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map.cpp
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map.cpp
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//////////////////////////////////////////////////////////////////////
// OpenTibia - an opensource roleplaying game
//////////////////////////////////////////////////////////////////////
// the map of OpenTibia
//////////////////////////////////////////////////////////////////////
// This program 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 (at your option) any later version.
//
// This program 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 this program; if not, write to the Free Software Foundation,
// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//////////////////////////////////////////////////////////////////////
#include "otpch.h"
#include "definitions.h"
#include <string>
#include <map>
#include <algorithm>
#include <boost/config.hpp>
#include <boost/bind.hpp>
#include "iomap.h"
#include "otsystem.h"
#include "iomapserialize.h"
#include <stdio.h>
#include <iomanip>
#include "items.h"
#include "map.h"
#include "tile.h"
#include "combat.h"
#include "creature.h"
#include "player.h"
#include "configmanager.h"
#include "game.h"
extern Game g_game;
extern ConfigManager g_config;
IOMapSerialize IOMapSerialize;
Map::Map()
{
mapWidth = 0;
mapHeight = 0;
}
Map::~Map()
{
//
}
bool Map::loadMap(const std::string& identifier)
{
IOMap* loader = new IOMap();
if(!loader->loadMap(this, identifier))
{
std::cout << "FATAL: [OTBM loader] " << loader->getLastErrorString() << std::endl;
return false;
}
if(!loader->loadSpawns(this))
std::cout << "WARNING: could not load spawn data." << std::endl;
if(!loader->loadHouses(this))
std::cout << "WARNING: could not load house data." << std::endl;
delete loader;
IOMapSerialize.loadHouseInfo(this);
IOMapSerialize.loadMap(this);
return true;
}
bool Map::saveMap()
{
bool saved = false;
for(uint32_t tries = 0; tries < 3; tries++)
{
if(IOMapSerialize.saveHouseInfo(this))
{
saved = true;
break;
}
}
if(!saved)
return false;
saved = false;
for(uint32_t tries = 0; tries < 3; tries++)
{
if(IOMapSerialize.saveMap(this))
{
saved = true;
break;
}
}
return saved;
}
Tile* Map::getTile(int32_t x, int32_t y, int32_t z)
{
if(x < 0 || x >= 0xFFFF || y < 0 || y >= 0xFFFF || z < 0 || z >= MAP_MAX_LAYERS)
return NULL;
QTreeLeafNode* leaf = QTreeNode::getLeafStatic(&root, x, y);
if(leaf)
{
Floor* floor = leaf->getFloor(z);
if(floor)
return floor->tiles[x & FLOOR_MASK][y & FLOOR_MASK];
}
return NULL;
}
Tile* Map::getTile(const Position& pos)
{
return getTile(pos.x, pos.y, pos.z);
}
void Map::setTile(int32_t x, int32_t y, int32_t z, Tile* newTile)
{
if(x < 0 || x >= 0xFFFF || y < 0 || y >= 0xFFFF || z < 0 || z >= MAP_MAX_LAYERS)
{
std::cout << "ERROR: Attempt to set tile on invalid coordinate " << Position(x, y, z) << "!" << std::endl;
return;
}
QTreeLeafNode::newLeaf = false;
QTreeLeafNode* leaf = root.createLeaf(x, y, 15);
if(QTreeLeafNode::newLeaf)
{
//update north
QTreeLeafNode* northLeaf = root.getLeaf(x, y - FLOOR_SIZE);
if(northLeaf)
northLeaf->m_leafS = leaf;
//update west leaf
QTreeLeafNode* westLeaf = root.getLeaf(x - FLOOR_SIZE, y);
if(westLeaf)
westLeaf->m_leafE = leaf;
//update south
QTreeLeafNode* southLeaf = root.getLeaf(x, y + FLOOR_SIZE);
if(southLeaf)
leaf->m_leafS = southLeaf;
//update east
QTreeLeafNode* eastLeaf = root.getLeaf(x + FLOOR_SIZE, y);
if(eastLeaf)
leaf->m_leafE = eastLeaf;
}
Floor* floor = leaf->createFloor(z);
uint32_t offsetX = x & FLOOR_MASK;
