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/*
Minetest
Copyright (C) 2010-2016 celeron55, Perttu Ahola <celeron55@gmail.com>
Copyright (C) 2014-2016 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "remoteplayer.h"
#include <json/json.h>
#include "content_sao.h"
#include "filesys.h"
#include "gamedef.h"
#include "porting.h" // strlcpy
#include "server.h"
#include "settings.h"
/*
RemotePlayer
*/
// static config cache for remoteplayer
bool RemotePlayer::m_setting_cache_loaded = false;
float RemotePlayer::m_setting_chat_message_limit_per_10sec = 0.0f;
u16 RemotePlayer::m_setting_chat_message_limit_trigger_kick = 0;
RemotePlayer::RemotePlayer(const char *name, IItemDefManager *idef):
Player(name, idef),
protocol_version(0),
m_sao(NULL),
m_dirty(false),
m_last_chat_message_sent(time(NULL)),
m_chat_message_allowance(5.0f),
m_message_rate_overhead(0),
hud_hotbar_image(""),
hud_hotbar_selected_image("")
{
if (!RemotePlayer::m_setting_cache_loaded) {
RemotePlayer::m_setting_chat_message_limit_per_10sec =
g_settings->getFloat("chat_message_limit_per_10sec");
RemotePlayer::m_setting_chat_message_limit_trigger_kick =
g_settings->getU16("chat_message_limit_trigger_kick");
RemotePlayer::m_setting_cache_loaded = true;
}
movement_acceleration_default = g_settings->getFloat("movement_acceleration_default") * BS;
movement_acceleration_air = g_settings->getFloat("movement_acceleration_air") * BS;
movement_acceleration_fast = g_settings->getFloat("movement_acceleration_fast") * BS;
movement_speed_walk = g_settings->getFloat("movement_speed_walk") * BS;
movement_speed_crouch = g_settings->getFloat("movement_speed_crouch") * BS;
movement_speed_fast = g_settings->getFloat("movement_speed_fast") * BS;
movement_speed_climb = g_settings->getFloat("movement_speed_climb") * BS;
movement_speed_jump = g_settings->getFloat("movement_speed_jump") * BS;
movement_liquid_fluidity = g_settings->getFloat("movement_liquid_fluidity") * BS;
movement_liquid_fluidity_smooth = g_settings->getFloat("movement_liquid_fluidity_smooth") * BS;
movement_liquid_sink = g_settings->getFloat("movement_liquid_sink") * BS;
movement_gravity = g_settings->getFloat("movement_gravity") * BS;
}
void RemotePlayer::serializeExtraAttributes(std::string &output)
{
assert(m_sao);
Json::Value json_root;
const PlayerAttributes &attrs = m_sao->getExtendedAttributes();
for (PlayerAttributes::const_iterator it = attrs.begin(); it != attrs.end(); ++it) {
json_root[(*it).first] = (*it).second;
}
Json::FastWriter writer;
output = writer.write(json_root);
m_sao->setExtendedAttributeModified(false);
}
void RemotePlayer::deSerialize(std::istream &is, const std::string &playername,
PlayerSAO *sao)
{
Settings args;
if (!args.parseConfigLines(is, "PlayerArgsEnd")) {
throw SerializationError("PlayerArgsEnd of player " + playername + " not found!");
}
m_dirty = true;
//args.getS32("version"); // Version field value not used
const std::string &name = args.get("name");
strlcpy(m_name, name.c_str(), PLAYERNAME_SIZE);
if (sao) {
try {
sao->setHPRaw(args.getS32("hp"));
} catch(SettingNotFoundException &e) {
sao->setHPRaw(PLAYER_MAX_HP);
}
try {
sao->setBasePosition(args.getV3F("position"));
} catch (SettingNotFoundException &e) {}
try {
sao->setPitch(args.getFloat("pitch"));
} catch (SettingNotFoundException &e) {}
try {
sao->setYaw(args.getFloat("yaw"));
} catch (SettingNotFoundException &e) {}
try {
sao->setBreath(args.getS32("breath"), false);
} catch (SettingNotFoundException &e) {}
try {
const std::string &extended_attributes = args.get("extended_attributes");
Json::Reader reader;
Json::Value attr_root;
reader.parse(extended_attributes, attr_root);
const Json::Value::Members attr_list = attr_root.getMemberNames();
for (Json::Value::Members::const_iterator it = attr_list.begin();
it != attr_list.end(); ++it) {
Json::Value attr_value = attr_root[*it];
sao->setExtendedAttribute(*it, attr_value.asString());
}
} catch (SettingNotFoundException &e) {}
}
inventory.deSerialize(is);
if (inventory.getList("craftpreview") == NULL) {
// Convert players without craftpreview
inventory.addList("craftpreview", 1);
bool craftresult_is_preview = true;
if(args.exists("craftresult_is_preview"))
craftresult_is_preview = args.getBool("craftresult_is_preview");
if(craftresult_is_preview)
{
// Clear craftresult
inventory.getList("craftresult")->changeItem(0, ItemStack());
}
}
}
void RemotePlayer::serialize(std::ostream &os)
{
// Utilize a Settings object for storing values
Settings args;
args.setS32("version", 1);
args.set("name", m_name);
// This should not happen
assert(m_sao);
args.setS32("hp", m_sao->getHP());
args.setV3F("position", m_sao->getBasePosition());
args.setFloat("pitch", m_sao->getPitch());
args.setFloat("yaw", m_sao->getYaw());
args.setS32("breath", m_sao->getBreath());
std::string extended_attrs = "";
serializeExtraAttributes(extended_attrs);
args.set("extended_attributes", extended_attrs);
args.writeLines(os);
os<<"PlayerArgsEnd\n";
inventory.serialize(os);
}
const RemotePlayerChatResult RemotePlayer::canSendChatMessage()
{
// Rate limit messages
u32 now = time(NULL);
float time_passed = now - m_last_chat_message_sent;
m_last_chat_message_sent = now;
// If this feature is disabled
if (m_setting_chat_message_limit_per_10sec <= 0.0) {
return RPLAYER_CHATRESULT_OK;
}
m_chat_message_allowance += time_passed * (m_setting_chat_message_limit_per_10sec / 8.0f);
if (m_chat_message_allowance > m_setting_chat_message_limit_per_10sec) {
m_chat_message_allowance = m_setting_chat_message_limit_per_10sec;
}
if (m_chat_message_allowance < 1.0f) {
infostream << "Player " << m_name
<< " chat limited due to excessive message amount." << std::endl;
// Kick player if flooding is too intensive
m_message_rate_overhead++;
if (m_message_rate_overhead > RemotePlayer::m_setting_chat_message_limit_trigger_kick) {
return RPLAYER_CHATRESULT_KICK;
}
return RPLAYER_CHATRESULT_FLOODING;
}
// Reinit message overhead
if (m_message_rate_overhead > 0) {
m_message_rate_overhead = 0;
}
m_chat_message_allowance -= 1.0f;
return RPLAYER_CHATRESULT_OK;
}
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