1 /*
2 Minetest
3 Copyright (C) 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 <algorithm>
21 #include "lua_api/l_env.h"
22 #include "lua_api/l_internal.h"
23 #include "lua_api/l_nodemeta.h"
24 #include "lua_api/l_nodetimer.h"
25 #include "lua_api/l_noise.h"
26 #include "lua_api/l_vmanip.h"
27 #include "common/c_converter.h"
28 #include "common/c_content.h"
29 #include "scripting_server.h"
30 #include "environment.h"
31 #include "mapblock.h"
32 #include "server.h"
33 #include "nodedef.h"
34 #include "daynightratio.h"
35 #include "util/pointedthing.h"
36 #include "mapgen/treegen.h"
37 #include "emerge.h"
38 #include "pathfinder.h"
39 #include "face_position_cache.h"
40 #include "remoteplayer.h"
41 #include "server/luaentity_sao.h"
42 #include "server/player_sao.h"
43 #include "util/string.h"
44 #include "translation.h"
45 #ifndef SERVER
46 #include "client/client.h"
47 #endif
48
49 struct EnumString ModApiEnvMod::es_ClearObjectsMode[] =
50 {
51 {CLEAR_OBJECTS_MODE_FULL, "full"},
52 {CLEAR_OBJECTS_MODE_QUICK, "quick"},
53 {0, NULL},
54 };
55
56 ///////////////////////////////////////////////////////////////////////////////
57
58
trigger(ServerEnvironment * env,v3s16 p,MapNode n,u32 active_object_count,u32 active_object_count_wider)59 void LuaABM::trigger(ServerEnvironment *env, v3s16 p, MapNode n,
60 u32 active_object_count, u32 active_object_count_wider)
61 {
62 ServerScripting *scriptIface = env->getScriptIface();
63 scriptIface->realityCheck();
64
65 lua_State *L = scriptIface->getStack();
66 sanity_check(lua_checkstack(L, 20));
67 StackUnroller stack_unroller(L);
68
69 int error_handler = PUSH_ERROR_HANDLER(L);
70
71 // Get registered_abms
72 lua_getglobal(L, "core");
73 lua_getfield(L, -1, "registered_abms");
74 luaL_checktype(L, -1, LUA_TTABLE);
75 lua_remove(L, -2); // Remove core
76
77 // Get registered_abms[m_id]
78 lua_pushinteger(L, m_id);
79 lua_gettable(L, -2);
80 if(lua_isnil(L, -1))
81 FATAL_ERROR("");
82 lua_remove(L, -2); // Remove registered_abms
83
84 scriptIface->setOriginFromTable(-1);
85
86 // Call action
87 luaL_checktype(L, -1, LUA_TTABLE);
88 lua_getfield(L, -1, "action");
89 luaL_checktype(L, -1, LUA_TFUNCTION);
90 lua_remove(L, -2); // Remove registered_abms[m_id]
91 push_v3s16(L, p);
92 pushnode(L, n, env->getGameDef()->ndef());
93 lua_pushnumber(L, active_object_count);
94 lua_pushnumber(L, active_object_count_wider);
95
96 int result = lua_pcall(L, 4, 0, error_handler);
97 if (result)
98 scriptIface->scriptError(result, "LuaABM::trigger");
99
100 lua_pop(L, 1); // Pop error handler
101 }
102
trigger(ServerEnvironment * env,v3s16 p,MapNode n)103 void LuaLBM::trigger(ServerEnvironment *env, v3s16 p, MapNode n)
104 {
105 ServerScripting *scriptIface = env->getScriptIface();
106 scriptIface->realityCheck();
107
108 lua_State *L = scriptIface->getStack();
109 sanity_check(lua_checkstack(L, 20));
110 StackUnroller stack_unroller(L);
111
112 int error_handler = PUSH_ERROR_HANDLER(L);
113
114 // Get registered_lbms
115 lua_getglobal(L, "core");
116 lua_getfield(L, -1, "registered_lbms");
117 luaL_checktype(L, -1, LUA_TTABLE);
118 lua_remove(L, -2); // Remove core
119
120 // Get registered_lbms[m_id]
121 lua_pushinteger(L, m_id);
122 lua_gettable(L, -2);
123 FATAL_ERROR_IF(lua_isnil(L, -1), "Entry with given id not found in registered_lbms table");
124 lua_remove(L, -2); // Remove registered_lbms
125
126 scriptIface->setOriginFromTable(-1);
127
128 // Call action
129 luaL_checktype(L, -1, LUA_TTABLE);
130 lua_getfield(L, -1, "action");
131 luaL_checktype(L, -1, LUA_TFUNCTION);
132 lua_remove(L, -2); // Remove registered_lbms[m_id]
133 push_v3s16(L, p);
134 pushnode(L, n, env->getGameDef()->ndef());
135
136 int result = lua_pcall(L, 2, 0, error_handler);
137 if (result)
138 scriptIface->scriptError(result, "LuaLBM::trigger");
139
140 lua_pop(L, 1); // Pop error handler
141 }
142
l_next(lua_State * L)143 int LuaRaycast::l_next(lua_State *L)
144 {
145 GET_PLAIN_ENV_PTR;
146
147 bool csm = false;
148 #ifndef SERVER
149 csm = getClient(L) != nullptr;
150 #endif
151
152 LuaRaycast *o = checkobject(L, 1);
153 PointedThing pointed;
154 env->continueRaycast(&o->state, &pointed);
155 if (pointed.type == POINTEDTHING_NOTHING)
156 lua_pushnil(L);
157 else
158 push_pointed_thing(L, pointed, csm, true);
159
160 return 1;
161 }
162
create_object(lua_State * L)163 int LuaRaycast::create_object(lua_State *L)
164 {
165 NO_MAP_LOCK_REQUIRED;
166
167 bool objects = true;
168 bool liquids = false;
169
170 v3f pos1 = checkFloatPos(L, 1);
171 v3f pos2 = checkFloatPos(L, 2);
172 if (lua_isboolean(L, 3)) {
173 objects = readParam<bool>(L, 3);
174 }
175 if (lua_isboolean(L, 4)) {
176 liquids = readParam<bool>(L, 4);
177 }
178
179 LuaRaycast *o = new LuaRaycast(core::line3d<f32>(pos1, pos2),
180 objects, liquids);
181
182 *(void **) (lua_newuserdata(L, sizeof(void *))) = o;
183 luaL_getmetatable(L, className);
184 lua_setmetatable(L, -2);
185 return 1;
186 }
187
checkobject(lua_State * L,int narg)188 LuaRaycast *LuaRaycast::checkobject(lua_State *L, int narg)
189 {
190 NO_MAP_LOCK_REQUIRED;
191
192 luaL_checktype(L, narg, LUA_TUSERDATA);
193 void *ud = luaL_checkudata(L, narg, className);
194 if (!ud)
195 luaL_typerror(L, narg, className);
196 return *(LuaRaycast **) ud;
197 }
198
gc_object(lua_State * L)199 int LuaRaycast::gc_object(lua_State *L)
200 {
201 LuaRaycast *o = *(LuaRaycast **) (lua_touserdata(L, 1));
202 delete o;
203 return 0;
