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Server: undo inventory client prediction

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The affected player inventory list is now marked as modified.
This way, it will also be re-sent if the server denies the action.
This commit is contained in:
SmallJoker 2025-02-01 10:32:45 +01:00 • committed by SmallJoker
parent 8caf922df6
commit b2a6c3ba23
1 changed files with 25 additions and 1 deletions
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26
src/network/serverpackethandler.cpp
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@ -607,6 +607,24 @@ void Server::handleCommand_InventoryAction(NetworkPacket* pkt)
where the client made a bad prediction.
*/
auto mark_player_inv_list_dirty = [this](const InventoryLocation &loc,
const std::string &list_name) {
// Undo the client prediction of the affected list. See `clientApply`.
if (loc.type != InventoryLocation::PLAYER)
return;
Inventory *inv = m_inventory_mgr->getInventory(loc);
if (!inv)
return;
InventoryList *list = inv->getList(list_name);
if (!list)
return;
list->setModified(true);
};
const bool player_has_interact = checkPriv(player->getName(), "interact");
auto check_inv_access = [player, player_has_interact, this] (
@ -651,8 +669,12 @@ void Server::handleCommand_InventoryAction(NetworkPacket* pkt)
ma->to_inv.applyCurrentPlayer(player->getName());
m_inventory_mgr->setInventoryModified(ma->from_inv);
if (ma->from_inv != ma->to_inv)
mark_player_inv_list_dirty(ma->from_inv, ma->from_list);
bool inv_different = ma->from_inv != ma->to_inv;
if (inv_different)
m_inventory_mgr->setInventoryModified(ma->to_inv);
if (inv_different || ma->from_list != ma->to_list)
mark_player_inv_list_dirty(ma->to_inv, ma->to_list);
if (!check_inv_access(ma->from_inv) ||
!check_inv_access(ma->to_inv))
@ -689,6 +711,7 @@ void Server::handleCommand_InventoryAction(NetworkPacket* pkt)
da->from_inv.applyCurrentPlayer(player->getName());
m_inventory_mgr->setInventoryModified(da->from_inv);
mark_player_inv_list_dirty(da->from_inv, da->from_list);
/*
Disable dropping items out of craftpreview
@ -721,6 +744,7 @@ void Server::handleCommand_InventoryAction(NetworkPacket* pkt)
ca->craft_inv.applyCurrentPlayer(player->getName());
m_inventory_mgr->setInventoryModified(ca->craft_inv);
// Note: `ICraftAction::clientApply` is empty, thus nothing to revert.
// Disallow crafting if not allowed to interact
if (!player_has_interact) {