path: root/vampirism.patch

--- a/src/activity_handlers.cpp
+++ b/src/activity_handlers.cpp
@@ -231,6 +231,7 @@
 static const species_id species_HUMAN( "HUMAN" );
 static const species_id species_ZOMBIE( "ZOMBIE" );
 
+static const json_character_flag json_flag_VAMPIRE( "VAMPIRE" );
 static const json_character_flag json_flag_CANNIBAL( "CANNIBAL" );
 static const json_character_flag json_flag_PSYCHOPATH( "PSYCHOPATH" );
 static const json_character_flag json_flag_SAPIOVORE( "SAPIOVORE" );
@@ -616,7 +619,8 @@
                           !corpse.in_species( species_ZOMBIE ) );
     if( is_human && !( u.has_trait_flag( json_flag_CANNIBAL ) ||
                        u.has_trait_flag( json_flag_PSYCHOPATH ) ||
-                       u.has_trait_flag( json_flag_SAPIOVORE ) ) ) {
+                       u.has_trait_flag( json_flag_SAPIOVORE ) ||
+                       u.has_trait_flag( json_flag_VAMPIRE ) ) ) {
 
         if( u.is_player() ) {
             if( query_yn( _( "Would you dare desecrate the mortal remains of a fellow human being?" ) ) ) {

--- a/src/character.cpp
+++ b/src/character.cpp
@@ -343,6 +343,9 @@
 static const trait_id trait_NOMAD2( "NOMAD2" );
 static const trait_id trait_NOMAD3( "NOMAD3" );
 static const trait_id trait_NOPAIN( "NOPAIN" );
+static const trait_id trait_PAINREC1( "PAINREC1" );
+static const trait_id trait_PAINREC2( "PAINREC2" );
+static const trait_id trait_PAINREC3( "PAINREC3" );
 static const trait_id trait_PADDED_FEET( "PADDED_FEET" );
 static const trait_id trait_PAWS( "PAWS" );
 static const trait_id trait_PAWS_LARGE( "PAWS_LARGE" );
@@ -370,6 +373,9 @@
 static const trait_id trait_TOUGH_FEET( "TOUGH_FEET" );
 static const trait_id trait_TRANSPIRATION( "TRANSPIRATION" );
 static const trait_id trait_URSINE_EYE( "URSINE_EYE" );
+static const trait_id trait_VAMP_HUNGER( "VAMP_HUNGER" );
+static const trait_id trait_VAMP_SKIN( "VAMP_SKIN" );
+static const trait_id trait_VAMP_VISION( "VAMP_VISION" );
 static const trait_id trait_VISCOUS( "VISCOUS" );
 static const trait_id trait_WATERSLEEP( "WATERSLEEP" );
 static const trait_id trait_WEBBED( "WEBBED" );
@@ -2095,6 +2096,9 @@
     if( has_trait( trait_DEBUG_NIGHTVISION ) ) {
         vision_mode_cache.set( DEBUG_NIGHTVISION );
     }
+    if( has_active_mutation( trait_VAMP_VISION ) ) {
+        vision_mode_cache.set( VAMP_VISION );
+    }
     if( has_nv() ) {
         vision_mode_cache.set( NV_GOGGLES );
     }
@@ -2168,8 +2172,10 @@
     }
 
     float range = get_per() / 3.0f - eyes_encumb / 10.0f;
-    if( vision_mode_cache[NV_GOGGLES] || vision_mode_cache[NIGHTVISION_3] ||
-        vision_mode_cache[FULL_ELFA_VISION] || vision_mode_cache[CEPH_VISION] ) {
+    if( vision_mode_cache[VAMP_VISION] ) {
+        range += 15;
+    } else if( vision_mode_cache[NV_GOGGLES] || vision_mode_cache[NIGHTVISION_3] ||
+               vision_mode_cache[FULL_ELFA_VISION] || vision_mode_cache[CEPH_VISION] ) {
         range += 10;
     } else if( vision_mode_cache[NIGHTVISION_2] || vision_mode_cache[FELINE_VISION] ||
                vision_mode_cache[URSINE_VISION] || vision_mode_cache[ELFA_VISION] ) {
@@ -5442,7 +5447,15 @@
 {
     int pain_ticks = rate_multiplier;
     while( get_pain() > 0 && pain_ticks-- > 0 ) {
-        mod_pain( -roll_remainder( 0.2f + get_pain() / 50.0f ) );
+        if( has_trait( trait_PAINREC1 ) ) {
+            mod_pain( -roll_remainder( 0.2f + get_pain() / 45.0f ) );
+        } else if( has_trait( trait_PAINREC2 ) ) {
+            mod_pain( -roll_remainder( 0.2f + get_pain() / 40.0f ) );
+        } else if( has_trait( trait_PAINREC3 ) ) {
+            mod_pain( -roll_remainder( 0.2f + get_pain() / 30.0f ) );
+        } else {
+            mod_pain( -roll_remainder( 0.2f + get_pain() / 50.0f ) );
+        }
     }
 
     float rest = rest_quality();
@@ -5745,6 +5758,7 @@
     const bool npc_no_food = is_npc() && get_option<bool>( "NO_NPC_FOOD" );
     const bool foodless = debug_ls || npc_no_food;
     const bool no_thirst = has_flag( json_flag_NO_THIRST );
+    const bool vamp = has_trait( trait_VAMP_HUNGER );
     const bool mycus = has_trait( trait_M_DEPENDENT );
     const float kcal_per_time = get_bmr() / ( 12.0f * 24.0f );
     const int five_mins = ticks_between( from, to, 5_minutes );
@@ -5821,7 +5835,7 @@
     }
     // Mycus and Metabolic Rehydration makes thirst unnecessary
     // since water is not limited by intake but by absorption, we can just set thirst to zero
-    if( mycus || no_thirst ) {
+    if( mycus || vamp || no_thirst ) {
         set_thirst( 0 );
     }
 
