Network: Add state checksum which is check in network sync

src/train_cmd.cpp

@@ -43,6 +43,7 @@
 #include "engine_func.h"
 #include "bridge_signal_map.h"
 #include "scope_info.h"
+#include "core/checksum_func.hpp"
 
 #include "table/strings.h"
 #include "table/train_cmd.h"
@@ -3127,6 +3128,7 @@ static Track ChooseTrainTrack(Train *v, TileIndex tile, DiagDirection enterdir,
 		TileIndex new_tile = res_dest.tile;
 
 		Track next_track = DoTrainPathfind(v, new_tile, dest_enterdir, tracks, path_found, do_track_reservation, &res_dest);
+		UpdateStateChecksum((((uint64) v->index) << 32) | (path_found << 16) | next_track);
 		if (new_tile == tile) best_track = next_track;
 		v->HandlePathfindingResult(path_found);
 	}
@@ -4971,6 +4973,7 @@ Money Train::GetRunningCost() const
  */
 bool Train::Tick()
 {
+	UpdateStateChecksum((((uint64) this->x_pos) << 32) | (this->y_pos << 16) | this->track );
 	if (this->IsFrontEngine()) {
 		if (!(this->vehstatus & VS_STOPPED) || this->cur_speed > 0) this->running_ticks++;