunlight_propagates = true,
 	selection_box = {
@@ -57,6 +58,7 @@ minetest.register_node("mesecons_button:button_stone_on", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	legacy_wallmounted = true,
+	is_ground_content = false,
 	walkable = false,
 	sunlight_propagates = true,
 	selection_box = {
@@ -83,6 +85,7 @@ minetest.register_node("mesecons_button:button_wood_off", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	legacy_wallmounted = true,
+	is_ground_content = false,
 	walkable = false,
 	sunlight_propagates = true,
 	selection_box = {
@@ -114,6 +117,7 @@ minetest.register_node("mesecons_button:button_wood_on", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	legacy_wallmounted = true,
+	is_ground_content = false,
 	walkable = false,
 	sunlight_propagates = true,
 	selection_box = {

mods/redstone/mesecons_compatibility/init.lua

@@ -82,6 +82,7 @@ function doors:register_door(name, def)
 		tiles = {tb[2], tb[2], tb[2], tb[2], tb[1], tb[1].."^[transformfx"},
 		paramtype = "light",
 		paramtype2 = "facedir",
+		is_ground_content = false,
 		drop = name,
 		drawtype = "nodebox",
 		node_box = {
@@ -116,6 +117,7 @@ function doors:register_door(name, def)
 		tiles = {tb[2], tb[2], tb[2], tb[2], tb[1].."^[transformfx", tb[1]},
 		paramtype = "light",
 		paramtype2 = "facedir",
+		is_ground_content = false,
 		drop = name,
 		drawtype = "nodebox",
 		node_box = {

mods/redstone/mesecons_delayer/init.lua

@@ -110,7 +110,7 @@ minetest.register_node("mesecons_delayer:delayer_off_"..tostring(i), {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	sunlight_propagates = true,
-	is_ground_content = true,
+	is_ground_content = false,
 	drop = 'mesecons_delayer:delayer_off_1',
 	on_punch = function (pos, node)
 		if node.name=="mesecons_delayer:delayer_off_1" then
@@ -165,7 +165,7 @@ minetest.register_node("mesecons_delayer:delayer_on_"..tostring(i), {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	sunlight_propagates = true,
-	is_ground_content = true,
+	is_ground_content = false,
 	drop = 'mesecons_delayer:delayer_off_1',
 	on_punch = function (pos, node)
 		if node.name=="mesecons_delayer:delayer_on_1" then

mods/redstone/mesecons_lightstone/init.lua

@@ -2,6 +2,7 @@ minetest.register_node("mesecons_lightstone:lightstone_off", {
 	tiles = {"jeija_lightstone_gray_off.png"},
 	inventory_image = minetest.inventorycube("jeija_lightstone_gray_off.png"),
 	groups = {cracky=2, mesecon_effector_off = 1, mesecon = 2},
+	is_ground_content = false,
 	description= "Redstone Lamp",
 	sounds = default.node_sound_stone_defaults(),
 	mesecons = {effector = {
@@ -16,6 +17,7 @@ minetest.register_node("mesecons_lightstone:lightstone_on", {
 	inventory_image = minetest.inventorycube("jeija_lightstone_gray_off.png"),
 	groups = {cracky=2,not_in_creative_inventory=1, mesecon = 2},
 	drop = "node mesecons_lightstone:lightstone_off",
+	is_ground_content = false,
 	light_source = 14,
 	sounds = default.node_sound_stone_defaults(),
 	mesecons = {effector = {

mods/redstone/mesecons_noteblock/init.lua

@@ -5,6 +5,7 @@ minetest.register_node("mesecons_noteblock:noteblock", {
 	drawtype = "allfaces_optional",
 	visual_scale = 1.3,
 	paramtype="light",
+	is_ground_content = false,
 	after_place_node = function(pos)
 		minetest.env:add_node(pos, {name="mesecons_noteblock:noteblock", param2=0})
 	end,

