3 Copyright (C) 2013 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 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.
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.
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.
20 #include "lua_api/l_env.h"
21 #include "lua_api/l_internal.h"
22 #include "lua_api/l_nodemeta.h"
23 #include "lua_api/l_nodetimer.h"
24 #include "lua_api/l_noise.h"
25 #include "lua_api/l_vmanip.h"
26 #include "common/c_converter.h"
27 #include "common/c_content.h"
28 #include "serverscripting.h"
29 #include "environment.h"
32 #include "daynightratio.h"
33 #include "util/pointedthing.h"
34 #include "content_sao.h"
37 #include "pathfinder.h"
39 struct EnumString ModApiEnvMod::es_ClearObjectsMode[] =
41 {CLEAR_OBJECTS_MODE_FULL, "full"},
42 {CLEAR_OBJECTS_MODE_QUICK, "quick"},
46 ///////////////////////////////////////////////////////////////////////////////
49 void LuaABM::trigger(ServerEnvironment *env, v3s16 p, MapNode n,
50 u32 active_object_count, u32 active_object_count_wider)
52 ServerScripting *scriptIface = env->getScriptIface();
53 scriptIface->realityCheck();
55 lua_State *L = scriptIface->getStack();
56 sanity_check(lua_checkstack(L, 20));
57 StackUnroller stack_unroller(L);
59 int error_handler = PUSH_ERROR_HANDLER(L);
61 // Get registered_abms
62 lua_getglobal(L, "core");
63 lua_getfield(L, -1, "registered_abms");
64 luaL_checktype(L, -1, LUA_TTABLE);
65 lua_remove(L, -2); // Remove core
67 // Get registered_abms[m_id]
68 lua_pushnumber(L, m_id);
72 lua_remove(L, -2); // Remove registered_abms
74 scriptIface->setOriginFromTable(-1);
77 luaL_checktype(L, -1, LUA_TTABLE);
78 lua_getfield(L, -1, "action");
79 luaL_checktype(L, -1, LUA_TFUNCTION);
80 lua_remove(L, -2); // Remove registered_abms[m_id]
82 pushnode(L, n, env->getGameDef()->ndef());
83 lua_pushnumber(L, active_object_count);
84 lua_pushnumber(L, active_object_count_wider);
86 int result = lua_pcall(L, 4, 0, error_handler);
88 scriptIface->scriptError(result, "LuaABM::trigger");
90 lua_pop(L, 1); // Pop error handler
93 void LuaLBM::trigger(ServerEnvironment *env, v3s16 p, MapNode n)
95 ServerScripting *scriptIface = env->getScriptIface();
96 scriptIface->realityCheck();
98 lua_State *L = scriptIface->getStack();
99 sanity_check(lua_checkstack(L, 20));
100 StackUnroller stack_unroller(L);
102 int error_handler = PUSH_ERROR_HANDLER(L);
104 // Get registered_lbms
105 lua_getglobal(L, "core");
106 lua_getfield(L, -1, "registered_lbms");
107 luaL_checktype(L, -1, LUA_TTABLE);
108 lua_remove(L, -2); // Remove core
110 // Get registered_lbms[m_id]
111 lua_pushnumber(L, m_id);
113 FATAL_ERROR_IF(lua_isnil(L, -1), "Entry with given id not found in registered_lbms table");
114 lua_remove(L, -2); // Remove registered_lbms
116 scriptIface->setOriginFromTable(-1);
119 luaL_checktype(L, -1, LUA_TTABLE);
120 lua_getfield(L, -1, "action");
121 luaL_checktype(L, -1, LUA_TFUNCTION);
122 lua_remove(L, -2); // Remove registered_lbms[m_id]
124 pushnode(L, n, env->getGameDef()->ndef());
