mirror of https://github.com/OpenRCT2/OpenRCT2.git
Merge pull request #4359 from jensj12/infinite-loop
Fix #2081: Prevent infinite loop
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commit
73cf06d334
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@ -6,6 +6,7 @@
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- Feature: Implementation of the user-defined currency
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- Feature: Add ability to rotate map elements with the tile inspector.
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- Feature: Add ride console command for diagnostics and changing vehicle type.
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- Feature: Allow selecting corners when using the mountain tool.
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- Feature: Allow setting ownership of map edges.
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- Feature: Allow up to 255 cars per train.
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- Feature: Importing SV4 and SC4 files with rides.
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@ -28,6 +29,7 @@
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- Removed: BMP screenshots.
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- Removed: Intamin and Phoenix easter eggs.
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- Fix: [#1038] Guest List is out of order.
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- Fix: [#2081] Game hangs when track has infinite loop.
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- Fix: [#2754] Dragging scrollview fails when scaled.
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- Fix: [#3210] Scenery window scrolls too far.
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- Fix: [#3282] Launched Freefall ride ratings are fixed for Downward Launch (original bug).
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@ -743,7 +743,7 @@ int ride_find_track_gap(rct_xy_element *input, rct_xy_element *output)
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{
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rct_window *w;
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rct_ride *ride;
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track_circuit_iterator it;
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track_circuit_iterator it, slowIt;
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int rideIndex;
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rideIndex = input->element->properties.track.ride_index;
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@ -756,12 +756,27 @@ int ride_find_track_gap(rct_xy_element *input, rct_xy_element *output)
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if (w != NULL && _rideConstructionState != RIDE_CONSTRUCTION_STATE_0 && _currentRideIndex == rideIndex)
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sub_6C9627();
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bool counter = true;
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track_circuit_iterator_begin(&it, *input);
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slowIt = it;
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while (track_circuit_iterator_next(&it)) {
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if (!track_is_connected_by_shape(it.last.element, it.current.element)) {
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*output = it.current;
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return 1;
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}
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//#2081: prevent an infinite loop
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counter = !counter;
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if (counter) {
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track_circuit_iterator_next(&slowIt);
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if (slowIt.currentZ == it.currentZ &&
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slowIt.currentDirection == it.currentDirection &&
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slowIt.current.x == it.current.x &&
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slowIt.current.y == it.current.y) {
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*output = it.current;
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return 1;
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}
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}
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}
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if (!it.looped) {
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*output = it.last;
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@ -5753,7 +5753,11 @@ static void vehicle_update_block_breaks_open_previous_section(rct_vehicle *vehic
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int x = vehicle->track_x;
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int y = vehicle->track_y;
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int z = vehicle->track_z;
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track_begin_end trackBeginEnd;
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track_begin_end trackBeginEnd, slowTrackBeginEnd;
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rct_map_element slowMapElement = *mapElement;
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bool counter = true;
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int slowX = x;
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int slowY = y;
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do {
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if (!track_block_get_previous(x, y, mapElement, &trackBeginEnd)) {
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return;
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@ -5768,6 +5772,21 @@ static void vehicle_update_block_breaks_open_previous_section(rct_vehicle *vehic
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y = trackBeginEnd.end_y;
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z = trackBeginEnd.begin_z;
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mapElement = trackBeginEnd.begin_element;
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//#2081: prevent infinite loop
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counter = !counter;
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if (counter) {
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track_block_get_previous(slowX, slowY, &slowMapElement, &slowTrackBeginEnd);
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slowX = slowTrackBeginEnd.end_x;
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slowY = slowTrackBeginEnd.end_y;
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slowMapElement = *(slowTrackBeginEnd.begin_element);
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if (slowX == x &&
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slowY == y &&
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slowMapElement.base_height == mapElement->base_height &&
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slowMapElement.type == mapElement->type ) {
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return;
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}
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}
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} while (!track_element_is_block_start(trackBeginEnd.begin_element));
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// Get the start of the track block instead of the end
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