#include "route.h"
#include "simplecontroller.h"
#include "timetable.h"
+#include "trackiter.h"
#include "tracktype.h"
#include "train.h"
#include "vehicle.h"
address(a),
priority(0),
yielding_to(0),
+ cur_blocks_end(blocks.end()),
+ clear_blocks_end(blocks.end()),
pending_block(0),
reserving(false),
advancing(false),
speed_changing(false),
reverse(false),
functions(0),
- route(0),
- next_route(0),
end_of_route(false),
status("Unplaced"),
travel_dist(0),
layout.signal_block_reserved.connect(sigc::mem_fun(this, &Train::block_reserved));
layout.get_driver().signal_sensor.connect(sigc::mem_fun(this, &Train::sensor_event));
- layout.get_driver().signal_turnout.connect(sigc::mem_fun(this, &Train::turnout_event));
layout.get_driver().signal_halt.connect(sigc::mem_fun(this, &Train::halt_event));
+ const set<Track *> &tracks = layout.get_tracks();
+ for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
+ if((*i)->get_turnout_id())
+ (*i)->signal_path_changed.connect(sigc::hide(sigc::bind(sigc::mem_fun(this, &Train::turnout_path_changed), sigc::ref(**i))));
+
controller->signal_control_changed.connect(sigc::mem_fun(this, &Train::control_changed));
}
timetable = tt;
}
-void Train::set_route(const Route *r)
+bool Train::set_route(const Route *r)
{
- if(!rsv_blocks.empty())
- {
- for(list<BlockRef>::iterator i=rsv_blocks.begin(); i!=rsv_blocks.end(); ++i)
- if(i->block->get_sensor_id())
- {
- release_blocks(rsv_blocks, ++i, rsv_blocks.end());
- break;
- }
- }
-
- route = r;
- next_route = 0;
- end_of_route = false;
+ free_noncritical_blocks();
- if(route && !cur_blocks.empty())
+ Route *lead = 0;
+ if(r && !blocks.empty())
{
- BlockRef &last = (rsv_blocks.empty() ? cur_blocks.back() : rsv_blocks.back());
- BlockRef next = last.next();
- const Block::Endpoint &ep = next.block->get_endpoints()[next.entry];
- if(!route->get_tracks().count(ep.track))
+ TrackIter first = blocks.front().track_iter();
+ TrackIter next = blocks.back().next().track_iter();
+ if(!r->has_track(*next))
{
- next_route = route;
- route = Route::find(*ep.track, ep.track_ep, *next_route);
+ lead = Route::find(next, *r);
+ if(!lead)
+ return false;
+ create_lead_route(lead, lead);
+ routes.push_front(lead);
}
+ else if(!r->has_track(*first))
+ lead = create_lead_route(0, r);
}
+ routes.clear();
+ if(lead)
+ routes.push_back(lead);
+ if(r)
+ routes.push_back(r);
+ end_of_route = false;
+
reserve_more();
- signal_route_changed.emit(route);
+ signal_route_changed.emit(get_route());
+
+ return true;
}
-void Train::go_to(const Track &to)
+bool Train::go_to(Track &to)
{
- for(list<BlockRef>::const_iterator i=cur_blocks.begin(); i!=cur_blocks.end(); ++i)
- if(i->block->get_tracks().count(const_cast<Track *>(&to)))
+ for(BlockList::const_iterator i=blocks.begin(); i!=cur_blocks_end; ++i)
+ if((*i)->has_track(to))
{
signal_arrived.emit();
- set_route(0);
- return;
+ return set_route(0);
+ }
+
+ free_noncritical_blocks();
+
+ TrackIter next = blocks.back().next().track_iter();
+
+ Route *route = Route::find(next, to);
+ if(!route)
+ return false;
+ create_lead_route(route, route);
+ return set_route(route);
+}
+
+bool Train::divert(Track &from)
+{
+ if(!from.get_turnout_id())
+ throw InvalidParameterValue("Can't divert from a non-turnout");
+ if(routes.empty())
+ return false;
+
+ unsigned path = 0;
+ unsigned entry = 0;
+ list<RouteRef>::iterator route = routes.begin();
+
+ // Follow our routes to find out where we're entering the turnout
+ for(TrackLoopIter track = blocks.front().track_iter();;)
+ {
+ if(!advance_route(route, *track))
+ return false;
+
+ if(&*track==&from)
+ {
+ Block &block = track->get_block();
+ if(block.get_train()==this && !free_block(block))
+ return false;
+
+ int route_path = route->route->get_turnout(from.get_turnout_id());
+
+ // Check that more than one path is available
+ unsigned ep_paths = track.endpoint().paths;
+ if(!(ep_paths&(ep_paths-1)))
+ return false;
+
+ // Choose some other path
+ for(int i=0; ep_paths>>i; ++i)
+ if((ep_paths&(1<<i)) && i!=route_path)
+ {
+ path = i;
+ break;
+ }
+
+ entry = track.entry();
+ break;
}
- BlockRef *last = 0;
- if(rsv_blocks.empty())
- last = &cur_blocks.back();
