waypoint_sl.cpp

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00001 /* $Id: waypoint_sl.cpp 17693 2009-10-04 17:16:41Z rubidium $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "../stdafx.h"
00013 #include "../waypoint_base.h"
00014 #include "../newgrf_station.h"
00015 #include "../vehicle_base.h"
00016 #include "../town.h"
00017 
00018 #include "table/strings.h"
00019 
00020 #include "saveload_internal.h"
00021 
00023 struct OldWaypoint {
00024   size_t index;
00025   TileIndex xy;
00026   TownID town_index;
00027   Town *town;
00028   uint16 town_cn;
00029   StringID string_id;
00030   char *name;
00031   uint8 delete_ctr;
00032   Date build_date;
00033   uint8 localidx;
00034   uint32 grfid;
00035   const StationSpec *spec;
00036   OwnerByte owner;
00037 
00038   size_t new_index;
00039 };
00040 
00042 static SmallVector<OldWaypoint, 16> _old_waypoints;
00043 
00048 static void UpdateWaypointOrder(Order *o)
00049 {
00050   if (!o->IsType(OT_GOTO_WAYPOINT)) return;
00051 
00052   for (OldWaypoint *wp = _old_waypoints.Begin(); wp != _old_waypoints.End(); wp++) {
00053     if (wp->index != o->GetDestination()) continue;
00054 
00055     o->SetDestination((DestinationID)wp->new_index);
00056     return;
00057   }
00058 }
00059 
00064 void MoveWaypointsToBaseStations()
00065 {
00066   /* In version 17, ground type is moved from m2 to m4 for depots and
00067    * waypoints to make way for storing the index in m2. The custom graphics
00068    * id which was stored in m4 is now saved as a grf/id reference in the
00069    * waypoint struct. */
00070   if (CheckSavegameVersion(17)) {
00071     for (OldWaypoint *wp = _old_waypoints.Begin(); wp != _old_waypoints.End(); wp++) {
00072       if (wp->delete_ctr == 0 && HasBit(_m[wp->xy].m3, 4)) {
00073         wp->spec = GetCustomStationSpec(STAT_CLASS_WAYP, _m[wp->xy].m4 + 1);
00074       }
00075     }
00076   } else {
00077     /* As of version 17, we recalculate the custom graphic ID of waypoints
00078      * from the GRF ID / station index. */
00079     for (OldWaypoint *wp = _old_waypoints.Begin(); wp != _old_waypoints.End(); wp++) {
00080       for (uint i = 0; i < GetNumCustomStations(STAT_CLASS_WAYP); i++) {
00081         const StationSpec *statspec = GetCustomStationSpec(STAT_CLASS_WAYP, i);
00082         if (statspec != NULL && statspec->grffile->grfid == wp->grfid && statspec->localidx == wp->localidx) {
00083           wp->spec = statspec;
00084           break;
00085         }
00086       }
00087     }
00088   }
00089 
00090   /* All saveload conversions have been done. Create the new waypoints! */
00091   for (OldWaypoint *wp = _old_waypoints.Begin(); wp != _old_waypoints.End(); wp++) {
00092     Waypoint *new_wp = new Waypoint(wp->xy);
00093     new_wp->town       = wp->town;
00094     new_wp->town_cn    = wp->town_cn;
00095     new_wp->name       = wp->name;
00096     new_wp->delete_ctr = 0; // Just reset delete counter for once.
