More use of voxelmanip, less add_node

README.txt

@@ -1,4 +1,4 @@
-projects 0.1.3 by paramat
+projects 0.1.8 by paramat
 For Minetest
 Depends default
 Licenses: code WTFPL

depends.txt

@@ -1 +1,2 @@
 default
+stairs

init.lua

@@ -1,4 +1,4 @@
--- projects 0.1.3 by paramat
+-- projects 0.1.8 by paramat
 -- For Minetest
 -- Depends default
 -- License: code WTFPL
@@ -18,7 +18,6 @@ minetest.register_node("projects:flatn", {
 	drawtype = "airlike",
 	paramtype = "light",
 	sunlight_propagates = true,
-	is_ground_content = false,
 })
 
 minetest.register_node("projects:flats", {
@@ -26,7 +25,6 @@ minetest.register_node("projects:flats", {
 	drawtype = "airlike",
 	paramtype = "light",
 	sunlight_propagates = true,
-	is_ground_content = false,
 })
 
 minetest.register_node("projects:flate", {
@@ -34,7 +32,6 @@ minetest.register_node("projects:flate", {
 	drawtype = "airlike",
 	paramtype = "light",
 	sunlight_propagates = true,
-	is_ground_content = false,
 })
 
 minetest.register_node("projects:flatw", {
@@ -42,7 +39,6 @@ minetest.register_node("projects:flatw", {
 	drawtype = "airlike",
 	paramtype = "light",
 	sunlight_propagates = true,
-	is_ground_content = false,
 })
 
 minetest.register_node("projects:horin", {
@@ -50,7 +46,6 @@ minetest.register_node("projects:horin", {
 	drawtype = "airlike",
 	paramtype = "light",
 	sunlight_propagates = true,
-	is_ground_content = false,
 })
 
 minetest.register_node("projects:horis", {
@@ -58,7 +53,6 @@ minetest.register_node("projects:horis", {
 	drawtype = "airlike",
 	paramtype = "light",
 	sunlight_propagates = true,
-	is_ground_content = false,
 })
 
 minetest.register_node("projects:horie", {
@@ -66,7 +60,6 @@ minetest.register_node("projects:horie", {
 	drawtype = "airlike",
 	paramtype = "light",
 	sunlight_propagates = true,
-	is_ground_content = false,
 })
 
 minetest.register_node("projects:horiw", {
@@ -74,31 +67,27 @@ minetest.register_node("projects:horiw", {
 	drawtype = "airlike",
 	paramtype = "light",
 	sunlight_propagates = true,
-	is_ground_content = false,
 })
 
 minetest.register_node("projects:verta", {
 	description = "Spawn Vertical Above",
-	drawtype = "airlike",
-	paramtype = "light",
-	sunlight_propagates = true,
-	is_ground_content = false,
+	tiles = {"default_sandstone_brick.png"},
+	groups = {cracky=2},
+	sounds = default.node_sound_stone_defaults(),
 })
 
 minetest.register_node("projects:vertopa", {
 	description = "Spawn Vertical Top Above",
-	drawtype = "airlike",
-	paramtype = "light",
-	sunlight_propagates = true,
-	is_ground_content = false,
+	tiles = {"default_sandstone_brick.png"},
+	groups = {cracky=2},
+	sounds = default.node_sound_stone_defaults(),
 })
 
-minetest.register_node("projects:entra", {
-	description = "Spawn Entrance",
-	drawtype = "airlike",
-	paramtype = "light",
-	sunlight_propagates = true,
-	is_ground_content = false,
+minetest.register_node("projects:vertenta", {
+	description = "Spawn Vertical Entrance Above",
+	tiles = {"default_sandstone_brick.png"},
+	groups = {cracky=2},
+	sounds = default.node_sound_stone_defaults(),
 })
 
