summaryrefslogtreecommitdiff
path: root/src/remoteplayer.cpp
blob: 2dbfe9d9d964021c493459a730e3a2432f90b082 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
/*
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;
}