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 MAPNODE_HEADER
21 #define MAPNODE_HEADER
23 #include "irrlichttypes.h"
26 class INodeDefManager;
30 - Material = irrlicht's Material class
31 - Content = (content_t) content of a node
32 - Tile = TileSpec at some side of a node of some content type
35 0x000...0x07f: param2 is fully usable
36 0x800...0xfff: param2 lower 4 bits are free
38 typedef u16 content_t;
39 #define MAX_CONTENT 0xfff
44 Anything that stores MapNodes doesn't have to preserve parameters
45 associated with this material.
47 Doesn't create faces with anything and is considered being
48 out-of-map in the game map.
50 #define CONTENT_IGNORE 127
51 #define CONTENT_IGNORE_DEFAULT_PARAM 0
54 The common material through which the player can walk and which
55 is transparent to light
57 #define CONTENT_AIR 126
66 Masks for MapNode.param2 of flowing liquids
68 #define LIQUID_LEVEL_MASK 0x07
69 #define LIQUID_FLOW_DOWN_MASK 0x08
71 /* maximum amount of liquid in a block */
72 #define LIQUID_LEVEL_MAX LIQUID_LEVEL_MASK
73 #define LIQUID_LEVEL_SOURCE (LIQUID_LEVEL_MAX+1)
76 This is the stuff what the whole world consists of.
84 0x00-0x7f: Short content type
85 0x80-0xff: Long content type (param2>>4 makes up low bytes)
90 Misc parameter. Initialized to 0.
91 - For light_propagates() blocks, this is light intensity,
92 stored logarithmically from 0 to LIGHT_MAX.
93 Sunlight is LIGHT_SUN, which is LIGHT_MAX+1.
94 - Contains 2 values, day- and night lighting. Each takes 4 bits.
95 - Uhh... well, most blocks have light or nothing in here.
100 The second parameter. Initialized to 0.
101 E.g. direction for torches and flowing water.
102 If param0 >= 0x80, bits 0xf0 of this is extended content type data
106 MapNode(const MapNode & n)
111 MapNode(content_t content=CONTENT_AIR, u8 a_param1=0, u8 a_param2=0)
115 // Set content (param0 and (param2&0xf0)) after other params
116 // because this needs to override part of param2
120 // Create directly from a nodename
121 // If name is unknown, sets CONTENT_IGNORE
122 MapNode(INodeDefManager *ndef, const std::string &name,
123 u8 a_param1=0, u8 a_param2=0);
125 bool operator==(const MapNode &other)
127 return (param0 == other.param0
128 && param1 == other.param1
129 && param2 == other.param2);
132 // To be used everywhere
133 content_t getContent() const
138 return (param0<<4) + (param2>>4);
140 void setContent(content_t c)
152 param2 |= (c&0x0f)<<4;
168 return param2 & 0x0f;
180 void setLight(enum LightBank bank, u8 a_light, INodeDefManager *nodemgr);
181 u8 getLight(enum LightBank bank, INodeDefManager *nodemgr) const;
182 bool getLightBanks(u8 &lightday, u8 &lightnight, INodeDefManager *nodemgr) const;
184 // 0 <= daylight_factor <= 1000
185 // 0 <= return value <= LIGHT_SUN
186 u8 getLightBlend(u32 daylight_factor, INodeDefManager *nodemgr) const
190 getLightBanks(lightday, lightnight, nodemgr);
191 return blend_light(daylight_factor, lightday, lightnight);
194 u8 getFaceDir(INodeDefManager *nodemgr) const;
195 u8 getWallMounted(INodeDefManager *nodemgr) const;
196 v3s16 getWallMountedDir(INodeDefManager *nodemgr) const;
199 Serialization functions
202 static u32 serializedLength(u8 version);
203 void serialize(u8 *dest, u8 version);
204 void deSerialize(u8 *source, u8 version);
206 // Serializes or deserializes a list of nodes in bulk format (first the
207 // content of all nodes, then the param1 of all nodes, then the param2
209 // version = serialization version. Must be >= 22
210 // content_width = the number of bytes of content per node
211 // params_width = the number of bytes of params per node
212 // compressed = true to zlib-compress output
213 static void serializeBulk(std::ostream &os, int version,
214 const MapNode *nodes, u32 nodecount,
215 u8 content_width, u8 params_width, bool compressed);
216 static void deSerializeBulk(std::istream &is, int version,
217 MapNode *nodes, u32 nodecount,
218 u8 content_width, u8 params_width, bool compressed);
221 // Deprecated serialization methods
222 void serialize_pre22(u8 *dest, u8 version);
223 void deSerialize_pre22(u8 *source, u8 version);
228 MapNode helpers for mesh making stuff
234 Nodes make a face if contents differ and solidness differs.
237 1: Face uses m1's content
238 2: Face uses m2's content
239 equivalent: Whether the blocks share the same face (eg. water and glass)
241 u8 face_contents(content_t m1, content_t m2, bool *equivalent,
242 INodeDefManager *nodemgr);
245 Gets lighting value at face of node
247 Parameters must consist of air and !air.
248 Order doesn't matter.
250 If either of the nodes doesn't exist, light is 0.
253 daynight_ratio: 0...1000
254 n: getNode(p) (uses only the lighting value)
255 n2: getNode(p + face_dir) (uses only the lighting value)
256 face_dir: axis oriented unit vector from p to p2
258 returns encoded light value.
260 u8 getFaceLight(u32 daynight_ratio, MapNode n, MapNode n2,
261 v3s16 face_dir, INodeDefManager *nodemgr);