BlockAllocator::BlockAllocator(Train &t):
train(t),
+ active(false),
cur_blocks_end(blocks.end()),
next_sensor(0),
pending_block(0),
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)
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. */
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());
/* Add it to the list first to present a consistent state in block_reserved
signal. */
blocks.push_back(block);
+
+ bool first_reserve = (cur_blocks_end==blocks.end());
+ if(first_reserve)
+ --cur_blocks_end;
+
try
{
if(!block->reserve(&train))
{
+ if(first_reserve)
+ cur_blocks_end = blocks.end();
blocks.pop_back();
return false;
}
}
catch(...)
{
+ if(first_reserve)
+ cur_blocks_end = blocks.end();
blocks.pop_back();
throw;
}
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.
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();
/* Sensors aren't guaranteed to be detriggered in order. Go through the
block list and locate the first sensor that's still active. */
void BlockAllocator::turnout_path_changing(Track &track)
{
- BlockList::iterator i = find_if(blocks.begin(), blocks.end(), BlockMatch(track.get_block()));
+ BlockList::iterator i = find_if(cur_blocks_end, blocks.end(), BlockMatch(track.get_block()));
if(i!=blocks.end())
{
++i;
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;
}