Block signals into blocks with junctions now default to red with realistic braking

src/saveload/afterload.cpp

@@ -65,6 +65,7 @@
 #include "../settings_func.h"
 #include "../animated_tile.h"
 #include "../company_func.h"
+#include "../infrastructure_func.h"
 
 
 #include "saveload_internal.h"
@@ -3908,6 +3909,10 @@ bool AfterLoadGame()
 		}
 	}
 
+	if (!SlXvIsFeaturePresent(XSLFI_REALISTIC_TRAIN_BRAKING, 3) && _settings_game.vehicle.train_braking_model == TBM_REALISTIC) {
+		UpdateAllBlockSignals();
+	}
+
 	if (SlXvIsFeatureMissing(XSLFI_INFLATION_FIXED_DATES)) {
 		_settings_game.economy.inflation_fixed_dates = !IsSavegameVersionBefore(SLV_GS_INDUSTRY_CONTROL);
 	}

src/saveload/extended_ver_sl.cpp

@@ -146,7 +146,7 @@ const SlxiSubChunkInfo _sl_xv_sub_chunk_infos[] = {
 	{ XSLFI_ANIMATED_TILE_EXTRA,    XSCF_NULL,                1,   1, "animated_tile_extra",       nullptr, nullptr, nullptr        },
 	{ XSLFI_NEWGRF_INFO_EXTRA,      XSCF_NULL,                1,   1, "newgrf_info_extra",         nullptr, nullptr, nullptr        },
 	{ XSLFI_INDUSTRY_CARGO_ADJ,     XSCF_IGNORABLE_UNKNOWN,   1,   1, "industry_cargo_adj",        nullptr, nullptr, nullptr        },
-	{ XSLFI_REALISTIC_TRAIN_BRAKING,XSCF_NULL,                2,   2, "realistic_train_braking",   nullptr, nullptr, "VLKA"         },
+	{ XSLFI_REALISTIC_TRAIN_BRAKING,XSCF_NULL,                3,   3, "realistic_train_braking",   nullptr, nullptr, "VLKA"         },
 	{ XSLFI_INFLATION_FIXED_DATES,  XSCF_IGNORABLE_ALL,       1,   1, "inflation_fixed_dates",     nullptr, nullptr, nullptr        },
 	{ XSLFI_WATER_FLOODING,         XSCF_NULL,                2,   2, "water_flooding",            nullptr, nullptr, nullptr        },
 	{ XSLFI_MORE_HOUSES,            XSCF_NULL,                2,   2, "more_houses",               nullptr, nullptr, nullptr        },

src/signal.cpp

@@ -274,6 +274,7 @@ enum SigFlags {
 	SF_TRAIN   = 1 << 0, ///< train found in segment
 	SF_FULL    = 1 << 1, ///< some of buffers was full, do not continue
 	SF_PBS     = 1 << 2, ///< pbs signal found
+	SF_JUNCTION= 1 << 3, ///< junction found
 };
 
 DECLARE_ENUM_AS_BIT_SET(SigFlags)
@@ -370,6 +371,8 @@ static SigInfo ExploreSegment(Owner owner)
 
 						continue;
 					}
+				} else if (!HasAtMostOneBit(tracks)) {
+					info.flags |= SF_JUNCTION;
 				}
 
 				for (DiagDirection dir = DIAGDIR_BEGIN; dir < DIAGDIR_END; dir++) { // test all possible exit directions
@@ -465,6 +468,8 @@ static SigInfo ExploreSegment(Owner owner)
 						}
 						continue;
 					}
+				} else if (!HasAtMostOneBit(tracks)) {
+					info.flags |= SF_JUNCTION;
 				}
 				if (enterdir == INVALID_DIAGDIR) { // incoming from the wormhole
 					if (!(info.flags & SF_TRAIN) && check_train_present(tunnel_bridge_dir)) info.flags |= SF_TRAIN;
@@ -519,7 +524,7 @@ static void UpdateSignalsAroundSegment(SigInfo info)
 
 	if (_settings_game.vehicle.train_braking_model == TBM_REALISTIC) {
 		if (_tbuset.Items() > 1) info.flags |= SF_PBS;
-		if (info.flags & SF_PBS) info.flags |= SF_TRAIN;
+		if (info.flags & (SF_PBS | SF_JUNCTION)) info.flags |= SF_TRAIN;
 	}
 
 	while (_tbuset.Get(&tile, &trackdir)) {