126 int result = lua_pcall(L, 2, 0, error_handler);
128 scriptIface->scriptError(result, "LuaLBM::trigger");
130 lua_pop(L, 1); // Pop error handler
133 void LuaEmergeAreaCallback(v3s16 blockpos, EmergeAction action, void *param)
135 ScriptCallbackState *state = (ScriptCallbackState *)param;
136 assert(state != NULL);
137 assert(state->script != NULL);
138 assert(state->refcount > 0);
140 // state must be protected by envlock
141 Server *server = state->script->getServer();
142 MutexAutoLock envlock(server->m_env_mutex);
146 state->script->on_emerge_area_completion(blockpos, action, state);
148 if (state->refcount == 0)
152 // Exported functions
154 // set_node(pos, node)
155 // pos = {x=num, y=num, z=num}
156 int ModApiEnvMod::l_set_node(lua_State *L)
160 INodeDefManager *ndef = env->getGameDef()->ndef();
162 v3s16 pos = read_v3s16(L, 1);
163 MapNode n = readnode(L, 2, ndef);
165 bool succeeded = env->setNode(pos, n);
166 lua_pushboolean(L, succeeded);
170 int ModApiEnvMod::l_add_node(lua_State *L)
172 return l_set_node(L);
176 // pos = {x=num, y=num, z=num}
177 int ModApiEnvMod::l_remove_node(lua_State *L)
182 v3s16 pos = read_v3s16(L, 1);
184 bool succeeded = env->removeNode(pos);
185 lua_pushboolean(L, succeeded);
189 // swap_node(pos, node)
190 // pos = {x=num, y=num, z=num}
191 int ModApiEnvMod::l_swap_node(lua_State *L)
195 INodeDefManager *ndef = env->getGameDef()->ndef();
197 v3s16 pos = read_v3s16(L, 1);
198 MapNode n = readnode(L, 2, ndef);
200 bool succeeded = env->swapNode(pos, n);
201 lua_pushboolean(L, succeeded);
206 // pos = {x=num, y=num, z=num}
207 int ModApiEnvMod::l_get_node(lua_State *L)
212 v3s16 pos = read_v3s16(L, 1);
214 MapNode n = env->getMap().getNodeNoEx(pos);
216 pushnode(L, n, env->getGameDef()->ndef());
220 // get_node_or_nil(pos)
221 // pos = {x=num, y=num, z=num}
222 int ModApiEnvMod::l_get_node_or_nil(lua_State *L)
227 v3s16 pos = read_v3s16(L, 1);
230 MapNode n = env->getMap().getNodeNoEx(pos, &pos_ok);
233 pushnode(L, n, env->getGameDef()->ndef());
240 // get_node_light(pos, timeofday)
241 // pos = {x=num, y=num, z=num}
242 // timeofday: nil = current time, 0 = night, 0.5 = day
243 int ModApiEnvMod::l_get_node_light(lua_State *L)
248 v3s16 pos = read_v3s16(L, 1);
249 u32 time_of_day = env->getTimeOfDay();
250 if(lua_isnumber(L, 2))
251 time_of_day = 24000.0 * lua_tonumber(L, 2);
252 time_of_day %= 24000;
253 u32 dnr = time_to_daynight_ratio(time_of_day, true);
256 MapNode n = env->getMap().getNodeNoEx(pos, &is_position_ok);
257 if (is_position_ok) {
258 INodeDefManager *ndef = env->getGameDef()->ndef();
259 lua_pushinteger(L, n.getLightBlend(dnr, ndef));
266 // place_node(pos, node)
267 // pos = {x=num, y=num, z=num}
268 int ModApiEnvMod::l_place_node(lua_State *L)
272 ScriptApiItem *scriptIfaceItem = getScriptApi<ScriptApiItem>(L);
273 Server *server = getServer(L);
274 INodeDefManager *ndef = server->ndef();
275 IItemDefManager *idef = server->idef();
277 v3s16 pos = read_v3s16(L, 1);
278 MapNode n = readnode(L, 2, ndef);
280 // Don't attempt to load non-loaded area as of now