+ track = track.next(route->route->get_path(*track));
+
+ if(!track || track.looped())
+ return false;
+ }
+
+ TrackIter track = TrackIter(&from, entry).next(path);
+ if(!track)
+ return false;
+
+ set<Track *> tracks;
+ for(list<RouteRef>::iterator i=routes.begin(); i!=routes.end(); ++i)
+ tracks.insert(i->route->get_tracks().begin(), i->route->get_tracks().end());
+ RefPtr<Route> diversion = Route::find(track, tracks);
+ if(!diversion)
+ return false;
+
+ diversion->set_name("Diversion");
+ diversion->add_track(from);
+ diversion->set_turnout(from.get_turnout_id(), path);
+
+ if(!is_valid_diversion(*diversion, TrackIter(&from, entry)))
+ return false;
+
+ // Follow the diversion route until we get back to the original route
+ list<RouteRef>::iterator end = routes.end();
+ while(1)
+ {
+ for(list<RouteRef>::iterator i=route; (end==routes.end() && i!=routes.end()); ++i)
+ if(i->route->has_track(*track))
+ end = i;
+
+ if(end!=routes.end())
+ break;
+ else if(!diversion->has_track(*track))
+ throw LogicError("Pathfinder returned a bad route");
+
+ track = track.next(diversion->get_path(*track));
+ }
+
+ if(route==end)
+ // We are rejoining the same route we diverted from, duplicate it
+ routes.insert(end, *route);
else
{
- for(list<BlockRef>::iterator i=rsv_blocks.begin(); (i!=rsv_blocks.end() && !last); ++i)
- if(i->block->get_sensor_id())
- last = &*i;
+ ++route;
+ routes.erase(route, end);
}
+ routes.insert(end, RouteRef(diversion.release(), from.get_turnout_id()));
- BlockRef next = last->next();
- const Block::Endpoint &ep = next.block->get_endpoints()[next.entry];
+ return true;
+}
- set_route(Route::find(*ep.track, ep.track_ep, to));
+const Route *Train::get_route() const
+{
+ if(routes.empty())
+ return 0;
+ return routes.front().route;
}
void Train::place(Block &block, unsigned entry)
if(controller->get_speed())
throw InvalidState("Must be stopped before placing");
- release_blocks(rsv_blocks);
- release_blocks(cur_blocks);
+ release_blocks();
set_active(false);
accurate_position = false;
return;
}
- cur_blocks.push_back(BlockRef(&block, entry));
+ blocks.push_back(BlockIter(&block, entry));
if(reverse)
{
- unsigned exit = block.traverse(entry);
- const Block::Endpoint &bep = block.get_endpoints()[exit];
- Track *track = bep.track->get_link(bep.track_ep);
- unsigned ep = track->get_endpoint_by_link(*bep.track);
- vehicles.front()->place(track, ep, 0, Vehicle::FRONT_BUFFER);
+ TrackIter track = BlockIter(&block, entry).reverse().track_iter();
+ vehicles.front()->place(*track, track.entry(), 0, Vehicle::FRONT_BUFFER);
}
else
{
- const Block::Endpoint &bep = block.get_endpoints()[entry];
- vehicles.back()->place(bep.track, bep.track_ep, 0, Vehicle::BACK_BUFFER);
+ const Block::Endpoint &bep = block.get_endpoint(entry);
+ vehicles.back()->place(*bep.track, bep.track_ep, 0, Vehicle::BACK_BUFFER);
}
}
+void Train::unplace()
+{
+ if(controller->get_speed())
+ throw InvalidState("Must be stopped before unplacing");
+
+ release_blocks();
+
+ set_active(false);
+ accurate_position = false;
+
+ for(vector<Vehicle *>::iterator i=vehicles.begin(); i!=vehicles.end(); ++i)
+ (*i)->unplace();
+
+ set_status("Unplaced");
+}
+
bool Train::free_block(Block &block)
{
+ float margin = 10*layout.get_catalogue().get_scale();
+ if(get_reserved_distance_until(&block, false)<controller->get_braking_distance()*1.3+margin)
+ return false;
+
unsigned nsens = 0;
- for(list<BlockRef>::iterator i=rsv_blocks.begin(); i!=rsv_blocks.end(); ++i)
+ for(BlockList::iterator i=cur_blocks_end; i!=blocks.end(); ++i)
{
- if(i->block==&block)
+ if(i->block()==&block)
{
if(nsens<1)
return false;
- release_blocks(rsv_blocks, i, rsv_blocks.end());
+ release_blocks(i, blocks.end());
return true;
}
- else if(i->block->get_sensor_id())
+ else if((*i)->get_sensor_id())
++nsens;
}
return false;
}
-int Train::get_entry_to_block(Block &block) const
+void Train::free_noncritical_blocks()
{
- for(list<BlockRef>::const_iterator i=cur_blocks.begin(); i!=cur_blocks.end(); ++i)
- if(i->block==&block)
- return i->entry;
- for(list<BlockRef>::const_iterator i=rsv_blocks.begin(); i!=rsv_blocks.end(); ++i)
- if(i->block==&block)
- return i->entry;