mods/redstone/mesecons_pistons/init.lua

@@ -154,6 +154,7 @@ minetest.register_node("mesecons_pistons:piston_normal_off", {
 		},
 	groups = {cracky = 3},
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	after_place_node = piston_orientate,
 	mesecons_piston = pistonspec_normal,
 	sounds = default.node_sound_wood_defaults(),
@@ -179,6 +180,7 @@ minetest.register_node("mesecons_pistons:piston_normal_on", {
 	groups = {cracky = 3, not_in_creative_inventory = 1},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	drop = "mesecons_pistons:piston_normal_off",
 	after_dig_node = piston_remove_pusher,
 	node_box = piston_on_box,
@@ -204,6 +206,7 @@ minetest.register_node("mesecons_pistons:piston_pusher_normal", {
 		},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	diggable = false,
 	corresponding_piston = "mesecons_pistons:piston_normal_on",
 	selection_box = piston_pusher_box,
@@ -235,6 +238,7 @@ minetest.register_node("mesecons_pistons:piston_sticky_off", {
 		},
 	groups = {cracky = 3},
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	after_place_node = piston_orientate,
 	mesecons_piston = pistonspec_sticky,
 	sounds = default.node_sound_wood_defaults(),
@@ -260,6 +264,7 @@ minetest.register_node("mesecons_pistons:piston_sticky_on", {
 	groups = {cracky = 3, not_in_creative_inventory = 1},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	drop = "mesecons_pistons:piston_normal_off",
 	after_dig_node = piston_remove_pusher,
 	node_box = piston_on_box,
@@ -285,6 +290,7 @@ minetest.register_node("mesecons_pistons:piston_pusher_sticky", {
 		},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	diggable = false,
 	corresponding_piston = "mesecons_pistons:piston_sticky_on",
 	selection_box = piston_pusher_box,
@@ -335,6 +341,7 @@ minetest.register_node("mesecons_pistons:piston_up_normal_off", {
 	wield_image = "mesecons_piston_top.png",
 	groups = {cracky = 3, not_in_creative_inventory = 1},
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	drop = "mesecons_pistons:piston_normal_off",
 	mesecons_piston = pistonspec_normal_up,
 	mesecons = {effector={
@@ -359,6 +366,7 @@ minetest.register_node("mesecons_pistons:piston_up_normal_on", {
 	groups = {cracky = 3, not_in_creative_inventory = 1},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	drop = "mesecons_pistons:piston_normal_off",
 	after_dig_node = piston_remove_pusher,
 	node_box = piston_up_on_box,
@@ -384,6 +392,7 @@ minetest.register_node("mesecons_pistons:piston_up_pusher_normal", {
 		},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	diggable = false,
 	corresponding_piston = "mesecons_pistons:piston_up_normal_on",
 	selection_box = piston_up_pusher_box,
@@ -418,6 +427,7 @@ minetest.register_node("mesecons_pistons:piston_up_sticky_off", {
 	wield_image = "mesecons_piston_top.png",
 	groups = {cracky = 3, not_in_creative_inventory = 1},
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	drop = "mesecons_pistons:piston_sticky_off",
 	mesecons_piston = pistonspec_sticky_up,
 	sounds = default.node_sound_wood_defaults(),
@@ -443,6 +453,7 @@ minetest.register_node("mesecons_pistons:piston_up_sticky_on", {
 	groups = {cracky = 3, not_in_creative_inventory = 1},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	drop = "mesecons_pistons:piston_normal_off",
 	after_dig_node = piston_remove_pusher,
 	node_box = piston_up_on_box,
@@ -468,6 +479,7 @@ minetest.register_node("mesecons_pistons:piston_up_pusher_sticky", {
 		},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	diggable = false,
 	corresponding_piston = "mesecons_pistons:piston_up_sticky_on",
 	selection_box = piston_up_pusher_box,
@@ -520,6 +532,7 @@ minetest.register_node("mesecons_pistons:piston_down_normal_off", {
 	wield_image = "mesecons_piston_top.png",
 	groups = {cracky = 3, not_in_creative_inventory = 1},
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	drop = "mesecons_pistons:piston_normal_off",
 	mesecons_piston = pistonspec_normal_down,
 	sounds = default.node_sound_wood_defaults(),
@@ -545,6 +558,7 @@ minetest.register_node("mesecons_pistons:piston_down_normal_on", {
 	groups = {cracky = 3, not_in_creative_inventory = 1},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	drop = "mesecons_pistons:piston_normal_off",
 	after_dig_node = piston_remove_pusher,
 	node_box = piston_down_on_box,
@@ -570,6 +584,7 @@ minetest.register_node("mesecons_pistons:piston_down_pusher_normal", {
 		},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	diggable = false,
 	corresponding_piston = "mesecons_pistons:piston_down_normal_on",
 	selection_box = piston_down_pusher_box,
@@ -600,6 +615,7 @@ minetest.register_node("mesecons_pistons:piston_down_sticky_off", {
 	wield_image = "mesecons_piston_top.png",
 	groups = {cracky = 3, not_in_creative_inventory = 1},
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	drop = "mesecons_pistons:piston_sticky_off",
 	mesecons_piston = pistonspec_sticky_down,
 	sounds = default.node_sound_wood_defaults(),
@@ -625,6 +641,7 @@ minetest.register_node("mesecons_pistons:piston_down_sticky_on", {
 	groups = {cracky = 3, not_in_creative_inventory = 1},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	drop = "mesecons_pistons:piston_sticky_off",
 	after_dig_node = piston_remove_pusher,
 	node_box = piston_down_on_box,
@@ -650,6 +667,7 @@ minetest.register_node("mesecons_pistons:piston_down_pusher_sticky", {
 		},
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	diggable = false,
 	corresponding_piston = "mesecons_pistons:piston_down_sticky_on",
 	selection_box = piston_down_pusher_box,