281 MapNode n_old = env->getMap().getNodeNoEx(pos);
282 if(n_old.getContent() == CONTENT_IGNORE){
283 lua_pushboolean(L, false);
286 // Create item to place
287 ItemStack item(ndef->get(n).name, 1, 0, idef);
288 // Make pointed position
289 PointedThing pointed;
290 pointed.type = POINTEDTHING_NODE;
291 pointed.node_abovesurface = pos;
292 pointed.node_undersurface = pos + v3s16(0,-1,0);
293 // Place it with a NULL placer (appears in Lua as a non-functional
295 bool success = scriptIfaceItem->item_OnPlace(item, NULL, pointed);
296 lua_pushboolean(L, success);
301 // pos = {x=num, y=num, z=num}
302 int ModApiEnvMod::l_dig_node(lua_State *L)
306 ScriptApiNode *scriptIfaceNode = getScriptApi<ScriptApiNode>(L);
308 v3s16 pos = read_v3s16(L, 1);
310 // Don't attempt to load non-loaded area as of now
311 MapNode n = env->getMap().getNodeNoEx(pos);
312 if(n.getContent() == CONTENT_IGNORE){
313 lua_pushboolean(L, false);
316 // Dig it out with a NULL digger (appears in Lua as a
317 // non-functional ObjectRef)
318 bool success = scriptIfaceNode->node_on_dig(pos, n, NULL);
319 lua_pushboolean(L, success);
324 // pos = {x=num, y=num, z=num}
325 int ModApiEnvMod::l_punch_node(lua_State *L)
329 ScriptApiNode *scriptIfaceNode = getScriptApi<ScriptApiNode>(L);
331 v3s16 pos = read_v3s16(L, 1);
333 // Don't attempt to load non-loaded area as of now
334 MapNode n = env->getMap().getNodeNoEx(pos);
335 if(n.getContent() == CONTENT_IGNORE){
336 lua_pushboolean(L, false);
339 // Punch it with a NULL puncher (appears in Lua as a non-functional
341 bool success = scriptIfaceNode->node_on_punch(pos, n, NULL, PointedThing());
342 lua_pushboolean(L, success);
346 // get_node_max_level(pos)
347 // pos = {x=num, y=num, z=num}
348 int ModApiEnvMod::l_get_node_max_level(lua_State *L)
352 v3s16 pos = read_v3s16(L, 1);
353 MapNode n = env->getMap().getNodeNoEx(pos);
354 lua_pushnumber(L, n.getMaxLevel(env->getGameDef()->ndef()));
358 // get_node_level(pos)
359 // pos = {x=num, y=num, z=num}
360 int ModApiEnvMod::l_get_node_level(lua_State *L)
364 v3s16 pos = read_v3s16(L, 1);
365 MapNode n = env->getMap().getNodeNoEx(pos);
366 lua_pushnumber(L, n.getLevel(env->getGameDef()->ndef()));
370 // set_node_level(pos, level)
371 // pos = {x=num, y=num, z=num}
373 int ModApiEnvMod::l_set_node_level(lua_State *L)
377 v3s16 pos = read_v3s16(L, 1);
379 if(lua_isnumber(L, 2))
380 level = lua_tonumber(L, 2);
381 MapNode n = env->getMap().getNodeNoEx(pos);
382 lua_pushnumber(L, n.setLevel(env->getGameDef()->ndef(), level));
383 env->setNode(pos, n);
387 // add_node_level(pos, level)
388 // pos = {x=num, y=num, z=num}
390 int ModApiEnvMod::l_add_node_level(lua_State *L)
394 v3s16 pos = read_v3s16(L, 1);
396 if(lua_isnumber(L, 2))
397 level = lua_tonumber(L, 2);
398 MapNode n = env->getMap().getNodeNoEx(pos);
399 lua_pushnumber(L, n.addLevel(env->getGameDef()->ndef(), level));
400 env->setNode(pos, n);
404 // find_nodes_with_meta(pos1, pos2)
405 int ModApiEnvMod::l_find_nodes_with_meta(lua_State *L)