 -- ABM
@@ -115,23 +104,43 @@ minetest.register_abm({
 		local z = pos.z
 		local c_air = minetest.get_content_id("air")
 		local c_ignore = minetest.get_content_id("ignore")
+		local c_brick = minetest.get_content_id("default:sandstonebrick")
+
 		local vm = minetest.get_voxel_manip()
-		local pos1 = {x=x-6, y=y-1, z=z+1}
+		local pos1 = {x=x-6, y=y-1, z=z}
 		local pos2 = {x=x+1, y=y+3, z=z+8}
 		local emin, emax = vm:read_from_map(pos1, pos2)
 		local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
 		local data = vm:get_data()
-		for vi in area:iterp(pos1, pos2) do
+
+		for i = -6, 1 do -- check volume is clear
+		for j = -1, 3 do
+		for k = 1, 8 do
+			local vi = area:index(x + i, y + j, z + k)
 			local nodid = data[vi]
-			if nodid ~= c_air and nodid ~= c_ignore then
-				minetest.add_node(pos, {name="default:sandstonebrick"})
-				pos.y = pos.y + 1
-				minetest.add_node(pos, {name="default:sandstonebrick"})
+			if nodid ~= c_air and nodid ~= c_ignore then -- if volume obstructed then seal up doorway, replace spawner
+				local vi = area:index(x, y, z)
+				data[vi] = c_brick
+				local via = area:index(x, y+1, z)
+				data[via] = c_brick
+
+				vm:set_data(data)
+				vm:write_to_map()
+				vm:update_map()
 				return
 			end
 		end
-		minetest.add_node(pos, {name="air"})
-		local path = minetest.get_modpath("projects") .. "/schems/flat.mts"
+		end
+		end
+
+		local vi = area:index(x, y, z) -- volume checked so replace spawner with air
+		data[vi] = c_air
+
+		vm:set_data(data)
+		vm:write_to_map()
+		vm:update_map()
+
+		local path = minetest.get_modpath("projects") .. "/schems/flat.mts" -- spawn flat
 		minetest.place_schematic({x=x-6, y=y-1, z=z+1}, path, 90, nil, true)
 	end,
 })
@@ -148,22 +157,42 @@ minetest.register_abm({
 		local z = pos.z
 		local c_air = minetest.get_content_id("air")
 		local c_ignore = minetest.get_content_id("ignore")
+		local c_brick = minetest.get_content_id("default:sandstonebrick")
+
 		local vm = minetest.get_voxel_manip()
 		local pos1 = {x=x-1, y=y-1, z=z-8}
-		local pos2 = {x=x+6, y=y+3, z=z-1}
+		local pos2 = {x=x+6, y=y+3, z=z}
 		local emin, emax = vm:read_from_map(pos1, pos2)
 		local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
 		local data = vm:get_data()
-		for vi in area:iterp(pos1, pos2) do
+
+		for i = -1, 6 do -- check volume is clear
+		for j = -1, 3 do
+		for k = -8, -1 do
+			local vi = area:index(x + i, y + j, z + k)
 			local nodid = data[vi]
-			if nodid ~= c_air and nodid ~= c_ignore then
-				minetest.add_node(pos, {name="default:sandstonebrick"})
-				pos.y = pos.y + 1
-				minetest.add_node(pos, {name="default:sandstonebrick"})
+			if nodid ~= c_air and nodid ~= c_ignore then -- if volume obstructed then seal up doorway, replace spawner
+				local vi = area:index(x, y, z)
+				data[vi] = c_brick
+				local via = area:index(x, y+1, z)
+				data[via] = c_brick
+
+				vm:set_data(data)
+				vm:write_to_map()
+				vm:update_map()
 				return
 			end
 		end
-		minetest.add_node(pos, {name="air"})
+		end
+		end
+
+		local vi = area:index(x, y, z) -- volume checked so replace spawner with air
+		data[vi] = c_air
+
+		vm:set_data(data)
+		vm:write_to_map()
+		vm:update_map()
+
 		local path = minetest.get_modpath("projects") .. "/schems/flat.mts"
 		minetest.place_schematic({x=pos.x-1, y=pos.y-1, z=pos.z-8}, path, 270, nil, true)
 	end,
@@ -181,22 +210,42 @@ minetest.register_abm({
 		local z = pos.z
 		local c_air = minetest.get_content_id("air")
 		local c_ignore = minetest.get_content_id("ignore")