204 }
205
Register(lua_State * L)206 void LuaRaycast::Register(lua_State *L)
207 {
208 lua_newtable(L);
209 int methodtable = lua_gettop(L);
210 luaL_newmetatable(L, className);
211 int metatable = lua_gettop(L);
212
213 lua_pushliteral(L, "__metatable");
214 lua_pushvalue(L, methodtable);
215 lua_settable(L, metatable);
216
217 lua_pushliteral(L, "__index");
218 lua_pushvalue(L, methodtable);
219 lua_settable(L, metatable);
220
221 lua_pushliteral(L, "__gc");
222 lua_pushcfunction(L, gc_object);
223 lua_settable(L, metatable);
224
225 lua_pushliteral(L, "__call");
226 lua_pushcfunction(L, l_next);
227 lua_settable(L, metatable);
228
229 lua_pop(L, 1);
230
231 luaL_openlib(L, 0, methods, 0);
232 lua_pop(L, 1);
233
234 lua_register(L, className, create_object);
235 }
236
237 const char LuaRaycast::className[] = "Raycast";
238 const luaL_Reg LuaRaycast::methods[] =
239 {
240 luamethod(LuaRaycast, next),
241 { 0, 0 }
242 };
243
LuaEmergeAreaCallback(v3s16 blockpos,EmergeAction action,void * param)244 void LuaEmergeAreaCallback(v3s16 blockpos, EmergeAction action, void *param)
245 {
246 ScriptCallbackState *state = (ScriptCallbackState *)param;
247 assert(state != NULL);
248 assert(state->script != NULL);
249 assert(state->refcount > 0);
250
251 // state must be protected by envlock
252 Server *server = state->script->getServer();
253 MutexAutoLock envlock(server->m_env_mutex);
254
255 state->refcount--;
256
257 state->script->on_emerge_area_completion(blockpos, action, state);
258
259 if (state->refcount == 0)
260 delete state;
261 }
262
263 // Exported functions
264
265 // set_node(pos, node)
266 // pos = {x=num, y=num, z=num}
l_set_node(lua_State * L)267 int ModApiEnvMod::l_set_node(lua_State *L)
268 {
269 GET_ENV_PTR;
270
271 const NodeDefManager *ndef = env->getGameDef()->ndef();
272 // parameters
273 v3s16 pos = read_v3s16(L, 1);
274 MapNode n = readnode(L, 2, ndef);
275 // Do it
276 bool succeeded = env->setNode(pos, n);
277 lua_pushboolean(L, succeeded);
278 return 1;
279 }
280
281 // bulk_set_node([pos1, pos2, ...], node)
282 // pos = {x=num, y=num, z=num}
l_bulk_set_node(lua_State * L)283 int ModApiEnvMod::l_bulk_set_node(lua_State *L)
284 {
285 GET_ENV_PTR;
286
287 const NodeDefManager *ndef = env->getGameDef()->ndef();
288 // parameters
289 if (!lua_istable(L, 1)) {
290 return 0;
291 }
292
293 s32 len = lua_objlen(L, 1);
294 if (len == 0) {
295 lua_pushboolean(L, true);
296 return 1;
297 }
298
299 MapNode n = readnode(L, 2, ndef);
300
301 // Do it
302 bool succeeded = true;
303 for (s32 i = 1; i <= len; i++) {
304 lua_rawgeti(L, 1, i);
305 if (!env->setNode(read_v3s16(L, -1), n))
306 succeeded = false;
307 lua_pop(L, 1);
308 }
309
310 lua_pushboolean(L, succeeded);
311 return 1;
312 }
313
l_add_node(lua_State * L)314 int ModApiEnvMod::l_add_node(lua_State *L)
315 {
316 return l_set_node(L);
317 }
318
319 // remove_node(pos)
320 // pos = {x=num, y=num, z=num}
l_remove_node(lua_State * L)321 int ModApiEnvMod::l_remove_node(lua_State *L)
322 {
323 GET_ENV_PTR;
324
325 // parameters
326 v3s16 pos = read_v3s16(L, 1);
327 // Do it
328 bool succeeded = env->removeNode(pos);
329 lua_pushboolean(L, succeeded);
330 return 1;
331 }
332
333 // swap_node(pos, node)
334 // pos = {x=num, y=num, z=num}
l_swap_node(lua_State * L)335 int ModApiEnvMod::l_swap_node(lua_State *L)
336 {
337 GET_ENV_PTR;
338
339 const NodeDefManager *ndef = env->getGameDef()->ndef();
340 // parameters
341 v3s16 pos = read_v3s16(L, 1);
342 MapNode n = readnode(L, 2, ndef);
343 // Do it
344 bool succeeded = env->swapNode(pos, n);
345 lua_pushboolean(L, succeeded);
346 return 1;
347 }
348
349 // get_node(pos)
350 // pos = {x=num, y=num, z=num}
l_get_node(lua_State * L)351 int ModApiEnvMod::l_get_node(lua_State *L)
352 {
353 GET_ENV_PTR;
354
355 // pos
356 v3s16 pos = read_v3s16(L, 1);
357 // Do it
358 MapNode n = env->getMap().getNode(pos);
359 // Return node
360 pushnode(L, n, env->getGameDef()->ndef());
361 return 1;
362 }
363
364 // get_node_or_nil(pos)
365 // pos = {x=num, y=num, z=num}
l_get_node_or_nil(lua_State * L)366 int ModApiEnvMod::l_get_node_or_nil(lua_State *L)
367 {
368 GET_ENV_PTR;
369
370 // pos
371 v3s16 pos = read_v3s16(L, 1);
372 // Do it
373 bool pos_ok;
374 MapNode n = env->getMap().getNode(pos, &pos_ok);
375 if (pos_ok) {
376 // Return node
377 pushnode(L, n, env->getGameDef()->ndef());
378 } else {
379 lua_pushnil(L);
380 }
381 return 1;
382 }
383
384 // get_node_light(pos, timeofday)
385 // pos = {x=num, y=num, z=num}
386 // timeofday: nil = current time, 0 = night, 0.5 = day
l_get_node_light(lua_State * L)387 int ModApiEnvMod::l_get_node_light(lua_State *L)
388 {
389 GET_PLAIN_ENV_PTR;
390
391 // Do it
392 v3s16 pos = read_v3s16(L, 1);
393 u32 time_of_day = env->getTimeOfDay();
394 if(lua_isnumber(L, 2))
395 time_of_day = 24000.0 * lua_tonumber(L, 2);
396 time_of_day %= 24000;
397 u32 dnr = time_to_daynight_ratio(time_of_day, true);
398
399 bool is_position_ok;
400 MapNode n = env->getMap().getNode(pos, &is_position_ok);
401 if (is_position_ok) {
402 const NodeDefManager *ndef = env->getGameDef()->ndef();
403 lua_pushinteger(L, n.getLightBlend(dnr, ndef));
404 } else {
405 lua_pushnil(L);
406 }
407 return 1;
408 }
409
410
411 // get_natural_light(pos, timeofday)
412 // pos = {x=num, y=num, z=num}
413 // timeofday: nil = current time, 0 = night, 0.5 = day
l_get_natural_light(lua_State * L)414 int ModApiEnvMod::l_get_natural_light(lua_State *L)
415 {
