Add Lua on_mapgen_init callback, and minetest.set_mapgen_params API
[oweals/minetest.git] / src / mapgen_singlenode.cpp
1 /*
2 Minetest
3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
9
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 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser 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.
18 */
19
20 #include "mapgen_singlenode.h"
21 #include "voxel.h"
22 #include "mapblock.h"
23 #include "mapnode.h"
24 #include "map.h"
25 #include "nodedef.h"
26 #include "voxelalgorithms.h"
27 #include "profiler.h"
28 #include "settings.h" // For g_settings
29 #include "main.h" // For g_profiler
30 #include "emerge.h"
31
32 //////////////////////// Mapgen Singlenode parameter read/write
33
34 bool MapgenSinglenodeParams::readParams(Settings *settings) {
35         return true;
36 }
37
38
39 void MapgenSinglenodeParams::writeParams(Settings *settings) {
40 }
41
42 ///////////////////////////////////////////////////////////////////////////////
43
44 MapgenSinglenode::MapgenSinglenode(int mapgenid, MapgenSinglenodeParams *params) {
45         flags = params->flags;
46 }
47
48
49 MapgenSinglenode::~MapgenSinglenode() {
50 }
51
52 //////////////////////// Map generator
53
54 void MapgenSinglenode::makeChunk(BlockMakeData *data) {
55         assert(data->vmanip);
56         assert(data->nodedef);
57         assert(data->blockpos_requested.X >= data->blockpos_min.X &&
58                    data->blockpos_requested.Y >= data->blockpos_min.Y &&
59                    data->blockpos_requested.Z >= data->blockpos_min.Z);
60         assert(data->blockpos_requested.X <= data->blockpos_max.X &&
61                    data->blockpos_requested.Y <= data->blockpos_max.Y &&
62                    data->blockpos_requested.Z <= data->blockpos_max.Z);
63
64         this->generating = true;
65         this->vm   = data->vmanip;      
66         this->ndef = data->nodedef;
67                         
68         v3s16 blockpos_min = data->blockpos_min;
69         v3s16 blockpos_max = data->blockpos_max;
70
71         // Area of central chunk
72         v3s16 node_min = blockpos_min*MAP_BLOCKSIZE;
73         v3s16 node_max = (blockpos_max+v3s16(1,1,1))*MAP_BLOCKSIZE-v3s16(1,1,1);
74
75         content_t c_node = ndef->getId("mapgen_singlenode");
76         if (c_node == CONTENT_IGNORE)
77                 c_node = CONTENT_AIR;
78         
79         MapNode n_node(c_node);
80         
81         for (s16 z = node_min.Z; z <= node_max.Z; z++)
82         for (s16 y = node_min.Y; y <= node_max.Y; y++) {
83                 u32 i = vm->m_area.index(node_min.X, y, z);
84                 for (s16 x = node_min.X; x <= node_max.X; x++) {
85                         if (vm->m_data[i].getContent() == CONTENT_IGNORE)
86                                 vm->m_data[i] = n_node;
87                         i++;
88                 }
89         }
90
91         // Add top and bottom side of water to transforming_liquid queue
92         updateLiquid(&data->transforming_liquid, node_min, node_max);
93
94         // Calculate lighting
95         if (!(flags & MG_NOLIGHT))
96                 calcLighting(node_min - v3s16(1, 0, 1) * MAP_BLOCKSIZE,
97                                          node_max + v3s16(1, 0, 1) * MAP_BLOCKSIZE);
98         
99         this->generating = false;
100 }
101
102 int MapgenSinglenode::getGroundLevelAtPoint(v2s16 p) {
103         return 0;
104 }
105