mods/redstone/mesecons_pressureplates/init.lua

@@ -63,6 +63,7 @@ function mesecon:register_pressure_plate(offstate, onstate, description, texture
 		selection_box = pp_box_off,
 		node_box = pp_box_off,
 		groups = {snappy = 2, oddly_breakable_by_hand = 3},
+		is_ground_content = false,
 	    	description = description,
 		pressureplate = ppspec,
 		on_timer = pp_on_timer,
@@ -81,6 +82,7 @@ function mesecon:register_pressure_plate(offstate, onstate, description, texture
 		selection_box = pp_box_on,
 		node_box = pp_box_on,
 		groups = {snappy = 2, oddly_breakable_by_hand = 3, not_in_creative_inventory = 1},
+		is_ground_content = false,
 		drop = offstate,
 		pressureplate = ppspec,
 		on_timer = pp_on_timer,

mods/redstone/mesecons_solarpanel/init.lua

@@ -8,7 +8,7 @@ minetest.register_node("mesecons_solarpanel:solar_panel_on", {
 	wield_image = "jeija_solar_panel.png",
 	paramtype = "light",
 	walkable = false,
-	is_ground_content = true,
+	is_ground_content = false,
 	selection_box = {
 		type = "fixed",
 		fixed = boxes
@@ -33,8 +33,8 @@ minetest.register_node("mesecons_solarpanel:solar_panel_off", {
 	wield_image = "jeija_solar_panel.png",
 	paramtype = "light",
 	walkable = false,
-	is_ground_content = true,
+	is_ground_content = false,
-		selection_box = {
+	selection_box = {
 		type = "fixed",
 		fixed = boxes
 	},
@@ -97,7 +97,7 @@ minetest.register_node("mesecons_solarpanel:solar_panel_inverted_on", {
 	wield_image = "jeija_solar_panel_inverted.png",
 	paramtype = "light",
 	walkable = false,
-	is_ground_content = true,
+	is_ground_content = false,
 	selection_box = {
 		type = "fixed",
 		fixed = boxes
@@ -122,8 +122,8 @@ minetest.register_node("mesecons_solarpanel:solar_panel_inverted_off", {
 	wield_image = "jeija_solar_panel_inverted.png",
 	paramtype = "light",
 	walkable = false,
-	is_ground_content = true,
+	is_ground_content = false,
-		selection_box = {
+	selection_box = {
 		type = "fixed",
 		fixed = boxes
 	},

mods/redstone/mesecons_torch/init.lua

@@ -56,6 +56,7 @@ minetest.register_node("mesecons_torch:mesecon_torch_off", {
 	paramtype = "light",
 	walkable = false,
 	paramtype2 = "wallmounted",
+	is_ground_content = false,
 	selection_box = torch_selectionbox,
 	groups = {dig_immediate = 3, not_in_creative_inventory = 1},
 	drop = "mesecons_torch:mesecon_torch_on",
@@ -75,6 +76,7 @@ minetest.register_node("mesecons_torch:mesecon_torch_on", {
 	sunlight_propagates = true,
 	walkable = false,
 	paramtype2 = "wallmounted",
+	is_ground_content = false,
 	selection_box = torch_selectionbox,
 	groups = {dig_immediate=3},
 	light_source = 6,
@@ -91,6 +93,7 @@ minetest.register_node("mesecons_torch:redstoneblock", {
 	stack_max = 64,
 	groups = {cracky=1},
 	sounds = default.node_sound_stone_defaults(),
+	is_ground_content = false,
 	mesecons = {receptor = {
 		state = mesecon.state.on,
 		rules = torch_get_output_rules