@@ -6153,19 +6167,21 @@
 void Character::check_needs_extremes()
 {
     // Check if we've overdosed... in any deadly way.
-    if( get_stim() > 250 ) {
+    if( ( get_stim() > 250 )  && !( has_trait( trait_VAMP_SKIN ) ) ) {
         add_msg_player_or_npc( m_bad,
                                _( "You have a sudden heart attack!" ),
                                _( "<npcname> has a sudden heart attack!" ) );
         get_event_bus().send<event_type::dies_from_drug_overdose>( getID(), efftype_id() );
         set_part_hp_cur( body_part_torso, 0 );
-    } else if( get_stim() < -200 || get_painkiller() > 240 ) {
+    } else if( ( get_stim() < -200 || get_painkiller() > 240 ) && !( has_trait( trait_VAMP_SKIN ) ) ) {
         add_msg_player_or_npc( m_bad,
                                _( "Your breathing stops completely." ),
                                _( "<npcname>'s breathing stops completely." ) );
         get_event_bus().send<event_type::dies_from_drug_overdose>( getID(), efftype_id() );
         set_part_hp_cur( body_part_torso, 0 );
-    } else if( has_effect( effect_jetinjector ) && get_effect_dur( effect_jetinjector ) > 40_minutes ) {
+    } else if( ( has_effect( effect_jetinjector ) &&
+                 get_effect_dur( effect_jetinjector ) > 40_minutes ) &&
+               !( has_trait( trait_VAMP_SKIN ) ) ) {
         if( !( has_trait( trait_NOPAIN ) ) ) {
             add_msg_player_or_npc( m_bad,
                                    _( "Your heart spasms painfully and stops." ),
@@ -6176,13 +6192,14 @@
         }
         get_event_bus().send<event_type::dies_from_drug_overdose>( getID(), effect_jetinjector );
         set_part_hp_cur( body_part_torso, 0 );
-    } else if( get_effect_dur( effect_adrenaline ) > 50_minutes ) {
+    } else if( ( get_effect_dur( effect_adrenaline ) > 50_minutes ) &&
+               !( has_trait( trait_VAMP_SKIN ) ) ) {
         add_msg_player_or_npc( m_bad,
                                _( "Your heart spasms and stops." ),
                                _( "<npcname>'s heart spasms and stops." ) );
         get_event_bus().send<event_type::dies_from_drug_overdose>( getID(), effect_adrenaline );
         set_part_hp_cur( body_part_torso, 0 );
-    } else if( get_effect_int( effect_drunk ) > 4 ) {
+    } else if( ( get_effect_int( effect_drunk ) > 4 ) && !( has_trait( trait_VAMP_SKIN ) ) ) {
         add_msg_player_or_npc( m_bad,
                                _( "Your breathing slows down to a stop." ),
                                _( "<npcname>'s breathing slows down to a stop." ) );
@@ -6447,7 +6464,7 @@
 
 void Character::update_bodytemp()
 {
-    if( has_trait( trait_DEBUG_NOTEMP ) ) {
+    if( has_trait( trait_DEBUG_NOTEMP ) || has_trait( trait_VAMP_SKIN ) ) {
         set_all_parts_temp_conv( BODYTEMP_NORM );
         set_all_parts_temp_cur( BODYTEMP_NORM );
         return;
@@ -11496,7 +11513,7 @@
 int Character::heartrate_bpm() const
 {
     //Dead have no heartbeat usually and no heartbeat in omnicell
-    if( is_dead_state() || has_trait( trait_SLIMESPAWNER ) ) {
+    if( is_dead_state() || has_trait( trait_SLIMESPAWNER ) || has_trait( trait_VAMP_SKIN ) ) {
         return 0;
     }
     //This function returns heartrate in BPM basing of health, physical state, tiredness,

--- a/src/character.h
+++ b/src/character.h
@@ -111,6 +111,7 @@
 /// @note vision modes do not necessarily match json ids or flags
 enum vision_modes {
     DEBUG_NIGHTVISION,
+    VAMP_VISION,
     NV_GOGGLES,
     NIGHTVISION_1,
     NIGHTVISION_2,
@@ -256,6 +256,8 @@
     ALLERGY_WEAK,
     /// Penalty for eating human flesh (unless psycho/cannibal)
     CANNIBALISM,
+    // Vampirism (unless psycho/cannibal)
+    VAMPIRISM,
     /// Comestible has parasites
     PARASITES,
     /// Rotten (or, for saprophages, not rotten enough)

--- a/src/consumption.cpp
+++ b/src/consumption.cpp
@@ -132,6 +132,7 @@
 static const trait_id trait_THRESH_LUPINE( "THRESH_LUPINE" );
 static const trait_id trait_THRESH_PLANT( "THRESH_PLANT" );
 static const trait_id trait_THRESH_URSINE( "THRESH_URSINE" );
+static const trait_id trait_VAMP_HUNGER( "VAMP_HUNGER" );
 static const trait_id trait_VEGETARIAN( "VEGETARIAN" );
 static const trait_id trait_WATERSLEEP( "WATERSLEEP" );
 
@@ -146,6 +147,15 @@
         flag_id( "ALLERGEN_MEAT" ), flag_id( "ALLERGEN_EGG" )
     }};
 
+static const std::array<flag_id, 11> vamp_blacklist {{
+        flag_id( "ALLERGEN_VEGGY" ), flag_id( "ALLERGEN_FRUIT" ),
+        flag_id( "ALLERGEN_WHEAT" ), flag_id( "ALLERGEN_NUT" ),
+        flag_id( "ALLERGEN_MEAT" ), flag_id( "ALLERGEN_EGG" ),
+        flag_id( "ALLERGEN_JUNK" ), flag_id( "ALLERGEN_MILK" ),
+        flag_id( "ALLERGEN_HONEY" ), flag_id( "ALLERGEN_FOODSTUFF" ),
+        flag_id( "ALLERGEN_ALCOHOL" )
+    }};
+
 // TODO: Move pizza scraping here.
 static int compute_default_effective_kcal( const item &comest, const Character &you,
         const cata::flat_set<flag_id> &extra_flags = {} )
@@ -711,6 +721,13 @@
         return ret_val<edible_rating>::make_failure( INEDIBLE_MUTATION, _( "Ugh, you can't drink that!" ) );
     }
 