uint32_t offsetY = y & FLOOR_MASK;
if(!floor->tiles[offsetX][offsetY])
{
floor->tiles[offsetX][offsetY] = newTile;
newTile->qt_node = leaf;
}
else
std::cout << "Error: Map::setTile() already exists." << std::endl;
if(newTile->hasFlag(TILESTATE_REFRESH))
{
RefreshBlock_t rb;
rb.lastRefresh = OTSYS_TIME();
if(TileItemVector* newTileItems = newTile->getItemList())
{
for(ItemVector::iterator it = newTileItems->getBeginDownItem(); it != newTileItems->getEndDownItem(); ++it)
rb.list.push_back((*it)->clone());
}
refreshTileMap[newTile] = rb;
}
}
bool Map::placeCreature(const Position& centerPos, Creature* creature, bool extendedPos /*=false*/, bool forceLogin /*=false*/)
{
Tile* tile = getTile(centerPos);
bool foundTile = false;
bool placeInPZ = false;
if(tile)
{
placeInPZ = tile->hasFlag(TILESTATE_PROTECTIONZONE);
ReturnValue ret;
if(g_config.getBoolean(ConfigManager::ACCOUNT_MANAGER) && creature->getPlayer() && creature->getName() == "Account Manager")
ret = tile->__queryAdd(0, creature, 1, FLAG_IGNOREBLOCKITEM | FLAG_IGNOREBLOCKCREATURE);
else
ret = tile->__queryAdd(0, creature, 1, FLAG_IGNOREBLOCKITEM);
if(forceLogin || ret == RET_NOERROR || ret == RET_PLAYERISNOTINVITED)
foundTile = true;
}
typedef std::vector<std::pair<int32_t, int32_t> > RelPosList;
RelPosList relPosList;
if(extendedPos)
{
relPosList.push_back(std::make_pair(0, -2));
relPosList.push_back(std::make_pair(-2, 0));
relPosList.push_back(std::make_pair(0, 2));
relPosList.push_back(std::make_pair(2, 0));
std::random_shuffle(relPosList.begin(), relPosList.end());
}
relPosList.push_back(std::make_pair(-1, -1));
relPosList.push_back(std::make_pair(-1, 0));
relPosList.push_back(std::make_pair(-1, 1));
relPosList.push_back(std::make_pair(0, -1));
relPosList.push_back(std::make_pair(0, 1));
relPosList.push_back(std::make_pair(1, -1));
relPosList.push_back(std::make_pair(1, 0));
relPosList.push_back(std::make_pair(1, 1));
std::random_shuffle(relPosList.begin() + (extendedPos? 4 : 0), relPosList.end());
uint32_t radius = 1;
Position tryPos;
for(uint32_t n = 1; n <= radius && !foundTile; ++n)
{
for(RelPosList::iterator it = relPosList.begin(); it != relPosList.end() && !foundTile; ++it)
{
int32_t dx = it->first * n;
int32_t dy = it->second * n;
tryPos = centerPos;
tryPos.x = tryPos.x + dx;
tryPos.y = tryPos.y + dy;
tile = getTile(tryPos);
if(!tile || (placeInPZ && !tile->hasFlag(TILESTATE_PROTECTIONZONE)))
continue;
if(tile->__queryAdd(0, creature, 1, 0) == RET_NOERROR)
{
if(extendedPos)
{
if(isSightClear(centerPos, tryPos, false))
{
foundTile = true;
break;
}
}
else
{
foundTile = true;
break;
}
}
}
}
if(foundTile)
{
int32_t index = 0;
Item* toItem = NULL;
uint32_t flags = 0;
Cylinder* toCylinder = tile->__queryDestination(index, creature, &toItem, flags);
toCylinder->__internalAddThing(creature);
Tile* toTile = toCylinder->getTile();
toTile->qt_node->addCreature(creature);
return true;
}
#ifdef __DEBUG__
std::cout << "Failed to place creature onto map!" << std::endl;
#endif
return false;
}
bool Map::removeCreature(Creature* creature)
{
Tile* tile = creature->getTile();
if(tile)
{
tile->qt_node->removeCreature(creature);
tile->__removeThing(creature, 0);
return true;
}
return false;
}
void Map::getSpectatorsInternal(SpectatorVec& list, const Position& centerPos, bool checkforduplicate,
int32_t minRangeX, int32_t maxRangeX,
int32_t minRangeY, int32_t maxRangeY,
int32_t minRangeZ, int32_t maxRangeZ)
{
int32_t minoffset = centerPos.z - maxRangeZ;
int32_t x1 = std::min((int32_t)0xFFFF, std::max((int32_t)0, (centerPos.x + minRangeX + minoffset)));