00097     new_wp->build_date = wp->build_date;
00098     new_wp->owner      = wp->owner;
00099 
00100     new_wp->string_id = STR_SV_STNAME_WAYPOINT;
00101 
00102     TileIndex t = wp->xy;
00103     if (IsTileType(t, MP_RAILWAY) && GetRailTileType(t) == 2 /* RAIL_TILE_WAYPOINT */ && _m[t].m2 == wp->index) {
00104       /* The tile might've been reserved! */
00105       bool reserved = !CheckSavegameVersion(100) && HasBit(_m[t].m5, 4);
00106 
00107       /* The tile really has our waypoint, so reassign the map array */
00108       MakeRailWaypoint(t, GetTileOwner(t), new_wp->index, (Axis)GB(_m[t].m5, 0, 1), 0, GetRailType(t));
00109       new_wp->facilities |= FACIL_TRAIN;
00110       new_wp->owner = GetTileOwner(t);
00111 
00112       SetRailStationReservation(t, reserved);
00113 
00114       if (wp->spec != NULL) {
00115         SetCustomStationSpecIndex(t, AllocateSpecToStation(wp->spec, new_wp, true));
00116       }
00117       new_wp->rect.BeforeAddTile(t, StationRect::ADD_FORCE);
00118     }
00119 
00120     wp->new_index = new_wp->index;
00121   }
00122 
00123   /* Update the orders of vehicles */
00124   OrderList *ol;
00125   FOR_ALL_ORDER_LISTS(ol) {
00126     if (ol->GetFirstSharedVehicle()->type != VEH_TRAIN) continue;
00127 
00128     for (Order *o = ol->GetFirstOrder(); o != NULL; o = o->next) UpdateWaypointOrder(o);
00129   }
00130 
00131   Vehicle *v;
00132   FOR_ALL_VEHICLES(v) {
00133     if (v->type != VEH_TRAIN) continue;
00134 
00135     UpdateWaypointOrder(&v->current_order);
00136   }
00137 
00138   _old_waypoints.Reset();
00139 }
00140 
00141 static const SaveLoad _old_waypoint_desc[] = {
00142   SLE_CONDVAR(OldWaypoint, xy,         SLE_FILE_U16 | SLE_VAR_U32,  0, 5),
00143   SLE_CONDVAR(OldWaypoint, xy,         SLE_UINT32,                  6, SL_MAX_VERSION),
00144   SLE_CONDVAR(OldWaypoint, town_index, SLE_UINT16,                 12, 121),
00145   SLE_CONDREF(OldWaypoint, town,       REF_TOWN,                  122, SL_MAX_VERSION),
00146   SLE_CONDVAR(OldWaypoint, town_cn,    SLE_FILE_U8 | SLE_VAR_U16,  12, 88),
00147   SLE_CONDVAR(OldWaypoint, town_cn,    SLE_UINT16,                 89, SL_MAX_VERSION),
00148   SLE_CONDVAR(OldWaypoint, string_id,  SLE_STRINGID,                0, 83),
00149   SLE_CONDSTR(OldWaypoint, name,       SLE_STR, 0,                 84, SL_MAX_VERSION),
00150       SLE_VAR(OldWaypoint, delete_ctr, SLE_UINT8),
00151 
00152   SLE_CONDVAR(OldWaypoint, build_date, SLE_FILE_U16 | SLE_VAR_I32,  3, 30),
00153   SLE_CONDVAR(OldWaypoint, build_date, SLE_INT32,                  31, SL_MAX_VERSION),
00154   SLE_CONDVAR(OldWaypoint, localidx,   SLE_UINT8,                   3, SL_MAX_VERSION),
00155   SLE_CONDVAR(OldWaypoint, grfid,      SLE_UINT32,                 17, SL_MAX_VERSION),
00156   SLE_CONDVAR(OldWaypoint, owner,      SLE_UINT8,                 101, SL_MAX_VERSION),
00157 
00158   SLE_END()
00159 };
00160 
00161 static void Load_WAYP()
00162 {
00163   /* Precaution for when loading failed and it didn't get cleared */
00164   _old_waypoints.Clear();
00165 
00166   int index;
00167 
00168   while ((index = SlIterateArray()) != -1) {
00169     OldWaypoint *wp = _old_waypoints.Append();
00170     memset(wp, 0, sizeof(*wp));
00171 
00172     wp->index = index;
00173     SlObject(wp, _old_waypoint_desc);
00174   }
00175 }
00176 
00177 static void Ptrs_WAYP()
00178 {
00179   for (OldWaypoint *wp = _old_waypoints.Begin(); wp != _old_waypoints.End(); wp++) {
00180     SlObject(wp, _old_waypoint_desc);
00181 
00182     if (CheckSavegameVersion(12)) {
00183       wp->town_cn = (wp->string_id & 0xC000) == 0xC000 ? (wp->string_id >> 8) & 0x3F : 0;
00184       wp->town = ClosestTownFromTile(wp->xy, UINT_MAX);
00185     } else if (CheckSavegameVersion(122)) {
00186       /* Only for versions 12 .. 122 */
00187       wp->town = Town::Get(wp->town_index);
00188     }
00189     if (CheckSavegameVersion(84)) {
00190       wp->name = CopyFromOldName(wp->string_id);
00191     }
00192   }
00193 }
00194 
00195 extern const ChunkHandler _waypoint_chunk_handlers[] = {
00196   { 'CHKP', NULL, Load_WAYP, Ptrs_WAYP, CH_ARRAY | CH_LAST},
00197 };

Generated on Wed Dec 23 23:27:54 2009 for OpenTTD by  doxygen 1.5.6