+		local c_brick = minetest.get_content_id("default:sandstonebrick")
+
 		local vm = minetest.get_voxel_manip()
-		local pos1 = {x=x+1, y=y-1, z=z-1}
+		local pos1 = {x=x, y=y-1, z=z-1}
 		local pos2 = {x=x+8, y=y+3, z=z+6}
 		local emin, emax = vm:read_from_map(pos1, pos2)
 		local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
 		local data = vm:get_data()
-		for vi in area:iterp(pos1, pos2) do
+
+		for i = 1, 8 do -- check volume is clear
+		for j = -1, 3 do
+		for k = -1, 6 do
+			local vi = area:index(x + i, y + j, z + k)
 			local nodid = data[vi]
-			if nodid ~= c_air and nodid ~= c_ignore then
-				minetest.add_node(pos, {name="default:sandstonebrick"})
-				pos.y = pos.y + 1
-				minetest.add_node(pos, {name="default:sandstonebrick"})
+			if nodid ~= c_air and nodid ~= c_ignore then -- if volume obstructed then seal up doorway, replace spawner
+				local vi = area:index(x, y, z)
+				data[vi] = c_brick
+				local via = area:index(x, y+1, z)
+				data[via] = c_brick
+
+				vm:set_data(data)
+				vm:write_to_map()
+				vm:update_map()
 				return
 			end
 		end
-		minetest.add_node(pos, {name="air"})
+		end
+		end
+
+		local vi = area:index(x, y, z) -- volume checked so replace spawner with air
+		data[vi] = c_air
+
+		vm:set_data(data)
+		vm:write_to_map()
+		vm:update_map()
+
 		local path = minetest.get_modpath("projects") .. "/schems/flat.mts"
 		minetest.place_schematic({x=pos.x+1, y=pos.y-1, z=pos.z-1}, path, 180, nil, true)
 	end,
@@ -214,22 +263,41 @@ minetest.register_abm({
 		local z = pos.z
 		local c_air = minetest.get_content_id("air")
 		local c_ignore = minetest.get_content_id("ignore")
+		local c_brick = minetest.get_content_id("default:sandstonebrick")
+
 		local vm = minetest.get_voxel_manip()
 		local pos1 = {x=x-8, y=y-1, z=z-6}
-		local pos2 = {x=x-1, y=y+3, z=z+1}
+		local pos2 = {x=x, y=y+3, z=z+1}
 		local emin, emax = vm:read_from_map(pos1, pos2)
 		local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
 		local data = vm:get_data()
-		for vi in area:iterp(pos1, pos2) do
+
+		for i = -8, -1 do -- check volume is clear
+		for j = -1, 3 do
+		for k = -6, 1 do
+			local vi = area:index(x + i, y + j, z + k)
 			local nodid = data[vi]
-			if nodid ~= c_air and nodid ~= c_ignore then
-				minetest.add_node(pos, {name="default:sandstonebrick"})
-				pos.y = pos.y + 1
-				minetest.add_node(pos, {name="default:sandstonebrick"})
+			if nodid ~= c_air and nodid ~= c_ignore then -- if volume obstructed then seal up doorway, replace spawner
+				local vi = area:index(x, y, z)
+				data[vi] = c_brick
+				local via = area:index(x, y+1, z)
+				data[via] = c_brick
+				vm:set_data(data)
+				vm:write_to_map()
+				vm:update_map()
 				return
 			end
 		end
-		minetest.add_node(pos, {name="air"})
+		end
+		end
+
+		local vi = area:index(x, y, z) -- volume checked so replace spawner with air
+		data[vi] = c_air
+
+		vm:set_data(data)
+		vm:write_to_map()
+		vm:update_map()
+
 		local path = minetest.get_modpath("projects") .. "/schems/flat.mts"
 		minetest.place_schematic({x=pos.x-8, y=pos.y-1, z=pos.z-6}, path, 0, nil, true)
 	end,
@@ -251,51 +319,57 @@ minetest.register_abm({
 		local c_glass = minetest.get_content_id("default:obsidian_glass")
 		local c_flate = minetest.get_content_id("projects:flate")
 		local c_flatw = minetest.get_content_id("projects:flatw")
-		--local c_horin = minetest.get_content_id("projects:horin")
-		--local c_horis = minetest.get_content_id("projects:horis")
-		--local c_horie = minetest.get_content_id("projects:horie")
-		--local c_horiw = minetest.get_content_id("projects:horiw")
 
