Gun-shy

data/json/mutations/mutations.json

@@ -9988,7 +9988,18 @@
     "points": -4,
     "description": "Whether from personal choice or childhood trauma, using ranged weapons is off-limits to you, even if your life depended on it.",
     "starting_trait": true,
+    "valid": false,
+    "cancels": [ "GUNSHY" ]
+  },
+  {
+    "type": "mutation",
+    "id": "GUNSHY",
+    "name": { "str": "Gun-Shy" },
+    "points": -3,
+    "description": "Using a firearm is off limits, due to personal philosophy or a traumatic event. You can still use bows and slings.",
+    "starting_trait": true,
     "valid": false
+    "cancels": [ "BRAWLER" ]
   },
   {
     "type": "mutation",

src/handle_action.cpp

@@ -150,6 +150,7 @@ static const quality_id qual_CUT( "CUT" );
 static const skill_id skill_melee( "melee" );
 
 static const trait_id trait_BRAWLER( "BRAWLER" );
+static const trait_id trait_GUNSHY( "GUNSHY" );
 static const trait_id trait_HIBERNATE( "HIBERNATE" );
 static const trait_id trait_PROF_CHURL( "PROF_CHURL" );
 static const trait_id trait_SHELL2( "SHELL2" );
@@ -1696,6 +1697,10 @@ static void fire()
         add_msg( m_bad, _( "You refuse to use ranged weapons." ) );
         return;
     }
+    if( you.has_trait( trait_GUNSHY ) && weapon->is_firearm() ) {
+        add_msg( m_bad, _( "You refuse to use firearms." ) );
+        return;
+    }
     // try firing gun
     if( weapon && weapon->is_gun() && !weapon->gun_current_mode().melee() ) {
         avatar_action::fire_wielded_weapon( you );

src/ranged.cpp

@@ -171,6 +171,7 @@ static const skill_id skill_swimming( "swimming" );
 static const skill_id skill_throw( "throw" );
 
 static const trait_id trait_BRAWLER( "BRAWLER" );
+static const trait_id trait_GUNSHY( "GUNSHY" );
 static const trait_id trait_PYROMANIA( "PYROMANIA" );
 
 static const trap_str_id tr_practice_target( "tr_practice_target" );
@@ -4178,6 +4179,12 @@ bool gunmode_checks_common( avatar &you, const map &m, std::vector<std::string>
         result = false;
     }
 
+    if( you.has_trait( trait_GUNSHY ) ) {
+        messages.push_back( string_format( _( "You're too gun-shy to use this." ),
+                                           gmode->tname() ) );
+        result = false;
+    }
+
     // Check that passed gun mode is valid and we are able to use it
     if( !( gmode && you.can_use( *gmode ) ) ) {
         messages.push_back( string_format( _( "You can't currently fire your %s." ),

src/turret.cpp

@@ -33,6 +33,8 @@ static const skill_id skill_gun( "gun" );
 
 static const trait_id trait_BRAWLER( "BRAWLER" );
 
+static const trait_id trait_GUNSHY( "GUNSHY" );
+
 std::vector<vehicle_part *> vehicle::turrets()
 {
     std::vector<vehicle_part *> res;
@@ -415,6 +417,11 @@ bool vehicle::turrets_aim( std::vector<vehicle_part *> &turrets )
             _( "Pfft.  You are a brawler; using turrets is beneath you." ) );
         return false;
     }
+    if( player_character.has_trait( trait_GUNSHY ) ) {
+        player_character.add_msg_if_player(
+            _( "Firing a gun isn't any better, even if it's mounted." ) );
+        return false;
+    }
 
     // Get target
     target_handler::trajectory trajectory = target_handler::mode_turrets( player_character, *this,