int32_t y1 = std::min((int32_t)0xFFFF, std::max((int32_t)0, (centerPos.y + minRangeY + minoffset)));
int32_t maxoffset = centerPos.z - minRangeZ;
int32_t x2 = std::min((int32_t)0xFFFF, std::max((int32_t)0, (centerPos.x + maxRangeX + maxoffset)));
int32_t y2 = std::min((int32_t)0xFFFF, std::max((int32_t)0, (centerPos.y + maxRangeY + maxoffset)));
int32_t startx1 = x1 - (x1 % FLOOR_SIZE);
int32_t starty1 = y1 - (y1 % FLOOR_SIZE);
int32_t endx2 = x2 - (x2 % FLOOR_SIZE);
int32_t endy2 = y2 - (y2 % FLOOR_SIZE);
QTreeLeafNode* startLeaf;
QTreeLeafNode* leafE;
QTreeLeafNode* leafS;
startLeaf = getLeaf(startx1, starty1);
leafS = startLeaf;
for(int32_t ny = starty1; ny <= endy2; ny += FLOOR_SIZE)
{
leafE = leafS;
for(int32_t nx = startx1; nx <= endx2; nx += FLOOR_SIZE)
{
if(leafE)
{
CreatureVector& node_list = leafE->creature_list;
CreatureVector::const_iterator node_iter = node_list.begin();
CreatureVector::const_iterator node_end = node_list.end();
if(node_iter != node_end)
{
do
{
Creature* creature = *node_iter;
const Position& cpos = creature->getPosition();
int32_t offsetZ = centerPos.z - cpos.z;
if(cpos.z < minRangeZ || cpos.z > maxRangeZ)
continue;
if(cpos.y < (centerPos.y + minRangeY + offsetZ) || cpos.y > (centerPos.y + maxRangeY + offsetZ))
continue;
if(cpos.x < (centerPos.x + minRangeX + offsetZ) || cpos.x > (centerPos.x + maxRangeX + offsetZ))
continue;
if(checkforduplicate)
{
if(std::find(list.begin(), list.end(), creature) == list.end())
list.push_back(creature);
}
else
list.push_back(creature);
}
while(++node_iter != node_end);
}
leafE = leafE->stepEast();
}
else
leafE = getLeaf(nx + FLOOR_SIZE, ny);
}
if(leafS)
leafS = leafS->stepSouth();
else
leafS = getLeaf(startx1, ny + FLOOR_SIZE);
}
}
void Map::getSpectators(SpectatorVec& list, const Position& centerPos,
bool checkforduplicate /*= false*/, bool multifloor /*= false*/,
int32_t minRangeX /*= 0*/, int32_t maxRangeX /*= 0*/,
int32_t minRangeY /*= 0*/, int32_t maxRangeY /*= 0*/)
{
if(centerPos.z >= MAP_MAX_LAYERS)
return;
bool foundCache = false;
bool cacheResult = false;
if(minRangeX == 0 && maxRangeX == 0 && minRangeY == 0 && maxRangeY == 0 && multifloor == true && checkforduplicate == false)
{
SpectatorCache::iterator it = spectatorCache.find(centerPos);
if(it != spectatorCache.end())
{
list = *it->second;
foundCache = true;
}
else
cacheResult = true;
}
if(!foundCache)
{
minRangeX = (minRangeX == 0 ? -maxViewportX : -minRangeX);
maxRangeX = (maxRangeX == 0 ? maxViewportX : maxRangeX);
minRangeY = (minRangeY == 0 ? -maxViewportY : -minRangeY);
maxRangeY = (maxRangeY == 0 ? maxViewportY : maxRangeY);
int32_t minRangeZ;
int32_t maxRangeZ;
if(multifloor)
{
if(centerPos.z > 7)
{
//underground
//8->15
minRangeZ = std::max(centerPos.z - 2, (int32_t)0);
maxRangeZ = std::min(centerPos.z + 2, (int32_t)MAP_MAX_LAYERS - 1);
}
//above ground
else if(centerPos.z == 6)
{
minRangeZ = 0;
maxRangeZ = 8;
}
else if(centerPos.z == 7)
{
minRangeZ = 0;
maxRangeZ = 9;
}
else
{
minRangeZ = 0;
maxRangeZ = 7;
}
}
else
{
minRangeZ = centerPos.z;
maxRangeZ = centerPos.z;
}
getSpectatorsInternal(list, centerPos, true,
minRangeX, maxRangeX,
minRangeY, maxRangeY,
minRangeZ, maxRangeZ);
if(cacheResult)
spectatorCache[centerPos].reset(new SpectatorVec(list));
}
}
const SpectatorVec& Map::getSpectators(const Position& centerPos)
{
if(centerPos.z >= MAP_MAX_LAYERS)
{
boost::shared_ptr<SpectatorVec> p(new SpectatorVec());
SpectatorVec& list = *p;
return list;
}
SpectatorCache::iterator it = spectatorCache.find(centerPos);