+		local len = math.random(16, 64)
 		local vm = minetest.get_voxel_manip()
-		local pos1 = {x=x-1, y=y-1, z=z+1}
-		local pos2 = {x=x+4, y=y+3, z=z+32}
+		local pos1 = {x=x-1, y=y-1, z=z}
+		local pos2 = {x=x+4, y=y+3, z=z+len}
 		local emin, emax = vm:read_from_map(pos1, pos2)
 		local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
 		local data = vm:get_data()
 
-		for vi in area:iterp(pos1, pos2) do
+		for i = -1, 4 do -- check volume is clear
+		for j = -1, 3 do
+		for k = 1, len do
+			local vi = area:index(x + i, y + j, z + k)
 			local nodid = data[vi]
-			if nodid ~= c_air and nodid ~= c_ignore then
+			if nodid ~= c_air and nodid ~= c_ignore then -- if volume obstructed then seal up doorway, replace spawner
 				for i = 0, 3 do
 				for j = 0, 2 do
-					minetest.add_node({x=x+i, y=y+j, z=z}, {name="default:sandstonebrick"})
+					local vi = area:index(x+i, y+j, z)
+					data[vi] = c_brick
 				end
 				end
+				vm:set_data(data)
+				vm:write_to_map()
+				vm:update_map()
 				return
 			end
 		end
+		end
+		end
 
 		for i = -1, 4 do
 		for j = -1, 3 do
-		for k = 1, 32 do
+		for k = 1, len do
 			local vi = area:index(x + i, y + j, z + k)
-			if j == 3 and (i == 1 or i == 2) then
-				data[vi] = c_glass
-			elseif i == -1 or i == 4 or j == -1 or j == 3 or k == 32 then
+			if i == -1 or i == 4 or j == -1 or (j == 3 and (i <= 0 or i >= 3)) then
 				data[vi] = c_brick
+			elseif j == 3 or k == len then
+				data[vi] = c_glass
 			end
 		end
 		end
 		end
 
-		for k = 1, 32 do
-			if k <= 31 and math.random() < 0.1 then
+		for k = 1, len do
+			if k < len and math.random() < 0.1 then
 				local vi = area:index(x - 1, y, z + k)
 				data[vi] = c_flatw
 				local vi = area:index(x - 1, y + 1, z + k)
 				data[vi] = c_air
 			end
-			if k <= 31 and math.random() < 0.1 then
+			if k < len and math.random() < 0.1 then
 				local vi = area:index(x + 4, y, z + k)
 				data[vi] = c_flate
 				local vi = area:index(x + 4, y + 1, z + k)
@@ -303,11 +377,12 @@ minetest.register_abm({
 			end
 		end
 
+		local vi = area:index(x, y, z) -- volume checked so replace spawner with air
+		data[vi] = c_air
+
 		vm:set_data(data)
 		vm:write_to_map()
 		vm:update_map()
-
-		minetest.add_node(pos, {name="air"})
 	end,
 })
 
