3 Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #ifndef SERVEROBJECT_HEADER
21 #define SERVEROBJECT_HEADER
23 #include "common_irrlicht.h"
24 #include "activeobject.h"
32 * Server environment adds an active object, which gets the id 1
33 * The active object list is scanned for each client once in a while,
34 and it finds out what objects have been added that are not known
35 by the client yet. This scan is initiated by the Server class and
36 the result ends up directly to the server.
37 * A network packet is created with the info and sent to the client.
38 * Environment converts objects to static data and static data to
39 objects, based on how close players are to them.
52 dtime: time from last call to this method
53 wanted_interval: interval wanted
55 true: action should be skipped
56 false: action should be done and dtime has been set
58 bool step(float &dtime, float wanted_interval)
61 if(accumulator < wanted_interval)
66 accumulator -= wanted-interval;
67 dtime = wanted_interval;
75 class ServerEnvironment;
78 class ServerActiveObject : public ActiveObject
81 ServerActiveObject(ServerEnvironment *env, u16 id, v3f pos);
82 virtual ~ServerActiveObject();
84 // Create a certain type of ServerActiveObject
85 static ServerActiveObject* create(u8 type,
86 ServerEnvironment *env, u16 id, v3f pos,
87 const std::string &data);
90 Some simple getters/setters
93 {return m_base_position;}
94 void setBasePosition(v3f pos)
95 {m_base_position = pos;}
96 ServerEnvironment* getEnv()
101 Messages added to messages are sent to client over network.
104 True at around 5 times a second, same for all objects.
105 This is used to let objects send most of the data at the
106 same time so that the data can be combined in a single
109 virtual void step(float dtime, Queue<ActiveObjectMessage> &messages,
110 bool send_recommended){}
113 The return value of this is passed to the client-side object
116 virtual std::string getClientInitializationData(){return "";}
119 The return value of this is passed to the server-side object
120 when it is created (converted from static to active - actually
121 the data is the static form)
123 virtual std::string getStaticData(){return "";}
126 Item that the player gets when this object is picked up.
127 If NULL, object cannot be picked up.
129 virtual InventoryItem* createPickedUpItem(){return NULL;}
131 // Number of players which know about this object
132 u16 m_known_by_count;
134 - Whether this object is to be removed when nobody knows about
136 - Removal is delayed to preserve the id for the time during which
137 it could be confused to some other object by some client.
138 - This is set to true by the step() method when the object wants
140 - This can be set to true by anything else too.
145 Whether the object's static data has been stored to a block
147 bool m_static_exists;
149 The block from which the object was loaded from, and in which
150 a copy of the static data resides.
152 v3s16 m_static_block;
155 // Used for creating objects based on type
156 typedef ServerActiveObject* (*Factory)
157 (ServerEnvironment *env, u16 id, v3f pos,
158 const std::string &data);
159 static void registerType(u16 type, Factory f);
161 ServerEnvironment *m_env;
165 // Used for creating objects based on type
166 static core::map<u16, Factory> m_types;
169 class TestSAO : public ServerActiveObject
172 TestSAO(ServerEnvironment *env, u16 id, v3f pos);
174 {return ACTIVEOBJECT_TYPE_TEST;}
175 static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
176 const std::string &data);
177 void step(float dtime, Queue<ActiveObjectMessage> &messages,
178 bool send_recommended);
184 class ItemSAO : public ServerActiveObject
187 ItemSAO(ServerEnvironment *env, u16 id, v3f pos,
188 const std::string inventorystring);
190 {return ACTIVEOBJECT_TYPE_ITEM;}
191 static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
192 const std::string &data);
193 void step(float dtime, Queue<ActiveObjectMessage> &messages,
194 bool send_recommended);
195 std::string getClientInitializationData();
196 std::string getStaticData();
197 InventoryItem* createInventoryItem();
198 InventoryItem* createPickedUpItem(){return createInventoryItem();}
200 std::string m_inventorystring;
202 v3f m_last_sent_position;
205 class RatSAO : public ServerActiveObject
208 RatSAO(ServerEnvironment *env, u16 id, v3f pos);
210 {return ACTIVEOBJECT_TYPE_RAT;}
211 static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
212 const std::string &data);
213 void step(float dtime, Queue<ActiveObjectMessage> &messages,
214 bool send_recommended);
215 std::string getClientInitializationData();
216 std::string getStaticData();
217 InventoryItem* createPickedUpItem();
221 v3f m_last_sent_position;
226 bool m_touching_ground;