416 GET_ENV_PTR;
417
418 v3s16 pos = read_v3s16(L, 1);
419
420 bool is_position_ok;
421 MapNode n = env->getMap().getNode(pos, &is_position_ok);
422 if (!is_position_ok)
423 return 0;
424
425 // If the daylight is 0, nothing needs to be calculated
426 u8 daylight = n.param1 & 0x0f;
427 if (daylight == 0) {
428 lua_pushinteger(L, 0);
429 return 1;
430 }
431
432 u32 time_of_day;
433 if (lua_isnumber(L, 2)) {
434 time_of_day = 24000.0 * lua_tonumber(L, 2);
435 time_of_day %= 24000;
436 } else {
437 time_of_day = env->getTimeOfDay();
438 }
439 u32 dnr = time_to_daynight_ratio(time_of_day, true);
440
441 // If it's the same as the artificial light, the sunlight needs to be
442 // searched for because the value may not emanate from the sun
443 if (daylight == n.param1 >> 4)
444 daylight = env->findSunlight(pos);
445
446 lua_pushinteger(L, dnr * daylight / 1000);
447 return 1;
448 }
449
450 // place_node(pos, node)
451 // pos = {x=num, y=num, z=num}
l_place_node(lua_State * L)452 int ModApiEnvMod::l_place_node(lua_State *L)
453 {
454 GET_ENV_PTR;
455
456 ScriptApiItem *scriptIfaceItem = getScriptApi<ScriptApiItem>(L);
457 Server *server = getServer(L);
458 const NodeDefManager *ndef = server->ndef();
459 IItemDefManager *idef = server->idef();
460
461 v3s16 pos = read_v3s16(L, 1);
462 MapNode n = readnode(L, 2, ndef);
463
464 // Don't attempt to load non-loaded area as of now
465 MapNode n_old = env->getMap().getNode(pos);
466 if(n_old.getContent() == CONTENT_IGNORE){
467 lua_pushboolean(L, false);
468 return 1;
469 }
470 // Create item to place
471 ItemStack item(ndef->get(n).name, 1, 0, idef);
472 // Make pointed position
473 PointedThing pointed;
474 pointed.type = POINTEDTHING_NODE;
475 pointed.node_abovesurface = pos;
476 pointed.node_undersurface = pos + v3s16(0,-1,0);
477 // Place it with a NULL placer (appears in Lua as nil)
478 bool success = scriptIfaceItem->item_OnPlace(item, nullptr, pointed);
479 lua_pushboolean(L, success);
480 return 1;
481 }
482
483 // dig_node(pos)
484 // pos = {x=num, y=num, z=num}
l_dig_node(lua_State * L)485 int ModApiEnvMod::l_dig_node(lua_State *L)
486 {
487 GET_ENV_PTR;
488
489 ScriptApiNode *scriptIfaceNode = getScriptApi<ScriptApiNode>(L);
490
491 v3s16 pos = read_v3s16(L, 1);
492
493 // Don't attempt to load non-loaded area as of now
494 MapNode n = env->getMap().getNode(pos);
495 if(n.getContent() == CONTENT_IGNORE){
496 lua_pushboolean(L, false);
497 return 1;
498 }
499 // Dig it out with a NULL digger (appears in Lua as a
500 // non-functional ObjectRef)
501 bool success = scriptIfaceNode->node_on_dig(pos, n, NULL);
502 lua_pushboolean(L, success);
503 return 1;
504 }
505
506 // punch_node(pos)
507 // pos = {x=num, y=num, z=num}
l_punch_node(lua_State * L)508 int ModApiEnvMod::l_punch_node(lua_State *L)
509 {
510 GET_ENV_PTR;
511
512 ScriptApiNode *scriptIfaceNode = getScriptApi<ScriptApiNode>(L);
513
514 v3s16 pos = read_v3s16(L, 1);
515
516 // Don't attempt to load non-loaded area as of now
517 MapNode n = env->getMap().getNode(pos);
518 if(n.getContent() == CONTENT_IGNORE){
519 lua_pushboolean(L, false);
520 return 1;
521 }
522 // Punch it with a NULL puncher (appears in Lua as a non-functional
523 // ObjectRef)
524 bool success = scriptIfaceNode->node_on_punch(pos, n, NULL, PointedThing());
525 lua_pushboolean(L, success);
526 return 1;
527 }
528
529 // get_node_max_level(pos)
530 // pos = {x=num, y=num, z=num}
l_get_node_max_level(lua_State * L)531 int ModApiEnvMod::l_get_node_max_level(lua_State *L)
532 {
533 GET_PLAIN_ENV_PTR;
534
535 v3s16 pos = read_v3s16(L, 1);
536 MapNode n = env->getMap().getNode(pos);
537 lua_pushnumber(L, n.getMaxLevel(env->getGameDef()->ndef()));
538 return 1;
539 }
540
541 // get_node_level(pos)
542 // pos = {x=num, y=num, z=num}
l_get_node_level(lua_State * L)543 int ModApiEnvMod::l_get_node_level(lua_State *L)
544 {
545 GET_PLAIN_ENV_PTR;
546
547 v3s16 pos = read_v3s16(L, 1);
548 MapNode n = env->getMap().getNode(pos);
549 lua_pushnumber(L, n.getLevel(env->getGameDef()->ndef()));
550 return 1;
551 }
552
553 // set_node_level(pos, level)
554 // pos = {x=num, y=num, z=num}
555 // level: 0..63
l_set_node_level(lua_State * L)556 int ModApiEnvMod::l_set_node_level(lua_State *L)
557 {
558 GET_ENV_PTR;
559
560 v3s16 pos = read_v3s16(L, 1);
561 u8 level = 1;
562 if(lua_isnumber(L, 2))
563 level = lua_tonumber(L, 2);
564 MapNode n = env->getMap().getNode(pos);
565 lua_pushnumber(L, n.setLevel(env->getGameDef()->ndef(), level));
566 env->setNode(pos, n);
567 return 1;
568 }
569
570 // add_node_level(pos, level)
571 // pos = {x=num, y=num, z=num}
572 // level: -127..127
l_add_node_level(lua_State * L)573 int ModApiEnvMod::l_add_node_level(lua_State *L)
574 {
575 GET_ENV_PTR;
576
577 v3s16 pos = read_v3s16(L, 1);
578 s16 level = 1;
579 if(lua_isnumber(L, 2))
580 level = lua_tonumber(L, 2);
581 MapNode n = env->getMap().getNode(pos);
582 lua_pushnumber(L, n.addLevel(env->getGameDef()->ndef(), level));
583 env->setNode(pos, n);
584 return 1;
585 }
586
587 // find_nodes_with_meta(pos1, pos2)
l_find_nodes_with_meta(lua_State * L)588 int ModApiEnvMod::l_find_nodes_with_meta(lua_State *L)
589 {
590 GET_PLAIN_ENV_PTR;
591
592 std::vector<v3s16> positions = env->getMap().findNodesWithMetadata(
593 check_v3s16(L, 1), check_v3s16(L, 2));
594
595 lua_createtable(L, positions.size(), 0);
596 for (size_t i = 0; i != positions.size(); i++) {
597 push_v3s16(L, positions[i]);
598 lua_rawseti(L, -2, i + 1);