@@ -315,7 +390,7 @@ minetest.register_abm({
 
 minetest.register_abm({
 	nodenames = {"projects:horis"},
-	interval = 19,
+	interval = 23,
 	chance = 1,
 	action = function(pos, node)
 		local x = pos.x
@@ -327,13 +402,10 @@ minetest.register_abm({
 		local c_glass = minetest.get_content_id("default:obsidian_glass")
 		local c_flate = minetest.get_content_id("projects:flate")
 		local c_flatw = minetest.get_content_id("projects:flatw")
-		--local c_horin = minetest.get_content_id("projects:horin")
-		--local c_horis = minetest.get_content_id("projects:horis")
-		--local c_horie = minetest.get_content_id("projects:horie")
-		--local c_horiw = minetest.get_content_id("projects:horiw")
 
+		local len = math.random(16, 64)
 		local vm = minetest.get_voxel_manip()
-		local pos1 = {x=x-1, y=y-1, z=z-32}
+		local pos1 = {x=x-1, y=y-1, z=z-len}
 		local pos2 = {x=x+4, y=y+3, z=z-1}
 		local emin, emax = vm:read_from_map(pos1, pos2)
 		local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
@@ -353,25 +425,25 @@ minetest.register_abm({
 
 		for i = -1, 4 do
 		for j = -1, 3 do
-		for k = 1, 32 do
+		for k = 1,len do
 			local vi = area:index(x + i, y + j, z - k)
-			if j == 3 and (i == 1 or i == 2) then
-				data[vi] = c_glass
-			elseif i == -1 or i == 4 or j == -1 or j == 3 or k == 32 then
+			if i == -1 or i == 4 or j == -1 or (j == 3 and (i <= 0 or i >= 3)) then
 				data[vi] = c_brick
+			elseif j == 3 or k == len then
+				data[vi] = c_glass
 			end
 		end
 		end
 		end
 
-		for k = 1, 32 do
-			if k <= 31 and math.random() < 0.1 then
+		for k = 1, len do
+			if k < len and math.random() < 0.1 then
 				local vi = area:index(x - 1, y, z - k)
 				data[vi] = c_flatw
 				local vi = area:index(x - 1, y + 1, z - k)
 				data[vi] = c_air
 			end
-			if k <= 31 and math.random() < 0.1 then
+			if k < len and math.random() < 0.1 then
 				local vi = area:index(x + 4, y, z - k)
 				data[vi] = c_flate
 				local vi = area:index(x + 4, y + 1, z - k)
@@ -391,7 +463,7 @@ minetest.register_abm({
 
 minetest.register_abm({
 	nodenames = {"projects:horie"},
-	interval = 19,
+	interval = 29,
 	chance = 1,
 	action = function(pos, node)
 		local x = pos.x
@@ -403,14 +475,11 @@ minetest.register_abm({
 		local c_glass = minetest.get_content_id("default:obsidian_glass")
 		local c_flatn = minetest.get_content_id("projects:flatn")
 		local c_flats = minetest.get_content_id("projects:flats")
-		--local c_horin = minetest.get_content_id("projects:horin")
-		--local c_horis = minetest.get_content_id("projects:horis")
-		--local c_horie = minetest.get_content_id("projects:horie")
-		--local c_horiw = minetest.get_content_id("projects:horiw")
 
+		local len = math.random(16, 64)
 		local vm = minetest.get_voxel_manip()
 		local pos1 = {x=x+1, y=y-1, z=z-1}
-		local pos2 = {x=x+32, y=y+3, z=z+4}
+		local pos2 = {x=x+len, y=y+3, z=z+4}
 		local emin, emax = vm:read_from_map(pos1, pos2)
 		local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
 		local data = vm:get_data()
@@ -427,27 +496,27 @@ minetest.register_abm({
 			end
 		end
 