- return -1;
-}
+ if(blocks.empty())
+ return;
-float Train::get_reserved_distance() const
-{
- if(cur_blocks.empty())
- return 0;
+ if(controller->get_speed()==0)
+ {
+ release_blocks(cur_blocks_end, blocks.end());
+ return;
+ }
- Vehicle &veh = *(reverse ? vehicles.back() : vehicles.front());
- const VehicleType &vtype = veh.get_type();
+ float margin = 10*layout.get_catalogue().get_scale();
+ float min_dist = controller->get_braking_distance()*1.3+margin;
- Track *track = veh.get_track();
- if(!track)
- return 0;
- unsigned entry = veh.get_entry();
+ Vehicle &veh = *(reverse ? vehicles.back() : vehicles.front());
- float result = -vtype.get_length()/2;
- if(reverse)
+ TrackIter track(veh.get_track(), veh.get_entry());
+ BlockList::iterator block = blocks.begin();
+ bool in_rsv = false;
+ while(block!=blocks.end() && !(*block)->has_track(*track))
{
- entry = track->traverse(entry);
- result += veh.get_offset();
+ ++block;
+ if(block==cur_blocks_end)
+ in_rsv = true;
}
+
+ float dist = veh.get_offset();
+ if(reverse)
+ track.reverse();
else
- result -= veh.get_offset();
+ dist = track->get_type().get_path_length(track->get_active_path())-dist;
+ dist -= veh.get_type().get_length()/2;
- bool first = true;
- list<BlockRef>::const_iterator block = cur_blocks.begin();
+ bool nsens = 0;
while(1)
{
- if(!first || !reverse)
- result += track->get_type().get_path_length(track->get_active_path());
- first = false;
+ track = track.next();
- if(track->get_type().get_endpoints().size()<2)
- return result;
-
- unsigned exit = track->traverse(entry);
- Track *next = track->get_link(exit);
-
- while(!block->block->get_tracks().count(next))
+ if(!(*block)->has_track(*track))
{
++block;
- if(block==cur_blocks.end())
- block = rsv_blocks.begin();
- if(block==rsv_blocks.end())
- return result;
+ if(block==cur_blocks_end)
+ in_rsv = true;
+ if(block==blocks.end())
+ return;
+
+ if(dist>min_dist && nsens>0)
+ {
+ release_blocks(block, blocks.end());
+ return;
+ }
+
+ if(in_rsv && (*block)->get_sensor_id())
+ ++nsens;
}
- entry = next->get_endpoint_by_link(*track);
- track = next;
+ dist += track->get_type().get_path_length(track->get_active_path());
}
}
+int Train::get_entry_to_block(Block &block) const
+{
+ for(BlockList::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
+ if(i->block()==&block)
+ return i->entry();
+ return -1;
+}
+
+float Train::get_reserved_distance() const
+{
+ return get_reserved_distance_until(0, false);
+}
+
void Train::tick(const Time::TimeStamp &t, const Time::TimeDelta &dt)
{
if(!active && stop_timeout && t>=stop_timeout)
{
- release_blocks(rsv_blocks);
- end_of_route = false;
+ release_blocks(cur_blocks_end, blocks.end());
stop_timeout = Time::TimeStamp();
}
reverse = controller->get_reverse();
driver.set_loco_reverse(address, reverse);
- release_blocks(rsv_blocks);
- reverse_blocks(cur_blocks);
+ release_blocks(cur_blocks_end, blocks.end());
+ reverse_blocks(blocks);
reserve_more();
}
Track *track = vehicle.get_track();
bool ok = false;
- for(list<BlockRef>::const_iterator i=cur_blocks.begin(); (!ok && i!=cur_blocks.end()); ++i)
- ok = i->block->get_tracks().count(track);
+ for(BlockList::const_iterator i=blocks.begin(); (!ok && i!=cur_blocks_end); ++i)
+ ok = (*i)->has_track(*track);
float d = get_real_speed(current_speed)*(dt/Time::sec);
if(ok)
}
}
}
- else if(end_of_route && rsv_blocks.empty())
+ else if(end_of_route && cur_blocks_end==blocks.end())
{
+ set_active(false);
signal_arrived.emit();
set_route(0);
}
- if(!cur_blocks.empty() && !cur_blocks.front().block->get_sensor_id())
+ if(!blocks.empty() && !blocks.front()->get_sensor_id())
{
- Vehicle &veh = *(reverse ? vehicles.front() : vehicles.back());
-
- list<BlockRef>::iterator i = cur_blocks.begin();
- const Block::Endpoint &bep = i->block->get_endpoints()[i->entry];
-
- Track *track = bep.track;
- unsigned entry = bep.track_ep;
-
- bool found = false;
- float dist = veh.get_offset();
- if(reverse)
- dist = veh.get_track()->get_type().get_path_length(veh.get_track()->get_active_path())-dist;
- dist -= veh.get_type().get_length()/2;
- while(1)
- {
- if(track==veh.get_track())
- {
- found = true;
- break;
- }
