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Tracerestrict: Only apply wait at PBS for intermediary signals in forward direction

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pull/642/head
Jonathan G Rennison 4 months ago
parent b4b61beeec
commit 7d086ae686
2 changed files with 38 additions and 16 deletions
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30
src/pathfinder/yapf/yapf_rail.cpp
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@ -197,7 +197,8 @@ public:
struct IntermediaryTraceRestrictSignalInfo {
const TraceRestrictProgram *prog;
TileIndex tile;
Trackdir trackdir;
Trackdir trackdir;
bool front_side;
};
/* Nodes are iterated in reverse order (from the target), but tiles within the node are iterated in forward order (towards the target).
* intermediary_restricted_signals is in reverse order, (the first signal to evaluate at the end).
@ -210,10 +211,18 @@ public:
node->template IterateTiles<CYapfReserveTrack>(Yapf().GetVehicle(), Yapf(), [&](TileIndex tile, Trackdir td) -> bool {
/* Cheapest tests first */
if (IsTileType(tile, MP_RAILWAY) && HasSignals(tile) && IsRestrictedSignal(tile) && HasSignalOnTrack(tile, TrackdirToTrack(td))) {
const bool front_side = HasSignalOnTrackdir(tile, td);
TraceRestrictProgramActionsUsedFlags au_flags = TRPAUF_SLOT_ACQUIRE;
if (front_side) {
/* Passing through a signal from the front side */
au_flags |= TRPAUF_WAIT_AT_PBS;
}
const TraceRestrictProgram *prog = GetExistingTraceRestrictProgram(tile, TrackdirToTrack(td));
if (prog != nullptr && prog->actions_used_flags & (TRPAUF_WAIT_AT_PBS | TRPAUF_SLOT_ACQUIRE)) {
if (prog != nullptr && prog->actions_used_flags & au_flags) {
/* Insert at intermediary_restricted_signals_current_size, such that if there are multiple signals for this node, they end up in reverse order */
intermediary_restricted_signals.insert(intermediary_restricted_signals.begin() + intermediary_restricted_signals_current_size, { prog, tile, td });
intermediary_restricted_signals.insert(intermediary_restricted_signals.begin() + intermediary_restricted_signals_current_size, { prog, tile, td, front_side });
}
}
@ -245,16 +254,19 @@ public:
for (auto iter = intermediary_restricted_signals.rbegin(); iter != intermediary_restricted_signals.rend(); ++iter) {
extern TileIndex VehiclePosTraceRestrictPreviousSignalCallback(const Train *v, const void *, TraceRestrictPBSEntrySignalAuxField mode);
if (!temporary_slot_state.IsActive()) {
/* The temporary slot state needs to be be pushed because permission to use it is granted by TRPISP_ACQUIRE_TEMP_STATE */
temporary_slot_state.PushToChangeStack();
TraceRestrictProgramInput input(iter->tile, iter->trackdir, &VehiclePosTraceRestrictPreviousSignalCallback, nullptr);
if (iter->prog->actions_used_flags & TRPAUF_SLOT_ACQUIRE) {
input.permitted_slot_operations = TRPISP_ACQUIRE_TEMP_STATE;
if (!temporary_slot_state.IsActive()) {
/* The temporary slot state needs to be be pushed because permission to use it is granted by TRPISP_ACQUIRE_TEMP_STATE */
temporary_slot_state.PushToChangeStack();
}
}
TraceRestrictProgramInput input(iter->tile, iter->trackdir, &VehiclePosTraceRestrictPreviousSignalCallback, nullptr);
input.permitted_slot_operations = TRPISP_ACQUIRE_TEMP_STATE;
TraceRestrictProgramResult out;
iter->prog->Execute(Yapf().GetVehicle(), input, out);
if (out.flags & TRPRF_WAIT_AT_PBS) {
if (iter->front_side && out.flags & TRPRF_WAIT_AT_PBS) {
/* Wait at PBS is set, take this as waiting at the start signal */
undo_reservation();
return false;

24
src/train_cmd.cpp
Unescape Escape View File

@ -3876,19 +3876,29 @@ static PBSTileInfo ExtendTrainReservation(const Train *v, const PBSTileInfo &ori
}
if (IsTileType(tile, MP_RAILWAY) && HasSignals(tile) && IsRestrictedSignal(tile) && HasSignalOnTrack(tile, TrackdirToTrack(cur_td))) {
const bool front_side = HasSignalOnTrackdir(tile, cur_td);
TraceRestrictProgramActionsUsedFlags au_flags = TRPAUF_SLOT_ACQUIRE;
if (front_side) {
/* Passing through a signal from the front side */
au_flags |= TRPAUF_WAIT_AT_PBS;
}
const TraceRestrictProgram *prog = GetExistingTraceRestrictProgram(tile, TrackdirToTrack(cur_td));
if (prog != nullptr && prog->actions_used_flags & (TRPAUF_WAIT_AT_PBS | TRPAUF_SLOT_ACQUIRE)) {
if (prog != nullptr && prog->actions_used_flags & au_flags) {
TraceRestrictProgramInput input(tile, cur_td, &VehiclePosTraceRestrictPreviousSignalCallback, nullptr);
if (prog->actions_used_flags & TRPAUF_SLOT_ACQUIRE) {
input.permitted_slot_operations = TRPISP_ACQUIRE_TEMP_STATE;
if (!temporary_slot_state.IsActive()) {
/* The temporary slot state needs to be be pushed because permission to use it is granted by TRPISP_ACQUIRE_TEMP_STATE */
temporary_slot_state.PushToChangeStack();
if (!temporary_slot_state.IsActive()) {
/* The temporary slot state needs to be be pushed because permission to use it is granted by TRPISP_ACQUIRE_TEMP_STATE */
temporary_slot_state.PushToChangeStack();
}
}
TraceRestrictProgramInput input(tile, cur_td, &VehiclePosTraceRestrictPreviousSignalCallback, nullptr);
input.permitted_slot_operations = TRPISP_ACQUIRE_TEMP_STATE;
TraceRestrictProgramResult out;
prog->Execute(v, input, out);
if (out.flags & TRPRF_WAIT_AT_PBS) {
if (front_side && (out.flags & TRPRF_WAIT_AT_PBS)) {
/* Wait at PBS is set, take this as waiting at the start signal, handle as a reservation failure */
break;
}

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