Fix rng going out of bounds

OpenRCT2 · May 21, 2024 · 6bc6322 · 6bc6322
1 parent e40a167
commit 6bc6322
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/openrct2-ui/windows/ProgressWindow.cpp b/src/openrct2-ui/windows/ProgressWindow.cpp
@@ -138,7 +138,8 @@ namespace OpenRCT2::Ui::Windows
             {
                 // Pick a random style to start off with
                 std::random_device r;
-                std::uniform_int_distribution<int> uniform_dist(0, static_cast<int8_t>(std::size(kVehicleStyles)));
+                auto upperBound = static_cast<int8_t>(std::size(kVehicleStyles)) - 1;
+                std::uniform_int_distribution<int> uniform_dist(0, upperBound);
                 std::default_random_engine e(r());
                 style = static_cast<int8_t>(uniform_dist(e));
             }