mods/redstone/mesecons_walllever/init.lua

@@ -28,6 +28,7 @@ minetest.register_node("mesecons_walllever:wall_lever_off", {
 			 { -1/16, -8/16, 7/16, 1/16, 0/16,  5/16 }}	-- the lever itself.
 	},
 	groups = {dig_immediate=2},
+	is_ground_content = false,
 	description="Lever",
 	on_punch = function (pos, node)
 		mesecon:swap_node(pos, "mesecons_walllever:wall_lever_on")
@@ -66,6 +67,7 @@ minetest.register_node("mesecons_walllever:wall_lever_on", {
 			 { -1/16, 0/16, 7/16, 1/16, 8/16,  5/16 }}	-- the lever itself.
 	},
 	groups = {dig_immediate = 2, not_in_creative_inventory = 1},
+	is_ground_content = false,
 	drop = '"mesecons_walllever:wall_lever_off" 1',
 	description="Lever",
 	on_punch = function (pos, node)

mods/signs/init.lua

@@ -87,6 +87,7 @@ minetest.register_node("signs:sign_wall", {
     description = "Sign",
     inventory_image = "default_sign_wall.png",
 	walkable = false,
+	is_ground_content = false,
     wield_image = "default_sign_wall.png",
     node_placement_prediction = "",
     paramtype = "light",
@@ -158,6 +159,7 @@ minetest.register_node("signs:sign_yard", {
     paramtype = "light",
 	sunlight_propagates = true,
 	walkable = false,
+	is_ground_content = false,
     paramtype2 = "facedir",
     drawtype = "nodebox",
     node_box = {type = "fixed", fixed = {

mods/stairs/init.lua

@@ -11,7 +11,7 @@ function stairs.register_stair(subname, recipeitem, groups, images, description,
 		tiles = images,
 		paramtype = "light",
 		paramtype2 = "facedir",
-		is_ground_content = true,
+		is_ground_content = false,
 		groups = groups,
 		sounds = sounds,
 		node_box = {
@@ -60,7 +60,7 @@ function stairs.register_stair(subname, recipeitem, groups, images, description,
 		tiles = images,
 		paramtype = "light",
 		paramtype2 = "facedir",
-		is_ground_content = true,
+		is_ground_content = false,
 		groups = groups,
 		sounds = sounds,
 		node_box = {
@@ -78,7 +78,7 @@ function stairs.register_stair(subname, recipeitem, groups, images, description,
 		tiles = images,
 		paramtype = "light",
 		paramtype2 = "facedir",
-		is_ground_content = true,
+		is_ground_content = false,
 		groups = groups,
 		sounds = sounds,
 		node_box = {
@@ -117,7 +117,7 @@ function stairs.register_slab(subname, recipeitem, groups, images, description,
 		drawtype = "nodebox",
 		tiles = images,
 		paramtype = "light",
-		is_ground_content = true,
+		is_ground_content = false,
 		groups = groups,
 		sounds = sounds,
 		node_box = {
@@ -212,7 +212,7 @@ function stairs.register_slab(subname, recipeitem, groups, images, description,
 		stack_max = 64,
 		paramtype2 = "facedir",
 		on_place = minetest.rotate_node,
-		is_ground_content = true,
+		is_ground_content = false,
 		groups = groups,
 		sounds = sounds,
 		node_box = {

mods/throwing/arrow.lua

@@ -5,6 +5,7 @@ minetest.register_craftitem("throwing:arrow", {
 
 minetest.register_node("throwing:arrow_box", {
 	drawtype = "nodebox",
+	is_ground_content = false,
 	node_box = {
 		type = "fixed",
 		fixed = {

mods/tnt/init.lua

@@ -35,6 +35,7 @@ minetest.register_node("tnt:tnt", {
 			"default_tnt_side.png", "default_tnt_side.png",
 			"default_tnt_side.png", "default_tnt_side.png"},
 	dug_item = '', -- Get nothing
+	is_ground_content = false,
 	material = {
 		diggability = "not",
 	},
@@ -160,4 +161,4 @@ minetest.register_craft({
 		{'default:sand','default:gunpowder','default:sand'},
 		{'default:gunpowder','default:sand','default:gunpowder'}
 	}
-})
+})

mods/torches/init.lua

@@ -140,6 +140,7 @@ minetest.register_node("torches:floor", {
 		"torches_torch.png^[transformfx", "torches_torch.png", "torches_torch.png"},
 	paramtype = "light",
 	paramtype2 = "none",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	drop = "default:torch",
 	walkable = false,
@@ -186,6 +187,7 @@ minetest.register_node("torches:wand", {
 
