optimize pngs, add is_ground_content to everything

df_mapitems/castle_coral.lua

@@ -13,6 +13,7 @@ minetest.register_node("df_mapitems:castle_coral", {
 	_doc_items_longdesc = df_mapitems.doc.castle_coral_desc,
 	_doc_items_usagehelp = df_mapitems.doc.castle_coral_usage,
 	drawtype = "mesh",
+	is_ground_content = false,
 	light_source = 2,
 	mesh = "octagonal_coral.obj",
 	drop = "df_mapitems:castle_coral_skeleton",
@@ -34,6 +35,7 @@ minetest.register_node("df_mapitems:castle_coral_skeleton", {
 	drawtype = "mesh",
 	mesh = "octagonal_coral.obj",
 	paramtype = "light",
+	is_ground_content = false,
 	groups = {cracky = 3},
 	sounds = default.node_sound_stone_defaults(),
 })

df_mapitems/cave_coral.lua

@@ -10,6 +10,7 @@ minetest.register_node("df_mapitems:cave_coral_3", {
 	drop = "default:coral_skeleton",
 	light_source = 3,
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	groups = {cracky = 3, dfcaverns_cave_coral = 1},
 	sounds = default.node_sound_stone_defaults(),
 })
@@ -22,6 +23,7 @@ minetest.register_node("df_mapitems:cave_coral_2", {
 	drop = "default:coral_skeleton",
 	light_source = 2,
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	groups = {cracky = 3, dfcaverns_cave_coral = 1},
 	sounds = default.node_sound_stone_defaults(),
 })
@@ -34,6 +36,7 @@ minetest.register_node("df_mapitems:cave_coral_1", {
 	drop = "default:coral_skeleton",
 	light_source = 1,
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	groups = {cracky = 3, dfcaverns_cave_coral = 1},
 	sounds = default.node_sound_stone_defaults(),
 })

df_mapitems/cave_pearls.lua

@@ -12,6 +12,7 @@ minetest.register_node("df_mapitems:cave_pearls", {
 	paramtype2 = "facedir",
 	groups = {cracky = 2},
 	walkable = false,
+	is_ground_content = false,
 	climbable = true,
 	light_source = 4,
 	node_box = {

df_mapitems/crystals_mese.lua

@@ -8,9 +8,9 @@ minetest.register_node("df_mapitems:glow_mese", {
 	_doc_items_longdesc = df_mapitems.doc.glow_mese_desc,
 	_doc_items_usagehelp = df_mapitems.doc.glow_mese_usage,
 	tiles = {"dfcaverns_glow_mese.png"},
-	is_ground_content = true,
 	groups = {cracky=3},
 	sounds = default.node_sound_glass_defaults(),
+	is_ground_content = false,
 	light_source = 13,
 	paramtype = "light",
 	use_texture_alpha = true,
@@ -36,7 +36,7 @@ minetest.register_node("df_mapitems:mese_crystal", {
 	drawtype = "mesh",
 	mesh = "underch_crystal.obj",
 	light_source = 12,
-	is_ground_content = true,
+	is_ground_content = false,
 	sounds = default.node_sound_glass_defaults(),
 	use_texture_alpha = true,
 	sunlight_propagates = true,

