mirror of
https://github.com/worldforge/cyphesis
synced 2026-08-13 12:26:04 -04:00
248 lines
7.4 KiB
C++
248 lines
7.4 KiB
C++
// Cyphesis Online RPG Server and AI Engine
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// Copyright (C) 2000,2001 Alistair Riddoch
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software Foundation,
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// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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// $Id$
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#include "LocatedEntity.h"
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#include "Script.h"
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#include "AtlasProperties.h"
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#include "common/Property.h"
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#include "common/TypeNode.h"
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using Atlas::Message::Element;
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using Atlas::Message::MapType;
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/// \brief Set of attribute names which must not be changed
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///
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/// The attributes named are special and are modified using high level
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/// operations, such as Move, not via Set operations, or assigned by
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/// normal means.
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std::set<std::string> LocatedEntity::m_immutable;
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/// \brief Singleton accessor for immutables
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///
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/// The immutable attribute set m_immutables is initialised if necessary,
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/// and a reference is returned.
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const std::set<std::string> & LocatedEntity::immutables()
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{
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if (m_immutable.empty()) {
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m_immutable.insert("parents");
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m_immutable.insert("pos");
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m_immutable.insert("loc");
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m_immutable.insert("velocity");
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m_immutable.insert("orientation");
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m_immutable.insert("contains");
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m_immutable.insert("objtype");
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}
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return m_immutable;
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}
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/// \brief LocatedEntity constructor
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LocatedEntity::LocatedEntity(const std::string & id, long intId) :
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Router(id, intId),
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m_refCount(0), m_seq(0),
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m_script(0), m_type(0), m_contains(0)
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{
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m_properties["id"] = new IdProperty(getId());
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}
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LocatedEntity::~LocatedEntity()
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{
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PropertyDict::const_iterator I = m_properties.begin();
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PropertyDict::const_iterator Iend = m_properties.end();
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for (; I != Iend; ++I) {
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delete I->second;
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}
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delete m_script;
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if (m_location.m_loc != 0) {
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m_location.m_loc->decRef();
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}
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if (m_contains != 0) {
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delete m_contains;
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}
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}
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/// \brief Check if this entity has a property with the given name
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///
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/// @param name Name of attribute to be checked
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/// @return trye if this entity has an attribute with the name given
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/// false otherwise
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bool LocatedEntity::hasAttr(const std::string & name) const
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{
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PropertyDict::const_iterator I = m_properties.find(name);
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if (I != m_properties.end()) {
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return true;
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}
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if (m_type != 0) {
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I = m_type->defaults().find(name);
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if (I != m_type->defaults().end()) {
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return true;
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}
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}
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return false;
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}
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/// \brief Get the value of an attribute
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///
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/// @param name Name of attribute to be retrieved
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/// @param attr Reference used to store value
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/// @return zero if this entity has an attribute with the name given
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/// nonzero otherwise
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int LocatedEntity::getAttr(const std::string & name,
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Element & attr) const
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{
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PropertyDict::const_iterator I = m_properties.find(name);
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if (I != m_properties.end()) {
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return I->second->get(attr);
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}
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if (m_type != 0) {
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I = m_type->defaults().find(name);
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if (I != m_type->defaults().end()) {
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return I->second->get(attr);
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}
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}
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return -1;
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}
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/// \brief Get the value of an attribute if it is the right type
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///
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/// @param name Name of attribute to be retrieved
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/// @param attr Reference used to store value
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/// @return zero if this entity has an attribute with the name given
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/// nonzero otherwise
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int LocatedEntity::getAttrType(const std::string & name,
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Element & attr,
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int type) const
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{
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PropertyDict::const_iterator I = m_properties.find(name);
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if (I != m_properties.end()) {
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return I->second->get(attr) || (attr.getType() == type ? 0 : 1);
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}
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if (m_type != 0) {
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I = m_type->defaults().find(name);
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if (I != m_type->defaults().end()) {
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return I->second->get(attr) || (attr.getType() == type ? 0 : 1);
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}
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}
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return -1;
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}
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/// \brief Set the value of an attribute
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///
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/// @param name Name of attribute to be changed
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/// @param attr Value to be stored
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PropertyBase * LocatedEntity::setAttr(const std::string & name,
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const Element & attr)
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{
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PropertyDict::const_iterator I = m_properties.find(name);
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if (I != m_properties.end()) {
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I->second->set(attr);
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return I->second;
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}
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return m_properties[name] = new SoftProperty(attr);
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}
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/// \brief Get the property object for a given attribute
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///
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/// @param name name of the attribute for which the property is required.
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/// @return a pointer to the property, or zero if the attributes does
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/// not exist, or is not stored using a property object.
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const PropertyBase * LocatedEntity::getProperty(const std::string & name) const
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{
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PropertyDict::const_iterator I = m_properties.find(name);
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if (I != m_properties.end()) {
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return I->second;
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}
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return 0;
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}
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/// \brief Called when the container of this entity changes.
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///
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void LocatedEntity::onContainered()
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{
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}
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/// \brief Called when the properties of this entity change.
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///
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void LocatedEntity::onUpdated()
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{
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}
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/// \brief Associate a script with this entity
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///
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/// The previously associated script is deleted.
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/// @param scrpt Pointer to the script to be associated with this entity
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void LocatedEntity::setScript(Script * scrpt)
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{
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delete m_script;
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m_script = scrpt;
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}
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/// \brief Make this entity a container
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///
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/// If this entity is not already a contains, set up the necessary
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/// storage and property.
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void LocatedEntity::makeContainer()
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{
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if (m_contains == 0) {
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m_contains = new LocatedEntitySet;
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m_properties["contains"] = new ContainsProperty(*m_contains);
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}
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}
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/// \brief Change the container of an entity
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///
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/// @param new_loc The entity which is to become this entities new
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/// container.
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void LocatedEntity::changeContainer(LocatedEntity * new_loc)
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{
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assert(m_location.m_loc != 0);
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assert(m_location.m_loc->m_contains != 0);
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m_location.m_loc->m_contains->erase(this);
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if (m_location.m_loc->m_contains->empty()) {
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m_location.m_loc->onUpdated();
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}
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new_loc->makeContainer();
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bool was_empty = new_loc->m_contains->empty();
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new_loc->m_contains->insert(this);
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if (was_empty) {
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new_loc->onUpdated();
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}
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assert(m_location.m_loc->checkRef() > 0);
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m_location.m_loc->decRef();
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m_location.m_loc = new_loc;
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m_location.m_loc->incRef();
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assert(m_location.m_loc->checkRef() > 0);
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onContainered();
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}
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/// \brief Read attributes from an Atlas element
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///
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/// @param ent The Atlas map element containing the attribute values
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void LocatedEntity::merge(const MapType & ent)
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{
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const std::set<std::string> & imm = immutables();
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MapType::const_iterator Iend = ent.end();
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for (MapType::const_iterator I = ent.begin(); I != Iend; ++I) {
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const std::string & key = I->first;
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if (imm.find(key) != imm.end()) continue;
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setAttr(key, I->second);
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}
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}
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