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
82 NOTE: m_env can be NULL, but step() isn't called if it is.
83 Prototypes are used that way.
85 ServerActiveObject(ServerEnvironment *env, u16 id, v3f pos);
86 virtual ~ServerActiveObject();
88 // Create a certain type of ServerActiveObject
89 static ServerActiveObject* create(u8 type,
90 ServerEnvironment *env, u16 id, v3f pos,
91 const std::string &data);
94 Some simple getters/setters
97 {return m_base_position;}
98 void setBasePosition(v3f pos)
99 {m_base_position = pos;}
100 ServerEnvironment* getEnv()
105 Messages added to messages are sent to client over network.
108 True at around 5-10 times a second, same for all objects.
109 This is used to let objects send most of the data at the
110 same time so that the data can be combined in a single
113 virtual void step(float dtime, Queue<ActiveObjectMessage> &messages,
114 bool send_recommended){}
117 The return value of this is passed to the client-side object
120 virtual std::string getClientInitializationData(){return "";}
123 The return value of this is passed to the server-side object
124 when it is created (converted from static to active - actually
125 the data is the static form)
127 virtual std::string getStaticData(){return "";}
130 Item that the player gets when this object is picked up.
131 If NULL, object cannot be picked up.
133 virtual InventoryItem* createPickedUpItem(){return NULL;}
135 // Number of players which know about this object
136 u16 m_known_by_count;
138 - Whether this object is to be removed when nobody knows about
140 - Removal is delayed to preserve the id for the time during which
141 it could be confused to some other object by some client.
142 - This is set to true by the step() method when the object wants
144 - This can be set to true by anything else too.
149 Whether the object's static data has been stored to a block
151 bool m_static_exists;
153 The block from which the object was loaded from, and in which
154 a copy of the static data resides.
156 v3s16 m_static_block;
159 // Used for creating objects based on type
160 typedef ServerActiveObject* (*Factory)
161 (ServerEnvironment *env, u16 id, v3f pos,
162 const std::string &data);
163 static void registerType(u16 type, Factory f);
165 ServerEnvironment *m_env;
169 // Used for creating objects based on type
170 static core::map<u16, Factory> m_types;
173 class TestSAO : public ServerActiveObject
176 TestSAO(ServerEnvironment *env, u16 id, v3f pos);
178 {return ACTIVEOBJECT_TYPE_TEST;}
179 static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
180 const std::string &data);
181 void step(float dtime, Queue<ActiveObjectMessage> &messages,
182 bool send_recommended);
188 class ItemSAO : public ServerActiveObject
191 ItemSAO(ServerEnvironment *env, u16 id, v3f pos,
192 const std::string inventorystring);
194 {return ACTIVEOBJECT_TYPE_ITEM;}
195 static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
196 const std::string &data);
197 void step(float dtime, Queue<ActiveObjectMessage> &messages,
198 bool send_recommended);
199 std::string getClientInitializationData();
200 std::string getStaticData();
201 InventoryItem* createInventoryItem();
202 InventoryItem* createPickedUpItem(){return createInventoryItem();}
204 std::string m_inventorystring;
206 v3f m_last_sent_position;
209 class RatSAO : public ServerActiveObject
212 RatSAO(ServerEnvironment *env, u16 id, v3f pos);
214 {return ACTIVEOBJECT_TYPE_RAT;}
215 static ServerActiveObject* create(ServerEnvironment *env, u16 id, v3f pos,
216 const std::string &data);
217 void step(float dtime, Queue<ActiveObjectMessage> &messages,
218 bool send_recommended);
219 std::string getClientInitializationData();
220 std::string getStaticData();
221 InventoryItem* createPickedUpItem();
225 v3f m_last_sent_position;
230 bool m_touching_ground;