1 /*
2 Minetest
3 Copyright (C) 2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
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
21 #include "lua_api/l_vmanip.h"
22 #include "lua_api/l_internal.h"
23 #include "common/c_content.h"
24 #include "common/c_converter.h"
25 #include "emerge.h"
26 #include "environment.h"
27 #include "map.h"
28 #include "mapblock.h"
29 #include "server.h"
30 #include "mapgen/mapgen.h"
31 #include "voxelalgorithms.h"
32
33 // garbage collector
gc_object(lua_State * L)34 int LuaVoxelManip::gc_object(lua_State *L)
35 {
36 LuaVoxelManip *o = *(LuaVoxelManip **)(lua_touserdata(L, 1));
37 delete o;
38
39 return 0;
40 }
41
l_read_from_map(lua_State * L)42 int LuaVoxelManip::l_read_from_map(lua_State *L)
43 {
44 MAP_LOCK_REQUIRED;
45
46 LuaVoxelManip *o = checkobject(L, 1);
47 MMVManip *vm = o->vm;
48
49 v3s16 bp1 = getNodeBlockPos(check_v3s16(L, 2));
50 v3s16 bp2 = getNodeBlockPos(check_v3s16(L, 3));
51 sortBoxVerticies(bp1, bp2);
52
53 vm->initialEmerge(bp1, bp2);
54
55 push_v3s16(L, vm->m_area.MinEdge);
56 push_v3s16(L, vm->m_area.MaxEdge);
57
58 return 2;
59 }
60
l_get_data(lua_State * L)61 int LuaVoxelManip::l_get_data(lua_State *L)
62 {
63 NO_MAP_LOCK_REQUIRED;
64
65 LuaVoxelManip *o = checkobject(L, 1);
66 bool use_buffer = lua_istable(L, 2);
67
68 MMVManip *vm = o->vm;
69
70 u32 volume = vm->m_area.getVolume();
71
72 if (use_buffer)
73 lua_pushvalue(L, 2);
74 else
75 lua_createtable(L, volume, 0);
76
77 for (u32 i = 0; i != volume; i++) {
78 lua_Integer cid = vm->m_data[i].getContent();
79 lua_pushinteger(L, cid);
80 lua_rawseti(L, -2, i + 1);
81 }
82
83 return 1;
84 }
85
l_set_data(lua_State * L)86 int LuaVoxelManip::l_set_data(lua_State *L)
87 {
88 NO_MAP_LOCK_REQUIRED;
89
90 LuaVoxelManip *o = checkobject(L, 1);
91 MMVManip *vm = o->vm;
92
93 if (!lua_istable(L, 2))
94 throw LuaError("VoxelManip:set_data called with missing parameter");
95
96 u32 volume = vm->m_area.getVolume();
97 for (u32 i = 0; i != volume; i++) {
98 lua_rawgeti(L, 2, i + 1);
99 content_t c = lua_tointeger(L, -1);
100
101 vm->m_data[i].setContent(c);
102
103 lua_pop(L, 1);
104 }
105
106 return 0;
107 }
108
l_write_to_map(lua_State * L)109 int LuaVoxelManip::l_write_to_map(lua_State *L)
110 {
111 MAP_LOCK_REQUIRED;
112
113 LuaVoxelManip *o = checkobject(L, 1);
114 bool update_light = !lua_isboolean(L, 2) || readParam<bool>(L, 2);
115 GET_ENV_PTR;
116 ServerMap *map = &(env->getServerMap());
117 if (o->is_mapgen_vm || !update_light) {
118 o->vm->blitBackAll(&(o->modified_blocks));
119 } else {
120 voxalgo::blit_back_with_light(map, o->vm,
121 &(o->modified_blocks));
122 }
123
124 MapEditEvent event;
125 event.type = MEET_OTHER;
126 for (const auto &modified_block : o->modified_blocks)
127 event.modified_blocks.insert(modified_block.first);
128
129 map->dispatchEvent(event);
130
131 o->modified_blocks.clear();
132 return 0;
133 }
134
l_get_node_at(lua_State * L)135 int LuaVoxelManip::l_get_node_at(lua_State *L)
136 {
137 NO_MAP_LOCK_REQUIRED;
138
139 const NodeDefManager *ndef = getServer(L)->getNodeDefManager();
140