+    if( has_trait_flag( STATIC( json_character_flag( "VAMPIRE" ) ) ) &&
+        food.has_any_flag( vamp_blacklist ) &&
+        !food.has_flag( flag_VAMPIRISM_OK ) ) {
+        return ret_val<edible_rating>::make_failure( INEDIBLE_MUTATION,
+                _( "Bleh. This isn't blood!" ) );
+    }
+
     if( has_trait( trait_CARNIVORE ) && nutrition_for( food ) > 0 &&
         food.has_any_flag( carnivore_blacklist ) && !food.has_flag( flag_CARNIVORE_OK ) ) {
         return ret_val<edible_rating>::make_failure( INEDIBLE_MUTATION,
@@ -763,11 +780,18 @@
         }
     }
 
+    const bool food_is_human_blood = food.has_flag( flag_VAMPIRISM );
+    if( food_is_human_blood  && !has_trait_flag( STATIC( json_character_flag( "VAMPIRE" ) ) ) &&
+        !has_trait_flag( STATIC( json_character_flag( "CANNIBAL" ) ) ) ) {
+        add_consequence( _( "The thought of drinking human blood makes you feel sick." ), VAMPIRISM );
+    }
+
     const bool carnivore = has_trait( trait_CARNIVORE );
     const bool food_is_human_flesh = food.has_flag( flag_CANNIBALISM ) ||
                                      ( food.has_flag( flag_STRICT_HUMANITARIANISM ) &&
                                        !has_trait_flag( json_flag_STRICT_HUMANITARIAN ) );
-    if( food_is_human_flesh  && !has_trait_flag( STATIC( json_character_flag( "CANNIBAL" ) ) ) ) {
+    if( food_is_human_flesh  && !has_trait_flag( STATIC( json_character_flag( "CANNIBAL" ) ) ) &&
+        !food.has_flag( flag_VAMPIRISM ) ) {
         add_consequence( _( "The thought of eating human flesh makes you feel sick." ), CANNIBALISM );
     }
 
@@ -1136,10 +1160,54 @@
         }
     }
 
+    const bool food_is_human_blood = food.has_flag( flag_VAMPIRISM );
+    if( food_is_human_blood ) {
+        // Sapiovores don't recognize humans as the same species.
+        // But let them possibly feel cool about eating sapient stuff - treat like psycho
+        // However, spiritual sapiovores should still recognize humans as having a soul or special for religious reasons
+        const bool vamp = has_trait( trait_VAMP_HUNGER );
+        const bool cannibal = has_trait( trait_CANNIBAL );
+        const bool psycho = has_trait( trait_PSYCHOPATH );
+        const bool sapiovore = has_trait( trait_SAPIOVORE );
+        const bool spiritual = has_trait( trait_SPIRITUAL );
+        if( vamp ) {
+            add_msg_if_player( m_good, _( "You relish drinking the human blood." ) );
+            add_morale( MORALE_CANNIBAL, 30, 200 );
+        } else if( ( cannibal || sapiovore ) && psycho && spiritual ) {
+            add_msg_if_player( m_good,
+                               _( "You drink the human blood, and in doing so, devour their spirit." ) );
+            // You're not really consuming anything special; you just think you are.
+            add_morale( MORALE_CANNIBAL, 25, 300 );
+        } else if( cannibal && psycho ) {
+            add_msg_if_player( m_good, _( "You drink the human blood." ) );
+            add_morale( MORALE_CANNIBAL, 15, 200 );
+        } else if( ( cannibal || sapiovore ) && spiritual ) {
+            add_msg_if_player( m_good, _( "You consume the sacred human blood." ) );
+            // Boosted because you understand the philosophical implications of your actions, and YOU LIKE THEM.
+            add_morale( MORALE_CANNIBAL, 15, 200 );
+        } else if( cannibal ) {
+            add_msg_if_player( m_good, _( "You indulge your shameful hunger." ) );
+            add_morale( MORALE_CANNIBAL, 10, 50 );
+        } else if( ( psycho || sapiovore ) && spiritual ) {
+            add_msg_if_player( _( "You greedily devour the taboo liquid." ) );
+            // Small bonus for violating a taboo.
+            add_morale( MORALE_CANNIBAL, 5, 50 );
+        } else if( psycho || sapiovore ) {
+            add_msg_if_player( _( "Meh.  You've eaten worse." ) );
+        } else if( spiritual ) {
+            add_msg_if_player( m_bad,
+                               _( "This is probably going to count against you if there's still an afterlife." ) );
+            add_morale( MORALE_CANNIBAL, -60, -400, 60_minutes, 30_minutes );
+        } else {
+            add_msg_if_player( m_bad, _( "You feel horrible for eating a person." ) );
+            add_morale( MORALE_CANNIBAL, -60, -400, 60_minutes, 30_minutes );
+        }
+    }
+
     const bool food_is_human_flesh = food.has_flag( flag_CANNIBALISM ) ||
                                      ( food.has_flag( flag_STRICT_HUMANITARIANISM ) &&
                                        !has_trait_flag( json_flag_STRICT_HUMANITARIAN ) );
-    if( food_is_human_flesh ) {
+    if( food_is_human_flesh && !food_is_human_blood ) {
         // Sapiovores don't recognize humans as the same species.
         // But let them possibly feel cool about eating sapient stuff - treat like psycho
         // However, spiritual sapiovores should still recognize humans as having a soul or special for religious reasons
@@ -1214,6 +1282,11 @@
             add_msg_if_player( m_bad, _( "Yuck!  How can anybody eat this stuff?" ) );
             add_morale( allergy, -75, -400, 30_minutes, 24_minutes );
         }
+        if( allergy != MORALE_NULL && has_trait_flag( STATIC( json_character_flag( "VAMPIRE" ) ) ) ) {
+            add_msg_if_player( m_bad, _( "I can't stomach anything but blood!" ) );
+            add_morale( allergy, -75, -400, 30_minutes, 24_minutes );
+            vomit();
+        }
         if( food.has_flag( flag_ALLERGEN_JUNK ) ) {
             if( has_trait( trait_PROJUNK ) ) {
                 add_msg_if_player( m_good, _( "Mmm, junk food." ) );