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	walkable = false,
 	light_source = 13,

mods/vessels/init.lua

@@ -5,6 +5,7 @@ minetest.register_node("vessels:glass_bottle", {
 	description = "Glass Bottle",
 	drawtype = "plantlike",
 	tiles = {"vessels_glass_bottle.png"},
+	is_ground_content = false,
 	inventory_image = "vessels_glass_bottle_inv.png",
 	wield_image = "vessels_glass_bottle.png",
 	paramtype = "light",

mods/wallet/init.lua

@@ -108,6 +108,7 @@ local function register_wall(nodename, name, texture, invtex)
 				fixed = {-4/16, -1, -4/16, 4/16, 1, 4/16}
 			},
 			drawtype = "nodebox",
+			is_ground_content = false,
 			tile_images = {texture},
 			paramtype = "light",
 			groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,fences=1},
@@ -127,6 +128,7 @@ local function register_wall(nodename, name, texture, invtex)
 		},
 		tile_images = {texture},
 		paramtype = "light",
+		is_ground_content = false,
 		groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,fences=1},
 		drop = nodename,
 		node_box = {
@@ -143,6 +145,7 @@ local function register_wall(nodename, name, texture, invtex)
 		},
 		tile_images = {texture},
 		paramtype = "light",
+		is_ground_content = false,
 		groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3,fences=1},
 		drop = nodename,
 		node_box = {
@@ -155,6 +158,7 @@ local function register_wall(nodename, name, texture, invtex)
 	minetest.register_node(nodename, {
 		description = name,
 		paramtype = "light",
+		is_ground_content = false,
 		tile_images = {texture},
 		inventory_image = invtex,
 		stack_max = 64,
@@ -195,4 +199,4 @@ minetest.register_craft({
 })
 
 minetest.register_on_placenode(update_wall_global)
-minetest.register_on_dignode(update_wall_global)
+minetest.register_on_dignode(update_wall_global)

mods/wool/init.lua

@@ -34,6 +34,7 @@ for _, row in ipairs(wool.dyes) do
 		minetest.register_node("wool:"..name, {
 			description = desc.." Wool",
 			stack_max = 64,
+			is_ground_content = false,
 			tiles = {"wool_"..name..".png"},
 			groups = {snappy=2,choppy=2,oddly_breakable_by_hand=3,flammable=3,wool=1},
 			sounds = default.node_sound_defaults(),
@@ -41,6 +42,7 @@ for _, row in ipairs(wool.dyes) do
 		minetest.register_node("wool:"..name.."_carpet", {
 			description = desc.." Carpet",
 			walkable = false,
+			is_ground_content = false,
 			tiles = {"wool_"..name..".png"},
 			wield_image = "wool_"..name..".png",
 			groups = {snappy=2,choppy=2,oddly_breakable_by_hand=3,carpet=1},

mods/xpanes/init.lua

@@ -78,6 +78,7 @@ function pane(node, desc, dropitem, recipeitem, color)
 			tile_images = {"xpanes_top_"..node..""..color..".png", "xpanes_top_"..node..""..color..".png", texture},
 			paramtype = "light",
 			use_texture_alpha = true,
+			is_ground_content = false,
 			groups = {snappy=2,cracky=3,oddly_breakable_by_hand=3},
 			drop = dropitem,
 			node_box = {
@@ -95,6 +96,7 @@ function pane(node, desc, dropitem, recipeitem, color)
 		description = desc,
 		tile_images = {"xpanes_pane_"..node..""..color..".png"},
 		inventory_image = "xpanes_pane_"..node..""..color..".png",
+		is_ground_content = false,
 		paramtype = "light",
 		stack_max = 64,
 		use_texture_alpha = true,