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-rw-r--r--src/train_cmd.cpp22
1 files changed, 7 insertions, 15 deletions
diff --git a/src/train_cmd.cpp b/src/train_cmd.cpp
index 763a7ed96..643828a4b 100644
--- a/src/train_cmd.cpp
+++ b/src/train_cmd.cpp
@@ -52,7 +52,7 @@
#include "table/train_cmd.h"
static bool TrainCheckIfLineEnds(Vehicle *v);
-static void TrainController(Vehicle *v, bool update_image);
+static void TrainController(Vehicle *v, Vehicle *nomove, bool update_image);
static TileIndex TrainApproachingCrossingTile(const Vehicle *v);
static const byte _vehicle_initial_x_fract[4] = {10, 8, 4, 8};
@@ -1735,17 +1735,9 @@ static void AdvanceWagons(Vehicle *v, bool before)
int differential = last->u.rail.cached_veh_length - base->u.rail.cached_veh_length;
if (before) differential *= -1;
- if (differential > 0) {
- /* disconnect last car to make sure only this subset moves */
- Vehicle *tempnext = last->Next();
- last->SetNext(NULL);
-
- /* do not update images now because the wagons are disconnected
- * and that could cause problems with NewGRFs */
- for (int i = 0; i < differential; i++) TrainController(first, false);
-
- last->SetNext(tempnext);
- }
+ /* do not update images now
+ * negative differential will are handled in the second run */
+ for (int i = 0; i < differential; i++) TrainController(first, last->Next(), false);
base = first;
first = first->Next();
@@ -2993,12 +2985,12 @@ static void *CheckVehicleAtSignal(Vehicle *v, void *data)
return NULL;
}
-static void TrainController(Vehicle *v, bool update_image)
+static void TrainController(Vehicle *v, Vehicle *nomove, bool update_image)
{
Vehicle *prev;
/* For every vehicle after and including the given vehicle */
- for (prev = v->Previous(); v != NULL; prev = v, v = v->Next()) {
+ for (prev = v->Previous(); v != nomove; prev = v, v = v->Next()) {
DiagDirection enterdir = DIAGDIR_BEGIN;
bool update_signals_crossing = false; // will we update signals or crossing state?
BeginVehicleMove(v);
@@ -3554,7 +3546,7 @@ static void TrainLocoHandler(Vehicle *v, bool mode)
TrainCheckIfLineEnds(v);
do {
- TrainController(v, true);
+ TrainController(v, NULL, true);
CheckTrainCollision(v);
if (v->cur_speed <= 0x100)
break;