--- a/src/flag.cpp
+++ b/src/flag.cpp
@@ -13,8 +13,11 @@
 const flag_id flag_ACT_IN_FIRE( "ACT_IN_FIRE" );
 const flag_id flag_ACT_ON_RANGED_HIT( "ACT_ON_RANGED_HIT" );
 const flag_id flag_ALARMCLOCK( "ALARMCLOCK" );
+const flag_id flag_ALLERGEN_ALCOHOL( "ALLERGEN_ALCOHOL" );
 const flag_id flag_ALLERGEN_EGG( "ALLERGEN_EGG" );
+const flag_id flag_ALLERGEN_FOODSTUFF( "ALLERGEN_FOODSTUFF" );
 const flag_id flag_ALLERGEN_FRUIT( "ALLERGEN_FRUIT" );
+const flag_id flag_ALLERGEN_HONEY( "ALLERGEN_HONEY" );
 const flag_id flag_ALLERGEN_JUNK( "ALLERGEN_JUNK" );
 const flag_id flag_ALLERGEN_MEAT( "ALLERGEN_MEAT" );
 const flag_id flag_ALLERGEN_MILK( "ALLERGEN_MILK" );
@@ -303,6 +306,8 @@
 const flag_id flag_USE_EAT_VERB( "USE_EAT_VERB" );
 const flag_id flag_USE_PLAYER_ENERGY( "USE_PLAYER_ENERGY" );
 const flag_id flag_USE_UPS( "USE_UPS" );
+const flag_id flag_VAMPIRISM( "VAMPIRISM" );
+const flag_id flag_VAMPIRISM_OK( "VAMPIRISM_OK" );
 const flag_id flag_VARSIZE( "VARSIZE" );
 const flag_id flag_VEHICLE( "VEHICLE" );
 const flag_id flag_WAIST( "WAIST" );

--- a/src/flag.h
+++ b/src/flag.h
@@ -20,8 +20,11 @@
 extern const flag_id flag_ACT_IN_FIRE;
 extern const flag_id flag_ACT_ON_RANGED_HIT;
 extern const flag_id flag_ALARMCLOCK;
+extern const flag_id flag_ALLERGEN_ALCOHOL;
 extern const flag_id flag_ALLERGEN_EGG;
+extern const flag_id flag_ALLERGEN_FOODSTUFF;
 extern const flag_id flag_ALLERGEN_FRUIT;
+extern const flag_id flag_ALLERGEN_HONEY;
 extern const flag_id flag_ALLERGEN_JUNK;
 extern const flag_id flag_ALLERGEN_MEAT;
 extern const flag_id flag_ALLERGEN_MILK;
@@ -310,6 +313,8 @@
 extern const flag_id flag_USE_EAT_VERB;
 extern const flag_id flag_USE_PLAYER_ENERGY;
 extern const flag_id flag_USE_UPS;
+extern const flag_id flag_VAMPIRISM;
+extern const flag_id flag_VAMPIRISM_OK;
 extern const flag_id flag_VARSIZE;
 extern const flag_id flag_VEHICLE;
 extern const flag_id flag_WAIST;

--- a/src/game.cpp
+++ b/src/game.cpp
@@ -1039,8 +1039,9 @@
         int iInfoLine = 0;
 
         if( u.has_amount( itype_holybook_bible1, 1 ) || u.has_amount( itype_holybook_bible2, 1 ) ||
-            u.has_amount( itype_holybook_bible3, 1 ) ) {
-            if( !( u.has_trait( trait_id( "CANNIBAL" ) ) || u.has_trait( trait_id( "PSYCHOPATH" ) ) ) ) {
+            u.has_amount( itype_holybook_bible3, 1 )  || u.has_trait( trait_id( "THRESH_VAMP" ) ) ) {
+            if( !( u.has_trait( trait_id( "CANNIBAL" ) ) || u.has_trait( trait_id( "PSYCHOPATH" ) ) ||
+                   u.has_trait( trait_id( "THRESH_VAMP" ) ) ) ) {
                 vRip.emplace_back( "               _______  ___" );
                 vRip.emplace_back( "              <       `/   |" );
                 vRip.emplace_back( "               >  _     _ (" );

--- a/src/item.cpp
+++ b/src/item.cpp
@@ -155,6 +155,7 @@
 
 static const json_character_flag json_flag_CANNIBAL( "CANNIBAL" );
 static const json_character_flag json_flag_IMMUNE_SPOIL( "IMMUNE_SPOIL" );
+static const json_character_flag json_flag_VAMPIRE( "VAMPIRE" );
 
 static const bionic_id bio_digestion( "bio_digestion" );
 
