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/*
* The Mana Server
* Copyright (C) 2006-2010 The Mana World Development Team
*
* This file is part of The Mana Server.
*
* The Mana Server is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* The Mana Server is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with The Mana Server. If not, see <http://www.gnu.org/licenses/>.
*/
#include "game-server/spawnarea.h"
#include "game-server/mapcomposite.h"
#include "game-server/monster.h"
#include "game-server/state.h"
#include "utils/logger.h"
struct SpawnAreaEventDispatch : EventDispatch
{
SpawnAreaEventDispatch()
{
typedef EventListenerFactory< SpawnArea, &SpawnArea::mSpawnedListener >
Factory;
removed = &Factory::create< Entity, &SpawnArea::decrease >::function;
}
};
static SpawnAreaEventDispatch spawnAreaEventDispatch;
SpawnArea::SpawnArea(MapComposite *map,
MonsterClass *specy,
const Rectangle &zone,
int maxBeings,
int spawnRate):
Entity(OBJECT_OTHER, map),
mSpecy(specy),
mSpawnedListener(&spawnAreaEventDispatch),
mZone(zone),
mMaxBeings(maxBeings),
mSpawnRate(spawnRate),
mNumBeings(0),
mNextSpawn(0)
{
}
void SpawnArea::update()
{
if (mNextSpawn > 0)
mNextSpawn--;
if (mNextSpawn == 0 && mNumBeings < mMaxBeings && mSpawnRate > 0)
{
MapComposite *map = getMap();
const Map *realMap = map->getMap();
// Reset the spawn area to the whole map in case of dimensionless zone
if (mZone.w == 0 || mZone.h == 0)
{
mZone.x = 0;
mZone.y = 0;
mZone.w = realMap->getWidth() * realMap->getTileWidth();
mZone.h = realMap->getHeight() * realMap->getTileHeight();
}
// Find a free spawn location. Give up after 10 tries
int c = 10;
Point position;
const int x = mZone.x;
const int y = mZone.y;
const int width = mZone.w;
const int height = mZone.h;
Being *being = new Monster(mSpecy);
if (being->getModifiedAttribute(ATTR_MAX_HP) <= 0)
{
LOG_WARN("Refusing to spawn dead monster " << mSpecy->getId());
delete being;
being = 0;
}
if (being)
{
do
{
position = Point(x + rand() % width, y + rand() % height);
c--;
}
while (!realMap->getWalk(position.x / realMap->getTileWidth(),
position.y / realMap->getTileHeight(),
being->getWalkMask()) && c);
if (c)
{
being->addListener(&mSpawnedListener);
being->setMap(map);
being->setPosition(position);
being->clearDestination();
GameState::enqueueInsert(being);
mNumBeings++;
}
else
{
LOG_WARN("Unable to find a free spawn location for monster "
<< mSpecy->getId() << " on map " << map->getName()
<< " (" << x << ',' << y << ','
<< width << ',' << height << ')');
delete being;
}
}
// Predictable respawn intervals (can be randomized later)
mNextSpawn = (10 * 60) / mSpawnRate;
}
}
void SpawnArea::decrease(Entity *t)
{
--mNumBeings;
t->removeListener(&mSpawnedListener);
}
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