if(it != spectatorCache.end())
return *it->second;
else
{
boost::shared_ptr<SpectatorVec> p(new SpectatorVec());
spectatorCache[centerPos] = p;
SpectatorVec& list = *p;
int32_t minRangeX = -maxViewportX;
int32_t maxRangeX = maxViewportX;
int32_t minRangeY = -maxViewportY;
int32_t maxRangeY = maxViewportY;
int32_t minRangeZ;
int32_t maxRangeZ;
if(centerPos.z > 7)
{
//underground
//8->15
minRangeZ = std::max(centerPos.z - 2, (int32_t)0);
maxRangeZ = std::min(centerPos.z + 2, (int32_t)MAP_MAX_LAYERS - 1);
}
//above ground
else if(centerPos.z == 6)
{
minRangeZ = 0;
maxRangeZ = 8;
}
else if(centerPos.z == 7)
{
minRangeZ = 0;
maxRangeZ = 9;
}
else
{
minRangeZ = 0;
maxRangeZ = 7;
}
getSpectatorsInternal(list, centerPos, false,
minRangeX, maxRangeX,
minRangeY, maxRangeY,
minRangeZ, maxRangeZ);
return list;
}
}
void Map::clearSpectatorCache()
{
spectatorCache.clear();
}
bool Map::canThrowObjectTo(const Position& fromPos, const Position& toPos, bool checkLineOfSight /*= true*/,
int32_t rangex /*= Map::maxClientViewportX*/, int32_t rangey /*= Map::maxClientViewportY*/)
{
//z checks
//underground 8->15
//ground level and above 7->0
if((fromPos.z >= 8 && toPos.z < 8) || (toPos.z >= 8 && fromPos.z < 8))
return false;
if(fromPos.z - fromPos.z > 2)
return false;
int deltax, deltay, deltaz;
deltax = std::abs(fromPos.x - toPos.x);
deltay = std::abs(fromPos.y - toPos.y);
deltaz = std::abs(fromPos.z - toPos.z);
//distance checks
if(deltax - deltaz > rangex || deltay - deltaz > rangey)
return false;
if(!checkLineOfSight)
return true;
return isSightClear(fromPos, toPos, false);
}
bool Map::checkSightLine(const Position& fromPos, const Position& toPos) const
{
Position start = fromPos;
Position end = toPos;
int32_t x, y, z;
int32_t dx, dy, dz;
int32_t sx, sy, sz;
int32_t ey, ez;
dx = abs(start.x - end.x);
dy = abs(start.y - end.y);
dz = abs(start.z - end.z);
int32_t max = dx, dir = 0;
if(dy > max)
{
max = dy;
dir = 1;
}
if(dz > max)
{
max = dz;
dir = 2;
}
switch(dir)
{
case 0:
//x -> x
//y -> y
//z -> z
break;
case 1:
//x -> y
//y -> x
//z -> z
std::swap(start.x, start.y);
std::swap(end.x, end.y);
std::swap(dx, dy);
break;
case 2:
//x -> z
//y -> y
//z -> x
std::swap(start.x, start.z);
std::swap(end.x, end.z);
std::swap(dx, dz);
break;
}
sx = ((start.x < end.x) ? 1 : -1);
sy = ((start.y < end.y) ? 1 : -1);
sz = ((start.z < end.z) ? 1 : -1);
ey = 0, ez = 0;
x = start.x;
y = start.y;
z = start.z;
int32_t lastrx = 0, lastry = 0, lastrz = 0;
for(; x != end.x + sx; x += sx)
{
int32_t rx, ry, rz;
switch(dir)
{
case 1:
rx = y; ry = x; rz = z;
break;
case 2:
rx = z; ry = y; rz = x;
break;
default:
rx = x; ry = y; rz = z;
break;
}
if(lastrx == 0 && lastry == 0 && lastrz == 0)
{
//first time initialization
lastrx = rx; lastry = ry; lastrz = rz;
}
if(lastrz != rz ||
(!(toPos.x == rx && toPos.y == ry && toPos.z == rz) &&
!(fromPos.x == rx && fromPos.y == ry && fromPos.z == rz)))
{
if(lastrz != rz)
{
if(const_cast<Map*>(this)->getTile(lastrx, lastry, std::min(lastrz, rz)))
return false;
}
lastrx = rx; lastry = ry; lastrz = rz;
const Tile* tile = const_cast<Map*>(this)->getTile(rx, ry, rz);
if(tile)
{
if(tile->hasProperty(BLOCKPROJECTILE))
return false;
}
}
ey += dy;
ez += dz;
if(2*ey >= dx)
{
y += sy;
ey -= dx;
}
if(2*ez >= dx)
{
z += sz;
ez -= dx;
}
}
return true;
}
bool Map::isSightClear(const Position& fromPos, const Position& toPos, bool floorCheck) const
{
if(floorCheck && fromPos.z != toPos.z)
return false;
// Cast two converging rays and see if either yields a result.