141 LuaVoxelManip *o = checkobject(L, 1);
142 v3s16 pos = check_v3s16(L, 2);
143
144 pushnode(L, o->vm->getNodeNoExNoEmerge(pos), ndef);
145 return 1;
146 }
147
l_set_node_at(lua_State * L)148 int LuaVoxelManip::l_set_node_at(lua_State *L)
149 {
150 NO_MAP_LOCK_REQUIRED;
151
152 const NodeDefManager *ndef = getServer(L)->getNodeDefManager();
153
154 LuaVoxelManip *o = checkobject(L, 1);
155 v3s16 pos = check_v3s16(L, 2);
156 MapNode n = readnode(L, 3, ndef);
157
158 o->vm->setNodeNoEmerge(pos, n);
159
160 return 0;
161 }
162
l_update_liquids(lua_State * L)163 int LuaVoxelManip::l_update_liquids(lua_State *L)
164 {
165 GET_ENV_PTR;
166
167 LuaVoxelManip *o = checkobject(L, 1);
168
169 Map *map = &(env->getMap());
170 const NodeDefManager *ndef = getServer(L)->getNodeDefManager();
171 MMVManip *vm = o->vm;
172
173 Mapgen mg;
174 mg.vm = vm;
175 mg.ndef = ndef;
176
177 mg.updateLiquid(&map->m_transforming_liquid,
178 vm->m_area.MinEdge, vm->m_area.MaxEdge);
179
180 return 0;
181 }
182
l_calc_lighting(lua_State * L)183 int LuaVoxelManip::l_calc_lighting(lua_State *L)
184 {
185 NO_MAP_LOCK_REQUIRED;
186
187 LuaVoxelManip *o = checkobject(L, 1);
188 if (!o->is_mapgen_vm) {
189 warningstream << "VoxelManip:calc_lighting called for a non-mapgen "
190 "VoxelManip object" << std::endl;
191 return 0;
192 }
193
194 const NodeDefManager *ndef = getServer(L)->getNodeDefManager();
195 EmergeManager *emerge = getServer(L)->getEmergeManager();
196 MMVManip *vm = o->vm;
197
198 v3s16 yblock = v3s16(0, 1, 0) * MAP_BLOCKSIZE;
199 v3s16 fpmin = vm->m_area.MinEdge;
200 v3s16 fpmax = vm->m_area.MaxEdge;
201 v3s16 pmin = lua_istable(L, 2) ? check_v3s16(L, 2) : fpmin + yblock;
202 v3s16 pmax = lua_istable(L, 3) ? check_v3s16(L, 3) : fpmax - yblock;
203 bool propagate_shadow = !lua_isboolean(L, 4) || readParam<bool>(L, 4);
204
205 sortBoxVerticies(pmin, pmax);
206 if (!vm->m_area.contains(VoxelArea(pmin, pmax)))
207 throw LuaError("Specified voxel area out of VoxelManipulator bounds");
208
209 Mapgen mg;
210 mg.vm = vm;
211 mg.ndef = ndef;
212 mg.water_level = emerge->mgparams->water_level;
213
214 mg.calcLighting(pmin, pmax, fpmin, fpmax, propagate_shadow);
215
216 return 0;
217 }
218
l_set_lighting(lua_State * L)219 int LuaVoxelManip::l_set_lighting(lua_State *L)
220 {
221 NO_MAP_LOCK_REQUIRED;
222
223 LuaVoxelManip *o = checkobject(L, 1);
224 if (!o->is_mapgen_vm) {
225 warningstream << "VoxelManip:set_lighting called for a non-mapgen "
226 "VoxelManip object" << std::endl;
227 return 0;
228 }
229
230 if (!lua_istable(L, 2))
231 throw LuaError("VoxelManip:set_lighting called with missing parameter");
232
233 u8 light;
234 light = (getintfield_default(L, 2, "day", 0) & 0x0F);
235 light |= (getintfield_default(L, 2, "night", 0) & 0x0F) << 4;
236
237 MMVManip *vm = o->vm;
238
239 v3s16 yblock = v3s16(0, 1, 0) * MAP_BLOCKSIZE;
240 v3s16 pmin = lua_istable(L, 3) ? check_v3s16(L, 3) : vm->m_area.MinEdge + yblock;
241 v3s16 pmax = lua_istable(L, 4) ? check_v3s16(L, 4) : vm->m_area.MaxEdge - yblock;
242
243 sortBoxVerticies(pmin, pmax);
244 if (!vm->m_area.contains(VoxelArea(pmin, pmax)))