@@ -1967,19 +1967,35 @@
         info.emplace_back( "DESCRIPTION",
                            _( "* This food will cause an <bad>allergic reaction</bad>." ) );
     }
+    if( food_item->has_flag( flag_VAMPIRISM ) &&
+        parts->test( iteminfo_parts::FOOD_VAMPIRISM ) ) {
+        if( player_character.has_trait_flag( json_flag_VAMPIRE ) ) {
+            info.emplace_back( "DESCRIPTION",
+                               _( "* This food contains <good>human blood</good>." ) );
+        } else if( player_character.has_trait_flag( json_flag_CANNIBAL ) ) {
+            info.emplace_back( "DESCRIPTION",
+                               _( "* This food contains <good>human flesh</good>." ) );
+        } else {
+            info.emplace_back( "DESCRIPTION",
+                               _( "* This food contains <bad>human flesh</bad>." ) );
+        }
+    }
 
     if( food_item->has_flag( flag_CANNIBALISM ) &&
+        !food_item->has_flag( flag_VAMPIRISM ) &&
         parts->test( iteminfo_parts::FOOD_CANNIBALISM ) ) {
-        if( !player_character.has_trait_flag( json_flag_CANNIBAL ) ) {
+        if( player_character.has_trait_flag( json_flag_CANNIBAL ) &&
+            !player_character.has_trait_flag( json_flag_VAMPIRE ) ) {
             info.emplace_back( "DESCRIPTION",
-                               _( "* This food contains <bad>human flesh</bad>." ) );
+                               _( "* This food contains <good>human flesh</good>." ) );
         } else {
             info.emplace_back( "DESCRIPTION",
-                               _( "* This food contains <good>human flesh</good>." ) );
+                               _( "* This food contains <bad>human flesh</bad>." ) );
         }
     }
 
-    if( food_item->is_tainted() && parts->test( iteminfo_parts::FOOD_CANNIBALISM ) ) {
+    if( food_item->is_tainted() && ( parts->test( iteminfo_parts::FOOD_CANNIBALISM ) ||
+                                     parts->test( iteminfo_parts::FOOD_VAMPIRISM ) ) ) {
         info.emplace_back( "DESCRIPTION",
                            _( "* This food is <bad>tainted</bad> and will poison you." ) );
     }
@@ -4374,6 +4390,7 @@
             case ALLERGY:
             case ALLERGY_WEAK:
             case CANNIBALISM:
+            case VAMPIRISM:
             case PARASITES:
                 ret = c_red;
                 break;

--- a/src/item_factory.cpp
+++ b/src/item_factory.cpp
@@ -2505,6 +2505,7 @@
         // First allergens:
         // An item is an allergen even if it has trace amounts of allergenic material
         { material_id( "hflesh" ), flag_CANNIBALISM },
+        { material_id( "blood" ), flag_VAMPIRISM },
 
         { material_id( "hflesh" ), flag_ALLERGEN_MEAT },
         { material_id( "iflesh" ), flag_ALLERGEN_MEAT },
@@ -2519,10 +2520,15 @@
         { material_id( "mushroom" ), flag_ALLERGEN_VEGGY },
         { material_id( "milk" ), flag_ALLERGEN_MILK },
         { material_id( "egg" ), flag_ALLERGEN_EGG },
+        { material_id( "alcohol" ), flag_ALLERGEN_ALCOHOL },
+        { material_id( "foodstuff" ), flag_ALLERGEN_FOODSTUFF },
+        { material_id( "honey" ), flag_ALLERGEN_HONEY },
         { material_id( "junk" ), flag_ALLERGEN_JUNK },
         // Not food, but we can keep it here
         { material_id( "wool" ), flag_ALLERGEN_WOOL },
         // Now "made of". Those flags should not be passed
+        { material_id( "blood" ), flag_VAMPIRISM_OK },
+        { material_id( "blood" ), flag_CARNIVORE_OK },
         { material_id( "flesh" ), flag_CARNIVORE_OK },
         { material_id( "hflesh" ), flag_CARNIVORE_OK },
         { material_id( "iflesh" ), flag_CARNIVORE_OK },

--- a/src/iteminfo_query.h
+++ b/src/iteminfo_query.h
@@ -41,6 +41,7 @@
     FOOD_VITAMINS,
     FOOD_VIT_EFFECTS,
     FOOD_CANNIBALISM,
+    FOOD_VAMPIRISM,
     FOOD_TAINT,
     FOOD_POISON,
     FOOD_ALLERGEN,

--- a/src/iuse.cpp
+++ b/src/iuse.cpp
@@ -342,6 +342,7 @@
 static const trait_id trait_THRESH_PLANT( "THRESH_PLANT" );
 static const trait_id trait_TOLERANCE( "TOLERANCE" );
 static const trait_id trait_URSINE_EYE( "URSINE_EYE" );
+static const trait_id trait_VAMP_SKIN( "VAMP_SKIN" );
 static const trait_id trait_WAYFARER( "WAYFARER" );
 
 static const quality_id qual_AXE( "AXE" );
@@ -4547,6 +4549,9 @@
     if( p->has_trait( trait_ILLITERATE ) ) {
         p->add_msg_if_player( m_info, _( "You don't know what you're looking at." ) );
         return cata::nullopt;
+    } else if( p->has_trait( trait_VAMP_SKIN ) ) {
+        p->add_msg_if_player( _( "Your %s shows warning:  'No heartbeat detected.  "
+                                 "This device must be worn to provide fitness feedback.'" ), it->tname() );
     } else {
         //What else should block using f-band?
         const int bpm = p->heartrate_bpm();

--- a/src/map_field.cpp
+++ b/src/map_field.cpp
@@ -92,6 +92,7 @@
 static const trait_id trait_M_SKIN3( "M_SKIN3" );
 static const trait_id trait_THRESH_MARLOSS( "THRESH_MARLOSS" );
 static const trait_id trait_THRESH_MYCUS( "THRESH_MYCUS" );
+static const trait_id trait_VAMP_SKIN( "VAMP_SKIN" );
 
 using namespace map_field_processing;
 