-		for i = 1, 32 do
+		for i = 1, len do
 		for j = -1, 3 do
 		for k = -1, 4 do
 			local vi = area:index(x + i, y + j, z + k)
-			if j == 3 and (k == 1 or k == 2) then
-				data[vi] = c_glass
-			elseif k == -1 or k == 4 or j == -1 or j == 3 or i == 32 then
+			if k == -1 or k == 4 or j == -1 or (j == 3 and (k <= 0 or k >= 3)) then
 				data[vi] = c_brick
+			elseif j == 3 or i == len then
+				data[vi] = c_glass
 			end
 		end
 		end
 		end
 
-		for i = 1, 32 do
-			if i <= 31 and math.random() < 0.1 then
+		for i = 1, len do
+			if i < len and math.random() < 0.1 then
 				local vi = area:index(x + i, y, z - 1)
 				data[vi] = c_flats
 				local vi = area:index(x + i, y + 1, z - 1)
 				data[vi] = c_air
 			end
-			if i <= 31 and math.random() < 0.1 then
+			if i < len and math.random() < 0.1 then
 				local vi = area:index(x + i, y, z + 4)
 				data[vi] = c_flatn
 				local vi = area:index(x + i, y + 1, z + 4)
@@ -467,7 +536,7 @@ minetest.register_abm({
 
 minetest.register_abm({
 	nodenames = {"projects:horiw"},
-	interval = 19,
+	interval = 31,
 	chance = 1,
 	action = function(pos, node)
 		local x = pos.x
@@ -479,13 +548,10 @@ minetest.register_abm({
 		local c_glass = minetest.get_content_id("default:obsidian_glass")
 		local c_flatn = minetest.get_content_id("projects:flatn")
 		local c_flats = minetest.get_content_id("projects:flats")
-		--local c_horin = minetest.get_content_id("projects:horin")
-		--local c_horis = minetest.get_content_id("projects:horis")
-		--local c_horie = minetest.get_content_id("projects:horie")
-		--local c_horiw = minetest.get_content_id("projects:horiw")
 
+		local len = math.random(16, 64)
 		local vm = minetest.get_voxel_manip()
-		local pos1 = {x=x-32, y=y-1, z=z-1}
+		local pos1 = {x=x-len, y=y-1, z=z-1}
 		local pos2 = {x=x-1, y=y+3, z=z+4}
 		local emin, emax = vm:read_from_map(pos1, pos2)
 		local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
@@ -503,27 +569,27 @@ minetest.register_abm({
 			end
 		end
 
-		for i = 1, 32 do
+		for i = 1, len do
 		for j = -1, 3 do
 		for k = -1, 4 do
 			local vi = area:index(x - i, y + j, z + k)
-			if j == 3 and (k == 1 or k == 2) then
-				data[vi] = c_glass
-			elseif k == -1 or k == 4 or j == -1 or j == 3 or i == 32 then
+			if k == -1 or k == 4 or j == -1 or (j == 3 and (k <= 0 or k >= 3)) then
 				data[vi] = c_brick
+			elseif j == 3 or i == len then
+				data[vi] = c_glass
 			end
 		end
 		end
 		end
 
