Automatically migrate pets to the new system that keeps hatched eggs in the inventory

- The pet evolution update caused all already hatched eggs to get lost cause the previous system would actually remove the egg unlike the new one, this code will ensure the return of it.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/map/pet.c b/src/map/pet.c
index 96fe63c51..ce26b6cb1 100644
--- a/src/map/pet.c
+++ b/src/map/pet.c
@@ -348,6 +348,21 @@ static int pet_return_egg(struct map_session_data *sd, struct pet_data *pd)
 	if (i != sd->status.inventorySize) {
 		sd->status.inventory[i].attribute &= ~ATTR_BROKEN;
 		sd->status.inventory[i].bound = IBT_NONE;
+	} else {
+		// The pet egg wasn't found: it was probably hatched with the old system that deleted the egg.
+		struct item tmp_item = {0};
+		int flag;
+
+		tmp_item.nameid = pd->petDB->EggID;
+		tmp_item.identify = 1;
+		tmp_item.card[0] = CARD0_PET;
+		tmp_item.card[1] = GetWord(pd->pet.pet_id, 0);
+		tmp_item.card[2] = GetWord(pd->pet.pet_id, 1);
+		tmp_item.card[3] = pd->pet.rename_flag;
+		if ((flag = pc->additem(sd, &tmp_item, 1, LOG_TYPE_EGG)) != 0) {
+			clif->additem(sd, 0, 0, flag);
+			map->addflooritem(&sd->bl, &tmp_item, 1, sd->bl.m, sd->bl.x, sd->bl.y, 0, 0, 0, 0, false);
+		}
 	}
 #if PACKETVER >= 20180704
 	clif->inventoryList(sd);