-
- if(i!=cur_blocks.begin())
- {
- float path_len = track->get_type().get_path_length(track->get_active_path());
- dist += path_len;
- }
+ float dist = get_reserved_distance_until(&*blocks.front(), true);
- unsigned exit = track->traverse(entry);
- Track *next = track->get_link(exit);
- entry = next->get_endpoint_by_link(*track);
- track = next;
-
- if(!i->block->get_tracks().count(track))
- {
- ++i;
- if(i==cur_blocks.end())
- break;
- }
- }
-
- if(found && i!=cur_blocks.begin() && dist>10*layout.get_catalogue().get_scale())
+ if(dist>10*layout.get_catalogue().get_scale())
{
- cur_blocks.front().block->reserve(0);
- cur_blocks.erase(cur_blocks.begin());
+ blocks.front()->reserve(0);
+ blocks.pop_front();
}
}
}
if(real_speed[i].weight)
st.push_back((DataFile::Statement("real_speed"), i, real_speed[i].speed, real_speed[i].weight));
- if(!cur_blocks.empty())
+ if(!blocks.empty() && cur_blocks_end!=blocks.begin())
{
- list<BlockRef> blocks = cur_blocks;
+ BlockList blks(blocks.begin(), BlockList::const_iterator(cur_blocks_end));
if(reverse)
- reverse_blocks(blocks);
+ reverse_blocks(blks);
- Block *prev = blocks.front().block->get_endpoints()[blocks.front().entry].link;
+ BlockIter prev = blks.front().flip();
st.push_back((DataFile::Statement("block_hint"), prev->get_id()));
- for(list<BlockRef>::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
- st.push_back((DataFile::Statement("block"), i->block->get_id()));
+ for(BlockList::const_iterator i=blks.begin(); i!=blks.end(); ++i)
+ st.push_back((DataFile::Statement("block"), (*i)->get_id()));
}
- if(route)
+ if(!routes.empty())
{
- if(!route->is_temporary())
- st.push_back((DataFile::Statement("route"), route->get_name()));
- else if(next_route && !next_route->is_temporary())
- st.push_back((DataFile::Statement("route"), next_route->get_name()));
+ list<RouteRef>::const_iterator i = routes.begin();
+ for(; (i!=routes.end() && i->route->is_temporary()); ++i) ;
+ if(i!=routes.end())
+ st.push_back((DataFile::Statement("route"), i->route->get_name()));
}
if(timetable)
if(state)
{
// Find the first sensor block from our reserved blocks that isn't this sensor
- list<BlockRef>::iterator i;
+ BlockList::iterator end;
unsigned result = 0;
- for(i=rsv_blocks.begin(); i!=rsv_blocks.end(); ++i)
- if(i->block->get_sensor_id())
+ for(end=cur_blocks_end; end!=blocks.end(); ++end)
+ if((*end)->get_sensor_id())
{
- if(i->block->get_sensor_id()!=addr)
+ if((*end)->get_sensor_id()!=addr)
{
if(result==0)
result = 2;
result = 3;
}
- if(result==1 && i!=rsv_blocks.begin())
+ if(result==1)
{
// Compute speed and update related state
float travel_time_secs = (Time::now()-last_entry_time)/Time::sec;
}
travel_dist = 0;
- float block_len;
- for(list<BlockRef>::iterator j=rsv_blocks.begin(); j!=i; ++j)
+ for(BlockList::iterator j=cur_blocks_end; j!=end; ++j)
{
- j->block->traverse(j->entry, &block_len);
- travel_dist += block_len;
+ travel_dist += (*j)->get_path_length(j->entry());
- if(j->block->get_sensor_id()==addr && !advancing)
+ if((*j)->get_sensor_id()==addr && !advancing)
{
- const Block::Endpoint &bep = j->block->get_endpoints()[j->entry];
+ TrackIter track = j->track_iter();
if(reverse)
{
- Track *track = bep.track->get_link(bep.track_ep);
- unsigned ep = track->get_endpoint_by_link(*bep.track);
- vehicles.back()->place(track, ep, 0, Vehicle::BACK_AXLE);
+ track = track.flip();
+ vehicles.back()->place(*track, track.entry(), 0, Vehicle::BACK_AXLE);
}
else
- vehicles.front()->place(bep.track, bep.track_ep, 0, Vehicle::FRONT_AXLE);
+ vehicles.front()->place(*track, track.entry(), 0, Vehicle::FRONT_AXLE);
}
}
last_entry_time = Time::now();
overshoot_dist = 0;
// Check if we've reached the next route
- if(next_route)
+ if(routes.size()>1)
{
- const set<const Track *> &rtracks = next_route->get_tracks();
- for(list<BlockRef>::iterator j=rsv_blocks.begin(); j!=i; ++j)
- if(rtracks.count(j->block->get_endpoints()[j->entry].track))
+ const Route &route = *(++routes.begin())->route;
+ for(BlockList::iterator j=cur_blocks_end; j!=end; ++j)
+ if(route.has_track(*j->track_iter()))
{
- route = next_route;
- next_route = 0;
+ routes.pop_front();
// XXX Exceptions?