-		for i = 1, 32 do
-			if i <= 31 and math.random() < 0.1 then
+		for i = 1, len do
+			if i < len and math.random() < 0.1 then
 				local vi = area:index(x - i, y, z - 1)
 				data[vi] = c_flats
 				local vi = area:index(x - i, y + 1, z - 1)
 				data[vi] = c_air
 			end
-			if i <= 31 and math.random() < 0.1 then
+			if i < len and math.random() < 0.1 then
 				local vi = area:index(x - i, y, z + 4)
 				data[vi] = c_flatn
 				local vi = area:index(x - i, y + 1, z + 4)
@@ -538,3 +604,236 @@ minetest.register_abm({
 		minetest.add_node(pos, {name="air"})
 	end,
 })
+
+-- vertical space above. spawn node is below minimum point
+
+minetest.register_abm({
+	nodenames = {"projects:verta"},
+	interval = 37,
+	chance = 1,
+	action = function(pos, node)
+		local x = pos.x
+		local y = pos.y
+		local z = pos.z
+		local c_air = minetest.get_content_id("air")
+		local c_brick = minetest.get_content_id("default:sandstonebrick")
+		local c_slab = minetest.get_content_id("stairs:slab_stonebrick")
+		local c_glass = minetest.get_content_id("default:obsidian_glass")
+		local c_horin = minetest.get_content_id("projects:horin")
+		local c_horis = minetest.get_content_id("projects:horis")
+		local c_verta = minetest.get_content_id("projects:verta")
+		local c_vertopa = minetest.get_content_id("projects:vertopa")
+
+		local vm = minetest.get_voxel_manip()
+		local pos1 = {x=x, y=y+1, z=z}
+		local pos2 = {x=x+19, y=y+6, z=z+29}
+		local emin, emax = vm:read_from_map(pos1, pos2)
+		local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
+		local data = vm:get_data()
+
+		for i = 0, 19 do
+		for j = 1, 5 do
+		for k = 0, 29 do
+			local vi = area:index(x + i, y + j, z + k)
+			if k == 0 or k == 29
+			or ((j == 1 or j == 5) and (k <= 9 or k >= 20))
+			or ((i == 9 or i == 10) and (k >= 9 and k <= 20)) then
+				data[vi] = c_brick
+			elseif i == 0 or i == 19 then
+				data[vi] = c_glass
+			end
+		end
+		end
+		end
+
+		for ramp = 0, 4 do
+			for ii = 1, 8 do
+			for jj = 1, 2 do
+			for kk = 0, 1 do
+				local vi = area:index(x + ii, y + ramp + jj, z + 10 + ramp * 2 + kk)
+				local vie = area:index(x + 19 - ii, y + ramp + jj, z + 19 - ramp * 2 - kk)
+				if jj == 1 then
+					data[vi] = c_brick
+					data[vie] = c_brick
+				elseif (jj == 2 and kk == 1) then
+					data[vi] = c_slab
+					data[vie] = c_slab
+				end
+			end
+			end
+			end
+		end
+
+		local horini = math.random(1, 15)
+		for i = horini, horini + 3 do
+		for j = 2, 4 do
+			local vi = area:index(x + i, y + j, z + 29)
+			if i == horini and j == 2 then
+				data[vi] = c_horin
+			else
+				data[vi] = c_air
+			end
+		end
+		end
+
+		local horisi = math.random(1, 15)
+		for i = horisi, horisi + 3 do
+		for j = 2, 4 do
+			local vi = area:index(x + i, y + j, z)
+			if i == horisi and j == 2 then
+				data[vi] = c_horis
+			else
+				data[vi] = c_air
+			end
+		end
+		end
+
+		local vi = area:index(x, y + 5, z)
+		if math.random() < 0.9 then
+			data[vi] = c_verta
+		else
+			data[vi] = c_vertopa
+		end
+
+		vm:set_data(data)
+		vm:write_to_map()
+		vm:update_map()
+
+		minetest.add_node(pos, {name="default:sandstonebrick"})
+	end,
+})
+
+-- vertical space entrance above. spawn node is below minimum point
+
+minetest.register_abm({
+	nodenames = {"projects:vertenta"},
+	interval = 43,
+	chance = 1,
+	action = function(pos, node)
+		local x = pos.x
+		local y = pos.y
