Add tunnel/bridge entrance/exit values to entry direction conditional

src/lang/english.txt

@@ -3177,6 +3177,7 @@ STR_TRACE_RESTRICT_CONDITIONAL_ORDER_DEPOT                      :{STRING} {STRIN
 STR_TRACE_RESTRICT_CONDITIONAL_CARGO                            :{STRING} train {STRING} cargo: {STRING} then
 STR_TRACE_RESTRICT_CONDITIONAL_ENTRY_DIRECTION                  :{STRING} train {STRING} entering from {STRING} tile edge then
 STR_TRACE_RESTRICT_CONDITIONAL_ENTRY_SIGNAL_FACE                :{STRING} train {STRING} entering from {STRING} of signal then
+STR_TRACE_RESTRICT_CONDITIONAL_ENTRY_SIGNAL_TYPE                :{STRING} train {STRING} {STRING} then
 STR_TRACE_RESTRICT_CONDITIONAL_TILE_INDEX                       :{STRING} {STRING} {STRING} at {NUM} x {NUM} then
 STR_TRACE_RESTRICT_CONDITIONAL_GROUP                            :{STRING} train {STRING} in group: {GROUP} then
 STR_TRACE_RESTRICT_CONDITIONAL_GROUP_STR                        :{STRING} train {STRING} in group: {STRING} {BLACK}{STRING}then
@@ -3220,6 +3221,8 @@ STR_TRACE_RESTRICT_DIRECTION_NE                                 :north-east
 STR_TRACE_RESTRICT_DIRECTION_SE                                 :south-east
 STR_TRACE_RESTRICT_DIRECTION_SW                                 :south-west
 STR_TRACE_RESTRICT_DIRECTION_NW                                 :north-west
+STR_TRACE_RESTRICT_DIRECTION_TUNBRIDGE_ENTRANCE                 :entering tunnel/bridge
+STR_TRACE_RESTRICT_DIRECTION_TUNBRIDGE_EXIT                     :exiting tunnel/bridge
 STR_TRACE_RESTRICT_COMPANY                                      :Company
 STR_TRACE_RESTRICT_UNDEFINED_COMPANY                            :Undefined company
 STR_TRACE_RESTRICT_SLOT_OP                                      :Slot operation

src/tracerestrict.cpp

@@ -328,13 +328,21 @@ void TraceRestrictProgram::Execute(const Train* v, const TraceRestrictProgramInp
 								break;
 
 							case TRDTSV_FRONT:
-								direction_match = IsTileType(input.tile, MP_RAILWAY) && HasSignalOnTrackdir(input.tile, input.trackdir);
+								direction_match = (IsTileType(input.tile, MP_RAILWAY) && HasSignalOnTrackdir(input.tile, input.trackdir)) || IsTileType(input.tile, MP_TUNNELBRIDGE);
 								break;
 
 							case TRDTSV_BACK:
 								direction_match = IsTileType(input.tile, MP_RAILWAY) && !HasSignalOnTrackdir(input.tile, input.trackdir);
 								break;
 
+							case TRDTSV_TUNBRIDGE_ENTER:
+								direction_match = IsTunnelBridgeSignalSimulationEntranceTile(input.tile) && TrackdirEntersTunnelBridge(input.tile, input.trackdir);
+								break;
+
+							case TRDTSV_TUNBRIDGE_EXIT:
+								direction_match = IsTunnelBridgeSignalSimulationExitTile(input.tile) && TrackdirExitsTunnelBridge(input.tile, input.trackdir);
+								break;
+
 							default:
 								NOT_REACHED();
 								break;

src/tracerestrict.h

@@ -194,6 +194,8 @@ enum TraceRestrictDirectionTypeSpecialValue {
 	TRNTSV_NW                     = 3,       ///< DIAGDIR_NW: entering at NW tile edge
 	TRDTSV_FRONT                  = 4,       ///< entering at front face of signal
 	TRDTSV_BACK                   = 5,       ///< entering at rear face of signal
+	TRDTSV_TUNBRIDGE_ENTER        = 32,      ///< signal is a tunnel/bridge entrance
+	TRDTSV_TUNBRIDGE_EXIT         = 33,      ///< signal is a tunnel/bridge exit
 };
 
 /**

src/tracerestrict_gui.cpp

@@ -263,6 +263,8 @@ static const StringID _direction_value_str[] = {
 	STR_TRACE_RESTRICT_DIRECTION_SE,
 	STR_TRACE_RESTRICT_DIRECTION_SW,
 	STR_TRACE_RESTRICT_DIRECTION_NW,
+	STR_TRACE_RESTRICT_DIRECTION_TUNBRIDGE_ENTRANCE,
+	STR_TRACE_RESTRICT_DIRECTION_TUNBRIDGE_EXIT,
 	INVALID_STRING_ID
 };
 static const uint _direction_value_val[] = {
@@ -272,6 +274,8 @@ static const uint _direction_value_val[] = {
 	TRNTSV_SE,
 	TRNTSV_SW,
 	TRNTSV_NW,
+	TRDTSV_TUNBRIDGE_ENTER,
+	TRDTSV_TUNBRIDGE_EXIT,
 };
 
 /** value drop down list for direction type strings and values */
@@ -1125,7 +1129,9 @@ static void DrawInstructionString(const TraceRestrictProgram *prog, TraceRestric
 					break;
 
 				case TRVT_DIRECTION:
-					if (GetTraceRestrictValue(item) >= TRDTSV_FRONT) {
+					if (GetTraceRestrictValue(item) >= TRDTSV_TUNBRIDGE_ENTER) {
+						instruction_string = STR_TRACE_RESTRICT_CONDITIONAL_ENTRY_SIGNAL_TYPE;
+					} else if (GetTraceRestrictValue(item) >= TRDTSV_FRONT) {
 						instruction_string = STR_TRACE_RESTRICT_CONDITIONAL_ENTRY_SIGNAL_FACE;
 					} else {
 						instruction_string = STR_TRACE_RESTRICT_CONDITIONAL_ENTRY_DIRECTION;