199 lines
6.5 KiB
C++
199 lines
6.5 KiB
C++
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file waypoint_sl.cpp Code handling saving and loading of waypoints */
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#include "../stdafx.h"
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#include "../waypoint_base.h"
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#include "../newgrf_station.h"
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#include "../vehicle_base.h"
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#include "../town.h"
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#include "../newgrf.h"
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#include "table/strings.h"
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#include "saveload_internal.h"
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/** Helper structure to convert from the old waypoint system. */
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struct OldWaypoint {
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size_t index;
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TileIndex xy;
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TownID town_index;
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Town *town;
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uint16 town_cn;
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StringID string_id;
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char *name;
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uint8 delete_ctr;
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Date build_date;
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uint8 localidx;
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uint32 grfid;
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const StationSpec *spec;
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OwnerByte owner;
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size_t new_index;
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};
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/** Temporary array with old waypoints. */
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static SmallVector<OldWaypoint, 16> _old_waypoints;
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/**
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* Update the waypoint orders to get the new waypoint ID.
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* @param o the order 'list' to check.
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*/
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static void UpdateWaypointOrder(Order *o)
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{
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if (!o->IsType(OT_GOTO_WAYPOINT)) return;
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for (OldWaypoint *wp = _old_waypoints.Begin(); wp != _old_waypoints.End(); wp++) {
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if (wp->index != o->GetDestination()) continue;
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o->SetDestination((DestinationID)wp->new_index);
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return;
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}
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}
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/**
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* Perform all steps to upgrade from the old waypoints to the new version
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* that uses station. This includes some old saveload mechanics.
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*/
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void MoveWaypointsToBaseStations()
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{
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/* In version 17, ground type is moved from m2 to m4 for depots and
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* waypoints to make way for storing the index in m2. The custom graphics
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* id which was stored in m4 is now saved as a grf/id reference in the
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* waypoint struct. */
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if (CheckSavegameVersion(17)) {
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for (OldWaypoint *wp = _old_waypoints.Begin(); wp != _old_waypoints.End(); wp++) {
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if (wp->delete_ctr == 0 && HasBit(_m[wp->xy].m3, 4)) {
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wp->spec = GetCustomStationSpec(STAT_CLASS_WAYP, _m[wp->xy].m4 + 1);
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}
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}
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} else {
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/* As of version 17, we recalculate the custom graphic ID of waypoints
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* from the GRF ID / station index. */
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for (OldWaypoint *wp = _old_waypoints.Begin(); wp != _old_waypoints.End(); wp++) {
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for (uint i = 0; i < GetNumCustomStations(STAT_CLASS_WAYP); i++) {
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const StationSpec *statspec = GetCustomStationSpec(STAT_CLASS_WAYP, i);
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if (statspec != NULL && statspec->grffile->grfid == wp->grfid && statspec->localidx == wp->localidx) {
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wp->spec = statspec;
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break;
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}
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}
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}
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}
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/* All saveload conversions have been done. Create the new waypoints! */
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for (OldWaypoint *wp = _old_waypoints.Begin(); wp != _old_waypoints.End(); wp++) {
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Waypoint *new_wp = new Waypoint(wp->xy);
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new_wp->town = wp->town;
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new_wp->town_cn = wp->town_cn;
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new_wp->name = wp->name;
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new_wp->delete_ctr = 0; // Just reset delete counter for once.
