Function RoadVehLeaveDepot

src/roadveh_cmd.cpp:1010–1056

#include "table/roadveh_movement.h"

bool RoadVehLeaveDepot(RoadVehicle *v, bool first)
{
	/* Don't leave unless v and following wagons are in the depot. */
	for (const RoadVehicle *u = v; u != nullptr; u = u->Next()) {
		if (u->state != RVSB_IN_DEPOT || u->tile != v->tile) return false;
	}

	DiagDirection dir = GetRoadDepotDirection(v->tile);
	v->direction = DiagDirToDir(dir);

	Trackdir tdir = DiagDirToDiagTrackdir(dir);
	const RoadDriveEntry *rdp = _road_drive_data[GetRoadTramType(v->roadtype)][(_settings_game.vehicle.road_side << RVS_DRIVE_SIDE) + tdir];

	int x = TileX(v->tile) * TILE_SIZE + (rdp[RVC_DEPOT_START_FRAME].x & 0xF);
	int y = TileY(v->tile) * TILE_SIZE + (rdp[RVC_DEPOT_START_FRAME].y & 0xF);

	if (first) {
		/* We are leaving a depot, but have to go to the exact same one; re-enter */
		if (v->current_order.IsType(OT_GOTO_DEPOT) && v->tile == v->dest_tile) {
			VehicleEnterDepot(v);
			return true;
		}

		if (RoadVehFindCloseTo(v, x, y, v->direction, false) != nullptr) return true;

		VehicleServiceInDepot(v);
		v->LeaveUnbunchingDepot();

		StartRoadVehSound(v);

		/* Vehicle is about to leave a depot */
		v->cur_speed = 0;
	}

	v->vehstatus.Reset(VehState::Hidden);
	v->state = tdir;
	v->frame = RVC_DEPOT_START_FRAME;

	v->x_pos = x;
	v->y_pos = y;
	v->UpdatePosition();
	v->UpdateInclination(true, true);

	InvalidateWindowData(WC_VEHICLE_DEPOT, v->tile);

	return true;
}

static Trackdir FollowPreviousRoadVehicle(const RoadVehicle *v, const RoadVehicle *prev, TileIndex tile, DiagDirection entry_dir, bool already_reversed)
{