599 }
600
601 return 1;
602 }
603
604 // get_meta(pos)
l_get_meta(lua_State * L)605 int ModApiEnvMod::l_get_meta(lua_State *L)
606 {
607 GET_ENV_PTR;
608
609 // Do it
610 v3s16 p = read_v3s16(L, 1);
611 NodeMetaRef::create(L, p, env);
612 return 1;
613 }
614
615 // get_node_timer(pos)
l_get_node_timer(lua_State * L)616 int ModApiEnvMod::l_get_node_timer(lua_State *L)
617 {
618 GET_ENV_PTR;
619
620 // Do it
621 v3s16 p = read_v3s16(L, 1);
622 NodeTimerRef::create(L, p, &env->getServerMap());
623 return 1;
624 }
625
626 // add_entity(pos, entityname, [staticdata]) -> ObjectRef or nil
627 // pos = {x=num, y=num, z=num}
l_add_entity(lua_State * L)628 int ModApiEnvMod::l_add_entity(lua_State *L)
629 {
630 GET_ENV_PTR;
631
632 v3f pos = checkFloatPos(L, 1);
633 const char *name = luaL_checkstring(L, 2);
634 const char *staticdata = luaL_optstring(L, 3, "");
635
636 ServerActiveObject *obj = new LuaEntitySAO(env, pos, name, staticdata);
637 int objectid = env->addActiveObject(obj);
638 // If failed to add, return nothing (reads as nil)
639 if(objectid == 0)
640 return 0;
641
642 // If already deleted (can happen in on_activate), return nil
643 if (obj->isGone())
644 return 0;
645 getScriptApiBase(L)->objectrefGetOrCreate(L, obj);
646 return 1;
647 }
648
649 // add_item(pos, itemstack or itemstring or table) -> ObjectRef or nil
650 // pos = {x=num, y=num, z=num}
l_add_item(lua_State * L)651 int ModApiEnvMod::l_add_item(lua_State *L)
652 {
653 GET_ENV_PTR;
654
655 // pos
656 //v3f pos = checkFloatPos(L, 1);
657 // item
658 ItemStack item = read_item(L, 2,getServer(L)->idef());
659 if(item.empty() || !item.isKnown(getServer(L)->idef()))
660 return 0;
661
662 int error_handler = PUSH_ERROR_HANDLER(L);
663
664 // Use spawn_item to spawn a __builtin:item
665 lua_getglobal(L, "core");
666 lua_getfield(L, -1, "spawn_item");
667 lua_remove(L, -2); // Remove core
668 if(lua_isnil(L, -1))
669 return 0;
670 lua_pushvalue(L, 1);
671 lua_pushstring(L, item.getItemString().c_str());
672
673 PCALL_RESL(L, lua_pcall(L, 2, 1, error_handler));
674
675 lua_remove(L, error_handler);
676 return 1;
677 }
678
679 // get_connected_players()
l_get_connected_players(lua_State * L)680 int ModApiEnvMod::l_get_connected_players(lua_State *L)
681 {
682 ServerEnvironment *env = (ServerEnvironment *) getEnv(L);
683 if (!env) {
684 log_deprecated(L, "Calling get_connected_players() at mod load time"
685 " is deprecated");
686 lua_createtable(L, 0, 0);
687 return 1;
688 }
689
690 lua_createtable(L, env->getPlayerCount(), 0);
691 u32 i = 0;
692 for (RemotePlayer *player : env->getPlayers()) {
693 if (player->getPeerId() == PEER_ID_INEXISTENT)
694 continue;
695 PlayerSAO *sao = player->getPlayerSAO();
696 if (sao && !sao->isGone()) {
697 getScriptApiBase(L)->objectrefGetOrCreate(L, sao);
698 lua_rawseti(L, -2, ++i);
699 }
700 }
701 return 1;
702 }
703
704 // get_player_by_name(name)
l_get_player_by_name(lua_State * L)705 int ModApiEnvMod::l_get_player_by_name(lua_State *L)
706 {
707 GET_ENV_PTR;
708
709 // Do it
710 const char *name = luaL_checkstring(L, 1);
711 RemotePlayer *player = env->getPlayer(name);
712 if (!player || player->getPeerId() == PEER_ID_INEXISTENT)
713 return 0;
714 PlayerSAO *sao = player->getPlayerSAO();
715 if (!sao || sao->isGone())
716 return 0;
717 // Put player on stack
718 getScriptApiBase(L)->objectrefGetOrCreate(L, sao);
719 return 1;
720 }
721
722 // get_objects_inside_radius(pos, radius)
l_get_objects_inside_radius(lua_State * L)723 int ModApiEnvMod::l_get_objects_inside_radius(lua_State *L)
724 {
725 GET_ENV_PTR;
726 ScriptApiBase *script = getScriptApiBase(L);
727
728 // Do it
729 v3f pos = checkFloatPos(L, 1);
730 float radius = readParam<float>(L, 2) * BS;
731 std::vector<ServerActiveObject *> objs;
732
733 auto include_obj_cb = [](ServerActiveObject *obj){ return !obj->isGone(); };
734 env->getObjectsInsideRadius(objs, pos, radius, include_obj_cb);
735
736 int i = 0;
737 lua_createtable(L, objs.size(), 0);
738 for (const auto obj : objs) {
739 // Insert object reference into table
740 script->objectrefGetOrCreate(L, obj);
741 lua_rawseti(L, -2, ++i);
742 }
743 return 1;
744 }
745
746 // get_objects_in_area(pos, minp, maxp)
l_get_objects_in_area(lua_State * L)747 int ModApiEnvMod::l_get_objects_in_area(lua_State *L)
748 {
749 GET_ENV_PTR;
750 ScriptApiBase *script = getScriptApiBase(L);
751
752 v3f minp = read_v3f(L, 1) * BS;
753 v3f maxp = read_v3f(L, 2) * BS;
754 aabb3f box(minp, maxp);
755 box.repair();
756 std::vector<ServerActiveObject *> objs;
757
758 auto include_obj_cb = [](ServerActiveObject *obj){ return !obj->isGone(); };
759 env->getObjectsInArea(objs, box, include_obj_cb);
760
761 int i = 0;
762 lua_createtable(L, objs.size(), 0);
763 for (const auto obj : objs) {
764 // Insert object reference into table
765 script->objectrefGetOrCreate(L, obj);
766 lua_rawseti(L, -2, ++i);
767 }
768 return 1;
769 }
770
771 // set_timeofday(val)
772 // val = 0...1
l_set_timeofday(lua_State * L)773 int ModApiEnvMod::l_set_timeofday(lua_State *L)
774 {
775 GET_ENV_PTR;
776
777 // Do it
778 float timeofday_f = readParam<float>(L, 1);
779 luaL_argcheck(L, timeofday_f >= 0.0f && timeofday_f <= 1.0f, 1,
780 "value must be between 0 and 1");
781 int timeofday_mh = (int)(timeofday_f * 24000.0f);
782 // This should be set directly in the environment but currently
783 // such changes aren't immediately sent to the clients, so call
784 // the server instead.