df_mapitems/crystals_ruby.lua

@@ -7,7 +7,7 @@ minetest.register_node("df_mapitems:glow_ruby_ore", {
 	_doc_items_longdesc = df_mapitems.doc.glow_ruby_ore_desc,
 	_doc_items_usagehelp = df_mapitems.doc.glow_ruby_ore_usage,
 	tiles = {"dfcaverns_glow_ruby_ore.png"},
-	is_ground_content = true,
+	is_ground_content = false,
 	groups = {cracky=2},
 	sounds = default.node_sound_glass_defaults(),
 })
@@ -25,6 +25,7 @@ minetest.register_node("df_mapitems:big_crystal", {
 	use_texture_alpha = true,
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	light_source = 12,
 	groups = {cracky=2, dfcaverns_big_crystal = 1},
@@ -52,6 +53,7 @@ minetest.register_node("df_mapitems:med_crystal", {
 	use_texture_alpha = true,
 	paramtype = "light",
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	sunlight_propagates = true,
 	light_source = 12,
 	groups = {cracky=2, dfcaverns_big_crystal = 1},
@@ -81,6 +83,7 @@ minetest.register_node("df_mapitems:big_crystal_30", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	sunlight_propagates = true,
+	is_ground_content = false,
 	light_source = 12,
 	drop = "df_mapitems:big_crystal",
 	groups = {cracky=2, dfcaverns_big_crystal = 1},
@@ -132,6 +135,7 @@ minetest.register_node("df_mapitems:med_crystal_30", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	sunlight_propagates = true,
+	is_ground_content = false,
 	light_source = 12,
 	drop = "df_mapitems:med_crystal",
 	groups = {cracky=2, dfcaverns_big_crystal = 1},
@@ -168,6 +172,7 @@ minetest.register_node("df_mapitems:big_crystal_30_45", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	sunlight_propagates = true,
+	is_ground_content = false,
 	light_source = 12,
 	drop = "df_mapitems:big_crystal",
 	groups = {cracky=2, dfcaverns_big_crystal = 1},
@@ -205,6 +210,7 @@ minetest.register_node("df_mapitems:med_crystal_30_45", {
 	paramtype = "light",
 	paramtype2 = "facedir",
 	sunlight_propagates = true,
+	is_ground_content = false,
 	light_source = 12,
 	drop = "df_mapitems:med_crystal",
 	groups = {cracky=2, dfcaverns_big_crystal = 1},

df_mapitems/crystals_salt.lua

@@ -16,6 +16,7 @@ minetest.register_node("df_mapitems:salt_crystal", {
 	sounds = default.node_sound_glass_defaults(),
 	use_texture_alpha = true,
 	sunlight_propagates = true,
+	is_ground_content = false,
 	on_place = df_mapitems.place_against_surface,
 })
 
@@ -26,7 +27,7 @@ minetest.register_node("df_mapitems:salty_cobble", {
 	tiles = {"default_cobble.png^dfcaverns_salty.png"},
 	groups = {cracky = 3, stone = 1, lava_heatable = 1},
 	_magma_conduits_heats_to = "default:cobble",
-	is_ground_content = true,
+	is_ground_content = false,
 	light_source = 2,
 	drop = 'default:cobble',
 	sounds = default.node_sound_stone_defaults(),

df_mapitems/flowstone.lua

@@ -13,6 +13,7 @@ df_mapitems.dry_stalagmite_ids = subterrane.register_stalagmite_nodes("df_mapite
 	},
 	groups = {cracky = 3, stone = 2},
 	sounds = default.node_sound_stone_defaults(),
+	is_ground_content = false,
 })
 
 minetest.register_node("df_mapitems:dry_flowstone", {
@@ -22,7 +23,7 @@ minetest.register_node("df_mapitems:dry_flowstone", {
 	tiles = {"default_stone.png^[brighten"},
 	groups = {cracky = 3, stone = 1, lava_heatable = 1},
 	_magma_conduits_heats_to = "default:cobble",
-	is_ground_content = true,
+	is_ground_content = false,
 	drop = 'default:cobble',
 	sounds = default.node_sound_stone_defaults(),
 })
@@ -38,6 +39,7 @@ df_mapitems.wet_stalagmite_ids = subterrane.register_stalagmite_nodes("df_mapite
 	},
 	groups = {cracky = 3, stone = 2, subterrane_wet_dripstone = 1},
 	sounds = default.node_sound_stone_defaults(),
+	is_ground_content = false,
 }, "df_mapitems:dry_stal")
 