409 std::vector<v3s16> positions = env->getMap().findNodesWithMetadata(
410 check_v3s16(L, 1), check_v3s16(L, 2));
413 for (size_t i = 0; i != positions.size(); i++) {
414 push_v3s16(L, positions[i]);
415 lua_rawseti(L, -2, i + 1);
422 int ModApiEnvMod::l_get_meta(lua_State *L)
427 v3s16 p = read_v3s16(L, 1);
428 NodeMetaRef::create(L, p, env);
432 // get_node_timer(pos)
433 int ModApiEnvMod::l_get_node_timer(lua_State *L)
438 v3s16 p = read_v3s16(L, 1);
439 NodeTimerRef::create(L, p, env);
443 // add_entity(pos, entityname, [staticdata]) -> ObjectRef or nil
444 // pos = {x=num, y=num, z=num}
445 int ModApiEnvMod::l_add_entity(lua_State *L)
450 v3f pos = checkFloatPos(L, 1);
452 const char *name = luaL_checkstring(L, 2);
454 const char *staticdata = luaL_optstring(L, 3, "");
456 ServerActiveObject *obj = new LuaEntitySAO(env, pos, name, staticdata);
457 int objectid = env->addActiveObject(obj);
458 // If failed to add, return nothing (reads as nil)
462 getScriptApiBase(L)->objectrefGetOrCreate(L, obj);
466 // add_item(pos, itemstack or itemstring or table) -> ObjectRef or nil
467 // pos = {x=num, y=num, z=num}
468 int ModApiEnvMod::l_add_item(lua_State *L)
473 //v3f pos = checkFloatPos(L, 1);
475 ItemStack item = read_item(L, 2,getServer(L));
476 if(item.empty() || !item.isKnown(getServer(L)->idef()))
479 int error_handler = PUSH_ERROR_HANDLER(L);
481 // Use spawn_item to spawn a __builtin:item
482 lua_getglobal(L, "core");
483 lua_getfield(L, -1, "spawn_item");
484 lua_remove(L, -2); // Remove core
488 lua_pushstring(L, item.getItemString().c_str());
490 PCALL_RESL(L, lua_pcall(L, 2, 1, error_handler));
492 lua_remove(L, error_handler);
496 // get_player_by_name(name)
497 int ModApiEnvMod::l_get_player_by_name(lua_State *L)
502 const char *name = luaL_checkstring(L, 1);
503 RemotePlayer *player = dynamic_cast<RemotePlayer *>(env->getPlayer(name));
508 PlayerSAO *sao = player->getPlayerSAO();
513 // Put player on stack
514 getScriptApiBase(L)->objectrefGetOrCreate(L, sao);
518 // get_objects_inside_radius(pos, radius)
519 int ModApiEnvMod::l_get_objects_inside_radius(lua_State *L)
524 v3f pos = checkFloatPos(L, 1);
525 float radius = luaL_checknumber(L, 2) * BS;
526 std::vector<u16> ids;
527 env->getObjectsInsideRadius(ids, pos, radius);
528 ScriptApiBase *script = getScriptApiBase(L);
529 lua_createtable(L, ids.size(), 0);
530 std::vector<u16>::const_iterator iter = ids.begin();
531 for(u32 i = 0; iter != ids.end(); iter++) {
532 ServerActiveObject *obj = env->getActiveObject(*iter);
533 // Insert object reference into table
534 script->objectrefGetOrCreate(L, obj);
535 lua_rawseti(L, -2, ++i);
540 // set_timeofday(val)
542 int ModApiEnvMod::l_set_timeofday(lua_State *L)
547 float timeofday_f = luaL_checknumber(L, 1);
548 sanity_check(timeofday_f >= 0.0 && timeofday_f <= 1.0);
549 int timeofday_mh = (int)(timeofday_f * 24000.0);
550 // This should be set directly in the environment but currently
551 // such changes aren't immediately sent to the clients, so call
552 // the server instead.