@@ -1558,7 +1559,8 @@
             if( ( cur.get_field_intensity() > 1 || !one_in( 3 ) ) && ( !inside || one_in( 3 ) ) ) {
                 u.add_env_effect( effect_teargas, bodypart_id( "mouth" ), 5, 20_seconds );
             }
-            if( cur.get_field_intensity() > 1 && ( !inside || one_in( 3 ) ) ) {
+            if( !( u.has_trait( trait_VAMP_SKIN ) ) && cur.get_field_intensity() > 1 && ( !inside ||
+                    one_in( 3 ) ) ) {
                 u.add_env_effect( effect_blind, bodypart_id( "eyes" ), cur.get_field_intensity() * 2, 10_seconds );
             }
         }
@@ -1685,7 +1687,8 @@
             // The gas won't harm you inside a vehicle.
             if( !inside ) {
                 // Full body suits protect you from the effects of the gas.
-                if( !( u.worn_with_flag( STATIC( flag_id( "GAS_PROOF" ) ) ) &&
+                if( !( u.has_trait( trait_VAMP_SKIN ) ) &&
+                    !( u.worn_with_flag( STATIC( flag_id( "GAS_PROOF" ) ) ) &&
                        u.get_env_resist( bodypart_id( "mouth" ) ) >= 15 &&
                        u.get_env_resist( bodypart_id( "eyes" ) ) >= 15 ) ) {
                     const int intensity = cur.get_field_intensity();

--- a/src/memorial_logger.cpp
+++ b/src/memorial_logger.cpp
@@ -90,6 +90,7 @@
 static const trait_id trait_CANNIBAL( "CANNIBAL" );
 static const trait_id trait_PSYCHOPATH( "PSYCHOPATH" );
 static const trait_id trait_SAPIOVORE( "SAPIOVORE" );
+static const trait_id trait_THRESH_VAMP( "THRESH_VAMP" );
 
 memorial_log_entry::memorial_log_entry( const std::string &preformatted_msg ) :
     preformatted_( preformatted_msg )
@@ -590,6 +591,7 @@
             character_id ch = e.get<character_id>( "killer" );
             if( ch == avatar_id ) {
                 std::string name = e.get<cata_variant_type::string>( "victim_name" );
+                bool vampire = player_character.has_trait( trait_THRESH_VAMP );
                 bool cannibal = player_character.has_trait( trait_CANNIBAL );
                 bool psycho = player_character.has_trait( trait_PSYCHOPATH );
                 if( player_character.has_trait( trait_SAPIOVORE ) ) {
@@ -613,6 +615,10 @@
                     add( pgettext( "memorial_male", "Killed an innocent, %s." ),
                          pgettext( "memorial_female", "Killed an innocent, %s." ),
                          name );
+                } else if( vampire ) {
+                    add( pgettext( "memorial_male", "Killed an innocent human, %s." ),
+                         pgettext( "memorial_female", "Killed an innocent human, %s." ),
+                         name );
                 } else {
                     add( pgettext( "memorial_male",
                                    "Killed an innocent person, %s, in cold blood and "

--- a/src/morale_types.cpp
+++ b/src/morale_types.cpp
@@ -40,6 +40,7 @@
 
             morale_type( "morale_food_bad" ),
             morale_type( "morale_cannibal" ),
+            morale_type( "morale_vampire" ),
             morale_type( "morale_vegetarian" ),
             morale_type( "morale_meatarian" ),
             morale_type( "morale_antifruit" ),
@@ -138,6 +139,7 @@
 const morale_type MORALE_CRAVING_MARLOSS( "morale_craving_marloss" );
 const morale_type MORALE_FOOD_BAD( "morale_food_bad" );
 const morale_type MORALE_CANNIBAL( "morale_cannibal" );
+const morale_type MORALE_VAMPIRE( "morale_vampire" );
 const morale_type MORALE_VEGETARIAN( "morale_vegetarian" );
 const morale_type MORALE_MEATARIAN( "morale_meatarian" );
 const morale_type MORALE_ANTIFRUIT( "morale_antifruit" );

--- a/src/morale_types.h
+++ b/src/morale_types.h
@@ -62,6 +62,7 @@
 extern const morale_type MORALE_CRAVING_MARLOSS;
 extern const morale_type MORALE_FOOD_BAD;
 extern const morale_type MORALE_CANNIBAL;
+extern const morale_type MORALE_VAMPIRE;
 extern const morale_type MORALE_VEGETARIAN;
 extern const morale_type MORALE_MEATARIAN;
 extern const morale_type MORALE_ANTIFRUIT;

--- a/src/mutation.cpp
+++ b/src/mutation.cpp
@@ -67,6 +67,7 @@
 static const trait_id trait_STR_ALPHA( "STR_ALPHA" );
 static const trait_id trait_THRESH_MARLOSS( "THRESH_MARLOSS" );
 static const trait_id trait_THRESH_MYCUS( "THRESH_MYCUS" );
+static const trait_id trait_VAMP_SKIN( "VAMP_SKIN" );
 static const trait_id trait_TREE_COMMUNION( "TREE_COMMUNION" );
 static const trait_id trait_VOMITOUS( "VOMITOUS" );
 static const trait_id trait_WEB_WEAVER( "WEB_WEAVER" );
@@ -877,6 +878,10 @@
 {
     bool force_bad = one_in( 3 );
     bool force_good = false;
+    if( has_trait( trait_VAMP_SKIN ) ) {
+        add_msg_if_player( m_good, _( "Your Vampire blood quickly destroys the mutagenic contagion." ) );
+        return;
+    }
     if( has_trait( trait_ROBUST ) && force_bad ) {
         // Robust Genetics gives you a 33% chance for a good mutation,
         // instead of the 33% chance of a bad one.

