Now items drop where you aim, and won't let you drop on a floor. But maybe one more change.

gui/dnd_loot.cpp

@@ -112,8 +112,7 @@ namespace gui {
       case AIM_CLICK: {
           // take from inventory, drop on floor
           bool worked = throw_on_floor($status_ui.$gui, true);
-          dbc::check(worked, "Need to fix this, should be able to abort.");
+          if(worked) END(CLOSE);
-          END(CLOSE);
         } break;
       case INV_SELECT: {
           auto drop_id = std::any_cast<guecs::Entity>(data);
@@ -139,8 +138,7 @@ namespace gui {
       case AIM_CLICK: {
         // THIS IS PUT IT BACK ON THE FLOOR
         bool worked = throw_on_floor($loot_ui.$gui, false);
-        dbc::check(worked, "Failed to drop it back on the floor.");
+        if(worked) END(CLOSE);
-        END(CLOSE);
        } break;
       default:
         handle_mouse(ev, $loot_ui.$gui);
@@ -196,7 +194,6 @@ namespace gui {
   }
 
   void DNDLoot::clear_grab() {
-    dbc::log("CLEARED!");
     $grab_source = std::nullopt;
     $grab_sprite = nullptr;
   }
@@ -291,7 +288,6 @@ namespace gui {
         "StatusUI doesn't actually have that GrabSource in the gui.");
 
     auto& grab = gui.get<guecs::GrabSource>(*$grab_source);
-    grab.commit();
 
     bool result = false;
 
@@ -301,7 +297,11 @@ namespace gui {
       result = $loot_ui.drop_item(grab.world_entity);
     }
 
-    clear_grab();
+    if(result) {
+      grab.commit();
+      clear_grab();
+    }
+
     return result;
   }
 

gui/status_ui.cpp

@@ -102,8 +102,7 @@ namespace gui {
 
   bool StatusUI::place_slot(guecs::Entity gui_id, DinkyECS::Entity world_entity) {
     auto& slot_name = $gui.name_for(gui_id);
-    auto player = $level.world->get_the<components::Player>();
+    auto& inventory = $level.world->get<inventory::Model>($level.player);
-    auto& inventory = $level.world->get<inventory::Model>(player.entity);
 
     if(inventory.add(slot_name, world_entity)) {
       $level.world->make_constant(world_entity);
@@ -123,18 +122,8 @@ namespace gui {
 
   // NOTE: do I need this or how does it relate to drop_item?
   void StatusUI::remove_slot(guecs::Entity slot_id) {
-    // NOTE: really the System should coordinate either dropping on the
-    // ground or moving from one container or another, so when loot_ui
-    // moves to use an ECS id to a container I can have the System
-    // do it.
     auto& slot_name = $gui.name_for(slot_id);
-
+    System::remove_from_container(*$level.world, $level.player, slot_name);
-    auto player = $level.world->get_the<components::Player>();
-    auto& inventory = $level.world->get<inventory::Model>(player.entity);
-
-    auto world_entity = inventory.get(slot_name);
-    inventory.remove(world_entity);
-
     $gui.remove<guecs::GrabSource>(slot_id);
     $gui.remove<guecs::Icon>(slot_id);
   }
@@ -143,8 +132,7 @@ namespace gui {
     if(gui_a != gui_b) {
       auto& a_name = $gui.name_for(gui_a);
       auto& b_name = $gui.name_for(gui_b);
-      auto player = $level.world->get_the<components::Player>();
+      System::inventory_swap($level, $level.player, a_name, b_name);
-      System::inventory_swap($level, player.entity, a_name, b_name);
     }
 
     update();

systems.cpp

@@ -444,30 +444,22 @@ bool System::drop_item(GameLevel& level, Entity item) {
   auto& map = *level.map;
   auto& collision = *level.collision;
 
-  auto player = world.get_the<Player>();
+  auto player_pos = world.get<Position>(level.player);
-  auto player_pos = world.get<Position>(player.entity);
+
-  auto& player_inv = world.get<inventory::Model>(player.entity);
+  Position pos{player_pos.aiming_at.x, player_pos.aiming_at.y};
-
-  // doesn't compass already avoid walls?
-  for(matrix::box it{map.walls(), player_pos.location.x, player_pos.location.y, 1}; it.next();)
-  {
-    Position pos{it.x, it.y};
-
-    if(map.can_move(pos.location) && !collision.occupied(pos.location)) {
-      world.set<Position>(item, pos);
-      collision.insert(pos.location, item, false);
-      // BUG: really there should be another system that handles loot->inv moves
-      if(player_inv.has(item)) player_inv.remove(item);
-      level.world->send<Events::GUI>(Events::GUI::ENTITY_SPAWN, item, {});
-      level.world->not_constant(item);
-      return true;
-    }
-  }
 
-  return false;
+  if(map.can_move(pos.location)) {
+    world.set<Position>(item, pos);
+    collision.insert(pos.location, item, false);
+    level.world->not_constant(item);
+    level.world->send<Events::GUI>(Events::GUI::ENTITY_SPAWN, item, {});
+    return true;
+  } else {
+    return false;
+  }
 }
 
-// NOTE: I tink pickup and this need to be different
+// NOTE: I think pickup and this need to be different
 bool System::place_in_container(World& world, Entity cont_id, const std::string& name, Entity world_entity) {
   auto& container = world.get<inventory::Model>(cont_id);