Add some dialog function (CleverRaven#67120)

* add topic_item mutator, get hp_max

* format json

* doc update

* topic_item is string

* port hp_max to math

data/json/npcs/TALK_TEST.json

@@ -1624,6 +1624,30 @@
       { "text": "Mod Innawood is loaded.", "topic": "TALK_DONE", "condition": { "mod_is_loaded": "innawood" } }
     ]
   },
+  {
+    "type": "talk_topic",
+    "id": "TALK_TEST_TOPIC_ITEM_MUTATOR",
+    "dynamic_line": "This is a test conversation that shouldn't appear in the game.",
+    "responses": [ { "text": "This is a basic test response.", "topic": "TALK_DONE" } ],
+    "repeat_responses": [
+      {
+        "for_item": "bottle_glass",
+        "response": { "text": "This is a repeated item bottle_glass test response", "topic": "TALK_TEST_TOPIC_ITEM_MUTATOR_2" }
+      }
+    ]
+  },
+  {
+    "type": "talk_topic",
+    "id": "TALK_TEST_TOPIC_ITEM_MUTATOR_2",
+    "dynamic_line": "This is a test conversation that shouldn't appear in the game.",
+    "responses": [
+      {
+        "text": "This is a basic test response.",
+        "topic": "TALK_DONE",
+        "effect": { "set_string_var": { "mutator": "topic_item" }, "target_var": { "global_val": "key1" } }
+      }
+    ]
+  },
   {
     "type": "npc_class",
     "id": "test_shop_class",

doc/NPCs.md

@@ -1261,6 +1261,7 @@ Mutator Name | Required Keys | Description
 `"ma_technique_description"` | `matec_id`: String or [variable object](#variable-object). | Returns the description of the martial arts tech with ID `matec_id` 
 `"valid_technique`" | `blacklist`: array of String or [variable object](#variable-object). <br/> `crit`: bool <br/> `dodge_counter`: bool <br/> `block_counter`: bool | Returns a random valid technique for the alpha talker to use against the beta talker with the provided specifications.
 `"loc_relative_u"` | `target`: String or [variable object](#variable-object). | target should be a string like "(x,y,z)" where x,y,z are coordinates relative to the player. Returns the abs_ms coordinates as a string (ready to store as a location variable), in the form "(x,y,z)" of the provided point relative to the player. So `"target":"(0,1,0)"` would return the point south of the player.
+`"topic_item"` | | Returns current topic_item as a string. See [Repeat Responses](#repeat-responses)
 
 
 ### Compare Numbers and Arithmetics
@@ -1462,6 +1463,7 @@ _function arguments are `d`oubles (or sub-expressions), `s`trings, or `v`[ariabl
 |----------|------|--------|-------|-------------|
 | armor(`s`/`v`,`s`/`v`)    |  ✅   |   ❌  | u, n  | Return the numerical value for a characters armor on a body part, for a damage type.<br/> Variables are damagetype ID, bodypart ID.<br/> Example:<br/>`"condition": { "math": [ "u_armor('bash', 'torso')", ">=", "5"] }`|  
 | attack_speed()    |  ✅   |   ❌  | u, n  | Return the characters current adjusted attack speed with their current weapon.<br/> Example:<br/>`"condition": { "math": [ "u_attack_speed()", ">=", "10"] }`| 
+| hp_max(`s`/`v`)    |  ✅   |   ❌  | u, n  | Return the characters max amount of hp on a body part.<br/> Variable is bodypart ID.<br/> Example:<br/>`"condition": { "math": [ "u_hp_max('torso')", ">=", "100"] }`|
 | game_option(`s`/`v`)   |  ✅  |   ❌   | N/A<br/>(global)  | Return the numerical value of a game option<br/> Example:<br/>`"condition": { "math": [ "game_option('NPC_SPAWNTIME')", ">=", "5"] }`|
 | monsters_nearby(`s`/`v`...)     |  ✅  |   ❌   | u, n, global  | Return the number of nearby monsters. Takes any number of `s`tring or `v`ariable positional parameters as monster IDs. <br/><br/>Optional kwargs:<br/>`radius`: `d`/`v` - limit to radius (rl_dist)<br/>`location`: `v` - center search on this location<br/><br/>The `location` kwarg is mandatory in the global scope.<br/><br/>Examples:<br/>`"condition": { "math": [ "u_monsters_nearby('radius': u_search_radius * 3)", ">", "5" ] }`<br/><br/>`"condition": { "math": [ "monsters_nearby('mon_void_maw', 'mon_void_limb', mon_fotm_var, 'radius': u_search_radius * 3, 'location': u_search_loc)", ">", "5" ] }`|
 | num_input(`s`/`v`,`d`/`v`)   |  ✅  |   ❌   | N/A<br/>(global)  | Prompt the player for a number.<br/> Variables are Prompt text, Default Value:<br/>`"math": [ "u_value_to_set", "=", "num_input('Playstyle Perks Cost?', 4)" ]`|

src/condition.cpp

@@ -1546,6 +1546,10 @@ static std::function<T( const dialogue & )> get_get_str_( const JsonObject &jo,
             tripoint_abs_ms target_pos = char_pos + tripoint::from_string( target.evaluate( d ) );
             return ret_func( target_pos.to_string() );
         };
+    } else if( jo.get_string( "mutator" ) == "topic_item" ) {
+        return [ret_func]( const dialogue & d ) {
+            return ret_func( d.cur_item.str() );
+        };
     }
 
     return nullptr;

src/math_parser_diag.cpp

@@ -193,6 +193,15 @@ std::function<double( dialogue & )> armor_eval( char scope,
     };
 }
 
