1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
|
/*
Minetest-c55
Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MAPNODE_HEADER
#define MAPNODE_HEADER
#include "irrlichttypes.h"
#include "light.h"
class INodeDefManager;
/*
Naming scheme:
- Material = irrlicht's Material class
- Content = (content_t) content of a node
- Tile = TileSpec at some side of a node of some content type
Content ranges:
0x000...0x07f: param2 is fully usable
0x800...0xfff: param2 lower 4 bytes are free
*/
typedef u16 content_t;
#define MAX_CONTENT 0xfff
/*
Ignored node.
Anything that stores MapNodes doesn't have to preserve parameters
associated with this material.
Doesn't create faces with anything and is considered being
out-of-map in the game map.
*/
#define CONTENT_IGNORE 127
#define CONTENT_IGNORE_DEFAULT_PARAM 0
/*
The common material through which the player can walk and which
is transparent to light
*/
#define CONTENT_AIR 126
#ifndef SERVER
/*
Nodes make a face if contents differ and solidness differs.
Return value:
0: No face
1: Face uses m1's content
2: Face uses m2's content
equivalent: Whether the blocks share the same face (eg. water and glass)
*/
u8 face_contents(content_t m1, content_t m2, bool *equivalent,
INodeDefManager *nodemgr);
#endif
/*
Packs directions like (1,0,0), (1,-1,0) in six bits.
NOTE: This wastes way too much space for most purposes.
*/
u8 packDir(v3s16 dir);
v3s16 unpackDir(u8 b);
/*
facedir: CPT_FACEDIR_SIMPLE param1 value
dir: The face for which stuff is wanted
return value: The face from which the stuff is actually found
NOTE: Currently this uses 2 bits for Z-,X-,Z+,X+, should there be Y+
and Y- too?
*/
v3s16 facedir_rotate(u8 facedir, v3s16 dir);
enum LightBank
{
LIGHTBANK_DAY,
LIGHTBANK_NIGHT
};
/*
Masks for MapNode.param2 of flowing liquids
*/
#define LIQUID_LEVEL_MASK 0x07
#define LIQUID_FLOW_DOWN_MASK 0x08
/* maximum amount of liquid in a block */
#define LIQUID_LEVEL_MAX LIQUID_LEVEL_MASK
#define LIQUID_LEVEL_SOURCE (LIQUID_LEVEL_MAX+1)
/*
This is the stuff what the whole world consists of.
*/
struct MapNode
{
/*
Main content
0x00-0x7f: Short content type
0x80-0xff: Long content type (param2>>4 makes up low bytes)
*/
u8 param0;
/*
Misc parameter. Initialized to 0.
- For light_propagates() blocks, this is light intensity,
stored logarithmically from 0 to LIGHT_MAX.
Sunlight is LIGHT_SUN, which is LIGHT_MAX+1.
- Contains 2 values, day- and night lighting. Each takes 4 bits.
- Mineral content (should be removed from here)
- Uhh... well, most blocks have light or nothing in here.
*/
u8 param1;
/*
The second parameter. Initialized to 0.
E.g. direction for torches and flowing water.
If param0 >= 0x80, bits 0xf0 of this is extended content type data
*/
u8 param2;
MapNode(const MapNode & n)
{
*this = n;
}
MapNode(content_t content=CONTENT_AIR, u8 a_param1=0, u8 a_param2=0)
{
param1 = a_param1;
param2 = a_param2;
// Set content (param0 and (param2&0xf0)) after other params
// because this needs to override part of param2
setContent(content);
}
// Create directly from a nodename
// If name is unknown, sets CONTENT_IGNORE
MapNode(INodeDefManager *ndef, const std::string &name,
u8 a_param1=0, u8 a_param2=0);
bool operator==(const MapNode &other)
{
return (param0 == other.param0
&& param1 == other.param1
&& param2 == other.param2);
}
// To be used everywhere
content_t getContent() const
{
if(param0 < 0x80)
return param0;
else
return (param0<<4) + (param2>>4);
}
void setContent(content_t c)
{
if(c < 0x80)
{
if(param0 >= 0x80)
param2 &= ~(0xf0);
param0 = c;
}
else
{
param0 = c>>4;
param2 &= ~(0xf0);
param2 |= (c&0x0f)<<4;
}
}
u8 getParam1() const
{
return param1;
}
void setParam1(u8 p)
{
param1 = p;
}
u8 getParam2() const
{
if(param0 < 0x80)
return param2;
else
return param2 & 0x0f;
}
void setParam2(u8 p)
{
if(param0 < 0x80)
param2 = p;
else{
param2 &= 0xf0;
param2 |= (p&0x0f);
}
}
void setLight(enum LightBank bank, u8 a_light, INodeDefManager *nodemgr);
u8 getLight(enum LightBank bank, INodeDefManager *nodemgr) const;
u8 getLightBanksWithSource(INodeDefManager *nodemgr) const;
// 0 <= daylight_factor <= 1000
// 0 <= return value <= LIGHT_SUN
u8 getLightBlend(u32 daylight_factor, INodeDefManager *nodemgr) const
{
u8 l = ((daylight_factor * getLight(LIGHTBANK_DAY, nodemgr)
+ (1000-daylight_factor) * getLight(LIGHTBANK_NIGHT, nodemgr))
)/1000;
u8 max = LIGHT_MAX;
if(getLight(LIGHTBANK_DAY, nodemgr) == LIGHT_SUN)
max = LIGHT_SUN;
if(l > max)
l = max;
return l;
}
/*// 0 <= daylight_factor <= 1000
// 0 <= return value <= 255
u8 getLightBlend(u32 daylight_factor, INodeDefManager *nodemgr)
{
u8 daylight = decode_light(getLight(LIGHTBANK_DAY, nodemgr));
u8 nightlight = decode_light(getLight(LIGHTBANK_NIGHT, nodemgr));
u8 mix = ((daylight_factor * daylight
+ (1000-daylight_factor) * nightlight)
)/1000;
return mix;
}*/
/*
Gets mineral content of node, if there is any.
MINERAL_NONE if doesn't contain or isn't able to contain mineral.
*/
u8 getMineral(INodeDefManager *nodemgr) const;
/*
Serialization functions
*/
static u32 serializedLength(u8 version);
void serialize(u8 *dest, u8 version);
void deSerialize(u8 *source, u8 version);
};
/*
Gets lighting value at face of node
Parameters must consist of air and !air.
Order doesn't matter.
If either of the nodes doesn't exist, light is 0.
parameters:
daynight_ratio: 0...1000
n: getNode(p) (uses only the lighting value)
n2: getNode(p + face_dir) (uses only the lighting value)
face_dir: axis oriented unit vector from p to p2
returns encoded light value.
*/
u8 getFaceLight(u32 daynight_ratio, MapNode n, MapNode n2,
v3s16 face_dir, INodeDefManager *nodemgr);
#endif
|