245 throw LuaError("Specified voxel area out of VoxelManipulator bounds");
246
247 Mapgen mg;
248 mg.vm = vm;
249
250 mg.setLighting(light, pmin, pmax);
251
252 return 0;
253 }
254
l_get_light_data(lua_State * L)255 int LuaVoxelManip::l_get_light_data(lua_State *L)
256 {
257 NO_MAP_LOCK_REQUIRED;
258
259 LuaVoxelManip *o = checkobject(L, 1);
260 MMVManip *vm = o->vm;
261
262 u32 volume = vm->m_area.getVolume();
263
264 lua_createtable(L, volume, 0);
265 for (u32 i = 0; i != volume; i++) {
266 lua_Integer light = vm->m_data[i].param1;
267 lua_pushinteger(L, light);
268 lua_rawseti(L, -2, i + 1);
269 }
270
271 return 1;
272 }
273
l_set_light_data(lua_State * L)274 int LuaVoxelManip::l_set_light_data(lua_State *L)
275 {
276 NO_MAP_LOCK_REQUIRED;
277
278 LuaVoxelManip *o = checkobject(L, 1);
279 MMVManip *vm = o->vm;
280
281 if (!lua_istable(L, 2))
282 throw LuaError("VoxelManip:set_light_data called with missing "
283 "parameter");
284
285 u32 volume = vm->m_area.getVolume();
286 for (u32 i = 0; i != volume; i++) {
287 lua_rawgeti(L, 2, i + 1);
288 u8 light = lua_tointeger(L, -1);
289
290 vm->m_data[i].param1 = light;
291
292 lua_pop(L, 1);
293 }
294
295 return 0;
296 }
297
l_get_param2_data(lua_State * L)298 int LuaVoxelManip::l_get_param2_data(lua_State *L)
299 {
300 NO_MAP_LOCK_REQUIRED;
301
302 LuaVoxelManip *o = checkobject(L, 1);
303 bool use_buffer = lua_istable(L, 2);
304
305 MMVManip *vm = o->vm;
306
307 u32 volume = vm->m_area.getVolume();
308
309 if (use_buffer)
310 lua_pushvalue(L, 2);
311 else
312 lua_createtable(L, volume, 0);
313
314 for (u32 i = 0; i != volume; i++) {
315 lua_Integer param2 = vm->m_data[i].param2;
316 lua_pushinteger(L, param2);
317 lua_rawseti(L, -2, i + 1);
318 }
319
320 return 1;
321 }
322
l_set_param2_data(lua_State * L)323 int LuaVoxelManip::l_set_param2_data(lua_State *L)
324 {
325 NO_MAP_LOCK_REQUIRED;
326
327 LuaVoxelManip *o = checkobject(L, 1);
328 MMVManip *vm = o->vm;
329
330 if (!lua_istable(L, 2))
331 throw LuaError("VoxelManip:set_param2_data called with missing "
332 "parameter");
333
334 u32 volume = vm->m_area.getVolume();
335 for (u32 i = 0; i != volume; i++) {
336 lua_rawgeti(L, 2, i + 1);
337 u8 param2 = lua_tointeger(L, -1);
338
339 vm->m_data[i].param2 = param2;
340
341 lua_pop(L, 1);
342 }
343
344 return 0;
345 }
346
l_update_map(lua_State * L)347 int LuaVoxelManip::l_update_map(lua_State *L)
348 {
349 return 0;
350 }
351
l_was_modified(lua_State * L)352 int LuaVoxelManip::l_was_modified(lua_State *L)
353 {
354 NO_MAP_LOCK_REQUIRED;
355
356 LuaVoxelManip *o = checkobject(L, 1);
357 MMVManip *vm = o->vm;
358
359 lua_pushboolean(L, vm->m_is_dirty);
360
361 return 1;
362 }
363
l_get_emerged_area(lua_State * L)364 int LuaVoxelManip::l_get_emerged_area(lua_State *L)
365 {
366 NO_MAP_LOCK_REQUIRED;
367
368 LuaVoxelManip *o = checkobject(L, 1);
369
370 push_v3s16(L, o->vm->m_area.MinEdge);
371 push_v3s16(L, o->vm->m_area.MaxEdge);
372
373 return 2;
374 }
375
LuaVoxelManip(MMVManip * mmvm,bool is_mg_vm)376 LuaVoxelManip::LuaVoxelManip(MMVManip *mmvm, bool is_mg_vm) :
377 is_mapgen_vm(is_mg_vm),