--- a/src/npc.cpp
+++ b/src/npc.cpp
@@ -124,6 +124,7 @@
 static const trait_id trait_SAPIOVORE( "SAPIOVORE" );
 static const trait_id trait_SCHIZOPHRENIC( "SCHIZOPHRENIC" );
 static const trait_id trait_TERRIFYING( "TERRIFYING" );
+static const trait_id trait_THRESH_VAMP( "THRESH_VAMP" );
 
 class monfaction;
 
@@ -2600,12 +2601,15 @@
 
     Character &player_character = get_player_character();
     if( killer == &player_character && ( !guaranteed_hostile() || hit_by_player ) ) {
+        bool vampire = player_character.has_trait( trait_THRESH_VAMP );
         bool cannibal = player_character.has_trait( trait_CANNIBAL );
         bool psycho = player_character.has_trait( trait_PSYCHOPATH );
         if( player_character.has_trait( trait_SAPIOVORE ) || psycho ) {
             // No morale effect
         } else if( cannibal ) {
             player_character.add_morale( MORALE_KILLED_INNOCENT, -5, 0, 2_days, 3_hours );
+        } else if( vampire ) {
+            player_character.add_morale( MORALE_KILLED_INNOCENT, -5, 0, 2_days, 3_hours );
         } else {
             player_character.add_morale( MORALE_KILLED_INNOCENT, -100, 0, 2_days, 3_hours );
         }

--- a/src/player_hardcoded_effects.cpp
+++ b/src/player_hardcoded_effects.cpp
@@ -115,6 +115,8 @@
 static const trait_id trait_SEESLEEP( "SEESLEEP" );
 static const trait_id trait_SCHIZOPHRENIC( "SCHIZOPHRENIC" );
 static const trait_id trait_THRESH_MYCUS( "THRESH_MYCUS" );
+static const trait_id trait_THRESH_VAMP( "THRESH_VAMP" );
+static const trait_id trait_VAMP_SKIN( "VAMP_SKIN" );
 static const trait_id trait_WATERSLEEP( "WATERSLEEP" );
 
 static const json_character_flag json_flag_ALARMCLOCK( "ALARMCLOCK" );
@@ -882,7 +884,9 @@
         }
 
         if( dur > 1800_minutes && one_in( 300 * 512 ) ) {
-            if( !has_trait( trait_NOPAIN ) ) {
+            if( has_trait( trait_VAMP_SKIN ) ) {
+                return;
+            } else if( !has_trait( trait_NOPAIN ) ) {
                 add_msg_if_player( m_bad,
                                    _( "Your heart spasms painfully and stops, dragging you back to reality as you die." ) );
             } else {
@@ -1337,6 +1341,9 @@
         // Determine the strength of effects or dreams based upon category strength
         int strength = 0; // Category too weak for any effect or dream
         if( crossed_threshold() ) {
+            if( has_trait( trait_THRESH_VAMP ) ) {
+                highcat = mutation_category_id( "VAMP" );
+            }
             strength = 4; // Post-human.
         } else if( highest >= 20 && highest < 35 ) {
             strength = 1; // Low strength

--- a/src/suffer.cpp
+++ b/src/suffer.cpp
@@ -151,6 +151,8 @@
 static const trait_id trait_TROGLO2( "TROGLO2" );
 static const trait_id trait_TROGLO3( "TROGLO3" );
 static const trait_id trait_UNSTABLE( "UNSTABLE" );
+static const trait_id trait_VAMP_CURSE( "VAMP_CURSE" );
+static const trait_id trait_VAMP_SKIN( "VAMP_SKIN" );
 static const trait_id trait_VOMITOUS( "VOMITOUS" );
 static const trait_id trait_WEB_SPINNER( "WEB_SPINNER" );
 static const trait_id trait_WEB_WEAVER( "WEB_WEAVER" );
@@ -243,7 +245,8 @@
 
 void Character::suffer_while_underwater()
 {
-    if( !has_trait( trait_GILLS ) && !has_trait( trait_GILLS_CEPH ) ) {
+    if( !has_trait( trait_GILLS ) && !has_trait( trait_GILLS_CEPH ) &&
+        !has_trait( trait_VAMP_SKIN ) ) {
         oxygen--;
     }
     if( oxygen < 12 && worn_with_flag( flag_REBREATHER ) ) {
@@ -746,7 +749,8 @@
         return;
     }
 
-    if( has_trait( trait_ALBINO ) || has_effect( effect_datura ) || has_trait( trait_SUNBURN ) ) {
+    if( has_trait( trait_ALBINO ) || has_effect( effect_datura ) || has_trait( trait_SUNBURN ) ||
+        has_trait( trait_VAMP_CURSE ) ) {
         suffer_from_sunburn();
     }
 
@@ -772,6 +776,13 @@
         mod_int_bonus( -4 );
         mod_per_bonus( -4 );
     }
+    if( has_trait( trait_VAMP_CURSE ) ) {
+        mod_str_bonus( -4 );
+        mod_dex_bonus( -4 );
+        add_miss_reason( _( "You can't tolerate the sunlight!" ), 4 );
+        mod_int_bonus( -4 );
+        mod_per_bonus( -4 );
+    }
 }
 
 std::map<bodypart_id, float> Character::bodypart_exposure()
@@ -803,7 +814,8 @@
 
 void Character::suffer_from_sunburn()
 {
-    if( !has_trait( trait_ALBINO ) && !has_effect( effect_datura ) && !has_trait( trait_SUNBURN ) ) {
+    if( !has_trait( trait_ALBINO ) && !has_effect( effect_datura ) && !has_trait( trait_SUNBURN ) &&
+        !has_trait( trait_VAMP_CURSE ) ) {
         return;
     }
 
@@ -820,6 +832,12 @@
             return;
         }
         sunlight_effect = _( "The sunlight burns!" );
+    } else if( has_trait( trait_VAMP_CURSE ) ) {
+        // Sunburn effects occur about 10 times per minute
+        if( !one_turn_in( 6_seconds ) ) {
+            return;
+        }
+        sunlight_effect = _( "The sunlight sears" );
     }
 