return checkSightLine(fromPos, toPos) || checkSightLine(toPos, fromPos);
}
const Tile* Map::canWalkTo(const Creature* creature, const Position& pos)
{
switch(creature->getWalkCache(pos))
{
case 0: return NULL;
case 1: return getTile(pos);
break;
}
//used for none-cached tiles
Tile* tile = getTile(pos);
if(creature->getTile() != tile)
{
if(!tile || tile->__queryAdd(0, creature, 1, FLAG_PATHFINDING | FLAG_IGNOREFIELDDAMAGE) != RET_NOERROR)
return NULL;
}
return tile;
}
bool Map::getPathTo(const Creature* creature, const Position& destPos,
std::list<Direction>& listDir, int32_t maxSearchDist /*= -1*/)
{
if(canWalkTo(creature, destPos) == NULL)
return false;
listDir.clear();
Position startPos = destPos;
Position endPos = creature->getPosition();
if(startPos.z != endPos.z)
return false;
AStarNodes nodes;
AStarNode* startNode = nodes.createOpenNode();
startNode->x = startPos.x;
startNode->y = startPos.y;
startNode->g = 0;
startNode->h = nodes.getEstimatedDistance(startPos.x, startPos.y, endPos.x, endPos.y);
startNode->f = startNode->g + startNode->h;
startNode->parent = NULL;
Position pos;
pos.z = startPos.z;
static int32_t neighbourOrderList[8][2] =
{
{-1, 0},
{0, 1},
{1, 0},
{0, -1},
//diagonal
{-1, -1},
{1, -1},
{1, 1},
{-1, 1},
};
const Tile* tile = NULL;
AStarNode* found = NULL;
while(maxSearchDist != -1 || nodes.countClosedNodes() < 100)
{
AStarNode* n = nodes.getBestNode();
if(!n)
{
listDir.clear();
return false; //no path found
}
if(n->x == endPos.x && n->y == endPos.y)
{
found = n;
break;
}
else
{
for(int i = 0; i < 8; ++i)
{
pos.x = n->x + neighbourOrderList[i][0];
pos.y = n->y + neighbourOrderList[i][1];
bool outOfRange = false;
if(maxSearchDist != -1 && (std::abs(endPos.x - pos.x) > maxSearchDist ||
std::abs(endPos.y - pos.y) > maxSearchDist))
{
outOfRange = true;
}
if(!outOfRange && (tile = canWalkTo(creature, pos)))
{
//The cost (g) for this neighbour
int32_t cost = nodes.getMapWalkCost(creature, n, tile, pos);
int32_t extraCost = nodes.getTileWalkCost(creature, tile);
int32_t newg = n->g + cost + extraCost;
//Check if the node is already in the closed/open list
//If it exists and the nodes already on them has a lower cost (g) then we can ignore this neighbour node
AStarNode* neighbourNode = nodes.getNodeInList(pos.x, pos.y);
if(neighbourNode)
{
if(neighbourNode->g <= newg)
{
//The node on the closed/open list is cheaper than this one
continue;
}
nodes.openNode(neighbourNode);
}
else
{
//Does not exist in the open/closed list, create a new node
neighbourNode = nodes.createOpenNode();
if(!neighbourNode)
{
//seems we ran out of nodes
listDir.clear();
return false;
}
}
//This node is the best node so far with this state
neighbourNode->x = pos.x;
neighbourNode->y = pos.y;
neighbourNode->parent = n;
neighbourNode->g = newg;
neighbourNode->h = nodes.getEstimatedDistance(neighbourNode->x, neighbourNode->y,
endPos.x, endPos.y);
neighbourNode->f = neighbourNode->g + neighbourNode->h;
}
}
nodes.closeNode(n);
}
}
int32_t prevx = endPos.x;
int32_t prevy = endPos.y;
int32_t dx, dy;
while(found)
{
pos.x = found->x;
pos.y = found->y;
found = found->parent;
dx = pos.x - prevx;
dy = pos.y - prevy;
prevx = pos.x;
prevy = pos.y;
if(dx == -1 && dy == -1)