 
@@ -48,7 +50,7 @@ minetest.register_node("df_mapitems:wet_flowstone", {
 	tiles = {"default_stone.png^[brighten^dfcaverns_dripstone_streaks.png"},
 	groups = {cracky = 3, stone = 1, subterrane_wet_dripstone = 1, lava_heatable = 1},
 	_magma_conduits_heats_to = "df_mapitems:dry_flowstone",
-	is_ground_content = true,
+	is_ground_content = false,
 	drop = 'default:cobble',
 	sounds = default.node_sound_stone_defaults(),
 })

df_mapitems/glow_worms.lua

@@ -24,7 +24,7 @@ minetest.register_node("df_mapitems:glow_worm", {
 	},
 	inventory_image = "dfcaverns_glow_worm.png",
 	wield_image = "dfcaverns_glow_worm.png",
-	is_ground_content = true,
+	is_ground_content = false,
 	groups = {oddly_breakable_by_hand=3, light_sensitive_fungus = 12},
 	_dfcaverns_dead_node = "air",
 	light_source = 9,

df_mapitems/ground_cover.lua

@@ -15,7 +15,7 @@ minetest.register_node("df_mapitems:dirt_with_cave_moss", {
 		{name = "default_dirt.png^dfcaverns_cave_moss_side.png",
 			tileable_vertical = false}},
 	drop = "default:dirt",
-	is_ground_content = true,
+	is_ground_content = false,
 	light_source = 2,
 	paramtype = "light",
 	groups = {crumbly = 3, soil = 1, light_sensitive_fungus = 8},
@@ -56,7 +56,7 @@ minetest.register_node("df_mapitems:cobble_with_floor_fungus", {
 	_doc_items_usagehelp = df_mapitems.doc.floor_fungus_usage,
 	tiles = {"default_cobble.png^dfcaverns_floor_fungus.png"},
 	drops = "default:cobble",
-	is_ground_content = true,
+	is_ground_content = false,
 	paramtype = "light",
 	groups = {cracky = 3, stone = 2, slippery = 1, light_sensitive_fungus = 8},
 	_dfcaverns_dead_node = "default:cobble",
@@ -71,7 +71,7 @@ minetest.register_node("df_mapitems:cobble_with_floor_fungus_fine", {
 	_doc_items_usagehelp = df_mapitems.doc.floor_fungus_usage,
 	tiles = {"default_cobble.png^dfcaverns_floor_fungus_fine.png"},
 	drops = "default:cobble",
-	is_ground_content = true,
+	is_ground_content = false,
 	paramtype = "light",
 	groups = {cracky = 3, stone = 2, slippery = 1, light_sensitive_fungus = 8},
 	_dfcaverns_dead_node = "default:cobble",
@@ -113,6 +113,7 @@ minetest.register_node("df_mapitems:ice_with_hoar_moss", {
 	drops = "default:ice",
 	paramtype = "light",
 	light_source = 2,
+	is_ground_content = false,
 	groups = {cracky = 3, puts_out_fire = 1, cools_lava = 1, slippery = 2, light_sensitive_fungus = 8},
 	sounds = default.node_sound_glass_defaults(),
 	_dfcaverns_dead_node = "default:ice",

df_mapitems/snareweed.lua

@@ -10,7 +10,7 @@ minetest.register_node("df_mapitems:snareweed", {
 	drawtype="plantlike_rooted",
 	paramtype2 = "leveled",
 	special_tiles = {{name = "dfcaverns_snareweed.png", tileable_vertical = true}},
-	is_ground_content = true,
+	is_ground_content = false,
 	drop = 'default:dirt',
 	light_source = 6,
 	groups = {crumbly = 3, soil = 1},

df_mapitems/veinstone.lua

@@ -9,7 +9,7 @@ minetest.register_node("df_mapitems:veinstone", {
 	tiles = {"default_stone.png^dfcaverns_veins.png"},
 	groups = {cracky = 3, stone = 1, lava_heatable = 1},
 	_magma_conduits_heats_to = "default:cobble",
-	is_ground_content = true,
+	is_ground_content = false,
 	light_source = 2,
 	drop = 'default:cobble',
 	sounds = default.node_sound_stone_defaults(),