Fix variable == nil error.

castles.lua

@@ -0,0 +1,106 @@
+local csize
+
+fun_caves.ice_castle = function(minp, maxp, data, p2data, area, node, heightmap, biomemap, biome_ids, underzone)
+	csize = vector.add(vector.subtract(maxp, minp), 1)
+	local write = false
+	local write_p2 = false
+
+	local max_height = -33000
+	local min_height = 33000
+	local avg_height = 0
+	local avg_count = 0
+	local height_grid = {{}, {}, {}, {}, {}, {}, {}, {}, {}, {}}
+	for z = minp.z, maxp.z do
+		local dz = math.ceil((z - minp.z + 1) / 8)
+		for x = minp.x, maxp.x do
+			local dx = math.ceil((x - minp.x + 1) / 8)
+			local ivm = area:index(x, maxp.y, z)
+			for y = maxp.y, minp.y, -1 do
+				if data[ivm] ~= node['air'] then
+					if y > minp.y + 50 then
+						return
+					end
+
+					if y > max_height then
+						max_height = y
+					end
+
+					if y < min_height then
+						min_height = y
+					end
+
+					print(dx, dz)
+					if not height_grid[dx][dz] then
+						height_grid[dx][dz] = -33000
+					end
+					if y > height_grid[dx][dz] then
+						height_grid[dx][dz] = y
+					end
+
+					if x == minp.x + 8 or x == maxp.x - 8 or z == minp.z + 8 or z == maxp.z - 8 then
+						avg_height = avg_height + y
+						avg_count = avg_count + 1
+					end
+
+					break
+				end
+				ivm = ivm - area.ystride
+			end
+		end
+	end
+	avg_height = avg_height / avg_count
+	max_height = max_height
+	for z = 1, 10 do
+		for x = 1, 10 do
+			height_grid[x][z] = height_grid[x][z] + math.random(20) + 5
+		end
+	end
+
+	local index = 0
+	local index3d = 0
+	local pos = {x=0, y=0, z=0}
+	local math_floor = math.floor
+	local math_max = math.max
+	local math_min = math.min
+	local math_log = math.log
+	for z = minp.z + 8, maxp.z - 8 do
+		local dz = math.ceil((z - minp.z + 1) / 8)
+		local r1z = (z - minp.z) % 8
+		local r2z = r1z < 4 and r1z or 7 - r1z
+		for x = minp.x + 8, maxp.x - 8 do
+			local dx = math.ceil((x - minp.x + 1) / 8)
+			local r1x = (x - minp.x) % 8
+			local r2x = r1x < 4 and r1x or 7 - r1x
+			index = index + 1
+			index3d = (z - minp.z) * (csize.y + 2) * csize.x + (x - minp.x) + 1
+			local ivm = area:index(x, minp.y, z)
+
+			for y = minp.y, maxp.y do
+				if y > height_grid[dx][dz] + 2 * math.min(r2x, r2z) then
+					data[ivm] = node['air']
+				elseif r1x == 0 and (dx < 3 or height_grid[dx - 1][dz] < y) then
+					data[ivm] = node['default:ice']
+				elseif r1x == 7 and (dx > 8 or height_grid[dx + 1][dz] < y) then
+					data[ivm] = node['default:ice']
+				elseif r1z == 0 and (dz < 3 or height_grid[dx][dz - 1] < y) then
+					data[ivm] = node['default:ice']
+				elseif r1z == 7 and (dz > 8 or height_grid[dx][dz + 1] < y) then
+					data[ivm] = node['default:ice']
+				elseif y > height_grid[dx][dz] + 2 * math.min(r2x, r2z) - 2 then
+					data[ivm] = node['default:ice']
+				elseif y > min_height - 5 and (not ((dx < 5 or dx > 6) or (dz < 5 or dz > 6)) or ((y - minp.y) % 8 ~= 0 and y < height_grid[dx][dz] - 5)) then
+					data[ivm] = node['air']
+				elseif y > min_height - 5 and (y - minp.y) % 8 == 0 then
+					data[ivm] = node['default:ice']
+				elseif y > min_height - 10 then
+					data[ivm] = node['default:ice']
+				end
+
+				ivm = ivm + area.ystride
+				index3d = index3d + csize.x
+			end
+		end
+	end
+
+	return write, write_p2
+end

decogen.lua

@@ -1,3 +1,5 @@
+dofile(fun_caves.path .. "/castles.lua")
+
 local deco_depth = -30  -- place cave stuff this far beneath the surface
 local light_depth = -13  -- depth above which to place corals/sea plants
 local water_level = 1
@@ -55,6 +57,13 @@ fun_caves.decogen = function(minp, maxp, data, p2data, area, node, heightmap, bi
 		end
 	end
 
+	if false and underzone and underzone.name == 'Caina' and math.abs(minp.y - underzone.floor) < math.abs(minp.y - underzone.ceiling) then
+		local write, writep2 = fun_caves.ice_castle(minp, maxp, data, p2data, area, node, heightmap, biomemap, biome_ids, underzone)
+		if write then
+			return write, writep2
+		end
+	end
+
 	local undersea = fun_caves.underzones['Styx'].sealevel
 
 	local write = false

elixir.lua

@@ -322,7 +322,7 @@ if fun_caves.register_status and fun_caves.set_status then
 		end
 
 		local armor = player:get_armor_groups()
-		if not (armor and armor.fleshy and armor.fleshy ~= value) then
+		if not (armor and armor.fleshy and armor.fleshy >= value) then
 			return
 		end
 

nodes.lua

@@ -456,3 +456,21 @@ minetest.register_craft({
 		{'', 'group:wood', ''},
 	},
 })
+
+minetest.register_craft({
+	output = 'default:diamondblock',
+	recipe = {
+		{'default:coalblock', 'default:coalblock', 'default:coalblock'},
+		{'default:coalblock', 'default:mese_crystal_fragment', 'default:coalblock'},
+		{'default:coalblock', 'default:coalblock', 'default:coalblock'},
+	}
+})
+
+minetest.register_craft({
+	output = 'default:mese_crystal 2',
+	recipe = {
+		{'default:diamond', 'default:diamond', 'default:diamond'},
+		{'default:diamond', 'default:mese_crystal', 'default:diamond'},
+		{'default:diamond', 'default:diamond', 'default:diamond'},
+	}
+})

wooden_buckets.lua

@@ -102,7 +102,7 @@ minetest.register_craftitem("fun_caves:bucket_wood_empty", {
 		end
 
 		local liquiddef = bucket.liquids[node.name]
-		if node.name ~= liquiddef.source then
+		if not liquiddef or node.name ~= liquiddef.source then
 			return
 		end