[ Xedra Evolved ] Species based snares [Robot, Cyborg, Nether, Changeling]

data/json/effects.json

@@ -623,6 +623,15 @@
     ],
     "flags": [ "EFFECT_LIMB_SCORE_MOD" ]
   },
+  {
+    "type": "effect_type",
+    "id": "immobilization",
+    "name": [ "Immobilized" ],
+    "desc": [ "You can't move!" ],
+    "rating": "bad",
+    "show_in_info": true,
+    "flags": [ "EFFECT_IMPEDING" ]
+  },
   {
     "type": "effect_type",
     "id": "stunned",

data/json/traps.json

@@ -202,6 +202,17 @@
     "difficulty": 0,
     "action": "snare_light"
   },
+  {
+    "type": "trap",
+    "id": "tr_species_snare",
+    "name": "species snare trap",
+    "color": "red",
+    "symbol": "~",
+    "visibility": 1,
+    "avoidance": 8,
+    "difficulty": 0,
+    "action": "snare_species"
+  },
   {
     "type": "trap",
     "id": "tr_beartrap",

data/mods/Xedra_Evolved/items/inventor/traps.json

@@ -0,0 +1,50 @@
+[
+  {
+    "id": "stunning_qr_trap",
+    "type": "TOOL",
+    "name": "stunning qr trap",
+    "category": "traps",
+    "properties": { "capture_species": "ROBOT" },
+    "description": "A jagged and eldritch looking QR code ready to be placed wherever you are concerned about mechanical eyes.  Will trap robots if they wander into it.",
+    "weight": "1 g",
+    "volume": "5 ml",
+    "longest_side": "5 cm",
+    "price": "250 USD",
+    "price_postapoc": "5 USD",
+    "material": "plastic",
+    "symbol": "*",
+    "color": "light_gray",
+    "flags": [ "SINGLE_USE" ],
+    "use_action": {
+      "type": "place_trap",
+      "trap": "tr_species_snare",
+      "moves": 150,
+      "practice": 2,
+      "done_message": "You set the qr code."
+    }
+  },
+  {
+    "id": "stunning_arg_trap",
+    "type": "TOOL",
+    "name": "stunning arg trap",
+    "category": "traps",
+    "properties": { "capture_species": "CYBORG" },
+    "description": "A jagged and eldritch looking QR code ready to be placed wherever you are concerned about mechanical eyes.  Will trap cyborgs if they wander into it.",
+    "weight": "1 g",
+    "volume": "5 ml",
+    "longest_side": "5 cm",
+    "price": "250 USD",
+    "price_postapoc": "5 USD",
+    "material": "plastic",
+    "symbol": "*",
+    "color": "light_gray",
+    "flags": [ "SINGLE_USE" ],
+    "use_action": {
+      "type": "place_trap",
+      "trap": "tr_species_snare",
+      "moves": 150,
+      "practice": 2,
+      "done_message": "You set the qr code."
+    }
+  }
+]

src/iuse_actor.cpp

@@ -3925,6 +3925,10 @@ std::optional<int> place_trap_actor::use( Character *p, item &it, const tripoint
     p->mod_moves( -move_cost_final );
 
     place_and_add_as_known( *p, pos, data.trap );
+    const trap &placed_trap = here.tr_at( pos );
+    if( !placed_trap.is_null() ) {
+        const_cast<trap &>( placed_trap ).set_trap_data( it.typeId() );
+    }
     for( const tripoint &t : here.points_in_radius( pos, data.trap.obj().get_trap_radius(), 0 ) ) {
         if( t != pos ) {
             place_and_add_as_known( *p, t, outer_layer_trap );

src/monmove.cpp

@@ -65,6 +65,7 @@ static const efftype_id effect_dragging( "dragging" );
 static const efftype_id effect_grabbed( "grabbed" );
 static const efftype_id effect_harnessed( "harnessed" );
 static const efftype_id effect_led_by_leash( "led_by_leash" );
+static const efftype_id effect_immobilization( "immobilization" );
 static const efftype_id effect_no_sight( "no_sight" );
 static const efftype_id effect_operating( "operating" );
 static const efftype_id effect_pacified( "pacified" );
@@ -969,6 +970,10 @@ void monster::move()
         moves = 0;
         return;
     }
+    if( has_effect( effect_immobilization ) ) {
+        moves = 0;
+        return;
+    }
     if( has_effect( effect_stunned ) || has_effect( effect_psi_stunned ) ) {
         stumble();
         moves = 0;

src/savegame_json.cpp

@@ -4790,8 +4790,10 @@ void submap::store( JsonOut &jsout ) const
                 jsout.start_array();
                 jsout.write( p.x );
                 jsout.write( p.y );
+                const trap_id &trap_at = get_trap( p );
                 // TODO: jsout should support writing an id like jsout.write( trap_id )
-                jsout.write( get_trap( p ).id().str() );
+                jsout.write( trap_at.id().str() );
+                jsout.write( trap_at->trap_item_type );
                 jsout.end_array();
             }
         }
@@ -5048,7 +5050,10 @@ void submap::load( const JsonValue &jv, const std::string &member_name, int vers
             // TODO: jsin should support returning an id like jsin.get_id<trap>()
             const trap_str_id trid( trap_entry.next_string() );
             m->trp[p.x][p.y] = trid.id();
-            if( trap_entry.size() > 3 ) {
+            if( trap_entry.has_more() ) {
+                const_cast<trap &>( m->trp[p.x][p.y].obj() ).set_trap_data( itype_id( trap_entry.next_string() ) );
+            }
+            if( trap_entry.size() > 4 ) {
                 trap_entry.throw_error( "Too many values for trap entry" );
             }
         }

src/trap.cpp

@@ -437,6 +437,11 @@ bool trap::easy_take_down() const
     return avoidance == 0 && difficulty == 0;
 }
 