785 //env->setTimeOfDay(timeofday_mh);
786 getServer(L)->setTimeOfDay(timeofday_mh);
787 return 0;
788 }
789
790 // get_timeofday() -> 0...1
l_get_timeofday(lua_State * L)791 int ModApiEnvMod::l_get_timeofday(lua_State *L)
792 {
793 GET_PLAIN_ENV_PTR;
794
795 // Do it
796 int timeofday_mh = env->getTimeOfDay();
797 float timeofday_f = (float)timeofday_mh / 24000.0f;
798 lua_pushnumber(L, timeofday_f);
799 return 1;
800 }
801
802 // get_day_count() -> int
l_get_day_count(lua_State * L)803 int ModApiEnvMod::l_get_day_count(lua_State *L)
804 {
805 GET_PLAIN_ENV_PTR;
806
807 lua_pushnumber(L, env->getDayCount());
808 return 1;
809 }
810
811 // get_gametime()
l_get_gametime(lua_State * L)812 int ModApiEnvMod::l_get_gametime(lua_State *L)
813 {
814 GET_ENV_PTR;
815
816 int game_time = env->getGameTime();
817 lua_pushnumber(L, game_time);
818 return 1;
819 }
820
collectNodeIds(lua_State * L,int idx,const NodeDefManager * ndef,std::vector<content_t> & filter)821 void ModApiEnvMod::collectNodeIds(lua_State *L, int idx, const NodeDefManager *ndef,
822 std::vector<content_t> &filter)
823 {
824 if (lua_istable(L, idx)) {
825 lua_pushnil(L);
826 while (lua_next(L, idx) != 0) {
827 // key at index -2 and value at index -1
828 luaL_checktype(L, -1, LUA_TSTRING);
829 ndef->getIds(readParam<std::string>(L, -1), filter);
830 // removes value, keeps key for next iteration
831 lua_pop(L, 1);
832 }
833 } else if (lua_isstring(L, idx)) {
834 ndef->getIds(readParam<std::string>(L, 3), filter);
835 }
836 }
837
838 // find_node_near(pos, radius, nodenames, [search_center]) -> pos or nil
839 // nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
l_find_node_near(lua_State * L)840 int ModApiEnvMod::l_find_node_near(lua_State *L)
841 {
842 GET_PLAIN_ENV_PTR;
843
844 const NodeDefManager *ndef = env->getGameDef()->ndef();
845 Map &map = env->getMap();
846
847 v3s16 pos = read_v3s16(L, 1);
848 int radius = luaL_checkinteger(L, 2);
849 std::vector<content_t> filter;
850 collectNodeIds(L, 3, ndef, filter);
851
852 int start_radius = (lua_isboolean(L, 4) && readParam<bool>(L, 4)) ? 0 : 1;
853
854 #ifndef SERVER
855 // Client API limitations
856 if (Client *client = getClient(L))
857 radius = client->CSMClampRadius(pos, radius);
858 #endif
859
860 for (int d = start_radius; d <= radius; d++) {
861 const std::vector<v3s16> &list = FacePositionCache::getFacePositions(d);
862 for (const v3s16 &i : list) {
863 v3s16 p = pos + i;
864 content_t c = map.getNode(p).getContent();
865 if (CONTAINS(filter, c)) {
866 push_v3s16(L, p);
867 return 1;
868 }
869 }
870 }
871 return 0;
872 }
873
874 // find_nodes_in_area(minp, maxp, nodenames, [grouped])
l_find_nodes_in_area(lua_State * L)875 int ModApiEnvMod::l_find_nodes_in_area(lua_State *L)
876 {
877 GET_PLAIN_ENV_PTR;
878
879 v3s16 minp = read_v3s16(L, 1);
880 v3s16 maxp = read_v3s16(L, 2);
881 sortBoxVerticies(minp, maxp);
882
883 const NodeDefManager *ndef = env->getGameDef()->ndef();
884 Map &map = env->getMap();
885
886 #ifndef SERVER
887 if (Client *client = getClient(L)) {
888 minp = client->CSMClampPos(minp);
889 maxp = client->CSMClampPos(maxp);
890 }
891 #endif
892
893 v3s16 cube = maxp - minp + 1;
894 // Volume limit equal to 8 default mapchunks, (80 * 2) ^ 3 = 4,096,000
895 if ((u64)cube.X * (u64)cube.Y * (u64)cube.Z > 4096000) {
896 luaL_error(L, "find_nodes_in_area(): area volume"
897 " exceeds allowed value of 4096000");
898 return 0;
899 }
900
901 std::vector<content_t> filter;
902 collectNodeIds(L, 3, ndef, filter);
903
904 bool grouped = lua_isboolean(L, 4) && readParam<bool>(L, 4);
905
906 if (grouped) {
907 // create the table we will be returning
908 lua_createtable(L, 0, filter.size());
909 int base = lua_gettop(L);
910
911 // create one table for each filter
912 std::vector<u32> idx;
913 idx.resize(filter.size());
914 for (u32 i = 0; i < filter.size(); i++)
915 lua_newtable(L);
916
917 v3s16 p;
918 for (p.X = minp.X; p.X <= maxp.X; p.X++)
919 for (p.Y = minp.Y; p.Y <= maxp.Y; p.Y++)
920 for (p.Z = minp.Z; p.Z <= maxp.Z; p.Z++) {
921 content_t c = map.getNode(p).getContent();
922
923 auto it = std::find(filter.begin(), filter.end(), c);
924 if (it != filter.end()) {
925 // Calculate index of the table and append the position
926 u32 filt_index = it - filter.begin();
927 push_v3s16(L, p);
928 lua_rawseti(L, base + 1 + filt_index, ++idx[filt_index]);
929 }
930 }
931
932 // last filter table is at top of stack
933 u32 i = filter.size() - 1;
934 do {
935 if (idx[i] == 0) {
936 // No such node found -> drop the empty table
937 lua_pop(L, 1);
938 } else {
939 // This node was found -> put table into the return table
940 lua_setfield(L, base, ndef->get(filter[i]).name.c_str());
941 }
942 } while (i-- != 0);
943
944 assert(lua_gettop(L) == base);
945 return 1;
946 } else {
947 std::vector<u32> individual_count;
948 individual_count.resize(filter.size());
949
950 lua_newtable(L);
951 u32 i = 0;
952 v3s16 p;
953 for (p.X = minp.X; p.X <= maxp.X; p.X++)
954 for (p.Y = minp.Y; p.Y <= maxp.Y; p.Y++)
955 for (p.Z = minp.Z; p.Z <= maxp.Z; p.Z++) {
956 content_t c = env->getMap().getNode(p).getContent();
957
958 auto it = std::find(filter.begin(), filter.end(), c);
959 if (it != filter.end()) {
960 push_v3s16(L, p);
961 lua_rawseti(L, -2, ++i);
962
963 u32 filt_index = it - filter.begin();
964 individual_count[filt_index]++;
965 }
966 }
967
968 lua_createtable(L, 0, filter.size());
969 for (u32 i = 0; i < filter.size(); i++) {
970 lua_pushinteger(L, individual_count[i]);
971 lua_setfield(L, -2, ndef->get(filter[i]).name.c_str());
972 }
973 return 2;
974 }
975 }
976
977 // find_nodes_in_area_under_air(minp, maxp, nodenames) -> list of positions
978 // nodenames: e.g. {"ignore", "group:tree"} or "default:dirt"
l_find_nodes_in_area_under_air(lua_State * L)979 int ModApiEnvMod::l_find_nodes_in_area_under_air(lua_State *L)
980 {
981 /* Note: A similar but generalized (and therefore slower) version of this
982 * function could be created -- e.g. find_nodes_in_area_under -- which
983 * would accept a node name (or ID?) or list of names that the "above node"
984 * should be.
