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(svn r26646) -Fix [FS#6041]: Save locations instead of distances in link graphs to reduce size.

This commit is contained in:
fonsinchen 2014-06-14 13:35:39 +00:00
parent e8e5cdde03
commit 957f5ca117
7 changed files with 71 additions and 52 deletions
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3
src/linkgraph/demands.cpp
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@ -210,7 +210,8 @@ void DemandCalculator::CalcDemand(LinkGraphJob &job, Tscaler scaler)
/* Scale the distance by mod_dist around max_distance */
int32 distance = this->max_distance - (this->max_distance -
(int32)job[from_id][to_id].Distance()) * this->mod_dist / 100;
(int32)DistanceMaxPlusManhattan(job[from_id].XY(), job[to_id].XY())) *
this->mod_dist / 100;
/* Scale the accuracy by distance around accuracy / 2 */
int32 divisor = this->accuracy * (this->mod_dist - 50) / 100 +

30
src/linkgraph/linkgraph.cpp
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@ -21,11 +21,13 @@ INSTANTIATE_POOL_METHODS(LinkGraph)
/**
* Create a node or clear it.
* @param xy Location of the associated station.
* @param st ID of the associated station.
* @param demand Demand for cargo at the station.
*/
inline void LinkGraph::BaseNode::Init(StationID st, uint demand)
inline void LinkGraph::BaseNode::Init(TileIndex xy, StationID st, uint demand)
{
this->xy = xy;
this->supply = 0;
this->demand = demand;
this->station = st;
@ -34,11 +36,9 @@ inline void LinkGraph::BaseNode::Init(StationID st, uint demand)
/**
* Create an edge.
* @param distance Length of the link as manhattan distance.
*/
inline void LinkGraph::BaseEdge::Init(uint distance)
inline void LinkGraph::BaseEdge::Init()
{
this->distance = distance;
this->capacity = 0;
this->usage = 0;
this->last_unrestricted_update = INVALID_DATE;
@ -146,21 +146,6 @@ void LinkGraph::RemoveNode(NodeID id)
* been copied around in the loop above. */
}
/**
* Update distances between the given node and all others.
* @param id Node that changed position.
* @param xy New position of the node.
*/
void LinkGraph::UpdateDistances(NodeID id, TileIndex xy)
{
assert(id < this->Size());
for (NodeID other = 0; other < this->Size(); ++other) {
if (other == id) continue;
this->edges[id][other].distance = this->edges[other][id].distance =
DistanceMaxPlusManhattan(xy, Station::Get(this->nodes[other].station)->xy);
}
}
/**
* Add a node to the component and create empty edges associated with it. Set
* the station's last_component to this component. Calculate the distances to all
@ -180,7 +165,7 @@ NodeID LinkGraph::AddNode(const Station *st)
this->edges.Resize(new_node + 1U,
max(new_node + 1U, this->edges.Height()));
this->nodes[new_node].Init(st->index,
this->nodes[new_node].Init(st->xy, st->index,
HasBit(good.status, GoodsEntry::GES_ACCEPTANCE));
BaseEdge *new_edges = this->edges[new_node];
@ -189,9 +174,8 @@ NodeID LinkGraph::AddNode(const Station *st)
new_edges[new_node].next_edge = INVALID_NODE;
for (NodeID i = 0; i <= new_node; ++i) {
uint distance = DistanceMaxPlusManhattan(st->xy, Station::Get(this->nodes[i].station)->xy);
new_edges[i].Init(distance);
this->edges[i][new_node].Init(distance);
new_edges[i].Init();
this->edges[i][new_node].Init();
}
return new_node;
}

28
src/linkgraph/linkgraph.h
View File

@ -49,8 +49,9 @@ public:
uint supply; ///< Supply at the station.
uint demand; ///< Acceptance at the station.
StationID station; ///< Station ID.
TileIndex xy; ///< Location of the station referred to by the node.
Date last_update; ///< When the supply was last updated.
void Init(StationID st = INVALID_STATION, uint demand = 0);
void Init(TileIndex xy = INVALID_TILE, StationID st = INVALID_STATION, uint demand = 0);
};
/**
@ -60,13 +61,12 @@ public:
* the column as next_edge.
*/
struct BaseEdge {
uint distance; ///< Length of the link.
uint capacity; ///< Capacity of the link.
uint usage; ///< Usage of the link.
Date last_unrestricted_update; ///< When the unrestricted part of the link was last updated.
Date last_restricted_update; ///< When the restricted part of the link was last updated.
NodeID next_edge; ///< Destination of next valid edge starting at the same source node.
void Init(uint distance = 0);
void Init();
};
/**
@ -98,12 +98,6 @@ public:
*/
uint Usage() const { return this->edge.usage; }
/**
* Get edge's distance.
* @return Distance.
*/
uint Distance() const { return this->edge.distance; }
/**
* Get the date of the last update to the edge's unrestricted capacity.
* @return Last update.
@ -169,6 +163,12 @@ public:
* @return Last update.
*/
Date LastUpdate() const { return this->node.last_update; }
/**
* Get the location of the station associated with the node.
* @return Location of the station.
*/
TileIndex XY() const { return this->node.xy; }
};
/**
@ -412,6 +412,15 @@ public:
this->node.last_update = _date;
}
/**
* Update the node's location on the map.
* @param xy New location.
*/
void UpdateLocation(TileIndex xy)
{
this->node.xy = xy;
}
/**
* Set the node's demand.
* @param demand New demand for the node.
@ -513,7 +522,6 @@ public:
NodeID AddNode(const Station *st);
void RemoveNode(NodeID id);
void UpdateDistances(NodeID id, TileIndex xy);
protected:
friend class LinkGraph::ConstNode;