listDir.push_back(NORTHWEST);
else if(dx == 1 && dy == -1)
listDir.push_back(NORTHEAST);
else if(dx == -1 && dy == 1)
listDir.push_back(SOUTHWEST);
else if(dx == 1 && dy == 1)
listDir.push_back(SOUTHEAST);
else if(dx == -1)
listDir.push_back(WEST);
else if(dx == 1)
listDir.push_back(EAST);
else if(dy == -1)
listDir.push_back(NORTH);
else if(dy == 1)
listDir.push_back(SOUTH);
}
return !listDir.empty();
}
bool Map::getPathMatching(const Creature* creature, std::list<Direction>& dirList,
const FrozenPathingConditionCall& pathCondition, const FindPathParams& fpp)
{
dirList.clear();
Position startPos = creature->getPosition();
Position endPos;
AStarNodes nodes;
AStarNode* startNode = nodes.createOpenNode();
startNode->x = startPos.x;
startNode->y = startPos.y;
startNode->f = 0;
startNode->parent = NULL;
Position pos;
pos.z = startPos.z;
int32_t bestMatch = 0;
static int32_t neighbourOrderList[8][2] =
{
{-1, 0},
{0, 1},
{1, 0},
{0, -1},
//diagonal
{-1, -1},
{1, -1},
{1, 1},
{-1, 1},
};
const Tile* tile = NULL;
AStarNode* found = NULL;
while(fpp.maxSearchDist != -1 || nodes.countClosedNodes() < 100)
{
AStarNode* n = nodes.getBestNode();
if(!n)
{
if(found)
{
//not quite what we want, but we found something
break;
}
dirList.clear();
return false; //no path found
}
if(pathCondition(startPos, Position(n->x, n->y, startPos.z), fpp, bestMatch))
{
found = n;
endPos = Position(n->x, n->y, startPos.z);
if(bestMatch == 0)
break;
}
int32_t dirCount = (fpp.allowDiagonal ? 8 : 4);
for(int32_t i = 0; i < dirCount; ++i)
{
pos.x = n->x + neighbourOrderList[i][0];
pos.y = n->y + neighbourOrderList[i][1];
bool inRange = true;
if(fpp.maxSearchDist != -1 && (std::abs(startPos.x - pos.x) > fpp.maxSearchDist ||
std::abs(startPos.y - pos.y) > fpp.maxSearchDist))
{
inRange = false;
}
if(fpp.keepDistance)
{
if(!pathCondition.isInRange(startPos, pos, fpp))
inRange = false;
}
if(inRange && (tile = canWalkTo(creature, pos)))
{
//The cost (g) for this neighbour
int32_t cost = nodes.getMapWalkCost(creature, n, tile, pos);
int32_t extraCost = nodes.getTileWalkCost(creature, tile);
int32_t newf = n->f + cost + extraCost;
//Check if the node is already in the closed/open list
//If it exists and the nodes already on them has a lower cost (g) then we can ignore this neighbour node
AStarNode* neighbourNode = nodes.getNodeInList(pos.x, pos.y);
if(neighbourNode)
{
if(neighbourNode->f <= newf)
{
//The node on the closed/open list is cheaper than this one
continue;
}
nodes.openNode(neighbourNode);
}
else
{
//Does not exist in the open/closed list, create a new node
neighbourNode = nodes.createOpenNode();
if(!neighbourNode)
{
if(found)
{
//not quite what we want, but we found something
break;
}
//seems we ran out of nodes
dirList.clear();
return false;
}
}
//This node is the best node so far with this state
neighbourNode->x = pos.x;
neighbourNode->y = pos.y;
neighbourNode->parent = n;
neighbourNode->f = newf;
}
}
nodes.closeNode(n);
}
int32_t prevx = endPos.x;
int32_t prevy = endPos.y;
int32_t dx, dy;
if(!found)
return false;
found = found->parent;
while(found)
{
pos.x = found->x;
pos.y = found->y;
dx = pos.x - prevx;
dy = pos.y - prevy;
prevx = pos.x;
prevy = pos.y;