- signal_route_changed.emit(route);
+ signal_route_changed.emit(routes.front().route);
break;
}
}
// Move blocks up to the next sensor to our current blocks
- cur_blocks.splice(cur_blocks.end(), rsv_blocks, rsv_blocks.begin(), i);
+ cur_blocks_end = end;
// Try to get more blocks if we're moving
if(active)
}
else
{
+ const Vehicle &veh = *(reverse ? vehicles.front() : vehicles.back());
+
// Find the first sensor in our current blocks that's still active
- list<BlockRef>::iterator end = cur_blocks.begin();
- for(list<BlockRef>::iterator i=cur_blocks.begin(); i!=cur_blocks.end(); ++i)
- if(i->block->get_sensor_id())
+ BlockList::iterator end = blocks.begin();
+ for(BlockList::iterator i=blocks.begin(); i!=cur_blocks_end; ++i)
+ {
+ if((*i)->has_track(*veh.get_track()))
+ break;
+ if((*i)->get_sensor_id())
{
- if(layout.get_driver().get_sensor(i->block->get_sensor_id()))
+ if(layout.get_driver().get_sensor((*i)->get_sensor_id()))
break;
else
{
++end;
}
}
+ }
- if(end!=cur_blocks.begin() && end!=cur_blocks.end())
+ if(end!=blocks.begin() && end!=cur_blocks_end)
// Free blocks up to the last inactive sensor
- release_blocks(cur_blocks, cur_blocks.begin(), end);
+ release_blocks(blocks.begin(), end);
}
}
-void Train::turnout_event(unsigned addr, bool)
+void Train::turnout_path_changed(Track &track)
{
- if(pending_block)
- {
- unsigned pending_addr = pending_block->get_turnout_id();
- bool double_addr = (*pending_block->get_tracks().begin())->get_type().is_double_address();
- if(addr==pending_addr || (double_addr && addr==pending_addr+1))
- {
- if(reserving)
- pending_block = 0;
- else
- reserve_more();
- }
- }
+ for(list<BlockIter>::iterator i=blocks.begin(); i!=blocks.end(); ++i)
+ if((*i)->get_turnout_id()==track.get_turnout_id() && !reserving)
+ check_turnout_paths(false);
}
void Train::halt_event(bool h)
void Train::block_reserved(const Block &block, const Train *train)
{
- if(&block==pending_block && !train)
+ if(&block==pending_block && !train && !reserving)
reserve_more();
}
-unsigned Train::reserve_more()
+void Train::reserve_more()
{
- if(!active)
- return 0;
+ if(!active || blocks.empty() || end_of_route)
+ return;
- BlockRef *start = 0;
- if(!rsv_blocks.empty())
- start = &rsv_blocks.back();
- else if(!cur_blocks.empty())
- start = &cur_blocks.back();
- if(!start)
- return 0;
+ BlockIter start = blocks.back();
pending_block = 0;
- // See how many sensor blocks we already have
+ // See how many sensor blocks and how much track we already have
unsigned nsens = 0;
- for(list<BlockRef>::const_iterator i=rsv_blocks.begin(); i!=rsv_blocks.end(); ++i)
- if(i->block->get_sensor_id())
- ++nsens;
-
- if(end_of_route)
- return nsens;
-
- const Route *cur_route = 0;
- if(route)
+ float dist = 0;
+ for(BlockList::const_iterator i=cur_blocks_end; i!=blocks.end(); ++i)
{
- const set<Track *> &tracks = start->block->get_tracks();
- for(set<Track *>::const_iterator i=tracks.begin(); (cur_route!=route && i!=tracks.end()); ++i)
- {
- if(route->get_tracks().count(*i))
- cur_route = route;
- else if(next_route && next_route->get_tracks().count(*i))
- cur_route = next_route;
- }
+ if((*i)->get_sensor_id())
+ ++nsens;
+ if(nsens>0)
+ dist += (*i)->get_path_length(i->entry());
}
- SetFlag setf(reserving);
+ list<RouteRef>::iterator cur_route = routes.begin();
+ advance_route(cur_route, *start.track_iter());
- BlockRef *last = start;
- BlockRef *good = start;
- unsigned good_sens = nsens;
+ float approach_margin = 50*layout.get_catalogue().get_scale();
+ float min_dist = controller->get_braking_distance()*1.3+approach_margin*2;
+
+ BlockIter block = start;
+ list<BlockIter>::iterator good_end = blocks.end();
+ Track *divert_track = 0;
+ bool try_divert = false;
Train *blocking_train = 0;
- std::list<BlockRef> contested_blocks;
- while(good_sens<3 || !contested_blocks.empty())
+ BlockList contested_blocks;
+
+ SetFlag setf(reserving);
+
+ while(1)
{
- // Traverse to the next block
- unsigned exit = last->block->traverse(last->entry, cur_route);
- Block *link = last->block->get_link(exit);
- if(!link)
+ BlockIter last = block;
+ block = block.next(cur_route!=routes.end() ? cur_route->route : 0);
+ if(!block || block->get_endpoints().size()<2)
+ {
+ if(!blocking_train)
+ good_end = blocks.end();
break;
+ }
- int entry = link->get_endpoint_by_link(*last->block);
- if(entry<0)
- throw LogicError("Block links are inconsistent!");
-
- const Block::Endpoint &entry_ep = link->get_endpoints()[entry];
+ TrackIter track = block.track_iter();
- if(cur_route)
+ if(cur_route!=routes.end())
{
- if(cur_route!=next_route && next_route && next_route->get_tracks().count(entry_ep.track))
- cur_route = next_route;
- else if(!cur_route->get_tracks().count(entry_ep.track))
+ if(!advance_route(cur_route, *track))
{
// Keep the blocks if we arrived at the end of the route
if(!blocking_train)
{
- good = last;
- good_sens = nsens;
+ good_end = blocks.end();
end_of_route = true;
}
break;
}
}
- else if(route && route->get_tracks().count(entry_ep.track))
- cur_route = route;
- if(link->get_endpoints().size()<2)
+ if(block->get_turnout_id() && !last->get_turnout_id())
{
- if(!blocking_train)
- {
- good = last;
- good_sens = nsens;
- }
- break;
+ /* We can keep the blocks if we arrive at a turnout from a non-turnout
+ block. Having a turnout block as our last reserved block is not good
+ as it would limit our diversion possibilities for little benefit. */
+ good_end = blocks.end();
+ if(nsens>=3 && dist>=min_dist)
+ break;
}
if(blocking_train)
{
- if(link->get_train()!=blocking_train)
+ if(block->get_train()!=blocking_train)
{
- // XXX is it possible that this won't free all the blocks we want?
