adjust pit plasma abm conditions

df_dependencies/mapgen.lua

@@ -35,7 +35,7 @@ if minetest.get_modpath("mcl_init") then -- Mineclone 2
 	mcl_vars.mg_end_max = mcl_vars.mg_overworld_min - 2000
 	
 	-- Important note. This doesn't change the values for the various ores and mobs and biomes and whatnot that have already been registered.
-	-- to keep things consistent, add dependencies to
+	-- TODO
 
 	dofile(minetest.get_modpath(minetest.get_current_modname()).."/ores.lua")
 	
@@ -74,6 +74,10 @@ if minetest.get_modpath("mcl_mapgen") then -- Mineclone 5
 
 	if mcl_mapgen.on_settings_changed then
 		mcl_mapgen.on_settings_changed()
+	else
+		minetest.log("error", "The installed version of the mcl_mapgen mod (part of Mineclone 5) "
+		.."does not have an mcl_mapgen.on_settings_changed method. This will likely result in "
+		.."altitudes below the original bedrock being inaccessible to players.")
 	end
 end
 if minetest.get_modpath("mcl_worlds") then

df_dependencies/misc.lua

@@ -33,7 +33,7 @@ end
 
 -- common nodes that can be found next to pit plasma, triggering matter degradation
 -- don't trigger on air, that's for sparkle generation
-df_dependencies.abm_pit_plasma_neighbors = {"group:stone", "group:lava", "group:water"}
+df_dependencies.abm_pit_plasma_neighbors = {"group:stone", "group:lava", "group:water", "group:material_stone"}
 
 df_dependencies.texture_cobble = select_required({default="default_cobble.png", mcl_core="default_cobble.png"})
 df_dependencies.texture_coral_skeleton = select_required({default="default_coral_skeleton.png", mcl_ocean="mcl_ocean_dead_horn_coral_block.png"})

df_underworld_items/crystals_amethyst.lua

@@ -6,7 +6,7 @@ minetest.register_node("df_underworld_items:glow_amethyst", {
 	_doc_items_usagehelp = df_underworld_items.doc.glow_amethyst_usage,
 	tiles = {"dfcaverns_glow_amethyst.png"},
 	is_ground_content = false,
-	groups = {cracky=3, pit_plasma_resistant=1, pickaxey = 4, building_block = 1, material_stone=1},
+	groups = {cracky=3, pit_plasma_resistant=1, pickaxey = 4, building_block = 1,}, -- deliberately not in material_stone group to keep pit plasma ABM efficient
 	sounds = df_dependencies.sound_glass(),
 	light_source = 6,
 	paramtype = "light",