3 Copyright (C) 2010 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
24 #include "common_irrlicht.h"
27 #include "exceptions.h"
28 #include "serialization.h"
31 // Size of node in rendering units
34 #define MATERIALS_COUNT 256
39 Anything that stores MapNodes doesn't have to preserve parameters
40 associated with this material.
42 Doesn't create faces with anything and is considered being
43 out-of-map in the game map.
45 #define CONTENT_IGNORE 255
46 #define CONTENT_IGNORE_DEFAULT_PARAM 0
49 The common material through which the player can walk and which
50 is transparent to light
52 #define CONTENT_AIR 254
57 - Dynamics of gravel: if there is a drop of more than two
58 blocks on any side, it will drop in there. Is this doable?
61 - Material = irrlicht's Material class
62 - Content = (u8) content of a node
63 - Tile = (u16) Material ID at some side of a node
74 CONTENT_GRASS_FOOTSTEPS,
81 // This is set to the number of the actual values in this enum
85 extern u16 g_content_tiles[USEFUL_CONTENT_COUNT][6];
86 extern const char * g_content_inventory_textures[USEFUL_CONTENT_COUNT];
89 If true, the material allows light propagation and brightness is stored
92 inline bool light_propagates_content(u8 m)
94 return (m == CONTENT_AIR || m == CONTENT_TORCH || m == CONTENT_WATER || m == CONTENT_OCEAN);
98 If true, the material allows lossless sunlight propagation.
100 inline bool sunlight_propagates_content(u8 m)
102 return (m == CONTENT_AIR || m == CONTENT_TORCH);
106 On a node-node surface, the material of the node with higher solidness
112 inline u8 content_solidness(u8 m)
114 // As of now, every pseudo node like torches are added to this
115 if(m == CONTENT_AIR || m == CONTENT_TORCH)
117 if(m == CONTENT_WATER || m == CONTENT_OCEAN)
122 // Objects collide with walkable contents
123 inline bool content_walkable(u8 m)
125 return (m != CONTENT_AIR && m != CONTENT_WATER && m != CONTENT_OCEAN && m != CONTENT_TORCH);
128 // A liquid resists fast movement
129 inline bool content_liquid(u8 m)
131 return (m == CONTENT_WATER || m == CONTENT_OCEAN);
134 // Pointable contents can be pointed to in the map
135 inline bool content_pointable(u8 m)
137 return (m != CONTENT_AIR && m != CONTENT_WATER && m != CONTENT_OCEAN);
140 inline bool content_diggable(u8 m)
142 return (m != CONTENT_AIR && m != CONTENT_WATER && m != CONTENT_OCEAN);
145 inline bool content_buildable_to(u8 m)
147 return (m == CONTENT_AIR || m == CONTENT_WATER || m == CONTENT_OCEAN);
151 Returns true for contents that form the base ground that
152 follows the main heightmap
154 inline bool is_ground_content(u8 m)
157 m == CONTENT_STONE ||
158 m == CONTENT_GRASS ||
159 m == CONTENT_GRASS_FOOTSTEPS ||
162 m == CONTENT_COALSTONE
166 inline bool is_mineral(u8 c)
168 return(c == CONTENT_MESE
169 || c == CONTENT_COALSTONE);
172 /*inline bool content_has_faces(u8 c)
174 return (m != CONTENT_IGNORE
176 && m != CONTENT_TORCH);
180 Nodes make a face if contents differ and solidness differs.
183 1: Face uses m1's content
184 2: Face uses m2's content
186 inline u8 face_contents(u8 m1, u8 m2)
188 if(m1 == CONTENT_IGNORE || m2 == CONTENT_IGNORE)
191 bool contents_differ = (m1 != m2);
192 bool solidness_differs = (content_solidness(m1) != content_solidness(m2));
193 bool makes_face = contents_differ && solidness_differs;
195 if(makes_face == false)
198 if(content_solidness(m1) > content_solidness(m2))
204 inline bool liquid_replaces_content(u8 c)
206 return (c == CONTENT_AIR || c == CONTENT_TORCH);
210 When placing a node, drection info is added to it if this is true
212 inline bool content_directional(u8 c)
214 return (c == CONTENT_TORCH);
218 Packs directions like (1,0,0), (1,-1,0)
220 inline u8 packDir(v3s16 dir)
241 inline v3s16 unpackDir(u8 b)
263 inline u16 content_tile(u8 c, v3s16 dir)
265 if(c == CONTENT_IGNORE || c == CONTENT_AIR
266 || c >= USEFUL_CONTENT_COUNT)
271 if(dir == v3s16(0,1,0))
273 else if(dir == v3s16(0,-1,0))
275 else if(dir == v3s16(1,0,0))
277 else if(dir == v3s16(-1,0,0))
279 else if(dir == v3s16(0,0,1))
281 else if(dir == v3s16(0,0,-1))
288 return g_content_tiles[c][dir_i];
303 Misc parameter. Initialized to 0.
304 - For light_propagates() blocks, this is light intensity,
305 stored logarithmically from 0 to LIGHT_MAX.