- if(blocking_train->free_block(*contested_blocks.back().block))
+ if(blocking_train->free_block(*contested_blocks.back()))
{
// Roll back and start actually reserving the blocks
- last = &rsv_blocks.back();
+ block = blocks.back();
+ cur_route = routes.begin();
+ advance_route(cur_route, *block.track_iter().track());
if(blocking_train->get_priority()==priority)
blocking_train->yield_to(*this);
blocking_train = 0;
}
else
{
- pending_block = contested_blocks.front().block;
+ yield_to(*blocking_train);
+ pending_block = contested_blocks.front().block();
+ try_divert = divert_track;
break;
}
}
else
{
- contested_blocks.push_back(BlockRef(link, entry));
- last = &contested_blocks.back();
+ contested_blocks.push_back(block);
continue;
}
}
- bool reserved = link->reserve(this);
+ bool reserved = block->reserve(this);
if(!reserved)
{
/* We've found another train. If it wants to exit the block from the
same endpoint we're trying to enter from or the other way around,
treat it as coming towards us. Otherwise treat it as going in the
same direction. */
- Train *other_train = link->get_train();
- int other_entry = other_train->get_entry_to_block(*link);
+ Train *other_train = block->get_train();
+ int other_entry = other_train->get_entry_to_block(*block);
if(other_entry<0)
throw LogicError("Block reservation inconsistency");
+ unsigned exit = block.reverse().entry();
+ unsigned other_exit = BlockIter(block.block(), other_entry).reverse().entry();
+ bool entry_conflict = (block.entry()==other_exit);
+ bool exit_conflict = (exit==static_cast<unsigned>(other_entry));
+ if(!entry_conflict && !last->get_turnout_id())
+ /* The other train is not coming to the blocks we're holding, so we
+ can keep them. */
+ good_end = blocks.end();
+
int other_prio = other_train->get_priority();
- bool entry_conflict = (static_cast<unsigned>(entry)==link->traverse(other_entry));
- bool exit_conflict = (link->traverse(entry)==static_cast<unsigned>(other_entry));
- if(!entry_conflict && !exit_conflict)
+ if(!entry_conflict && !exit_conflict && other_prio<priority)
{
- /* Same direction, keep the blocks we got so far and wait for the
- other train to pass */
- good = last;
- good_sens = nsens;
-
- // Ask a lesser priority train to free the block for us
- if(other_train->get_priority()<priority)
- if(other_train->free_block(*link))
- reserved = link->reserve(this);
+ /* Ask a lesser priority train going to the same direction to free
+ the block for us */
+ if(other_train->free_block(*block))
+ reserved = block->reserve(this);
}
- else if(other_prio<priority || (other_prio==priority && other_train!=yielding_to && entry_conflict))
+ else if(other_train!=yielding_to && (other_prio<priority || (other_prio==priority && entry_conflict)))
{
/* A lesser priority train is coming at us, we must ask it to free
enough blocks to get clear of it to avoid a potential deadlock */
blocking_train = other_train;
contested_blocks.clear();
- contested_blocks.push_back(BlockRef(link, entry));
- last = &contested_blocks.back();
+ contested_blocks.push_back(block);
continue;
}
+ else if(divert_track && (entry_conflict || exit_conflict))
+ // We are blocked, but there's a diversion possibility
+ try_divert = true;
if(!reserved)
{
- pending_block = link;
+ pending_block = &*block;
break;
}
}
- if(link->get_turnout_id())
+ if(block->get_turnout_id())
{
- const Endpoint &track_ep = entry_ep.track->get_type().get_endpoints()[entry_ep.track_ep];
-
- // Keep the blocks reserved so far, as either us or the other train can diverge
- good = last;
- good_sens = nsens;
-
- // Figure out what path we'd like to take on the turnout
- int path = -1;
- if(cur_route)
- path = cur_route->get_turnout(link->get_turnout_id());
- if(path<0)
- path = entry_ep.track->get_active_path();
- if(!((track_ep.paths>>path)&1))
- {
- for(unsigned i=0; track_ep.paths>>i; ++i)
- if((track_ep.paths>>i)&1)
- path = i;
- }
+ const TrackType::Endpoint &track_ep = track.endpoint();
+ bool multiple_paths = (track_ep.paths&(track_ep.paths-1));
- if(path!=static_cast<int>(entry_ep.track->get_active_path()))
- {
- // The turnout is set to wrong path - switch and wait for it
- pending_block = link;
- entry_ep.track->set_active_path(path);
- if(pending_block)
- {
- link->reserve(0);
- break;
- }
- }
+ if(multiple_paths && cur_route!=routes.end() && cur_route->diversion!=block->get_turnout_id())
