Small scale anaerobic digestion system

data/json/construction.json

@@ -2523,6 +2523,28 @@
     "pre_special": "check_empty",
     "post_terrain": "f_fvat_wood_empty"
   },
+  {
+    "type": "construction",
+    "id": "constr_compost_empty",
+    "group": "build_compost_tank",
+    "category": "FURN",
+    "required_skills": [ [ "fabrication", 5 ], [ "mechanics", 2 ] ],
+    "time": "180 m",
+    "qualities": [ [ { "id": "HAMMER", "level": 2 } ], [ { "id": "SAW_M", "level": 1 } ], [ { "id": "SMOOTH", "level": 1 } ] ],
+    "using": [ [ "welding_standard", 10 ] ],
+    "components": [
+      [ [ "brick", 60 ] ],
+      [ [ "pipe", 8 ] ],
+      [ [ "pipe_fittings", 8 ] ],
+      [ [ "sheet_metal", 1 ] ],
+      [ [ "metal_tank", 1 ] ],
+      [ [ "hose", 2 ], [ "makeshift_hose", 2 ] ],
+      [ [ "mortar_build", 10 ], [ "mortar_lime", 10 ] ],
+      [ [ "water", 10 ], [ "water_clean", 10 ] ]
+    ],
+    "pre_terrain": "t_pit",
+    "post_terrain": "f_compost_empty"
+  },
   {
     "type": "construction",
     "id": "constr_wood_keg",

data/json/construction_group.json

@@ -309,6 +309,11 @@
     "id": "build_wooden_fermenting_vat",
     "name": "Build Wooden Fermenting Vat"
   },
+  {
+    "type": "construction_group",
+    "id": "build_compost_tank",
+    "name": "Build Small Scale Anaerobic Digestion System"
+  },
   {
     "type": "construction_group",
     "id": "build_fire_ring",

data/json/furniture_and_terrain/furniture-tools.json

@@ -1330,6 +1330,66 @@
       ]
     }
   },
+  {
+    "type": "furniture",
+    "id": "f_compost_empty",
+    "name": "anaerobic digester",
+    "looks_like": "f_standing_tank",
+    "description": "A 1000 L anaerobic digester.",
+    "symbol": "O",
+    "color": "brown",
+    "move_cost_mod": -1,
+    "required_str": -1,
+    "flags": [ "NOITEM", "SEALED", "TRANSPARENT", "FLAMMABLE", "CONTAINER", "DONT_REMOVE_ROTTEN" ],
+    "examine_action": "compost_empty",
+    "deconstruct": {
+      "items": [
+        { "item": "brick", "count": 60 },
+        { "item": "pipe", "count": [ 6, 8 ] },
+        { "item": "pipe_fittings", "count": [ 6, 8 ] },
+        { "item": "sheet_metal_small", "count": [ 10, 20 ] },
+        { "item": "metal_tank", "count": 1 },
+        { "item": "hose", "count": 1 }
+      ]
+    },
+    "bash": {
+      "str_min": 3,
+      "str_max": 45,
+      "sound": "smash!",
+      "sound_fail": "whump.",
+      "items": [ { "item": "scrap", "count": [ 8, 32 ] } ]
+    }
+  },
+  {
+    "type": "furniture",
+    "id": "f_compost_full",
+    "name": "filled anaerobic digester",
+    "looks_like": "f_standing_tank",
+    "description": "A 1000L anaerobic digester.",
+    "symbol": "O",
+    "color": "brown_cyan",
+    "move_cost_mod": -1,
+    "required_str": -1,
+    "flags": [ "NOITEM", "SEALED", "TRANSPARENT", "FLAMMABLE", "CONTAINER", "DONT_REMOVE_ROTTEN" ],
+    "examine_action": "compost_full",
+    "deconstruct": {
+      "items": [
+        { "item": "brick", "count": 60 },
+        { "item": "pipe", "count": [ 6, 8 ] },
+        { "item": "pipe_fittings", "count": [ 6, 8 ] },
+        { "item": "sheet_metal_small", "count": [ 10, 20 ] },
+        { "item": "metal_tank", "count": 1 },
+        { "item": "hose", "count": 1 }
+      ]
+    },
+    "bash": {
+      "str_min": 12,
+      "str_max": 50,
+      "sound": "smash!",
+      "sound_fail": "whump.",
+      "items": [ { "item": "scrap", "count": [ 8, 32 ] } ]
+    }
+  },
   {
     "type": "furniture",
     "id": "f_butcher_rack",

data/json/items/ammo_types.json

@@ -527,6 +527,12 @@
     "name": "propane",
     "default": "propane"
   },
+  {
+    "type": "ammunition_type",
+    "id": "biogas",
+    "name": "biogas",
+    "default": "biogas"
+  },
   {
     "type": "ammunition_type",
     "id": "conc_alcohol",