553 //env->setTimeOfDay(timeofday_mh);
554 getServer(L)->setTimeOfDay(timeofday_mh);
558 // get_timeofday() -> 0...1
559 int ModApiEnvMod::l_get_timeofday(lua_State *L)
564 int timeofday_mh = env->getTimeOfDay();
565 float timeofday_f = (float)timeofday_mh / 24000.0;
566 lua_pushnumber(L, timeofday_f);
570 // get_day_count() -> int
571 int ModApiEnvMod::l_get_day_count(lua_State *L)
575 lua_pushnumber(L, env->getDayCount());
580 int ModApiEnvMod::l_get_gametime(lua_State *L)
584 int game_time = env->getGameTime();
585 lua_pushnumber(L, game_time);
590 // find_node_near(pos, radius, nodenames) -> pos or nil
591 // nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
592 int ModApiEnvMod::l_find_node_near(lua_State *L)
596 INodeDefManager *ndef = getServer(L)->ndef();
597 v3s16 pos = read_v3s16(L, 1);
598 int radius = luaL_checkinteger(L, 2);
599 std::set<content_t> filter;
600 if(lua_istable(L, 3)){
603 while(lua_next(L, table) != 0){
604 // key at index -2 and value at index -1
605 luaL_checktype(L, -1, LUA_TSTRING);
606 ndef->getIds(lua_tostring(L, -1), filter);
607 // removes value, keeps key for next iteration
610 } else if(lua_isstring(L, 3)){
611 ndef->getIds(lua_tostring(L, 3), filter);
614 for(int d=1; d<=radius; d++){
615 std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
616 for(std::vector<v3s16>::iterator i = list.begin();
617 i != list.end(); ++i){
618 v3s16 p = pos + (*i);
619 content_t c = env->getMap().getNodeNoEx(p).getContent();
620 if(filter.count(c) != 0){
629 // find_nodes_in_area(minp, maxp, nodenames) -> list of positions
630 // nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
631 int ModApiEnvMod::l_find_nodes_in_area(lua_State *L)
635 INodeDefManager *ndef = getServer(L)->ndef();
636 v3s16 minp = read_v3s16(L, 1);
637 v3s16 maxp = read_v3s16(L, 2);
638 std::set<content_t> filter;
639 if(lua_istable(L, 3)) {
642 while(lua_next(L, table) != 0) {
643 // key at index -2 and value at index -1
644 luaL_checktype(L, -1, LUA_TSTRING);
645 ndef->getIds(lua_tostring(L, -1), filter);
646 // removes value, keeps key for next iteration
649 } else if(lua_isstring(L, 3)) {
650 ndef->getIds(lua_tostring(L, 3), filter);
653 std::map<content_t, u16> individual_count;
657 for (s16 x = minp.X; x <= maxp.X; x++)
658 for (s16 y = minp.Y; y <= maxp.Y; y++)
659 for (s16 z = minp.Z; z <= maxp.Z; z++) {
661 content_t c = env->getMap().getNodeNoEx(p).getContent();
662 if (filter.count(c) != 0) {
664 lua_rawseti(L, -2, ++i);
665 individual_count[c]++;
669 for (std::set<content_t>::iterator it = filter.begin();
670 it != filter.end(); ++it) {
671 lua_pushnumber(L, individual_count[*it]);
672 lua_setfield(L, -2, ndef->get(*it).name.c_str());
677 // find_nodes_in_area_under_air(minp, maxp, nodenames) -> list of positions
678 // nodenames: e.g. {"ignore", "group:tree"} or "default:dirt"
679 int ModApiEnvMod::l_find_nodes_in_area_under_air(lua_State *L)
681 /* Note: A similar but generalized (and therefore slower) version of this
682 * function could be created -- e.g. find_nodes_in_area_under -- which
683 * would accept a node name (or ID?) or list of names that the "above node"
690 INodeDefManager *ndef = getServer(L)->ndef();