+void trap::set_trap_data( itype_id trap_item_type_id )
+{
+    trap_item_type = trap_item_type_id;
+}
+
 bool trap::can_not_be_disarmed() const
 {
     return difficulty >= 99;

src/trap.h

@@ -37,6 +37,7 @@ bool cot( const tripoint &p, Creature *c, item *i );
 bool beartrap( const tripoint &p, Creature *c, item *i );
 bool snare_light( const tripoint &p, Creature *c, item *i );
 bool snare_heavy( const tripoint &p, Creature *c, item *i );
+bool snare_species( const tripoint &p, Creature *critter, item *trap_item );
 bool board( const tripoint &p, Creature *c, item *i );
 bool caltrops( const tripoint &p, Creature *c, item *i );
 bool caltrops_glass( const tripoint &p, Creature *c, item *i );
@@ -160,6 +161,7 @@ struct trap {
         // For disassembly?
         std::vector<std::tuple<itype_id, int, int>> components;
     public:
+        std::optional<itype_id> trap_item_type;
         // data required for trapfunc::spell()
         fake_spell spell_data;
         int comfort = 0;
@@ -229,6 +231,8 @@ struct trap {
 
         bool is_trivial_to_spot() const;
 
+        void set_trap_data( itype_id trap_item_type_id );
+
         /**
          * Some traps are part of the terrain (e.g. pits) and can therefore not be disarmed
          * via the usual mechanics. They can be "disarmed" by changing the terrain they are part of.

src/trapfunc.cpp

@@ -53,6 +53,7 @@ static const damage_type_id damage_pure( "pure" );
 static const efftype_id effect_beartrap( "beartrap" );
 static const efftype_id effect_heavysnare( "heavysnare" );
 static const efftype_id effect_in_pit( "in_pit" );
+static const efftype_id effect_immobilization( "immobilization" );
 static const efftype_id effect_lightsnare( "lightsnare" );
 static const efftype_id effect_ridden( "ridden" );
 static const efftype_id effect_slimed( "slimed" );
@@ -682,6 +683,67 @@ bool trapfunc::snare_heavy( const tripoint &p, Creature *c, item * )
     return true;
 }
 
+bool trapfunc::snare_species( const tripoint &p, Creature *critter, item * )
+{
+    map &here = get_map();
+    const trap &laid_trap = here.tr_at( p );
+    if( !critter ) { // Nothing to capture
+        return false;
+    }
+
+    if( laid_trap.is_null() ) {
+        return false; //Should never happen but just in case
+    }
+
+    if( !laid_trap.trap_item_type.has_value() ) {
+        debugmsg( "Active trap %s has no stored item to determine species value.  Removing trap to avoid crashing.",
+                  laid_trap.name() );
+        here.remove_trap( p );
+        return false;
+    }
+
+    item trap_item = item( item::find_type( laid_trap.trap_item_type.value() ) );
+
+    if( !trap_item.has_property( "capture_species" ) ) {
+        debugmsg( "placed trap's item type %s has no \"capture_species\" property!" );
+        here.remove_trap( p );
+        return false;
+    }
+
+    const std::string spec = trap_item.get_property_string( "capture_species" );
+    const species_id species_to_capture = species_id( spec );
+
+    if( !critter->in_species( species_to_capture ) ) {
+        critter->add_msg_if_player( m_good, _( "You harmlessly pass a %1$s." ),
+                                    laid_trap.name() );
+        return false;
+    }
+
+    {
+        sounds::sound( p, 8, sounds::sound_t::combat, _( "phwoom!" ), false, "trap", "species_snare" );
+    }
+
+    if( critter ) {
+        const bodypart_id hit = critter->get_random_body_part_of_type( body_part_type::type::leg );
+
+        critter->add_msg_if_player( m_bad, _( "A %1$s catches your %2$s!" ),
+                                    laid_trap.name(), hit->name.translated() );
+
+        if( critter->has_effect( effect_ridden ) ) {
+            add_msg( m_warning, _( "Your %1$s is caught by a %2$s!" ), critter->get_name(), laid_trap.name() );
+        }
+        if( !critter->is_avatar() ) {
+            add_msg_if_player_sees( p, "%1$s is caught by a %2$s!", critter->get_name(), laid_trap.name() );
+        }
+        // Actual effects
+        critter->add_effect( effect_immobilization, 10_turns, hit );
+        critter->check_dead_state();
+    }
+
+    here.remove_trap( p );
+    return true;
+}
+
 bool trapfunc::landmine( const tripoint &p, Creature *c, item * )
 {
     // tiny animals are too light to trigger land mines
@@ -1669,6 +1731,7 @@ const trap_function &trap_function_from_string( const std::string &function_name
             { "blade", trapfunc::blade },
             { "snare_light", trapfunc::snare_light },
             { "snare_heavy", trapfunc::snare_heavy },
+            { "snare_species", trapfunc::snare_species },
             { "landmine", trapfunc::landmine },
             { "telepad", trapfunc::telepad },
             { "goo", trapfunc::goo },