Add graphite and sulfur as functional items

mods/crafting/recipes.lua

@@ -84,7 +84,7 @@ crafting.register_craft(
    {
       output = "default:ingot_steel 2",
       items = {
-         "default:lump_coal",
+         "default:sheet_graphite",
          "default:ingot_wrought_iron 4",
       }
 })
@@ -93,7 +93,7 @@ crafting.register_craft(
    {
       output = "default:ingot_carbon_steel 2",
       items = {
-         "default:lump_coal 2",
+         "default:sheet_graphite 2",
          "default:ingot_wrought_iron 7",
       }
 })
@@ -460,8 +460,17 @@ crafting.register_craft(
    {
       output = "default:fertilizer",
       items = {
-         "default:fern 3",
-         "default:fiber",
+         "default:fern 4",
+         "default:fiber 3",
+      }
+})
+
+crafting.register_craft(
+   {
+      output = "default:fertilizer 2",
+      items = {
+         "default:lump_sulfur 3",
+         "default:fiber 3",
       }
 })
 

mods/default/craftitems.lua

@@ -34,6 +34,15 @@ minetest.register_craftitem(
       inventory_image = "default_pearl.png",
 })
 
+-- Mineral misc.
+
+minetest.register_craftitem(
+   "default:sheet_graphite",
+   {
+      description = "Graphite Sheet",
+      inventory_image = "default_sheet_graphite.png",
+})
+
 -- Mineral lumps
 
 minetest.register_craftitem(
@@ -57,13 +66,6 @@ minetest.register_craftitem(
       inventory_image = "default_lump_iron.png",
 })
 
-minetest.register_craftitem(
-   "default:lump_graphite",
-   {
-      description = "Graphite Lump",
-      inventory_image = "default_lump_graphite.png",
-})
-
 minetest.register_craftitem(
    "default:lump_tin",
    {

mods/default/mapgen.lua

@@ -632,7 +632,7 @@ minetest.register_decoration(
       flags = "place_center_x, place_center_z",
       replacements = {["default:leaves"] = "default:dry_leaves"},
       schematic = minetest.get_modpath("default") .. "/schematics/default_bush.mts",
-      y_min = -32000,
+      y_min = 0,
       y_max = 32000,
       rotation = "0",
 })
@@ -663,7 +663,7 @@ minetest.register_decoration(
       flags = "place_center_x, place_center_z",
       schematic = minetest.get_modpath("default")
          .. "/schematics/default_small_rock.mts",
-      y_min = -32000,
+      y_min = 0,
       y_max = 32000,
       rotation = "random",
 })
@@ -678,11 +678,25 @@ minetest.register_decoration(
       flags = "place_center_x, place_center_z",
       schematic = minetest.get_modpath("default")
          .. "/schematics/default_large_rock.mts",
-      y_min = -32000,
+      y_min = 0,
       y_max = 32000,
       rotation = "random",
 })
 
+-- Sulfur decorations
+
+minetest.register_decoration(
+   {
+      deco_type = "simple",
+      place_on = "default:dry_dirt",
+      sidelen = 16,
+      fill_ratio = 0.005,
+      biomes = {"Wasteland"},
+      decoration = {"default:stone_with_sulfur"},
+      y_min = 2,
+      y_max = 14,
+})
+
 -- Clam decorations
 
 minetest.register_decoration(
@@ -697,6 +711,31 @@ minetest.register_decoration(
       y_max = 1,
 })
 
+-- Graphite ore
+
+minetest.register_ore( -- Common above sea level mainly
+   {
+      ore_type       = "scatter",
+      ore            = "default:stone_with_graphite",
+      wherein        = "default:stone",
+      clust_scarcity = 9*9*9,
+      clust_num_ores = 8,
+      clust_size     = 8,
+      y_min          = -8,
+      y_max          = 32,
+})
+
+minetest.register_ore( -- Slight scattering deeper down
+   {
+      ore_type       = "scatter",
+      ore            = "default:stone_with_graphite",
+      wherein        = "default:stone",
+      clust_scarcity = 13*13*13,
+      clust_num_ores = 6,
+      clust_size     = 8,
+      y_min          = -31000,
+      y_max          = -32,
+})
 
 -- Coal ore
 

mods/default/nodes.lua

@@ -5,6 +5,26 @@
 
 -- Ores
 
+minetest.register_node(
+   "default:stone_with_sulfur",
+   {
+      description = "Stone with Sulfur",
+      tiles = {"default_stone.png^default_mineral_sulfur.png"},
+      groups = {cracky = 2, stone = 1, not_in_craftingguide = 1},
+      drop = "default:lump_sulfur",
+      sounds = default.node_sound_stone_defaults(),
+})
+
+minetest.register_node(
+   "default:stone_with_graphite",
+   {
+      description = "Stone with Graphite",
+      tiles = {"default_stone.png^default_mineral_graphite.png"},
+      groups = {cracky = 2, stone = 1, not_in_craftingguide = 1},
+      drop = "default:sheet_graphite",
+      sounds = default.node_sound_stone_defaults(),
+})
+
 minetest.register_node(
    "default:stone_with_coal",
    {