+std::function<double( dialogue & )> hp_max_eval( char scope,
+        std::vector<diag_value> const &params, diag_kwargs const &/* kwargs */ )
+{
+    return[bpid = params[0], beta = is_beta( scope )]( dialogue const & d ) {
+        bodypart_id bp( bpid.str( d ) );
+        return d.actor( beta )->get_hp_max( bp );
+    };
+}
+
 std::function<double( dialogue & )> num_input_eval( char /*scope*/,
         std::vector<diag_value> const &params, diag_kwargs const &/* kwargs */ )
 {

src/math_parser_diag.h

@@ -99,6 +99,7 @@ using decl_diag_ass = std::function<void( dialogue &, double )> ( char scope,
 
 decl_diag_eval armor_eval;
 decl_diag_eval attack_speed_eval;
+decl_diag_eval hp_max_eval;
 decl_diag_eval monsters_nearby_eval;
 decl_diag_eval num_input_eval;
 decl_diag_eval option_eval;
@@ -119,6 +120,7 @@ inline std::map<std::string_view, dialogue_func_eval> const dialogue_eval_f{
     { "armor", { "un", 2, armor_eval } },
     { "attack_speed", { "un", 0, attack_speed_eval } },
     { "game_option", { "g", 1, option_eval } },
+    { "hp_max", { "un", 1, hp_max_eval } },
     { "monsters_nearby", { "ung", -1, monsters_nearby_eval } },
     { "num_input", { "g", 2, num_input_eval } },
     { "pain", { "un", 0, pain_eval } },

src/talker.h

@@ -131,6 +131,9 @@ class talker
         virtual int get_cur_hp( const bodypart_id & ) const {
             return 0;
         }
+        virtual int get_hp_max( const bodypart_id & ) const {
+            return 0;
+        }
         virtual int get_cur_part_temp( const bodypart_id & ) const {
             return 0;
         }

src/talker_character.cpp

@@ -83,6 +83,11 @@ int talker_character_const::get_cur_hp( const bodypart_id &bp ) const
     return me_chr_const->get_hp( bp );
 }
 
+int talker_character_const::get_hp_max( const bodypart_id &bp ) const
+{
+    return me_chr_const->get_hp_max( bp );
+}
+
 int talker_character_const::get_cur_part_temp( const bodypart_id &bp ) const
 {
     return me_chr_const->get_part_temp_conv( bp );

src/talker_character.h

@@ -44,6 +44,7 @@ class talker_character_const: public talker_cloner<talker_character_const>
         tripoint_abs_ms global_pos() const override;
         tripoint_abs_omt global_omt_location() const override;
         int get_cur_hp( const bodypart_id &bp ) const override;
+        int get_hp_max( const bodypart_id &bp ) const override;
         int get_cur_part_temp( const bodypart_id &bp ) const override;
 
         // stats, skills, traits, bionics, and magic

src/talker_monster.cpp

@@ -190,6 +190,11 @@ int talker_monster_const::get_cur_hp( const bodypart_id & ) const
     return me_mon_const->get_hp();
 }
 
+int talker_monster_const::get_hp_max( const bodypart_id & ) const
+{
+    return me_mon_const->get_hp_max();
+}
+
 bool talker_monster_const::will_talk_to_u( const Character &you, bool )
 {
     return !you.is_dead_state();

src/talker_monster.h

@@ -61,6 +61,7 @@ class talker_monster_const: public talker_cloner<talker_monster_const>
         bool will_talk_to_u( const Character &u, bool force ) override;
         std::vector<std::string> get_topics( bool radio_contact ) override;
         int get_cur_hp( const bodypart_id & ) const override;
+        int get_hp_max( const bodypart_id & ) const override;
     protected:
         talker_monster_const() = default;
         const monster *me_mon_const;

tests/npc_talk_test.cpp

@@ -1651,3 +1651,26 @@ TEST_CASE( "npc_arithmetic", "[npc_talk]" )
     // Teardown
     player_character.remove_value( var_name );
 }
+
+TEST_CASE( "test_topic_item_mutator", "[npc_talk]" )
+{
+    dialogue d;
+    prep_test( d );
+    Character &player_character = get_avatar();
+    clear_avatar();
+    global_variables &globvars = get_globals();
+    globvars.clear_global_values();
+
+    player_character.inv->add_item( item( itype_bottle_glass ) );
+    CHECK( player_character.has_amount( itype_bottle_glass, 1 ) );
+    d.add_topic( "TALK_TEST_TOPIC_ITEM_MUTATOR" );
+    gen_response_lines( d, 2 );
+    talk_response &chosen = d.responses[0];
+    CHECK( chosen.text == "This is a repeated item bottle_glass test response" );
+    d.add_topic( chosen.success.next_topic );
+    gen_dynamic_line( d );
+    gen_response_lines( d, 1 );
+    chosen = d.responses[0];
+    chosen.success.apply( d );
+    CHECK( globvars.get_global_value( "npctalk_var_key1" ) == "bottle_glass" );
+}