     // Sunglasses can keep the sun off the eyes.
@@ -897,7 +915,7 @@
     }
 
     // Solar Sensitivity (SUNBURN) trait causes injury to exposed parts
-    if( has_trait( trait_SUNBURN ) ) {
+    if( has_trait( trait_SUNBURN ) || has_trait( trait_VAMP_CURSE ) ) {
         mod_pain( 1 );
         // Check exposure of all body parts
         for( const std::pair<const bodypart_id, float> &bp_exp : bp_exposure ) {

--- a/data/json/field_type.json
+++ b/data/json/field_type.json
@@ -354,7 +354,7 @@
     "has_fume": true,
     "percent_spread": 90,
     "dirty_transparency_cache": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ] }
+    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ], "traits": [ "VAMP_SKIN" ] }
   },
   {
     "id": "fd_rubble",
@@ -429,7 +429,7 @@
     "dirty_transparency_cache": true,
     "percent_spread": 10,
     "outdoor_age_speedup": "0 turns",
-    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 7 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 7 ] ], "traits": [ "VAMP_SKIN" ] },
     "priority": 8,
     "half_life": "2 minutes",
     "phase": "gas",
@@ -515,7 +515,7 @@
     "outdoor_age_speedup": "3 minutes",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ], "traits": [ "VAMP_SKIN" ] },
     "priority": 8,
     "half_life": "10 minutes",
     "phase": "gas",
@@ -544,7 +544,7 @@
     "outdoor_age_speedup": "0 turns",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ], "traits": [ "VAMP_SKIN" ] },
     "priority": 8,
     "half_life": "5 minutes",
     "phase": "gas",
@@ -590,7 +590,7 @@
     "wandering_field": "fd_toxic_gas",
     "gas_absorption_factor": 15,
     "dirty_transparency_cache": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ], "traits": [ "VAMP_SKIN" ] },
     "phase": "gas",
     "display_items": false,
     "display_field": true,
@@ -1138,7 +1138,7 @@
     "outdoor_age_speedup": "5 minutes",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ], "traits": [ "VAMP_SKIN" ] },
     "priority": 8,
     "half_life": "50 minutes",
     "phase": "gas",
@@ -1160,7 +1160,7 @@
     "outdoor_age_speedup": "1 minutes",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ], "traits": [ "VAMP_SKIN" ] },
     "priority": 8,
     "half_life": "15 minutes",
     "phase": "gas",
@@ -1407,7 +1407,7 @@
     "outdoor_age_speedup": "3 minutes",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ], "traits": [ "VAMP_SKIN" ] },
     "priority": 8,
     "half_life": "10 minutes",
     "phase": "gas"
@@ -1427,7 +1427,7 @@
     "outdoor_age_speedup": "1 minutes",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ], "traits": [ "VAMP_SKIN" ] },
     "priority": 8,
     "half_life": "30 minutes",
     "phase": "gas",
@@ -1449,7 +1449,7 @@
     "outdoor_age_speedup": "1 minutes",
     "dirty_transparency_cache": true,
     "has_fume": true,
-    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ] },
+    "immunity_data": { "body_part_env_resistance": [ [ "mouth", 15 ] ], "traits": [ "VAMP_SKIN" ] },
     "priority": 8,
     "half_life": "30 minutes",
     "phase": "gas",

--- a/data/json/flags.json
+++ b/data/json/flags.json
@@ -1120,6 +1120,21 @@
     "context": [ "COMESTIBLE" ]
   },
   {
+    "id": "ALLERGEN_HONEY",
+    "type": "json_flag",
+    "context": [ "COMESTIBLE" ]
+  },
+  {
+    "id": "ALLERGEN_ALCOHOL",
+    "type": "json_flag",
+    "context": [ "COMESTIBLE" ]
+  },
+  {
+    "id": "ALLERGEN_FOODSTUFF",
+    "type": "json_flag",
+    "context": [ "COMESTIBLE" ]
+  },
+  {
     "id": "ALLERGEN_JUNK",
     "type": "json_flag",
     "context": [ "COMESTIBLE" ]
@@ -1199,6 +1214,16 @@
     "type": "json_flag",
     "context": [  ]
   },
+  {
+    "id": "VAMPIRISM",
+    "type": "json_flag",
+    "context": [  ]
+  },
+  {
+    "id": "VAMPIRISM_OK",
+    "type": "json_flag",
+    "context": [  ]
+  },
   {
     "id": "CASING",
     "type": "json_flag",

--- a/data/json/morale_types.json
+++ b/data/json/morale_types.json
@@ -130,6 +130,11 @@
     "text": "Ate Demihuman Flesh"
   },
   {
+    "id": "morale_vampire",
+    "type": "morale_type",
+    "text": "Drank Human Blood"
+  },
+  {
     "id": "morale_vegetarian",
     "type": "morale_type",
     "text": "Ate Vegetables"

--- a/data/json/mutations/mutation_ordering.json
+++ b/data/json/mutations/mutation_ordering.json
@@ -75,6 +75,7 @@
           "TROGLO2",
           "TROGLO3",
           "URSINE_FUR",
+          "VAMP_SKIN",
           "VISCOUS"
         ],
         "order": 1500
@@ -182,7 +183,7 @@
       { "id": [ "FLOWERS" ], "order": 5000 },
       { "id": [ "ELFA_EARS", "FELINE_EARS", "LUPINE_EARS", "URSINE_EARS" ], "order": 5500 },
       { "id": [ "ANTENNAE", "ANTLERS", "CURVED_HORNS", "HORNS", "POINTED_HORNS" ], "order": 6000 },
-      { "id": [ "COMPOUND_EYES", "ELFAEYES", "FEL_EYE", "LIZ_EYE" ], "order": 6500 },
+      { "id": [ "COMPOUND_EYES", "ELFAEYES", "FEL_EYE", "LIZ_EYE", "VAMP_EYES" ], "order": 6500 },
       {
         "id": [
           "BEAK",