BlockAllocator::BlockAllocator(Train &t):
train(t),
+ active(false),
cur_blocks_end(blocks.end()),
next_sensor(0),
pending_block(0),
Layout &layout = train.get_layout();
layout.signal_block_reserved.connect(sigc::mem_fun(this, &BlockAllocator::block_reserved));
layout.signal_sensor_state_changed.connect(sigc::mem_fun(this, &BlockAllocator::sensor_state_changed));
+ layout.get_driver().signal_halt.connect(sigc::mem_fun(this, &BlockAllocator::halt_event));
const set<Track *> &tracks = layout.get_all<Track>();
for(set<Track *>::const_iterator i=tracks.begin(); i!=tracks.end(); ++i)
- if((*i)->get_turnout_id())
+ if((*i)->get_type().is_turnout())
{
(*i)->signal_path_changing.connect(sigc::hide(sigc::bind(sigc::mem_fun(this, &BlockAllocator::turnout_path_changing), sigc::ref(**i))));
(*i)->signal_path_changed.connect(sigc::hide(sigc::bind(sigc::mem_fun(this, &BlockAllocator::turnout_path_changed), sigc::ref(**i))));
}
}
-void BlockAllocator::start_from(const BlockIter &block)
+bool BlockAllocator::start_from(const BlockIter &block)
{
if(!block)
throw invalid_argument("BlockAllocator::start_from");
+ float remaining_length = 0;
+ unsigned n_vehs = train.get_n_vehicles();
+ for(unsigned i=0; i<n_vehs; ++i)
+ remaining_length += train.get_vehicle(i).get_type().get_length();
+
clear();
- reserve_block(block);
+
+ BlockList blocks_to_reserve;
+ for(BlockIter b=block; b; b=b.next())
+ {
+ if(b->get_train())
+ break;
+ blocks_to_reserve.push_back(b);
+ for(TrackIter t=b.track_iter(); (t && &t->get_block()==&*b); t=t.next())
+ remaining_length -= t->get_path_length();
+ if(remaining_length<=0)
+ break;
+ }
+
+ if(remaining_length>0)
+ return false;
+
+ for(BlockList::iterator i=blocks_to_reserve.begin(); i!=blocks_to_reserve.end(); ++i)
+ {
+ blocks.push_back(*i);
+ try
+ {
+ (*i)->reserve(&train);
+ }
+ catch(...)
+ {
+ blocks.pop_back();
+ while(i!=blocks_to_reserve.begin())
+ {
+ blocks.pop_back();
+ (*--i)->reserve(0);
+ }
+ throw;
+ }
+ }
+
+ return true;
}
void BlockAllocator::rewind_to(const Block &block)
if(blocks.empty())
throw logic_error("no blocks");
+ if(train.get_layout().get_driver().is_halted())
+ return;
+
BlockIter start = blocks.back();
if(&*start==stop_at_block)
return;
float dist = 0;
for(BlockList::const_iterator i=cur_blocks_end; i!=blocks.end(); ++i)
{
- if((*i)->get_sensor_id())
+ if((*i)->get_sensor_address())
++nsens;
if(nsens>0)
dist += (*i)->get_path_length(i->entry());
// The track ends here
break;
- if(block->get_turnout_id() && !prev->get_turnout_id())
+ if(block->get_turnout_address() && !prev->get_turnout_address())
{
/* We are arriving at a turnout. See if we have enough blocks and
distance reserved. */
}
else
{
- const TrackType::Endpoint &entry_ep = track.endpoint();
unsigned path = track->get_active_path();
- if(!entry_ep.has_path(path))
+ if(!track.endpoint().has_path(path))
{
- const TrackType::Endpoint &exit_ep = track.reverse().endpoint();
- if(entry_ep.has_common_paths(exit_ep))
+ path = track->get_type().coerce_path(track.entry(), path);
+ track->set_active_path(path);
+ if(track->is_path_changing())
{
- unsigned mask = entry_ep.paths&exit_ep.paths;
- for(path=0; mask>1; ++path, mask>>=1) ;
-
- track->set_active_path(path);
- if(track->is_path_changing())
- {
- pending_block = &*block;
- break;
- }
- }
- else
- // XXX Do something here
+ pending_block = &*block;
break;
+ }
}
}
if(&*block==stop_at_block)
break;
- if(block->get_sensor_id())
+ if(block->get_sensor_address())
++nsens;
if(nsens>0)
dist += block->get_path_length(block.entry());
else
end = blocks.end();
+ if(end==blocks.end() && blocks.back().block()==pending_block)
+ --end;
+
SetFlag setf(advancing);
BlockList::iterator i = cur_blocks_end;
// Update cur_blocks_end first to keep things consistent.
cur_blocks_end = end;
for(; i!=end; ++i)
- train.signal_advanced.emit(**i);
+ signal_advanced.emit(**i, (*i)->get_sensor());
}
void BlockAllocator::advance_front(const Sensor *sensor)
void BlockAllocator::advance_back()
{
- const Vehicle &veh = train.get_vehicle(train.get_controller().get_reverse() ? 0 : train.get_n_vehicles()-1);
- const Block &veh_block = veh.get_track()->get_block();
+ bool rev = train.get_controller().get_reverse();
+ const Vehicle &veh = train.get_vehicle(rev ? 0 : train.get_n_vehicles()-1);
+ const Block &veh_block = veh.get_placement().get_position(rev ? VehiclePlacement::FRONT_AXLE : VehiclePlacement::BACK_AXLE)->get_block();
+
+ bool pending_cleared = false;
/* Sensors aren't guaranteed to be detriggered in order. Go through the
block list and locate the first sensor that's still active. */
end = i;
}
+ if(block==pending_block)
+ pending_cleared = true;
+
// Stop if we encounter an active sensor or the train's last vehicle
if(block==&veh_block || active_sensor)
{
if(i!=end)
++end;
release_blocks_begin(end);
+ signal_rear_advanced.emit(*last());
}
+
+ if(pending_cleared)
+ reserve_more();
+
return;
}
}
{
if(&sensor==next_sensor)
{
+ if(is_block_current(*block))
+ signal_advanced.emit(*block, &sensor);
update_next_sensor(next_sensor);
advance_front(next_sensor);
reserve_more();
}
else if(!is_block_current(*block))
- train.get_layout().emergency("Sensor for "+train.get_name()+" triggered out of order");
+ train.get_layout().emergency(block, "Sensor for "+train.get_name()+" triggered out of order");
}
else if(state==Sensor::INACTIVE)
advance_back();
next_sensor = 0;
}
+void BlockAllocator::halt_event(bool halted)
+{
+ if(active && !halted)
+ reserve_more();
+}
+
void BlockAllocator::save(list<DataFile::Statement> &st) const
{
if(!blocks.empty() && cur_blocks_end!=blocks.begin())
st.push_back((DataFile::Statement("hint"), prev->get_id()));
- for(BlockList::const_iterator i=cur_blocks.begin(); i!=cur_blocks.end(); ++i)
+ for(BlockList::const_iterator i=cur_blocks.begin(); (i!=cur_blocks.end() && i->block()!=pending_block); ++i)
st.push_back((DataFile::Statement("block"), (*i)->get_id()));
}
}
obj.blocks.push_back(BlockIter(blk, entry));
blk->reserve(&obj.train);
- if(blk->get_sensor_id())
- obj.train.get_layout().get_driver().set_sensor(blk->get_sensor_id(), true);
+ if(blk->get_sensor_address())
+ obj.train.get_layout().get_driver().set_sensor(blk->get_sensor_address(), true);
prev_block = blk;
}
projects / r2c2.git / blobdiff