misc: fix assigning position to auxiliary items

Regression since 51fc83f9f3

src/game/carrier.c

@@ -286,6 +286,7 @@ static void Carrier_AnimateDrop(CARRIED_ITEM *item)
 
     // Track animating status in the carrier for saving/loading.
     item->pos = pickup->pos;
+    item->rot = pickup->rot;
     item->room_number = pickup->room_number;
     item->fall_speed = pickup->fall_speed;
 }

src/game/items.c

@@ -313,6 +313,7 @@ int16_t Item_Spawn(ITEM_INFO *item, int16_t object_num)
         spawn->object_number = object_num;
         spawn->room_number = item->room_number;
         spawn->pos = item->pos;
+        spawn->rot = item->rot;
         Item_Initialise(spawn_num);
         spawn->status = IS_NOT_ACTIVE;
         spawn->shade = 4096;

src/game/objects/traps/dart.c

@@ -143,6 +143,7 @@ void DartEmitter_Control(int16_t item_num)
             if (fx_num != NO_ITEM) {
                 FX_INFO *fx = &g_Effects[fx_num];
                 fx->pos = dart->pos;
+                fx->rot = dart->rot;
                 fx->speed = 0;
                 fx->frame_number = 0;
                 fx->counter = 0;

src/game/objects/traps/thors_hammer.c

@@ -42,6 +42,7 @@ void ThorsHandle_Initialise(int16_t item_num)
     head_item->object_number = O_THORS_HEAD;
     head_item->room_number = hand_item->room_number;
     head_item->pos = hand_item->pos;
+    head_item->rot = hand_item->rot;
     head_item->shade = hand_item->shade;
     Item_Initialise(head_item_num);
     hand_item->data = head_item;