306 Sunlight is LIGHT_SUN, which is LIGHT_MAX+1.
318 Direction for torches and other stuff.
319 If possible, packed with packDir.
324 MapNode(const MapNode & n)
329 MapNode(u8 data=CONTENT_AIR, u8 a_param=0, u8 a_pressure=0)
333 pressure = a_pressure;
336 bool operator==(const MapNode &other)
339 && param == other.param
340 && pressure == other.pressure);
343 bool light_propagates()
345 return light_propagates_content(d);
348 bool sunlight_propagates()
350 return sunlight_propagates_content(d);
355 return content_solidness(d);
361 Note that a block that isn't light_propagates() can be a light source.
363 if(d == CONTENT_TORCH)
369 u8 getLightBanksWithSource()
371 // Select the brightest of [light source, propagated light]
374 if(light_propagates())
376 lightday = param & 0x0f;
377 lightnight = (param>>4)&0x0f;
379 if(light_source() > lightday)
380 lightday = light_source();
381 if(light_source() > lightnight)
382 lightnight = light_source();
383 return (lightday&0x0f) | ((lightnight<<4)&0xf0);
386 void setLightBanks(u8 a_light)
391 u8 getLight(enum LightBank bank)
393 // Select the brightest of [light source, propagated light]
395 if(light_propagates())
397 if(bank == LIGHTBANK_DAY)
398 light = param & 0x0f;
399 else if(bank == LIGHTBANK_NIGHT)
400 light = (param>>4)&0x0f;
404 if(light_source() > light)
405 light = light_source();
409 // 0 <= daylight_factor <= 1000
410 // 0 <= return value <= LIGHT_SUN
411 u8 getLightBlend(u32 daylight_factor)
413 u8 l = ((daylight_factor * getLight(LIGHTBANK_DAY)
414 + (1000-daylight_factor) * getLight(LIGHTBANK_NIGHT))
417 if(getLight(LIGHTBANK_DAY) == LIGHT_SUN)
423 /*// 0 <= daylight_factor <= 1000
424 // 0 <= return value <= 255
425 u8 getLightBlend(u32 daylight_factor)
427 u8 daylight = decode_light(getLight(LIGHTBANK_DAY));
428 u8 nightlight = decode_light(getLight(LIGHTBANK_NIGHT));
429 u8 mix = ((daylight_factor * daylight
430 + (1000-daylight_factor) * nightlight)
435 void setLight(enum LightBank bank, u8 a_light)
437 // If not transparent, can't set light
438 if(light_propagates() == false)
440 if(bank == LIGHTBANK_DAY)
443 param |= a_light & 0x0f;
445 else if(bank == LIGHTBANK_NIGHT)
448 param |= (a_light & 0x0f)<<4;
454 u16 getTile(v3s16 dir)
456 return content_tile(d, dir);
460 These serialization functions are used when informing client
464 static u32 serializedLength(u8 version)
466 if(!ser_ver_supported(version))
467 throw VersionMismatchException("ERROR: MapNode format not supported");
471 else if(version <= 9)
476 void serialize(u8 *dest, u8 version)
478 if(!ser_ver_supported(version))
479 throw VersionMismatchException("ERROR: MapNode format not supported");
485 else if(version <= 9)
497 void deSerialize(u8 *source, u8 version)
499 if(!ser_ver_supported(version))
500 throw VersionMismatchException("ERROR: MapNode format not supported");
506 else if(version == 1)
509 // This version doesn't support saved lighting
510 if(light_propagates() || light_source() > 0)
515 else if(version <= 9)
524 pressure = source[2];
530 Returns integer position of the node in given
531 floating point position.
533 inline v3s16 floatToInt(v3f p)
536 (p.X + (p.X>0 ? BS/2 : -BS/2))/BS,
537 (p.Y + (p.Y>0 ? BS/2 : -BS/2))/BS,
538 (p.Z + (p.Z>0 ? BS/2 : -BS/2))/BS);
542 inline v3f intToFloat(v3s16 p)