[mapgen] Add ocean monument

mods/CORE/mcl_mapgen/init.lua

@@ -1,5 +1,9 @@
 mcl_mapgen = {}
 
+local priority = {
+	OCEAN_MONUMENT = 1000000
+}
+
 local math_floor		= math.floor
 local math_max			= math.max
 local minetest_get_node		= minetest.get_node
@@ -398,3 +402,5 @@ mcl_mapgen.dungeons = normal
 mcl_mapgen.overworld = overworld
 mcl_mapgen.end_ = end_
 mcl_mapgen.nether = nether
+
+mcl_mapgen.priorities = priority

mods/MAPGEN/mcl_ocean_monument/init.lua

@@ -0,0 +1,36 @@
+local mcl_mapgen_get_far_node = mcl_mapgen.get_far_node
+local minetest_log = minetest.log
+local minetest_place_schematic = minetest.place_schematic
+local minetest_pos_to_string = minetest.pos_to_string
+
+local path = minetest.get_modpath("mcl_ocean_monument") .. "/schematics/ocean_monument.mts"
+local water, air = "mcl_core:water_source", "air"
+
+mcl_mapgen.register_chunk_generator(function(minp, maxp, seed)
+	local minp = minp
+	local y = minp.y
+	if y ~= -32 then return end
+
+	local x, z = minp.x, minp.z
+	local pr = PseudoRandom(seed)
+	for i = 1, pr:next(10,100) do
+		if mcl_mapgen_get_far_node({x=pr:next(0,79)+x, y=1, z=pr:next(0,79)+z}).name ~= water then return end
+	end
+	for i = 1, pr:next(10,100) do
+		if mcl_mapgen_get_far_node({x=pr:next(0,79)+x, y=2, z=pr:next(0,79)+z}).name ~= air then return end
+	end
+	for i = 1, pr:next(10,100) do
+		if mcl_mapgen_get_far_node({x=pr:next(15,64)+x, y=pr:next(0,25)-25, z=pr:next(15,64)+z}).name ~= water then
+--			minetest_log("warning", "[mcl_ocean_monument] Not water at " .. minetest_pos_to_string(minp))
+			return
+		end
+	end
+
+--	minetest_place_schematic(minp, path, tostring(pr:next(0,3)*90), nil, true)
+	minetest_place_schematic(minp, path, 0, nil, true)
+
+	minetest_log("action", "[mcl_ocean_monument] Placed at " .. minetest_pos_to_string(minp))
+
+	---- TODO: SET UP SPECIAL NODES...
+
+end, mcl_mapgen.priorities.OCEAN_MONUMENT)

mods/MAPGEN/mcl_ocean_monument/mod.conf

@@ -0,0 +1,4 @@
+name = mcl_ocean_monument
+author = Sister of epCode
+description = Adds Ocean Monument, https://git.minetest.land/MineClone2/MineClone2/issues/958#issuecomment-14102
+depends = mcl_mapgen, mcl_structures

mods/MAPGEN/mcl_villages/init.lua

@@ -93,6 +93,7 @@ if mg_name ~= "singlenode" then
 			local x = pr1:next(0, 40) + minp.x + 19
 			local z = pr1:next(0, 40) + minp.z + 19
 			local y = minetest_get_spawn_level(x, z)
+			if not y then return end
 			if y < (min or y+1) then min = y end
 			if y > (max or y-1) then max = y end
 		end