+		local z = pos.z
+		local c_brick = minetest.get_content_id("default:sandstonebrick")
+		local c_slab = minetest.get_content_id("stairs:slab_stonebrick")
+		local c_glass = minetest.get_content_id("default:obsidian_glass")
+		local c_verta = minetest.get_content_id("projects:verta")
+
+		local vm = minetest.get_voxel_manip()
+		local pos1 = {x=x, y=y+1, z=z}
+		local pos2 = {x=x+19, y=y+6, z=z+29}
+		local emin, emax = vm:read_from_map(pos1, pos2)
+		local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
+		local data = vm:get_data()
+
+		for i = 0, 19 do
+		for j = 1, 5 do
+		for k = 0, 29 do
+			local vi = area:index(x + i, y + j, z + k)
+			if j == 1 or i == 0 or i == 19
+			or (j == 5 and (k <= 9 or k >= 20))
+			or ((i == 9 or i == 10) and (k >= 9 and k <= 20)) then
+				data[vi] = c_brick
+			end
+		end
+		end
+		end
+
+		for ramp = 0, 4 do
+			for ii = 1, 8 do
+			for jj = 1, 2 do
+			for kk = 0, 1 do
+				local vi = area:index(x + ii, y + ramp + jj, z + 10 + ramp * 2 + kk)
+				local vie = area:index(x + 19 - ii, y + ramp + jj, z + 19 - ramp * 2 - kk)
+				if jj == 1 then
+					data[vi] = c_brick
+					data[vie] = c_brick
+				elseif (jj == 2 and kk == 1) then
+					data[vi] = c_slab
+					data[vie] = c_slab
+				end
+			end
+			end
+			end
+		end
+
+		local vi = area:index(x, y + 5, z)
+		data[vi] = c_verta
+
+		vm:set_data(data)
+		vm:write_to_map()
+		vm:update_map()
+
+		minetest.add_node(pos, {name="default:sandstonebrick"})
+	end,
+})
+
+-- vertical space roof above. spawn node is below minimum point
+
+minetest.register_abm({
+	nodenames = {"projects:vertopa"},
+	interval = 41,
+	chance = 1,
+	action = function(pos, node)
+		local x = pos.x
+		local y = pos.y
+		local z = pos.z
+		local c_air = minetest.get_content_id("air")
+		local c_brick = minetest.get_content_id("default:sandstonebrick")
+		local c_glass = minetest.get_content_id("default:obsidian_glass")
+		local c_horin = minetest.get_content_id("projects:horin")
+		local c_horis = minetest.get_content_id("projects:horis")
+
+		local vm = minetest.get_voxel_manip()
+		local pos1 = {x=x, y=y+1, z=z}
+		local pos2 = {x=x+19, y=y+5, z=z+29}
+		local emin, emax = vm:read_from_map(pos1, pos2)
+		local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
+		local data = vm:get_data()
+
+		for i = 0, 19 do
+		for j = 1, 5 do
+		for k = 0, 29 do
+			local vi = area:index(x + i, y + j, z + k)
+			if k == 0 or k == 29
+			or ((j == 1 or j == 5) and (k <= 9 or k >= 20))
+			or ((i == 9 or i == 10) and (k >= 9 and k <= 20)) then
+				data[vi] = c_brick
+			elseif i == 0 or i == 19 or j == 5
+			or (j == 2 and ((k == 9 and i <= 8) or (k == 20 and i >= 11))) then
+				data[vi] = c_glass
+			end
+		end
+		end
+		end
+
+		local horini = math.random(1, 15)
+		for i = horini, horini + 3 do
+		for j = 2, 4 do
+			local vi = area:index(x + i, y + j, z + 29)
+			if i == horini and j == 2 then
+				data[vi] = c_horin
+			else
+				data[vi] = c_air
+			end
+		end
+		end
+
+		local horisi = math.random(1, 15)
+		for i = horisi, horisi + 3 do
+		for j = 2, 4 do
+			local vi = area:index(x + i, y + j, z)
+			if i == horisi and j == 2 then
+				data[vi] = c_horis
+			else
+				data[vi] = c_air
+			end
+		end
+		end
+
+		vm:set_data(data)
+		vm:write_to_map()
+		vm:update_map()
+
+		minetest.add_node(pos, {name="default:sandstonebrick"})
+	end,
+})