Quick little fix to add a blank sound for placeholders.

assets/config.json

@@ -3,7 +3,8 @@
     "sword_1": "assets/sword.1.ogg",
     "monster_16": "assets/monster-16.ogg",
     "monster_1": "assets/monster-1.ogg",
-    "step_leather_1": "assets/step_leather_1.ogg"
+    "walk": "assets/blank.ogg",
+    "blank": "assets/blank.ogg"
   },
   "sprites": {
     "armored_knight": "assets/armored_knight_1-256.png",

gui_fsm.cpp

@@ -202,8 +202,7 @@ namespace gui {
     Point move_to = $main_ui.plan_move(dir, strafe);
 
     if($level.map->can_move(move_to) && !$level.collision->occupied(move_to)) {
-      fmt::println("PLAYING WALK");
-      sound::play("step_leather_1");
+      sound::play("walk");
       state(MOVING);
     } else {
       state(IDLE);

sound.cpp

@@ -38,17 +38,26 @@ namespace sound {
 
   void play(const std::string name) {
     dbc::check(initialized, "You need to call sound::init() first");
-    dbc::check(SMGR.sounds.contains(name), fmt::format("sound {} is not loaded in map", name));
-    // get the sound from the sound map
-    auto pair = SMGR.sounds.at(name);
-    // play it
-    pair.sound->play();
+    if(SMGR.sounds.contains(name)) {
+      // get the sound from the sound map
+      auto pair = SMGR.sounds.at(name);
+      // play it
+      pair.sound->play();
+    } else {
+      dbc::log(fmt::format("Attempted to play {} sound but not available.",
+            name));
+    }
   }
 
   void play_at(const std::string name, float x, float y, float z) {
     dbc::check(initialized, "You need to call sound::init() first");
-    auto pair = SMGR.sounds.at(name);
-    pair.sound->setPosition({x, y, z});
-    pair.sound->play();
+    if(SMGR.sounds.contains(name)) {
+      auto pair = SMGR.sounds.at(name);
+      pair.sound->setPosition({x, y, z});
+      pair.sound->play();
+    } else {
+      dbc::log(fmt::format("Attempted to play_at {} sound but not available.",
+            name));
+    }
   }
 }