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,
80 // This is set to the number of the actual values in this enum
84 extern u16 g_content_tiles[USEFUL_CONTENT_COUNT][6];
85 extern const char * g_content_inventory_textures[USEFUL_CONTENT_COUNT];
88 If true, the material allows light propagation and brightness is stored
91 inline bool light_propagates_content(u8 m)
93 return (m == CONTENT_AIR || m == CONTENT_TORCH || m == CONTENT_WATER || m == CONTENT_OCEAN);
97 If true, the material allows lossless sunlight propagation.
99 inline bool sunlight_propagates_content(u8 m)
101 return (m == CONTENT_AIR || m == CONTENT_TORCH);
105 On a node-node surface, the material of the node with higher solidness
111 inline u8 content_solidness(u8 m)
113 // As of now, every pseudo node like torches are added to this
114 if(m == CONTENT_AIR || m == CONTENT_TORCH)
116 if(m == CONTENT_WATER || m == CONTENT_OCEAN)
121 // Objects collide with walkable contents
122 inline bool content_walkable(u8 m)
124 return (m != CONTENT_AIR && m != CONTENT_WATER && m != CONTENT_OCEAN && m != CONTENT_TORCH);
127 // A liquid resists fast movement
128 inline bool content_liquid(u8 m)
130 return (m == CONTENT_WATER || m == CONTENT_OCEAN);
133 // Pointable contents can be pointed to in the map
134 inline bool content_pointable(u8 m)
136 return (m != CONTENT_AIR && m != CONTENT_WATER && m != CONTENT_OCEAN);
139 inline bool content_diggable(u8 m)
141 return (m != CONTENT_AIR && m != CONTENT_WATER && m != CONTENT_OCEAN);
144 inline bool content_buildable_to(u8 m)
146 return (m == CONTENT_AIR || m == CONTENT_WATER || m == CONTENT_OCEAN);
150 Returns true for contents that form the base ground that
151 follows the main heightmap
153 inline bool is_ground_content(u8 m)
156 m == CONTENT_STONE ||
157 m == CONTENT_GRASS ||
158 m == CONTENT_GRASS_FOOTSTEPS ||
164 /*inline bool content_has_faces(u8 c)
166 return (m != CONTENT_IGNORE
168 && m != CONTENT_TORCH);
172 Nodes make a face if contents differ and solidness differs.
175 1: Face uses m1's content
176 2: Face uses m2's content
178 inline u8 face_contents(u8 m1, u8 m2)
180 if(m1 == CONTENT_IGNORE || m2 == CONTENT_IGNORE)
183 bool contents_differ = (m1 != m2);
184 bool solidness_differs = (content_solidness(m1) != content_solidness(m2));
185 bool makes_face = contents_differ && solidness_differs;
187 if(makes_face == false)
190 if(content_solidness(m1) > content_solidness(m2))
196 inline bool liquid_replaces_content(u8 c)
198 return (c == CONTENT_AIR || c == CONTENT_TORCH);
202 When placing a node, drection info is added to it if this is true
204 inline bool content_directional(u8 c)
206 return (c == CONTENT_TORCH);
210 Packs directions like (1,0,0), (1,-1,0)
212 inline u8 packDir(v3s16 dir)
233 inline v3s16 unpackDir(u8 b)
255 inline u16 content_tile(u8 c, v3s16 dir)
257 if(c == CONTENT_IGNORE || c == CONTENT_AIR
258 || c >= USEFUL_CONTENT_COUNT)
263 if(dir == v3s16(0,1,0))
265 else if(dir == v3s16(0,-1,0))
267 else if(dir == v3s16(1,0,0))
269 else if(dir == v3s16(-1,0,0))
271 else if(dir == v3s16(0,0,1))
273 else if(dir == v3s16(0,0,-1))
280 return g_content_tiles[c][dir_i];
295 Misc parameter. Initialized to 0.
296 - For light_propagates() blocks, this is light intensity,
297 stored logarithmically from 0 to LIGHT_MAX.