691 v3s16 minp = read_v3s16(L, 1);
692 v3s16 maxp = read_v3s16(L, 2);
693 std::set<content_t> filter;
695 if (lua_istable(L, 3)) {
698 while(lua_next(L, table) != 0) {
699 // key at index -2 and value at index -1
700 luaL_checktype(L, -1, LUA_TSTRING);
701 ndef->getIds(lua_tostring(L, -1), filter);
702 // removes value, keeps key for next iteration
705 } else if (lua_isstring(L, 3)) {
706 ndef->getIds(lua_tostring(L, 3), filter);
711 for (s16 x = minp.X; x <= maxp.X; x++)
712 for (s16 z = minp.Z; z <= maxp.Z; z++) {
715 content_t c = env->getMap().getNodeNoEx(p).getContent();
716 for (; y <= maxp.Y; y++) {
717 v3s16 psurf(x, y + 1, z);
718 content_t csurf = env->getMap().getNodeNoEx(psurf).getContent();
719 if(c != CONTENT_AIR && csurf == CONTENT_AIR &&
720 filter.count(c) != 0) {
721 push_v3s16(L, v3s16(x, y, z));
722 lua_rawseti(L, -2, ++i);
730 // get_perlin(seeddiff, octaves, persistence, scale)
731 // returns world-specific PerlinNoise
732 int ModApiEnvMod::l_get_perlin(lua_State *L)
734 GET_ENV_PTR_NO_MAP_LOCK;
738 if (lua_istable(L, 1)) {
739 read_noiseparams(L, 1, ¶ms);
741 params.seed = luaL_checkint(L, 1);
742 params.octaves = luaL_checkint(L, 2);
743 params.persist = luaL_checknumber(L, 3);
744 params.spread = v3f(1, 1, 1) * luaL_checknumber(L, 4);
747 params.seed += (int)env->getServerMap().getSeed();
749 LuaPerlinNoise *n = new LuaPerlinNoise(¶ms);
750 *(void **)(lua_newuserdata(L, sizeof(void *))) = n;
751 luaL_getmetatable(L, "PerlinNoise");
752 lua_setmetatable(L, -2);
756 // get_perlin_map(noiseparams, size)
757 // returns world-specific PerlinNoiseMap
758 int ModApiEnvMod::l_get_perlin_map(lua_State *L)
760 GET_ENV_PTR_NO_MAP_LOCK;
763 if (!read_noiseparams(L, 1, &np))
765 v3s16 size = read_v3s16(L, 2);
767 s32 seed = (s32)(env->getServerMap().getSeed());
768 LuaPerlinNoiseMap *n = new LuaPerlinNoiseMap(&np, seed, size);
769 *(void **)(lua_newuserdata(L, sizeof(void *))) = n;
770 luaL_getmetatable(L, "PerlinNoiseMap");
771 lua_setmetatable(L, -2);
776 // returns voxel manipulator
777 int ModApiEnvMod::l_get_voxel_manip(lua_State *L)
781 Map *map = &(env->getMap());
782 LuaVoxelManip *o = (lua_istable(L, 1) && lua_istable(L, 2)) ?
783 new LuaVoxelManip(map, read_v3s16(L, 1), read_v3s16(L, 2)) :
784 new LuaVoxelManip(map);
786 *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
787 luaL_getmetatable(L, "VoxelManip");
788 lua_setmetatable(L, -2);
792 // clear_objects([options])
793 // clear all objects in the environment
794 // where options = {mode = "full" or "quick"}
795 int ModApiEnvMod::l_clear_objects(lua_State *L)
799 ClearObjectsMode mode = CLEAR_OBJECTS_MODE_FULL;
800 if (lua_istable(L, 1)) {
801 mode = (ClearObjectsMode)getenumfield(L, 1, "mode",
802 ModApiEnvMod::es_ClearObjectsMode, mode);
805 env->clearObjects(mode);
809 // line_of_sight(pos1, pos2, stepsize) -> true/false, pos
810 int ModApiEnvMod::l_line_of_sight(lua_State *L)
812 float stepsize = 1.0;
816 // read position 1 from lua
817 v3f pos1 = checkFloatPos(L, 1);
818 // read position 2 from lua
819 v3f pos2 = checkFloatPos(L, 2);
820 //read step size from lua
821 if (lua_isnumber(L, 3)) {
822 stepsize = lua_tonumber(L, 3);
