Allow mutations to prevent installing CBMs

Bionics can currently cancel mutations when installed, but can't have
mutations prevent installation.

doc/JSON_INFO.md

@@ -655,6 +655,7 @@ For information about tools with option to export ASCII art in format ready to b
 | weight_capacity_bonus       | (_optional_) Bonus to weight carrying capacity in grams, can be negative.  Strings can be used - "5000 g" or "5 kg" (default: `0`)
 | weight_capacity_modifier    | (_optional_) Factor modifying base weight carrying capacity. (default: `1`)
 | canceled_mutations          | (_optional_) A list of mutations/traits that are removed when this bionic is installed (e.g. because it replaces the fault biological part).
+| mutation_conflicts          | (_optional_) A list of mutations that prevent this bionic from being installed.
 | included_bionics            | (_optional_) Additional bionics that are installed automatically when this bionic is installed. This can be used to install several bionics from one CBM item, which is useful as each of those can be activated independently.
 | included                    | (_optional_) Whether this bionic is included with another. If true this bionic does not require a CBM item to be defined. (default: `false`)
 | env_protec                  | (_optional_) How much environmental protection does this bionic provide on the specified body parts.
@@ -692,6 +693,7 @@ For information about tools with option to export ASCII art in format ready to b
     "encumbrance"  : [ [ "torso", 10 ], [ "arm_l", 10 ], [ "arm_r", 10 ], [ "leg_l", 10 ], [ "leg_r", 10 ], [ "foot_l", 10 ], [ "foot_r", 10 ] ],
     "description"  : "You have a battery draining attachment, and thus can make use of the energy contained in normal, everyday batteries. Use 'E' to consume batteries.",
     "canceled_mutations": ["HYPEROPIC"],
+    "mutation_conflicts": [ "HUGE" ],
     "installation_requirement": "sewing_standard",
     "included_bionics": ["bio_blindfold"]
 },

src/bionics.cpp

@@ -318,6 +318,7 @@ void bionic_data::load( const JsonObject &jsobj, const std::string & )
     optional( jsobj, was_loaded, "learned_spells", learned_spells );
     optional( jsobj, was_loaded, "learned_proficiencies", proficiencies );
     optional( jsobj, was_loaded, "canceled_mutations", canceled_mutations );
+    optional( jsobj, was_loaded, "mutation_conflicts", mutation_conflicts );
     optional( jsobj, was_loaded, "included_bionics", included_bionics );
     optional( jsobj, was_loaded, "included", included );
     optional( jsobj, was_loaded, "upgraded_bionic", upgraded_bionic );
@@ -2324,6 +2325,10 @@ ret_val<bool> Character::is_installable( const item_location &loc, const bool by
     const itype *itemtype = it->type;
     const bionic_id &bid = itemtype->bionic->id;
 
+    const auto has_trait_lambda = [this]( const trait_id & candidate ) {
+        return has_trait( candidate );
+    };
+
     if( it->has_flag( flag_FILTHY ) ) {
         // NOLINTNEXTLINE(cata-text-style): single space after the period for symmetry
         const std::string msg = by_autodoc ? _( "/!\\ CBM is highly contaminated. /!\\" ) :
@@ -2341,6 +2346,9 @@ ret_val<bool> Character::is_installable( const item_location &loc, const bool by
         return ret_val<bool>::make_failure( _( "CBM is already installed." ) );
     } else if( !can_install_cbm_on_bp( get_occupied_bodyparts( bid ) ) ) {
         return ret_val<bool>::make_failure( _( "CBM not compatible with patient's body." ) );
+    } else if( std::any_of( bid->mutation_conflicts.begin(), bid->mutation_conflicts.end(),
+                            has_trait_lambda ) ) {
+        return ret_val<bool>::make_failure( _( "CBM not compatible with patient's body." ) );
     } else if( bid->upgraded_bionic &&
                !has_bionic( bid->upgraded_bionic ) &&
                it->is_upgrade() ) {

src/bionics.h

@@ -113,6 +113,10 @@ struct bionic_data {
      * E.g. enhanced optic bionic may cancel HYPEROPIC trait.
      */
     std::vector<trait_id> canceled_mutations;
+    /**
+     * Mutations/traits that prevent installing this CBM
+     */
+    std::set<trait_id> mutation_conflicts;
 
     /**
      * The spells you learn when you install this bionic, and what level you learn them at.

src/mutation.cpp

@@ -856,6 +856,10 @@ bool Character::mutation_ok( const trait_id &mutation, bool force_good, bool for
                 return false;
             }
         }
+
+        if( bid->mutation_conflicts.count( mutation ) != 0 ) {
+            return false;
+        }
     }
 
     const mutation_branch &mdata = mutation.obj();
@@ -1184,6 +1188,14 @@ bool Character::mutate_towards( const trait_id &mut )
         return false;
     }
 
+    // Just prevent it when it conflicts with a CBM, for now
+    // TODO: Consequences?
+    for( const bionic_id &bid : get_bionics() ) {
+        if( bid->mutation_conflicts.count( mut ) != 0 ) {
+            return false;
+        }
+    }
+
     for( size_t i = 0; !has_threshreq && i < threshreq.size(); i++ ) {
         if( has_trait( threshreq[i] ) ) {
             has_threshreq = true;