data/json/items/biosignatures.json

@@ -26,7 +26,7 @@
     "name": { "str": "cow pie" },
     "copy-from": "feces_bird",
     "weight": "750 g",
-    "volume": "250 ml",
+    "volume": "750 ml",
     "description": "A fresh cow pie; this could probably be used to make some great fertilizer."
   },
   {
@@ -42,7 +42,7 @@
     "name": { "str_sp": "manure" },
     "copy-from": "feces_bird",
     "weight": "250 g",
-    "volume": "125 ml",
+    "volume": "250 ml",
     "description": "Common manure, could probably be used to make some great fertilizer."
   },
   {

data/json/items/chemicals_and_resources.json

@@ -349,6 +349,33 @@
     "category": "chems",
     "fun": -30
   },
+  {
+    "type": "COMESTIBLE",
+    "id": "fermentable_liquid_mixture",
+    "name": { "str_sp": "fermentable liquid mixture" },
+    "volume": "500 ml",
+    "weight": "500 g",
+    "description": "A mixture of various organic wastes and water.  Wait about two months for them to be fermented in a tank.",
+    "copy-from": "fertilizer_liquid",
+    "price": 0,
+    "price_postapoc": 0,
+    "flags": [ "NUTRIENT_OVERRIDE", "TRADER_AVOID" ],
+    "compostable": { "time": "60 days", "results": [ "fermented_fertilizer_liquid", "biogas" ] },
+    "charges": 1
+  },
+  {
+    "type": "COMESTIBLE",
+    "id": "fermented_fertilizer_liquid",
+    "name": { "str_sp": "fermented fertilizer liquid" },
+    "volume": "500 ml",
+    "weight": "400 g",
+    "description": "A mixture of fermented biomass, will become liquid fertilizer after simple treatment.",
+    "copy-from": "fertilizer_liquid",
+    "price": 0,
+    "price_postapoc": 0,
+    "flags": [ "NUTRIENT_OVERRIDE", "TRADER_AVOID" ],
+    "charges": 1
+  },
   {
     "type": "COMESTIBLE",
     "id": "fertilizer_commercial",

data/json/items/containers/containers.json

@@ -4339,6 +4339,74 @@
     "flags": [ "GAS_TANK", "COLLAPSE_CONTENTS", "NO_SALVAGE" ],
     "melee_damage": { "bash": 10 }
   },
+  {
+    "id": "small_biogas_tank",
+    "type": "TOOL",
+    "category": "container",
+    "name": { "str": "small biogas tank" },
+    "description": "A small tank of biogas, commonly used for camping stoves and torches.",
+    "copy-from": "small_propane_tank",
+    "pocket_data": [
+      {
+        "pocket_type": "CONTAINER",
+        "airtight": true,
+        "watertight": true,
+        "rigid": true,
+        "ammo_restriction": { "biogas": 3000 }
+      }
+    ]
+  },
+  {
+    "id": "medium_biogas_tank",
+    "type": "TOOL",
+    "category": "container",
+    "name": { "str": "medium biogas tank" },
+    "description": "A medium-sized tank of biogas, commonly used for barbeques.",
+    "copy-from": "medium_propane_tank",
+    "pocket_data": [
+      {
+        "pocket_type": "CONTAINER",
+        "airtight": true,
+        "watertight": true,
+        "rigid": true,
+        "ammo_restriction": { "biogas": 15000 }
+      }
+    ]
+  },
+  {
+    "id": "large_biogas_tank",
+    "type": "TOOL",
+    "category": "container",
+    "name": { "str": "large biogas tank" },
+    "description": "A large tank of biogas, commonly used for heating.",
+    "copy-from": "large_propane_tank",
+    "pocket_data": [
+      {
+        "pocket_type": "CONTAINER",
+        "airtight": true,
+        "watertight": true,
+        "rigid": true,
+        "ammo_restriction": { "biogas": 60000 }
+      }
+    ]
+  },
+  {
+    "id": "xl_biogas_tank",
+    "type": "TOOL",
+    "category": "container",
+    "name": { "str": "extra large biogas tank" },
+    "description": "A massive tank of biogas, commonly used for heating a home or vehicle.",
+    "copy-from": "xl_propane_tank",
+    "pocket_data": [
+      {
+        "pocket_type": "CONTAINER",
+        "airtight": true,
+        "watertight": true,
+        "rigid": true,
+        "ammo_restriction": { "biogas": 300000 }
+      }
+    ]
+  },
   {
     "id": "shot_glass",
     "type": "GENERIC",

data/json/items/fuel.json

@@ -269,6 +269,18 @@
     "color": "white",
     "ammo_type": "propane"
   },
+  {
+    "id": "biogas",
+    "type": "AMMO",
+    "name": { "str_sp": "biogas" },
+    "copy-from": "propane",
+    "description": "Biogas gathered from anaerobic digester system, can be used in biogas cooker.",
+    "price": 0,
+    "price_postapoc": 0,
+    "container": "small_biogas_tank",
+    "material": [ "hydrocarbons" ],
+    "ammo_type": "biogas"
+  },
   {
     "id": "chem_turpentine",
     "type": "AMMO",