826 bool success = env->line_of_sight(pos1, pos2, stepsize, &p);
827 lua_pushboolean(L, success);
835 // emerge_area(p1, p2, [callback, context])
836 // emerge mapblocks in area p1..p2, calls callback with context upon completion
837 int ModApiEnvMod::l_emerge_area(lua_State *L)
841 EmergeCompletionCallback callback = NULL;
842 ScriptCallbackState *state = NULL;
844 EmergeManager *emerge = getServer(L)->getEmergeManager();
846 v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
847 v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
848 sortBoxVerticies(bpmin, bpmax);
850 size_t num_blocks = VoxelArea(bpmin, bpmax).getVolume();
851 assert(num_blocks != 0);
853 if (lua_isfunction(L, 3)) {
854 callback = LuaEmergeAreaCallback;
857 int callback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
860 int args_ref = luaL_ref(L, LUA_REGISTRYINDEX);
862 state = new ScriptCallbackState;
863 state->script = getServer(L)->getScriptIface();
864 state->callback_ref = callback_ref;
865 state->args_ref = args_ref;
866 state->refcount = num_blocks;
867 state->origin = getScriptApiBase(L)->getOrigin();
870 for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
871 for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
872 for (s16 x = bpmin.X; x <= bpmax.X; x++) {
873 emerge->enqueueBlockEmergeEx(v3s16(x, y, z), PEER_ID_INEXISTENT,
874 BLOCK_EMERGE_ALLOW_GEN | BLOCK_EMERGE_FORCE_QUEUE, callback, state);
880 // delete_area(p1, p2)
881 // delete mapblocks in area p1..p2
882 int ModApiEnvMod::l_delete_area(lua_State *L)
886 v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
887 v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
888 sortBoxVerticies(bpmin, bpmax);
890 ServerMap &map = env->getServerMap();
893 event.type = MEET_OTHER;
896 for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
897 for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
898 for (s16 x = bpmin.X; x <= bpmax.X; x++) {
900 if (map.deleteBlock(bp)) {
901 env->setStaticForActiveObjectsInBlock(bp, false);
902 event.modified_blocks.insert(bp);
908 map.dispatchEvent(&event);
909 lua_pushboolean(L, success);
913 // find_path(pos1, pos2, searchdistance,
914 // max_jump, max_drop, algorithm) -> table containing path
915 int ModApiEnvMod::l_find_path(lua_State *L)
919 v3s16 pos1 = read_v3s16(L, 1);
920 v3s16 pos2 = read_v3s16(L, 2);
921 unsigned int searchdistance = luaL_checkint(L, 3);
922 unsigned int max_jump = luaL_checkint(L, 4);
923 unsigned int max_drop = luaL_checkint(L, 5);
924 PathAlgorithm algo = PA_PLAIN_NP;
925 if (!lua_isnil(L, 6)) {
926 std::string algorithm = luaL_checkstring(L,6);
928 if (algorithm == "A*")
931 if (algorithm == "Dijkstra")
935 std::vector<v3s16> path = get_path(env, pos1, pos2,
936 searchdistance, max_jump, max_drop, algo);
941 int top = lua_gettop(L);
942 unsigned int index = 1;
943 for (std::vector<v3s16>::iterator i = path.begin(); i != path.end();i++)
945 lua_pushnumber(L,index);
947 lua_settable(L, top);
956 // spawn_tree(pos, treedef)
957 int ModApiEnvMod::l_spawn_tree(lua_State *L)
961 v3s16 p0 = read_v3s16(L, 1);
963 treegen::TreeDef tree_def;
964 std::string trunk,leaves,fruit;
965 INodeDefManager *ndef = env->getGameDef()->ndef();