+ /* There's multiple paths to be taken and we are on a route - take
+ note of the diversion possibility */
+ divert_track = &*track;
}
- if(!contested_blocks.empty() && contested_blocks.front().block==link)
+ if(!contested_blocks.empty() && contested_blocks.front()==block)
contested_blocks.pop_front();
- rsv_blocks.push_back(BlockRef(link, entry));
- last = &rsv_blocks.back();
- if(last->block->get_sensor_id())
+ blocks.push_back(block);
+
+ if(cur_blocks_end==blocks.end())
+ --cur_blocks_end;
+ if(clear_blocks_end==blocks.end())
+ --clear_blocks_end;
+ if(good_end==blocks.end())
+ --good_end;
+
+ if(block->get_sensor_id())
++nsens;
+ if(nsens>0)
+ dist += block->get_path_length(block.entry());
}
// Unreserve blocks that were not good
- while(!rsv_blocks.empty() && &rsv_blocks.back()!=good)
- {
- rsv_blocks.back().block->reserve(0);
- rsv_blocks.erase(--rsv_blocks.end());
- }
+ release_blocks(good_end, blocks.end());
- if(!rsv_blocks.empty() && &rsv_blocks.back()!=start)
+ if(blocks.back()!=start)
// We got some new blocks, so no longer need to yield
yielding_to = 0;
+ check_turnout_paths(true);
+
// Make any sensorless blocks at the beginning immediately current
- list<BlockRef>::iterator i;
- for(i=rsv_blocks.begin(); (i!=rsv_blocks.end() && !i->block->get_sensor_id()); ++i) ;
- if(i!=rsv_blocks.begin())
- cur_blocks.splice(cur_blocks.end(), rsv_blocks, rsv_blocks.begin(), i);
+ while(cur_blocks_end!=clear_blocks_end && !(*cur_blocks_end)->get_sensor_id())
+ ++cur_blocks_end;
- return good_sens;
+ if(try_divert && divert(*divert_track))
+ reserve_more();
+}
+
+void Train::check_turnout_paths(bool set)
+{
+ if(clear_blocks_end==blocks.end())
+ return;
+
+ for(list<BlockIter>::iterator i=clear_blocks_end; i!=blocks.end(); ++i)
+ {
+ if((*i)->get_turnout_id())
+ {
+ TrackIter track = i->track_iter();
+ const TrackType::Endpoint &track_ep = track.endpoint();
+
+ unsigned path = 0;
+ list<BlockIter>::iterator j = i;
+ if(++j!=blocks.end())
+ {
+ TrackIter rev = j->track_iter().flip();
+ unsigned mask = rev.endpoint().paths&track_ep.paths;
+ for(path=0; mask>1; mask>>=1, ++path) ;
+ }
+ else
+ return;
+
+ if(path!=track->get_active_path())
+ {
+ if(set)
+ track->set_active_path(path);
+
+ /* Check again, in case the driver was able to service the request
+ instantly */
+ if(!set || path!=track->get_active_path())
+ continue;
+ }
+ }
+
+ if(i==clear_blocks_end)
+ ++clear_blocks_end;
+ }
+}
+
+float Train::get_reserved_distance_until(const Block *until_block, bool back) const
+{
+ if(blocks.empty())
+ return 0;
+
+ Vehicle &veh = *(reverse!=back ? vehicles.back() : vehicles.front());
+ const VehicleType &vtype = veh.get_type();
+
+ TrackIter track(veh.get_track(), veh.get_entry());
+ if(!track) // XXX Probably unnecessary
+ return 0;
+
+ BlockList::const_iterator block = blocks.begin();
+ while(block!=clear_blocks_end && !(*block)->has_track(*track))
+ ++block;
+ if(block==clear_blocks_end || &**block==until_block)
+ return 0;
+
+ float result = veh.get_offset();
+ if(reverse!=back)
+ track = track.reverse();
+ else
+ result = track->get_type().get_path_length(track->get_active_path())-result;
+ result -= vtype.get_length()/2;
+
+ while(1)
+ {
+ track = track.next();
+ if(!track)
+ break;
+
+ if(!(*block)->has_track(*track))
+ {
+ if(back)
+ {
+ if(block==blocks.begin())
+ break;
+ --block;
+ }
+ else
+ {
+ ++block;
+ if(block==clear_blocks_end)
+ break;
+ }
+
+ if(&**block==until_block)
+ break;
+ }
+
+ result += track->get_type().get_path_length(track->get_active_path());
+ }
+
+ return result;
}
float Train::get_real_speed(unsigned i) const
unsigned low = 0;
unsigned high = 0;
+ unsigned last = 0;
for(unsigned i=0; (!high && i<=14); ++i)
if(real_speed[i].weight)
{
+ last = i;
if(real_speed[i].speed<real)
low = i;
else
else
return 0;
}
- return min(static_cast<unsigned>(low*real/real_speed[low].speed), 14U);
+ return min(min(static_cast<unsigned>(low*real/real_speed[low].speed), 14U), last+3);
}
float f = (real-real_speed[low].speed)/(real_speed[high].speed-real_speed[low].speed);
signal_status_changed.emit(s);
}
-void Train::release_blocks(list<BlockRef> &blocks)
+void Train::release_blocks()
{
- release_blocks(blocks, blocks.begin(), blocks.end());
+ release_blocks(blocks.begin(), blocks.end());
}