985 * TODO
986 */
987
988 GET_PLAIN_ENV_PTR;
989
990 v3s16 minp = read_v3s16(L, 1);
991 v3s16 maxp = read_v3s16(L, 2);
992 sortBoxVerticies(minp, maxp);
993
994 const NodeDefManager *ndef = env->getGameDef()->ndef();
995 Map &map = env->getMap();
996
997 #ifndef SERVER
998 if (Client *client = getClient(L)) {
999 minp = client->CSMClampPos(minp);
1000 maxp = client->CSMClampPos(maxp);
1001 }
1002 #endif
1003
1004 v3s16 cube = maxp - minp + 1;
1005 // Volume limit equal to 8 default mapchunks, (80 * 2) ^ 3 = 4,096,000
1006 if ((u64)cube.X * (u64)cube.Y * (u64)cube.Z > 4096000) {
1007 luaL_error(L, "find_nodes_in_area_under_air(): area volume"
1008 " exceeds allowed value of 4096000");
1009 return 0;
1010 }
1011
1012 std::vector<content_t> filter;
1013 collectNodeIds(L, 3, ndef, filter);
1014
1015 lua_newtable(L);
1016 u32 i = 0;
1017 v3s16 p;
1018 for (p.X = minp.X; p.X <= maxp.X; p.X++)
1019 for (p.Z = minp.Z; p.Z <= maxp.Z; p.Z++) {
1020 p.Y = minp.Y;
1021 content_t c = map.getNode(p).getContent();
1022 for (; p.Y <= maxp.Y; p.Y++) {
1023 v3s16 psurf(p.X, p.Y + 1, p.Z);
1024 content_t csurf = map.getNode(psurf).getContent();
1025 if (c != CONTENT_AIR && csurf == CONTENT_AIR &&
1026 CONTAINS(filter, c)) {
1027 push_v3s16(L, p);
1028 lua_rawseti(L, -2, ++i);
1029 }
1030 c = csurf;
1031 }
1032 }
1033 return 1;
1034 }
1035
1036 // get_perlin(seeddiff, octaves, persistence, scale)
1037 // returns world-specific PerlinNoise
l_get_perlin(lua_State * L)1038 int ModApiEnvMod::l_get_perlin(lua_State *L)
1039 {
1040 GET_ENV_PTR_NO_MAP_LOCK;
1041
1042 NoiseParams params;
1043
1044 if (lua_istable(L, 1)) {
1045 read_noiseparams(L, 1, ¶ms);
1046 } else {
1047 params.seed = luaL_checkint(L, 1);
1048 params.octaves = luaL_checkint(L, 2);
1049 params.persist = readParam<float>(L, 3);
1050 params.spread = v3f(1, 1, 1) * readParam<float>(L, 4);
1051 }
1052
1053 params.seed += (int)env->getServerMap().getSeed();
1054
1055 LuaPerlinNoise *n = new LuaPerlinNoise(¶ms);
1056 *(void **)(lua_newuserdata(L, sizeof(void *))) = n;
1057 luaL_getmetatable(L, "PerlinNoise");
1058 lua_setmetatable(L, -2);
1059 return 1;
1060 }
1061
1062 // get_perlin_map(noiseparams, size)
1063 // returns world-specific PerlinNoiseMap
l_get_perlin_map(lua_State * L)1064 int ModApiEnvMod::l_get_perlin_map(lua_State *L)
1065 {
1066 GET_ENV_PTR_NO_MAP_LOCK;
1067
1068 NoiseParams np;
1069 if (!read_noiseparams(L, 1, &np))
1070 return 0;
1071 v3s16 size = read_v3s16(L, 2);
1072
1073 s32 seed = (s32)(env->getServerMap().getSeed());
1074 LuaPerlinNoiseMap *n = new LuaPerlinNoiseMap(&np, seed, size);
1075 *(void **)(lua_newuserdata(L, sizeof(void *))) = n;
1076 luaL_getmetatable(L, "PerlinNoiseMap");
1077 lua_setmetatable(L, -2);
1078 return 1;
1079 }
1080
1081 // get_voxel_manip()
1082 // returns voxel manipulator
l_get_voxel_manip(lua_State * L)1083 int ModApiEnvMod::l_get_voxel_manip(lua_State *L)