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new_wp->build_date = wp->build_date;
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new_wp->owner = wp->owner;
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new_wp->string_id = STR_SV_STNAME_WAYPOINT;
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TileIndex t = wp->xy;
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if (IsTileType(t, MP_RAILWAY) && GetRailTileType(t) == 2 /* RAIL_TILE_WAYPOINT */ && _m[t].m2 == wp->index) {
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/* The tile might've been reserved! */
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bool reserved = !CheckSavegameVersion(100) && HasBit(_m[t].m5, 4);
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/* The tile really has our waypoint, so reassign the map array */
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MakeRailWaypoint(t, GetTileOwner(t), new_wp->index, (Axis)GB(_m[t].m5, 0, 1), 0, GetRailType(t));
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new_wp->facilities |= FACIL_TRAIN;
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new_wp->owner = GetTileOwner(t);
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SetRailStationReservation(t, reserved);
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if (wp->spec != NULL) {
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SetCustomStationSpecIndex(t, AllocateSpecToStation(wp->spec, new_wp, true));
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}
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new_wp->rect.BeforeAddTile(t, StationRect::ADD_FORCE);
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}
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wp->new_index = new_wp->index;
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}
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/* Update the orders of vehicles */
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OrderList *ol;
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FOR_ALL_ORDER_LISTS(ol) {
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if (ol->GetFirstSharedVehicle()->type != VEH_TRAIN) continue;
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for (Order *o = ol->GetFirstOrder(); o != NULL; o = o->next) UpdateWaypointOrder(o);
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}
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Vehicle *v;
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FOR_ALL_VEHICLES(v) {
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if (v->type != VEH_TRAIN) continue;
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UpdateWaypointOrder(&v->current_order);
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}
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_old_waypoints.Reset();
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}
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static const SaveLoad _old_waypoint_desc[] = {
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SLE_CONDVAR(OldWaypoint, xy, SLE_FILE_U16 | SLE_VAR_U32, 0, 5),
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SLE_CONDVAR(OldWaypoint, xy, SLE_UINT32, 6, SL_MAX_VERSION),
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SLE_CONDVAR(OldWaypoint, town_index, SLE_UINT16, 12, 121),
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SLE_CONDREF(OldWaypoint, town, REF_TOWN, 122, SL_MAX_VERSION),
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SLE_CONDVAR(OldWaypoint, town_cn, SLE_FILE_U8 | SLE_VAR_U16, 12, 88),
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SLE_CONDVAR(OldWaypoint, town_cn, SLE_UINT16, 89, SL_MAX_VERSION),
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SLE_CONDVAR(OldWaypoint, string_id, SLE_STRINGID, 0, 83),
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SLE_CONDSTR(OldWaypoint, name, SLE_STR, 0, 84, SL_MAX_VERSION),
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SLE_VAR(OldWaypoint, delete_ctr, SLE_UINT8),
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SLE_CONDVAR(OldWaypoint, build_date, SLE_FILE_U16 | SLE_VAR_I32, 3, 30),
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SLE_CONDVAR(OldWaypoint, build_date, SLE_INT32, 31, SL_MAX_VERSION),
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SLE_CONDVAR(OldWaypoint, localidx, SLE_UINT8, 3, SL_MAX_VERSION),
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SLE_CONDVAR(OldWaypoint, grfid, SLE_UINT32, 17, SL_MAX_VERSION),
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SLE_CONDVAR(OldWaypoint, owner, SLE_UINT8, 101, SL_MAX_VERSION),
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SLE_END()
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};
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static void Load_WAYP()
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{
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/* Precaution for when loading failed and it didn't get cleared */
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_old_waypoints.Clear();
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int index;
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while ((index = SlIterateArray()) != -1) {
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OldWaypoint *wp = _old_waypoints.Append();
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memset(wp, 0, sizeof(*wp));
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wp->index = index;
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SlObject(wp, _old_waypoint_desc);
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}
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}
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static void Ptrs_WAYP()
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{
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for (OldWaypoint *wp = _old_waypoints.Begin(); wp != _old_waypoints.End(); wp++) {
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SlObject(wp, _old_waypoint_desc);
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if (CheckSavegameVersion(12)) {
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wp->town_cn = (wp->string_id & 0xC000) == 0xC000 ? (wp->string_id >> 8) & 0x3F : 0;
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wp->town = ClosestTownFromTile(wp->xy, UINT_MAX);
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} else if (CheckSavegameVersion(122)) {
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/* Only for versions 12 .. 122 */
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wp->town = Town::Get(wp->town_index);
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}
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if (CheckSavegameVersion(84)) {
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wp->name = CopyFromOldName(wp->string_id);
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}
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}
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}
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extern const ChunkHandler _waypoint_chunk_handlers[] = {
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{ 'CHKP', NULL, Load_WAYP, Ptrs_WAYP, CH_ARRAY | CH_LAST},
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};
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