3
src/linkgraph/mcf.cpp
View File

@ -259,7 +259,6 @@ void MultiCommodityFlow::Dijkstra(NodeID source_node, PathVector &paths)
for (NodeID to = iter.Next(); to != INVALID_NODE; to = iter.Next()) {
if (to == from) continue; // Not a real edge but a consumption sign.
Edge edge = this->job[from][to];
assert(edge.Distance() < UINT_MAX);
uint capacity = edge.Capacity();
if (this->max_saturation != UINT_MAX) {
capacity *= this->max_saturation;
@ -267,7 +266,7 @@ void MultiCommodityFlow::Dijkstra(NodeID source_node, PathVector &paths)
if (capacity == 0) capacity = 1;
}
/* punish in-between stops a little */
uint distance = edge.Distance() + 1;
uint distance = DistanceMaxPlusManhattan(this->job[from].XY(), this->job[to].XY()) + 1;
Tannotation *dest = static_cast<Tannotation *>(paths[to]);
if (dest->IsBetter(source, capacity, capacity - edge.Flow(), distance)) {
annos.erase(dest);

54
src/saveload/linkgraph_sl.cpp
View File

@ -109,24 +109,25 @@ const SaveLoad *GetLinkGraphScheduleDesc()
* SaveLoad desc for a link graph node.
*/
static const SaveLoad _node_desc[] = {
SLE_VAR(Node, supply, SLE_UINT32),
SLE_VAR(Node, demand, SLE_UINT32),
SLE_VAR(Node, station, SLE_UINT16),
SLE_VAR(Node, last_update, SLE_INT32),
SLE_END()
SLE_CONDVAR(Node, xy, SLE_UINT32, 191, SL_MAX_VERSION),
SLE_VAR(Node, supply, SLE_UINT32),
SLE_VAR(Node, demand, SLE_UINT32),
SLE_VAR(Node, station, SLE_UINT16),
SLE_VAR(Node, last_update, SLE_INT32),
SLE_END()
};
/**
* SaveLoad desc for a link graph edge.
*/
static const SaveLoad _edge_desc[] = {
SLE_VAR(Edge, distance, SLE_UINT32),
SLE_VAR(Edge, capacity, SLE_UINT32),
SLE_VAR(Edge, usage, SLE_UINT32),
SLE_VAR(Edge, last_unrestricted_update, SLE_INT32),
SLE_CONDVAR(Edge, last_restricted_update, SLE_INT32, 187, SL_MAX_VERSION),
SLE_VAR(Edge, next_edge, SLE_UINT16),
SLE_END()
SLE_CONDNULL(4, 0, 190), // distance
SLE_VAR(Edge, capacity, SLE_UINT32),
SLE_VAR(Edge, usage, SLE_UINT32),
SLE_VAR(Edge, last_unrestricted_update, SLE_INT32),
SLE_CONDVAR(Edge, last_restricted_update, SLE_INT32, 187, SL_MAX_VERSION),
SLE_VAR(Edge, next_edge, SLE_UINT16),
SLE_END()
};
/**
@ -139,8 +140,16 @@ void SaveLoad_LinkGraph(LinkGraph &lg)
for (NodeID from = 0; from < size; ++from) {
Node *node = &lg.nodes[from];
SlObject(node, _node_desc);
for (NodeID to = 0; to < size; ++to) {
SlObject(&lg.edges[from][to], _edge_desc);
if (IsSavegameVersionBefore(191)) {
/* We used to save the full matrix ... */
for (NodeID to = 0; to < size; ++to) {
SlObject(&lg.edges[from][to], _edge_desc);
}
} else {
/* ... but as that wasted a lot of space we save a sparse matrix now. */
for (NodeID to = from; to != INVALID_NODE; to = lg.edges[from][to].next_edge) {
SlObject(&lg.edges[from][to], _edge_desc);
}
}
}
}
@ -220,6 +229,23 @@ static void Load_LGRS()
*/
void AfterLoadLinkGraphs()
{
if (IsSavegameVersionBefore(191)) {
LinkGraph *lg;
FOR_ALL_LINK_GRAPHS(lg) {
for (NodeID node_id = 0; node_id < lg->Size(); ++node_id) {
(*lg)[node_id].UpdateLocation(Station::Get((*lg)[node_id].Station())->xy);
}
}
LinkGraphJob *lgj;
FOR_ALL_LINK_GRAPH_JOBS(lgj) {
lg = &(const_cast<LinkGraph &>(lgj->Graph()));
for (NodeID node_id = 0; node_id < lg->Size(); ++node_id) {
(*lg)[node_id].UpdateLocation(Station::Get((*lg)[node_id].Station())->xy);
}
}
}
LinkGraphSchedule::Instance()->SpawnAll();
}

3
src/saveload/saveload.cpp
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@ -258,8 +258,9 @@
* 188 26169 1.4.x
* 189 26450
* 190 26547
* 191 26646
*/
extern const uint16 SAVEGAME_VERSION = 190; ///< Current savegame version of OpenTTD.
extern const uint16 SAVEGAME_VERSION = 191; ///< Current savegame version of OpenTTD.
SavegameType _savegame_type; ///< type of savegame we are loading

2
src/station_cmd.cpp
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@ -649,7 +649,7 @@ static void UpdateStationSignCoord(BaseStation *st)
for (CargoID c = 0; c < NUM_CARGO; ++c) {
LinkGraphID lg = full_station->goods[c].link_graph;
if (!LinkGraph::IsValidID(lg)) continue;
LinkGraph::Get(lg)->UpdateDistances(full_station->goods[c].node, st->xy);
(*LinkGraph::Get(lg))[full_station->goods[c].node].UpdateLocation(st->xy);
}
}