378 vm(mmvm)
379 {
380 }
381
LuaVoxelManip(Map * map)382 LuaVoxelManip::LuaVoxelManip(Map *map) : vm(new MMVManip(map))
383 {
384 }
385
LuaVoxelManip(Map * map,v3s16 p1,v3s16 p2)386 LuaVoxelManip::LuaVoxelManip(Map *map, v3s16 p1, v3s16 p2)
387 {
388 vm = new MMVManip(map);
389
390 v3s16 bp1 = getNodeBlockPos(p1);
391 v3s16 bp2 = getNodeBlockPos(p2);
392 sortBoxVerticies(bp1, bp2);
393 vm->initialEmerge(bp1, bp2);
394 }
395
~LuaVoxelManip()396 LuaVoxelManip::~LuaVoxelManip()
397 {
398 if (!is_mapgen_vm)
399 delete vm;
400 }
401
402 // LuaVoxelManip()
403 // Creates an LuaVoxelManip and leaves it on top of stack
create_object(lua_State * L)404 int LuaVoxelManip::create_object(lua_State *L)
405 {
406 GET_ENV_PTR;
407
408 Map *map = &(env->getMap());
409 LuaVoxelManip *o = (lua_istable(L, 1) && lua_istable(L, 2)) ?
410 new LuaVoxelManip(map, check_v3s16(L, 1), check_v3s16(L, 2)) :
411 new LuaVoxelManip(map);
412
413 *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
414 luaL_getmetatable(L, className);
415 lua_setmetatable(L, -2);
416 return 1;
417 }
418
checkobject(lua_State * L,int narg)419 LuaVoxelManip *LuaVoxelManip::checkobject(lua_State *L, int narg)
420 {
421 NO_MAP_LOCK_REQUIRED;
422
423 luaL_checktype(L, narg, LUA_TUSERDATA);
424
425 void *ud = luaL_checkudata(L, narg, className);
426 if (!ud)
427 luaL_typerror(L, narg, className);
428
429 return *(LuaVoxelManip **)ud; // unbox pointer
430 }
431
Register(lua_State * L)432 void LuaVoxelManip::Register(lua_State *L)
433 {
434 lua_newtable(L);
435 int methodtable = lua_gettop(L);
436 luaL_newmetatable(L, className);
437 int metatable = lua_gettop(L);
438
439 lua_pushliteral(L, "__metatable");
440 lua_pushvalue(L, methodtable);
441 lua_settable(L, metatable); // hide metatable from Lua getmetatable()
442
443 lua_pushliteral(L, "__index");
444 lua_pushvalue(L, methodtable);
445 lua_settable(L, metatable);
446
447 lua_pushliteral(L, "__gc");
448 lua_pushcfunction(L, gc_object);
449 lua_settable(L, metatable);
450
451 lua_pop(L, 1); // drop metatable
452
453 luaL_openlib(L, 0, methods, 0); // fill methodtable
454 lua_pop(L, 1); // drop methodtable
455
456 // Can be created from Lua (VoxelManip())
457 lua_register(L, className, create_object);
458 }
459
460 const char LuaVoxelManip::className[] = "VoxelManip";
461 const luaL_Reg LuaVoxelManip::methods[] = {
462 luamethod(LuaVoxelManip, read_from_map),
463 luamethod(LuaVoxelManip, get_data),
464 luamethod(LuaVoxelManip, set_data),
465 luamethod(LuaVoxelManip, get_node_at),
466 luamethod(LuaVoxelManip, set_node_at),
467 luamethod(LuaVoxelManip, write_to_map),
468 luamethod(LuaVoxelManip, update_map),
469 luamethod(LuaVoxelManip, update_liquids),
470 luamethod(LuaVoxelManip, calc_lighting),
471 luamethod(LuaVoxelManip, set_lighting),
472 luamethod(LuaVoxelManip, get_light_data),
473 luamethod(LuaVoxelManip, set_light_data),
474 luamethod(LuaVoxelManip, get_param2_data),
475 luamethod(LuaVoxelManip, set_param2_data),
476 luamethod(LuaVoxelManip, was_modified),
477 luamethod(LuaVoxelManip, get_emerged_area),
478 {0,0}
479 };
480