Enemies can be tagged as moving randomly, but it's very subtle.

assets/enemies.json

@@ -33,7 +33,8 @@
     "components": [
       {"type": "Tile", "config": {"chr": "\u17a5"}},
       {"type": "Combat", "config": {"hp": 100, "damage": 5}},
-      {"type": "EnemyConfig", "config": {"hearing_distance": 3}}
+      {"type": "EnemyConfig", "config": {"hearing_distance": 15}},
+      {"type": "Motion", "config": {"dx": 0, "dy": 0, "random": true}}
     ]
   },
   "RAT": {

components.hpp

@@ -19,6 +19,7 @@ namespace components {
   struct Motion {
     int dx;
     int dy;
+    bool random=false;
     DEFINE_SERIALIZABLE(Motion, dx, dy);
   };
 
@@ -68,6 +69,8 @@ namespace components {
         world.set<EnemyConfig>(entity, {config["hearing_distance"]});
       } else if(comp["type"] == "Combat") {
         world.set<Combat>(entity, {config["hp"], config["damage"]});
+      } else if(comp["type"] == "Motion") {
+        world.set<Motion>(entity, {config["dx"], config["dy"], config["random"]});
       } else {
         dbc::sentinel(fmt::format("ITEM COMPONENT TYPE MISSING: {}",
               std::string(comp["type"])));

systems.cpp

@@ -43,7 +43,7 @@ void System::enemy_pathing(DinkyECS::World &world, Map &game_map, Player &player
 
       Point out = position.location; // copy
       if(game_map.distance(out) < config.hearing_distance) {
-        game_map.neighbors(out);
+        game_map.neighbors(out, motion.random);
         motion = { int(out.x - position.location.x), int(out.y - position.location.y)};
       }
     }

worldbuilder.cpp

@@ -192,11 +192,15 @@ DinkyECS::Entity place_combatant(DinkyECS::World &world, Map &game_map, std::str
   auto enemy = world.entity();
   auto enemy_data = config.enemies[name];
   world.set<Position>(enemy, {game_map.place_entity(in_room)});
-  world.set<Motion>(enemy, {0,0});
 
   if(enemy_data.contains("components")) {
     components::configure(world, enemy, enemy_data);
   }
+
+  if(!world.has<Motion>(enemy)) {
+    world.set<Motion>(enemy, {0,0});
+  }
+
   return enemy;
 }