298 Sunlight is LIGHT_SUN, which is LIGHT_MAX+1.
310 Direction for torches and other stuff.
311 If possible, packed with packDir.
316 MapNode(const MapNode & n)
321 MapNode(u8 data=CONTENT_AIR, u8 a_param=0, u8 a_pressure=0)
325 pressure = a_pressure;
328 bool operator==(const MapNode &other)
331 && param == other.param
332 && pressure == other.pressure);
335 bool light_propagates()
337 return light_propagates_content(d);
340 bool sunlight_propagates()
342 return sunlight_propagates_content(d);
347 return content_solidness(d);
353 Note that a block that isn't light_propagates() can be a light source.
355 if(d == CONTENT_TORCH)
361 u8 getLightBanksWithSource()
363 // Select the brightest of [light source, propagated light]
366 if(light_propagates())
368 lightday = param & 0x0f;
369 lightnight = (param>>4)&0x0f;
371 if(light_source() > lightday)
372 lightday = light_source();
373 if(light_source() > lightnight)
374 lightnight = light_source();
375 return (lightday&0x0f) | ((lightnight<<4)&0xf0);
378 void setLightBanks(u8 a_light)
383 u8 getLight(enum LightBank bank)
385 // Select the brightest of [light source, propagated light]
387 if(light_propagates())
389 if(bank == LIGHTBANK_DAY)
390 light = param & 0x0f;
391 else if(bank == LIGHTBANK_NIGHT)
392 light = (param>>4)&0x0f;
396 if(light_source() > light)
397 light = light_source();
401 // 0 <= daylight_factor <= 1000
402 // 0 <= return value <= LIGHT_SUN
403 u8 getLightBlend(u32 daylight_factor)
405 u8 l = ((daylight_factor * getLight(LIGHTBANK_DAY)
406 + (1000-daylight_factor) * getLight(LIGHTBANK_NIGHT))
409 if(getLight(LIGHTBANK_DAY) == LIGHT_SUN)
415 /*// 0 <= daylight_factor <= 1000
416 // 0 <= return value <= 255
417 u8 getLightBlend(u32 daylight_factor)
419 u8 daylight = decode_light(getLight(LIGHTBANK_DAY));
420 u8 nightlight = decode_light(getLight(LIGHTBANK_NIGHT));
421 u8 mix = ((daylight_factor * daylight
422 + (1000-daylight_factor) * nightlight)
427 void setLight(enum LightBank bank, u8 a_light)
429 // If not transparent, can't set light
430 if(light_propagates() == false)
432 if(bank == LIGHTBANK_DAY)
435 param |= a_light & 0x0f;
437 else if(bank == LIGHTBANK_NIGHT)
440 param |= (a_light & 0x0f)<<4;
446 u16 getTile(v3s16 dir)
448 return content_tile(d, dir);
452 These serialization functions are used when informing client
456 static u32 serializedLength(u8 version)
458 if(!ser_ver_supported(version))
459 throw VersionMismatchException("ERROR: MapNode format not supported");
463 else if(version <= 9)
468 void serialize(u8 *dest, u8 version)
470 if(!ser_ver_supported(version))
471 throw VersionMismatchException("ERROR: MapNode format not supported");
477 else if(version <= 9)
489 void deSerialize(u8 *source, u8 version)
491 if(!ser_ver_supported(version))
492 throw VersionMismatchException("ERROR: MapNode format not supported");
498 else if(version == 1)
501 // This version doesn't support saved lighting
502 if(light_propagates() || light_source() > 0)
507 else if(version <= 9)
516 pressure = source[2];
522 Returns integer position of the node in given
523 floating point position.
525 inline v3s16 floatToInt(v3f p)
528 (p.X + (p.X>0 ? BS/2 : -BS/2))/BS,
529 (p.Y + (p.Y>0 ? BS/2 : -BS/2))/BS,
530 (p.Z + (p.Z>0 ? BS/2 : -BS/2))/BS);
534 inline v3f intToFloat(v3s16 p)