-void Train::release_blocks(list<BlockRef> &blocks, list<BlockRef>::iterator begin, list<BlockRef>::iterator end)
+void Train::release_blocks(BlockList::iterator begin, BlockList::iterator end)
{
while(begin!=end)
{
- Block *block = begin->block;
+ if(begin==cur_blocks_end)
+ cur_blocks_end = end;
+ if(begin==clear_blocks_end)
+ clear_blocks_end = end;
+
+ Block &block = **begin;
blocks.erase(begin++);
- block->reserve(0);
+ block.reserve(0);
+
+ if(begin==blocks.end())
+ end_of_route = false;
}
}
-void Train::reverse_blocks(list<BlockRef> &blocks) const
+void Train::reverse_blocks(BlockList &blks) const
{
- blocks.reverse();
- for(list<BlockRef>::iterator i=blocks.begin(); i!=blocks.end(); ++i)
- i->entry = i->block->traverse(i->entry);
+ blks.reverse();
+ for(BlockList::iterator i=blks.begin(); i!=blks.end(); ++i)
+ *i = i->reverse();
}
+bool Train::advance_route(list<RouteRef>::iterator &iter, Track &track)
+{
+ while(iter!=routes.end() && !iter->route->has_track(track))
+ ++iter;
+ if(iter==routes.end())
+ return false;
-Train::BlockRef::BlockRef(Block *b, unsigned e):
- block(b),
- entry(e)
-{ }
+ list<RouteRef>::iterator next = iter;
+ ++next;
+ if(next!=routes.end() && next->diversion && next->route->has_track(track))
+ iter = next;
-Train::BlockRef Train::BlockRef::next() const
+ return true;
+}
+
+Route *Train::create_lead_route(Route *lead, const Route *target)
{
- Block *blk = block->get_endpoints()[block->traverse(entry)].link;
- if(!blk)
- throw InvalidState("At end of line");
+ if(!lead)
+ {
+ lead = new Route(layout);
+ lead->set_name("Lead");
+ lead->set_temporary(true);
+ }
+
+ set<Track *> tracks;
+ for(BlockList::iterator i=blocks.begin(); i!=blocks.end(); ++i)
+ {
+ const set<Track *> &btracks = (*i)->get_tracks();
+ for(set<Track *>::const_iterator j=btracks.begin(); j!=btracks.end(); ++j)
+ if(!target || !target->has_track(**j))
+ tracks.insert(*j);
+ }
+
+ lead->add_tracks(tracks);
+
+ return lead;
+}
+
+bool Train::is_valid_diversion(const Route &diversion, const TrackIter &from)
+{
+ float diversion_len = 0;
+ TrackLoopIter track1 = from;
+ while(diversion.has_track(*track1))
+ {
+ unsigned path = diversion.get_path(*track1);
+ diversion_len += track1->get_type().get_path_length(path);
+
+ track1 = track1.next(path);
+
+ if(track1.looped())
+ return false;
+ }
- int ep = blk->get_endpoint_by_link(*block);
- if(ep<0)
- throw LogicError("Block links are inconsistent");
+ list<RouteRef>::iterator route = routes.begin();
+ if(!advance_route(route, *from))
+ return false;
- return BlockRef(blk, ep);
+ float route_len = 0;
+ TrackLoopIter track2 = from;
+ while(1)
+ {
+ unsigned path = route->route->get_path(*track2);
+ route_len += track2->get_type().get_path_length(path);
+
+ bool ok = (track2!=from && diversion.has_track(*track2));
+
+ track2 = track2.next(path);
+
+ if(ok)
+ break;
+
+ if(track2.looped())
+ return false;
+
+ if(!advance_route(route, *track2))
+ return false;
+ }
+
+ // Must end up at the same place through both routes
+ if(track2!=track1)
+ return false;
+
+ return diversion_len<route_len*1.2;
}
+Train::RouteRef::RouteRef(const Route *r, unsigned d):
+ route(r),
+ diversion(d)
+{ }
+
+
Train::RealSpeed::RealSpeed():
speed(0),
weight(0)
void Train::Loader::finish()
{
- if(!obj.cur_blocks.empty())
+ if(!obj.blocks.empty())
{
- const BlockRef &blkref = obj.cur_blocks.front();
- const Block::Endpoint &bep = blkref.block->get_endpoints()[blkref.entry];
- obj.vehicles.back()->place(bep.track, bep.track_ep, 0, Vehicle::BACK_BUFFER);
+ TrackIter track = obj.blocks.front().track_iter();
+ float offset = 2*obj.layout.get_catalogue().get_scale();
+ obj.vehicles.back()->place(*track, track.entry(), offset, Vehicle::BACK_BUFFER);
obj.set_status("Stopped");
}
entry = 0;
blk->reserve(&obj);
- obj.cur_blocks.push_back(BlockRef(blk, entry));
+ obj.blocks.push_back(BlockIter(blk, entry));
if(blk->get_sensor_id())
obj.layout.get_driver().set_sensor(blk->get_sensor_id(), true);
load_sub(*obj.timetable);
}
-void Train::Loader::vehicle(unsigned n)
+void Train::Loader::vehicle(ArticleNumber art_nr)
{
- const VehicleType &vtype = obj.layout.get_catalogue().get_vehicle(n);
+ const VehicleType &vtype = obj.layout.get_catalogue().get_vehicle(art_nr);
Vehicle *veh = new Vehicle(obj.layout, vtype);
obj.vehicles.back()->attach_back(*veh);
obj.vehicles.push_back(veh);
projects / r2c2.git / blobdiff