add nether bridge fragment

mods/MAPGEN/mcl_nether_fortresses/init.lua

@@ -3,6 +3,21 @@ local S = minetest.get_translator(modname)
 local modpath = minetest.get_modpath(modname)
 local peaceful = minetest.settings:get_bool("only_peaceful_mobs", false)
 
+
+local function spawn_mobs(mob,spawnon,p1,p2,pr,n)
+	if peaceful then return end
+	n = n or 1
+	local sp = minetest.find_nodes_in_area_under_air(p1,p2,spawnon)
+	if sp and #sp > 0 then
+		for i=1,n do
+			local pos = vector.offset(sp[pr:next(1,#sp)],0,1,0)
+			if pos then
+				minetest.add_entity(pos,mob)
+			end
+		end
+	end
+end
+
 mcl_structures.register_structure("nether_outpost",{
 	place_on = {"mcl_nether:netherrack","mcl_crimson:crimson_nylium","mcl_crimson:warped_nylium","mcl_blackstone:basalt","mcl_blackstone:soul_soil","mcl_blackstone:blackstone","mcl_nether:soul_sand"},
 	fill_ratio = 0.01,
@@ -23,18 +38,26 @@ mcl_structures.register_structure("nether_outpost",{
 	end
 })
 
-local function spawn_mobs(mob,spawnon,p1,p2,pr,n)
+mcl_structures.register_structure("nether_bridge",{
-	n = n or 1
+	place_on = {"mcl_nether:nether_lava_source"},
-	local sp = minetest.find_nodes_in_area_under_air(p1,p2,spawnon)
+	fill_ratio = 0.01,
-	if sp and #sp > 0 then
+	chunk_probability = 100,
-		for i=1,n do
+	flags = "all_floors liquid_surface",
-			local pos = vector.offset(sp[pr:next(1,#sp)],0,1,0)
+	--biomes = {"Nether","SoulsandValley","WarpedForest","CrimsonForest","BasaltDelta"},
-			if pos then
+	sidelen = 38,
-				minetest.add_entity(pos,mob)
+	solid_ground = false,
-			end
+	make_foundation = false,
-		end
+	y_min = mcl_vars.mg_lava_nether_max - 5,
-	end
+	y_max = mcl_vars.mg_lava_nether_max + 5,
+	filenames = { modpath.."/schematics/mcl_nether_fortresses_nether_bridge_1.mts" },
+	y_offset = 0,
+	after_place = function(pos,def,pr)
+		local p1 = vector.offset(pos,-14,0,-14)
+		local p2 = vector.offset(pos,14,24,14)
+		spawn_mobs("mobs_mc:witherskeleton",{"mcl_blackstone:blackstone_chiseled_polished"},p1,p2,pr,5)
 	end
+})
+
 mcl_structures.register_structure("nether_bulwark",{
 	place_on = {"mcl_nether:netherrack","mcl_crimson:crimson_nylium","mcl_crimson:warped_nylium","mcl_blackstone:basalt","mcl_blackstone:soul_soil","mcl_blackstone:blackstone","mcl_nether:soul_sand"},
 	fill_ratio = 0.01,
@@ -62,13 +85,11 @@ mcl_structures.register_structure("nether_bulwark",{
 	y_offset = 0,
 	construct_nodes = {"group:wall"},
 	after_place = function(pos,def,pr)
-		if not peaceful then
 		local p1 = vector.offset(pos,-14,0,-14)
 		local p2 = vector.offset(pos,14,24,14)
 		spawn_mobs("mobs_mc:piglin",{"mcl_blackstone:blackstone_brick_polished","mcl_stairs:slab_blackstone_polished"},p1,p2,pr,5)
 		spawn_mobs("mobs_mc:piglin_brute",{"mcl_blackstone:blackstone_brick_polished","mcl_stairs:slab_blackstone_polished"},p1,p2,pr)
 		spawn_mobs("mobs_mc:hoglin",{"mcl_blackstone:nether_gold"},p1,p2,pr,4)
-		end
 	end,
 	loot = {
 		["mcl_chests:chest_small" ] ={