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Inventory: skip redundant stack movement
The list of dragged stacks includes the source stack, which however does not need to be moved onto itself. This is an optimization.
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@ -4447,6 +4447,12 @@ bool GUIFormSpecMenu::OnEvent(const SEvent& event)
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if (m_left_drag_stacks.size() > 1) {
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// Finalize the left-dragging
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for (auto &ds : m_left_drag_stacks) {
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if (ds.first == *m_selected_item) {
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// This entry is needed to properly calculate the stack sizes.
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// The stack already exists, hence no further action needed here.
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continue;
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}
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// Check how many items we should move to this slot,
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// it may be less than the full split
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Inventory *inv_to = m_invmgr->getInventory(ds.first.inventoryloc);
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@ -43,7 +43,7 @@ public:
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{
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}
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bool operator==(const ItemSpec& other)
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bool operator==(const ItemSpec& other) const
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{
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return inventoryloc == other.inventoryloc &&
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listname == other.listname && i == other.i;
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