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/*
* File: dgnevent.cc
* Summary: General dungeon events.
* Created by: dshaligram on Sat Jul 21 12:17:29 2007 UTC
*
* Modified for Crawl Reference by $Author$ on $Date$
*
*/
#include "AppHdr.h"
#include "dgnevent.h"
#include "stuff.h"
#include <algorithm>
dgn_event_dispatcher dungeon_events;
void dgn_event_dispatcher::clear()
{
global_event_mask = 0;
listeners.clear();
for (int y = 0; y < GYM; ++y)
for (int x = 0; x < GXM; ++x)
grid_triggers[x][y].reset(NULL);
}
void dgn_event_dispatcher::clear_listeners_at(const coord_def &pos)
{
grid_triggers[pos.x][pos.y].reset(NULL);
}
void dgn_event_dispatcher::move_listeners(
const coord_def &from, const coord_def &to)
{
// Any existing listeners at to will be discarded. YHBW.
grid_triggers[to.x][to.y] = grid_triggers[from.x][from.y];
}
bool dgn_event_dispatcher::has_listeners_at(const coord_def &pos) const
{
return (grid_triggers[pos.x][pos.y].get());
}
void dgn_event_dispatcher::fire_position_event(
dgn_event_type event, const coord_def &pos)
{
const dgn_event et(event, pos);
fire_position_event(et, pos);
}
void dgn_event_dispatcher::fire_position_event(
const dgn_event &et, const coord_def &pos)
{
dgn_square_alarm *alarm = grid_triggers[pos.x][pos.y].get();
if (alarm && (alarm->eventmask & et.type))
{
dgn_square_alarm alcopy = *alarm;
for (std::list<dgn_event_listener*>::iterator
i = alcopy.listeners.begin();
i != alcopy.listeners.end(); ++i)
{
(*i)->notify_dgn_event(et);
}
}
}
void dgn_event_dispatcher::fire_event(const dgn_event &e)
{
if (global_event_mask & e.type)
{
std::list<dgn_listener_def> lcopy = listeners;
for (std::list<dgn_listener_def>::iterator i = lcopy.begin();
i != lcopy.end(); ++i)
{
if (i->eventmask & e.type)
i->listener->notify_dgn_event(e);
}
}
}
void dgn_event_dispatcher::fire_event(dgn_event_type et)
{
fire_event(dgn_event(et));
}
void dgn_event_dispatcher::register_listener(unsigned mask,
dgn_event_listener *listener,
const coord_def &pos)
{
if (in_bounds(pos))
register_listener_at(mask, pos, listener);
else
{
global_event_mask |= mask;
for (std::list<dgn_listener_def>::iterator i = listeners.begin();
i != listeners.end(); ++i)
{
if (i->listener == listener)
{
i->eventmask |= mask;
return;
}
}
listeners.push_back(dgn_listener_def(mask, listener));
}
}
void dgn_event_dispatcher::register_listener_at(unsigned mask,
const coord_def &c,
dgn_event_listener *listener)
{
if (!grid_triggers[c.x][c.y].get())
grid_triggers[c.x][c.y].reset(new dgn_square_alarm);
dgn_square_alarm *alarm = grid_triggers[c.x][c.y].get();
alarm->eventmask |= mask;
if (std::find(alarm->listeners.begin(), alarm->listeners.end(),
listener) == alarm->listeners.end())
alarm->listeners.push_back(listener);
}
void dgn_event_dispatcher::remove_listener(dgn_event_listener *listener,
const coord_def &pos)
{
if (in_bounds(pos))
remove_listener_at(pos, listener);
else
{
for (std::list<dgn_listener_def>::iterator i = listeners.begin();
i != listeners.end(); ++i)
{
if (i->listener == listener)
{
listeners.erase(i);
return;
}
}
}
}
void dgn_event_dispatcher::remove_listener_at(const coord_def &pos,
dgn_event_listener *listener)
{
if (dgn_square_alarm *alarm = grid_triggers[pos.x][pos.y].get())
{
std::list<dgn_event_listener*>::iterator i =
std::find(alarm->listeners.begin(), alarm->listeners.end(),
listener);
if (i != alarm->listeners.end())
alarm->listeners.erase(i);
}
}
/////////////////////////////////////////////////////////////////////////////
// dgn_event_listener
dgn_event_listener::~dgn_event_listener()
{
}
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