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fix crash when undoing if there were no snapshots

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jacob1
2017-02-18 23:41:52 -05:00
parent 2967cde4c0
commit 61e19a3237
1 changed files with 2 additions and 0 deletions
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2
src/gui/game/GameController.cpp
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@@ -233,6 +233,8 @@ GameController::~GameController()
void GameController::HistoryRestore() void GameController::HistoryRestore()
{ {
std::deque<Snapshot*> history = gameModel->GetHistory(); std::deque<Snapshot*> history = gameModel->GetHistory();
if (!history.size())
return;
unsigned int historyPosition = gameModel->GetHistoryPosition(); unsigned int historyPosition = gameModel->GetHistoryPosition();
unsigned int newHistoryPosition = std::max((int)historyPosition-1, 0); unsigned int newHistoryPosition = std::max((int)historyPosition-1, 0);
// When undoing, save the current state as a final redo // When undoing, save the current state as a final redo