data/json/items/tool/cooking.json

@@ -1050,6 +1050,25 @@
     "flags": [ "FIRESTARTER" ],
     "melee_damage": { "bash": 4 }
   },
+  {
+    "id": "biogas_cooker",
+    "type": "TOOL",
+    "name": { "str": "biogas cooker" },
+    "description": "A simple heater powered by biogas.  It is designed for cooking food.",
+    "copy-from": "propane_cooker",
+    "ammo": [ "biogas" ],
+    "pocket_data": [
+      {
+        "pocket_type": "MAGAZINE",
+        "airtight": true,
+        "watertight": true,
+        "rigid": true,
+        "ammo_restriction": { "biogas": 3000 }
+      }
+    ],
+    "charges_per_use": 8,
+    "use_action": [ "HOTPLATE", "HEAT_FOOD", { "type": "firestarter", "moves": 100, "moves_slow": 1000 } ]
+  },
   {
     "id": "acetylene_cooker",
     "type": "TOOL",

data/json/recipes/recipe_medsandchemicals.json

@@ -820,6 +820,39 @@
     "tools": [ [ [ "surface_heat", 2, "LIST" ] ] ],
     "components": [ [ [ "bag_plastic", 1 ], [ "heatpack_used", 1 ] ], [ [ "oxy_powder", 5 ] ], [ [ "scrap", 1 ] ] ]
   },
+  {
+    "type": "recipe",
+    "activity_level": "LIGHT_EXERCISE",
+    "result": "fermentable_liquid_mixture",
+    "category": "CC_CHEM",
+    "subcategory": "CSC_CHEM_CHEMICALS",
+    "skill_used": "survival",
+    "difficulty": 2,
+    "time": "2 m",
+    "charges": 3,
+    "autolearn": true,
+    "batch_time_factors": [ 90, 4 ],
+    "flags": [ "BLIND_EASY", "ALLOW_ROTTEN" ],
+    "components": [ [ [ "water", 3 ], [ "water_clean", 3 ] ] ],
+    "using": [ [ "organic_waste", 1 ] ]
+  },
+  {
+    "type": "recipe",
+    "activity_level": "LIGHT_EXERCISE",
+    "result": "fermentable_liquid_mixture",
+    "id_suffix": "hard",
+    "category": "CC_CHEM",
+    "subcategory": "CSC_CHEM_CHEMICALS",
+    "skill_used": "survival",
+    "difficulty": 2,
+    "time": "30 m",
+    "charges": 5,
+    "autolearn": true,
+    "proficiencies": [ { "proficiency": "prof_intro_chemistry" } ],
+    "batch_time_factors": [ 70, 4 ],
+    "flags": [ "BLIND_HARD", "ALLOW_ROTTEN" ],
+    "components": [ [ [ "ruined_chunks", 20 ] ], [ [ "water", 5 ], [ "water_clean", 5 ] ] ]
+  },
   {
     "type": "recipe",
     "activity_level": "LIGHT_EXERCISE",
@@ -830,19 +863,15 @@
     "skill_used": "survival",
     "difficulty": 2,
     "time": "20 m",
+    "charges": 5,
     "autolearn": true,
-    "//": "Too simple. Just mixing feces and chitin with water. Basic chemistry shall be enough for this.",
+    "//": "Simply heating fermented fertilizer liquid.",
     "proficiencies": [ { "proficiency": "prof_intro_chemistry" } ],
     "batch_time_factors": [ 80, 4 ],
     "flags": [ "BLIND_HARD", "ALLOW_ROTTEN" ],
     "qualities": [ { "id": "BOIL", "level": 1 } ],
     "tools": [ [ [ "surface_heat", 10, "LIST" ] ] ],
-    "components": [
-      [ [ "water", 4 ], [ "water_clean", 4 ] ],
-      [ [ "meal_bone", 2 ], [ "meal_bone_tainted", 4 ] ],
-      [ [ "meal_chitin_piece", 1 ] ],
-      [ [ "feces_bird", 10 ], [ "feces_roach", 10 ], [ "feces_cow", 4 ], [ "feces_manure", 6 ] ]
-    ]
+    "components": [ [ [ "fermented_fertilizer_liquid", 1 ] ] ]
   },
   {
     "type": "recipe",

data/json/recipes/recipe_others.json

@@ -3134,6 +3134,19 @@
     "qualities": [ { "id": "SAW_M", "level": 1 }, { "id": "SCREW", "level": 1 } ],
     "components": [ [ [ "propane_lantern", 1 ] ], [ [ "pilot_light", 1 ] ], [ [ "metal_tank_little", 1 ] ], [ [ "duct_tape", 50 ] ] ]
   },
+  {
+    "type": "recipe",
+    "activity_level": "NO_EXERCISE",
+    "result": "biogas_cooker",
+    "category": "CC_OTHER",
+    "subcategory": "CSC_OTHER_TOOLS",
+    "skill_used": "fabrication",
+    "difficulty": 4,
+    "time": "1 m",
+    "reversible": true,
+    "autolearn": true,
+    "components": [ [ [ "propane_cooker", 1 ] ] ]
+  },
   {
     "type": "recipe",
     "activity_level": "MODERATE_EXERCISE",