1084 {
1085 GET_ENV_PTR;
1086
1087 Map *map = &(env->getMap());
1088 LuaVoxelManip *o = (lua_istable(L, 1) && lua_istable(L, 2)) ?
1089 new LuaVoxelManip(map, read_v3s16(L, 1), read_v3s16(L, 2)) :
1090 new LuaVoxelManip(map);
1091
1092 *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
1093 luaL_getmetatable(L, "VoxelManip");
1094 lua_setmetatable(L, -2);
1095 return 1;
1096 }
1097
1098 // clear_objects([options])
1099 // clear all objects in the environment
1100 // where options = {mode = "full" or "quick"}
l_clear_objects(lua_State * L)1101 int ModApiEnvMod::l_clear_objects(lua_State *L)
1102 {
1103 GET_ENV_PTR;
1104
1105 ClearObjectsMode mode = CLEAR_OBJECTS_MODE_QUICK;
1106 if (lua_istable(L, 1)) {
1107 mode = (ClearObjectsMode)getenumfield(L, 1, "mode",
1108 ModApiEnvMod::es_ClearObjectsMode, mode);
1109 }
1110
1111 env->clearObjects(mode);
1112 return 0;
1113 }
1114
1115 // line_of_sight(pos1, pos2) -> true/false, pos
l_line_of_sight(lua_State * L)1116 int ModApiEnvMod::l_line_of_sight(lua_State *L)
1117 {
1118 GET_PLAIN_ENV_PTR;
1119
1120 // read position 1 from lua
1121 v3f pos1 = checkFloatPos(L, 1);
1122 // read position 2 from lua
1123 v3f pos2 = checkFloatPos(L, 2);
1124
1125 v3s16 p;
1126
1127 bool success = env->line_of_sight(pos1, pos2, &p);
1128 lua_pushboolean(L, success);
1129 if (!success) {
1130 push_v3s16(L, p);
1131 return 2;
1132 }
1133 return 1;
1134 }
1135
1136 // fix_light(p1, p2)
l_fix_light(lua_State * L)1137 int ModApiEnvMod::l_fix_light(lua_State *L)
1138 {
1139 GET_ENV_PTR;
1140
1141 v3s16 blockpos1 = getContainerPos(read_v3s16(L, 1), MAP_BLOCKSIZE);
1142 v3s16 blockpos2 = getContainerPos(read_v3s16(L, 2), MAP_BLOCKSIZE);
1143 ServerMap &map = env->getServerMap();
1144 std::map<v3s16, MapBlock *> modified_blocks;
1145 bool success = true;
1146 v3s16 blockpos;
1147 for (blockpos.X = blockpos1.X; blockpos.X <= blockpos2.X; blockpos.X++)
1148 for (blockpos.Y = blockpos1.Y; blockpos.Y <= blockpos2.Y; blockpos.Y++)
1149 for (blockpos.Z = blockpos1.Z; blockpos.Z <= blockpos2.Z; blockpos.Z++) {
1150 success = success & map.repairBlockLight(blockpos, &modified_blocks);
1151 }
1152 if (!modified_blocks.empty()) {
1153 MapEditEvent event;
1154 event.type = MEET_OTHER;
1155 for (auto &modified_block : modified_blocks)
1156 event.modified_blocks.insert(modified_block.first);
1157
1158 map.dispatchEvent(event);
1159 }
1160 lua_pushboolean(L, success);
1161
1162 return 1;
1163 }
1164
l_raycast(lua_State * L)1165 int ModApiEnvMod::l_raycast(lua_State *L)
1166 {
1167 return LuaRaycast::create_object(L);
1168 }
1169
1170 // load_area(p1, [p2])
1171 // load mapblocks in area p1..p2, but do not generate map
l_load_area(lua_State * L)1172 int ModApiEnvMod::l_load_area(lua_State *L)
1173 {
1174 GET_ENV_PTR;
1175 MAP_LOCK_REQUIRED;
1176
1177 Map *map = &(env->getMap());
1178 v3s16 bp1 = getNodeBlockPos(check_v3s16(L, 1));
1179 if (!lua_istable(L, 2)) {
1180 map->emergeBlock(bp1);
1181 } else {
1182 v3s16 bp2 = getNodeBlockPos(check_v3s16(L, 2));
1183 sortBoxVerticies(bp1, bp2);
1184 for (s16 z = bp1.Z; z <= bp2.Z; z++)
1185 for (s16 y = bp1.Y; y <= bp2.Y; y++)
1186 for (s16 x = bp1.X; x <= bp2.X; x++) {
1187 map->emergeBlock(v3s16(x, y, z));
1188 }
1189 }
1190
1191 return 0;
1192 }
1193
1194 // emerge_area(p1, p2, [callback, context])
1195 // emerge mapblocks in area p1..p2, calls callback with context upon completion
l_emerge_area(lua_State * L)1196 int ModApiEnvMod::l_emerge_area(lua_State *L)
1197 {
1198 GET_ENV_PTR;
1199
1200 EmergeCompletionCallback callback = NULL;
1201 ScriptCallbackState *state = NULL;
1202
1203 EmergeManager *emerge = getServer(L)->getEmergeManager();
1204
1205 v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
1206 v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
1207 sortBoxVerticies(bpmin, bpmax);
1208
1209 size_t num_blocks = VoxelArea(bpmin, bpmax).getVolume();
1210 assert(num_blocks != 0);
1211
1212 if (lua_isfunction(L, 3)) {
1213 callback = LuaEmergeAreaCallback;
1214
1215 lua_pushvalue(L, 3);
1216 int callback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
1217
1218 lua_pushvalue(L, 4);
1219 int args_ref = luaL_ref(L, LUA_REGISTRYINDEX);
1220
1221 state = new ScriptCallbackState;
1222 state->script = getServer(L)->getScriptIface();
1223 state->callback_ref = callback_ref;
1224 state->args_ref = args_ref;
1225 state->refcount = num_blocks;
1226 state->origin = getScriptApiBase(L)->getOrigin();
1227 }
1228
1229 for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
1230 for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
1231 for (s16 x = bpmin.X; x <= bpmax.X; x++) {
1232 emerge->enqueueBlockEmergeEx(v3s16(x, y, z), PEER_ID_INEXISTENT,
1233 BLOCK_EMERGE_ALLOW_GEN | BLOCK_EMERGE_FORCE_QUEUE, callback, state);
1234 }
1235
1236 return 0;
1237 }
1238
1239 // delete_area(p1, p2)
1240 // delete mapblocks in area p1..p2
l_delete_area(lua_State * L)1241 int ModApiEnvMod::l_delete_area(lua_State *L)
1242 {
1243 GET_ENV_PTR;
1244
1245 v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
1246 v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
1247 sortBoxVerticies(bpmin, bpmax);
1248
1249 ServerMap &map = env->getServerMap();
1250
1251 MapEditEvent event;
1252 event.type = MEET_OTHER;
1253
1254 bool success = true;
1255 for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
1256 for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
1257 for (s16 x = bpmin.X; x <= bpmax.X; x++) {
1258 v3s16 bp(x, y, z);
1259 if (map.deleteBlock(bp)) {
1260 env->setStaticForActiveObjectsInBlock(bp, false);
1261 event.modified_blocks.insert(bp);
1262 } else {
1263 success = false;
1264 }
1265 }
1266
1267 map.dispatchEvent(event);
1268 lua_pushboolean(L, success);
1269 return 1;
1270 }
1271
1272 // find_path(pos1, pos2, searchdistance,
1273 // max_jump, max_drop, algorithm) -> table containing path
l_find_path(lua_State * L)1274 int ModApiEnvMod::l_find_path(lua_State *L)
1275 {
1276 GET_ENV_PTR;
1277
1278 v3s16 pos1 = read_v3s16(L, 1);
1279 v3s16 pos2 = read_v3s16(L, 2);
1280 unsigned int searchdistance = luaL_checkint(L, 3);
1281 unsigned int max_jump = luaL_checkint(L, 4);
1282 unsigned int max_drop = luaL_checkint(L, 5);