967 if(lua_istable(L, 2))
969 getstringfield(L, 2, "axiom", tree_def.initial_axiom);
970 getstringfield(L, 2, "rules_a", tree_def.rules_a);
971 getstringfield(L, 2, "rules_b", tree_def.rules_b);
972 getstringfield(L, 2, "rules_c", tree_def.rules_c);
973 getstringfield(L, 2, "rules_d", tree_def.rules_d);
974 getstringfield(L, 2, "trunk", trunk);
975 tree_def.trunknode=ndef->getId(trunk);
976 getstringfield(L, 2, "leaves", leaves);
977 tree_def.leavesnode=ndef->getId(leaves);
978 tree_def.leaves2_chance=0;
979 getstringfield(L, 2, "leaves2", leaves);
982 tree_def.leaves2node=ndef->getId(leaves);
983 getintfield(L, 2, "leaves2_chance", tree_def.leaves2_chance);
985 getintfield(L, 2, "angle", tree_def.angle);
986 getintfield(L, 2, "iterations", tree_def.iterations);
987 if (!getintfield(L, 2, "random_level", tree_def.iterations_random_level))
988 tree_def.iterations_random_level = 0;
989 getstringfield(L, 2, "trunk_type", tree_def.trunk_type);
990 getboolfield(L, 2, "thin_branches", tree_def.thin_branches);
991 tree_def.fruit_chance=0;
992 getstringfield(L, 2, "fruit", fruit);
995 tree_def.fruitnode=ndef->getId(fruit);
996 getintfield(L, 2, "fruit_chance",tree_def.fruit_chance);
998 tree_def.explicit_seed = getintfield(L, 2, "seed", tree_def.seed);
1004 if ((e = treegen::spawn_ltree (env, p0, ndef, tree_def)) != treegen::SUCCESS) {
1005 if (e == treegen::UNBALANCED_BRACKETS) {
1006 luaL_error(L, "spawn_tree(): closing ']' has no matching opening bracket");
1008 luaL_error(L, "spawn_tree(): unknown error");
1015 // transforming_liquid_add(pos)
1016 int ModApiEnvMod::l_transforming_liquid_add(lua_State *L)
1020 v3s16 p0 = read_v3s16(L, 1);
1021 env->getMap().transforming_liquid_add(p0);
1025 // forceload_block(blockpos)
1026 // blockpos = {x=num, y=num, z=num}
1027 int ModApiEnvMod::l_forceload_block(lua_State *L)
1031 v3s16 blockpos = read_v3s16(L, 1);
1032 env->getForceloadedBlocks()->insert(blockpos);
1036 // forceload_free_block(blockpos)
1037 // blockpos = {x=num, y=num, z=num}
1038 int ModApiEnvMod::l_forceload_free_block(lua_State *L)
1042 v3s16 blockpos = read_v3s16(L, 1);
1043 env->getForceloadedBlocks()->erase(blockpos);
1047 void ModApiEnvMod::Initialize(lua_State *L, int top)
1053 API_FCT(remove_node);
1055 API_FCT(get_node_or_nil);
1056 API_FCT(get_node_light);
1057 API_FCT(place_node);
1059 API_FCT(punch_node);
1060 API_FCT(get_node_max_level);
1061 API_FCT(get_node_level);
1062 API_FCT(set_node_level);
1063 API_FCT(add_node_level);
1064 API_FCT(add_entity);
1065 API_FCT(find_nodes_with_meta);
1067 API_FCT(get_node_timer);
1068 API_FCT(get_player_by_name);
1069 API_FCT(get_objects_inside_radius);
1070 API_FCT(set_timeofday);
1071 API_FCT(get_timeofday);
1072 API_FCT(get_gametime);
1073 API_FCT(get_day_count);
1074 API_FCT(find_node_near);
1075 API_FCT(find_nodes_in_area);
1076 API_FCT(find_nodes_in_area_under_air);
1077 API_FCT(emerge_area);
1078 API_FCT(delete_area);
1079 API_FCT(get_perlin);
1080 API_FCT(get_perlin_map);
1081 API_FCT(get_voxel_manip);
1082 API_FCT(clear_objects);
1083 API_FCT(spawn_tree);
1085 API_FCT(line_of_sight);
1086 API_FCT(transforming_liquid_add);
1087 API_FCT(forceload_block);
1088 API_FCT(forceload_free_block);