1283 PathAlgorithm algo = PA_PLAIN_NP;
1284 if (!lua_isnoneornil(L, 6)) {
1285 std::string algorithm = luaL_checkstring(L,6);
1286
1287 if (algorithm == "A*")
1288 algo = PA_PLAIN;
1289
1290 if (algorithm == "Dijkstra")
1291 algo = PA_DIJKSTRA;
1292 }
1293
1294 std::vector<v3s16> path = get_path(&env->getServerMap(), env->getGameDef()->ndef(), pos1, pos2,
1295 searchdistance, max_jump, max_drop, algo);
1296
1297 if (!path.empty()) {
1298 lua_createtable(L, path.size(), 0);
1299 int top = lua_gettop(L);
1300 unsigned int index = 1;
1301 for (const v3s16 &i : path) {
1302 lua_pushnumber(L,index);
1303 push_v3s16(L, i);
1304 lua_settable(L, top);
1305 index++;
1306 }
1307 return 1;
1308 }
1309
1310 return 0;
1311 }
1312
1313 // spawn_tree(pos, treedef)
l_spawn_tree(lua_State * L)1314 int ModApiEnvMod::l_spawn_tree(lua_State *L)
1315 {
1316 GET_ENV_PTR;
1317
1318 v3s16 p0 = read_v3s16(L, 1);
1319
1320 treegen::TreeDef tree_def;
1321 std::string trunk,leaves,fruit;
1322 const NodeDefManager *ndef = env->getGameDef()->ndef();
1323
1324 if(lua_istable(L, 2))
1325 {
1326 getstringfield(L, 2, "axiom", tree_def.initial_axiom);
1327 getstringfield(L, 2, "rules_a", tree_def.rules_a);
1328 getstringfield(L, 2, "rules_b", tree_def.rules_b);
1329 getstringfield(L, 2, "rules_c", tree_def.rules_c);
1330 getstringfield(L, 2, "rules_d", tree_def.rules_d);
1331 getstringfield(L, 2, "trunk", trunk);
1332 tree_def.trunknode=ndef->getId(trunk);
1333 getstringfield(L, 2, "leaves", leaves);
1334 tree_def.leavesnode=ndef->getId(leaves);
1335 tree_def.leaves2_chance=0;
1336 getstringfield(L, 2, "leaves2", leaves);
1337 if (!leaves.empty()) {
1338 tree_def.leaves2node=ndef->getId(leaves);
1339 getintfield(L, 2, "leaves2_chance", tree_def.leaves2_chance);
1340 }
1341 getintfield(L, 2, "angle", tree_def.angle);
1342 getintfield(L, 2, "iterations", tree_def.iterations);
1343 if (!getintfield(L, 2, "random_level", tree_def.iterations_random_level))
1344 tree_def.iterations_random_level = 0;
1345 getstringfield(L, 2, "trunk_type", tree_def.trunk_type);
1346 getboolfield(L, 2, "thin_branches", tree_def.thin_branches);
1347 tree_def.fruit_chance=0;
1348 getstringfield(L, 2, "fruit", fruit);
1349 if (!fruit.empty()) {
1350 tree_def.fruitnode=ndef->getId(fruit);
1351 getintfield(L, 2, "fruit_chance",tree_def.fruit_chance);
1352 }
1353 tree_def.explicit_seed = getintfield(L, 2, "seed", tree_def.seed);
1354 }
1355 else
1356 return 0;
1357
1358 ServerMap *map = &env->getServerMap();
1359 treegen::error e;
1360 if ((e = treegen::spawn_ltree (map, p0, ndef, tree_def)) != treegen::SUCCESS) {
1361 if (e == treegen::UNBALANCED_BRACKETS) {
1362 luaL_error(L, "spawn_tree(): closing ']' has no matching opening bracket");
1363 } else {
1364 luaL_error(L, "spawn_tree(): unknown error");
1365 }
1366 }
1367
1368 return 1;
1369 }
1370
1371 // transforming_liquid_add(pos)
l_transforming_liquid_add(lua_State * L)1372 int ModApiEnvMod::l_transforming_liquid_add(lua_State *L)
1373 {
1374 GET_ENV_PTR;
1375
1376 v3s16 p0 = read_v3s16(L, 1);
1377 env->getMap().transforming_liquid_add(p0);
1378 return 1;
1379 }
1380
1381 // forceload_block(blockpos)
1382 // blockpos = {x=num, y=num, z=num}
l_forceload_block(lua_State * L)1383 int ModApiEnvMod::l_forceload_block(lua_State *L)
1384 {
1385 GET_ENV_PTR;
1386
1387 v3s16 blockpos = read_v3s16(L, 1);
1388 env->getForceloadedBlocks()->insert(blockpos);
1389 return 0;
1390 }
1391
1392 // forceload_free_block(blockpos)
1393 // blockpos = {x=num, y=num, z=num}
l_forceload_free_block(lua_State * L)1394 int ModApiEnvMod::l_forceload_free_block(lua_State *L)
1395 {
1396 GET_ENV_PTR;
1397
1398 v3s16 blockpos = read_v3s16(L, 1);
1399 env->getForceloadedBlocks()->erase(blockpos);
1400 return 0;
1401 }
1402
1403 // get_translated_string(lang_code, string)
l_get_translated_string(lua_State * L)1404 int ModApiEnvMod::l_get_translated_string(lua_State * L)
1405 {
1406 GET_ENV_PTR;
1407 std::string lang_code = luaL_checkstring(L, 1);
1408 std::string string = luaL_checkstring(L, 2);
1409
1410 auto *translations = getServer(L)->getTranslationLanguage(lang_code);
1411 string = wide_to_utf8(translate_string(utf8_to_wide(string), translations));
1412 lua_pushstring(L, string.c_str());
1413 return 1;
1414 }
1415
Initialize(lua_State * L,int top)1416 void ModApiEnvMod::Initialize(lua_State *L, int top)
1417 {
1418 API_FCT(set_node);
1419 API_FCT(bulk_set_node);
1420 API_FCT(add_node);
1421 API_FCT(swap_node);
1422 API_FCT(add_item);
1423 API_FCT(remove_node);
1424 API_FCT(get_node);
1425 API_FCT(get_node_or_nil);
1426 API_FCT(get_node_light);
1427 API_FCT(get_natural_light);
1428 API_FCT(place_node);
1429 API_FCT(dig_node);
1430 API_FCT(punch_node);
1431 API_FCT(get_node_max_level);
1432 API_FCT(get_node_level);
1433 API_FCT(set_node_level);
1434 API_FCT(add_node_level);
1435 API_FCT(add_entity);
1436 API_FCT(find_nodes_with_meta);
1437 API_FCT(get_meta);
1438 API_FCT(get_node_timer);
1439 API_FCT(get_connected_players);
1440 API_FCT(get_player_by_name);
1441 API_FCT(get_objects_in_area);
1442 API_FCT(get_objects_inside_radius);
1443 API_FCT(set_timeofday);
1444 API_FCT(get_timeofday);
1445 API_FCT(get_gametime);
1446 API_FCT(get_day_count);
1447 API_FCT(find_node_near);
1448 API_FCT(find_nodes_in_area);
1449 API_FCT(find_nodes_in_area_under_air);
1450 API_FCT(fix_light);
1451 API_FCT(load_area);
1452 API_FCT(emerge_area);
1453 API_FCT(delete_area);
1454 API_FCT(get_perlin);
1455 API_FCT(get_perlin_map);
1456 API_FCT(get_voxel_manip);
1457 API_FCT(clear_objects);
1458 API_FCT(spawn_tree);
1459 API_FCT(find_path);
1460 API_FCT(line_of_sight);
1461 API_FCT(raycast);
1462 API_FCT(transforming_liquid_add);
1463 API_FCT(forceload_block);
1464 API_FCT(forceload_free_block);
1465 API_FCT(get_translated_string);
1466 }
1467
InitializeClient(lua_State * L,int top)1468 void ModApiEnvMod::InitializeClient(lua_State *L, int top)
1469 {
1470 API_FCT(get_node_light);
1471 API_FCT(get_timeofday);
1472 API_FCT(get_node_max_level);
1473 API_FCT(get_node_level);
1474 API_FCT(find_nodes_with_meta);
1475 API_FCT(find_node_near);
1476 API_FCT(find_nodes_in_area);
1477 API_FCT(find_nodes_in_area_under_air);
1478 API_FCT(line_of_sight);
1479 API_FCT(raycast);
1480 }
1481