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 "scripting_game.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 GameScripting *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 GameScripting *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) -> 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 ServerActiveObject *obj = new LuaEntitySAO(env, pos, name, "");
455 int objectid = env->addActiveObject(obj);
456 // If failed to add, return nothing (reads as nil)
460 getScriptApiBase(L)->objectrefGetOrCreate(L, obj);
464 // add_item(pos, itemstack or itemstring or table) -> ObjectRef or nil
465 // pos = {x=num, y=num, z=num}
466 int ModApiEnvMod::l_add_item(lua_State *L)
471 //v3f pos = checkFloatPos(L, 1);
473 ItemStack item = read_item(L, 2,getServer(L));
474 if(item.empty() || !item.isKnown(getServer(L)->idef()))
477 int error_handler = PUSH_ERROR_HANDLER(L);
479 // Use spawn_item to spawn a __builtin:item
480 lua_getglobal(L, "core");
481 lua_getfield(L, -1, "spawn_item");
482 lua_remove(L, -2); // Remove core
486 lua_pushstring(L, item.getItemString().c_str());
488 PCALL_RESL(L, lua_pcall(L, 2, 1, error_handler));
490 lua_remove(L, error_handler);
494 // get_player_by_name(name)
495 int ModApiEnvMod::l_get_player_by_name(lua_State *L)
500 const char *name = luaL_checkstring(L, 1);
501 RemotePlayer *player = dynamic_cast<RemotePlayer *>(env->getPlayer(name));
506 PlayerSAO *sao = player->getPlayerSAO();
511 // Put player on stack
512 getScriptApiBase(L)->objectrefGetOrCreate(L, sao);
516 // get_objects_inside_radius(pos, radius)
517 int ModApiEnvMod::l_get_objects_inside_radius(lua_State *L)
522 v3f pos = checkFloatPos(L, 1);
523 float radius = luaL_checknumber(L, 2) * BS;
524 std::vector<u16> ids;
525 env->getObjectsInsideRadius(ids, pos, radius);
526 ScriptApiBase *script = getScriptApiBase(L);
527 lua_createtable(L, ids.size(), 0);
528 std::vector<u16>::const_iterator iter = ids.begin();
529 for(u32 i = 0; iter != ids.end(); iter++) {
530 ServerActiveObject *obj = env->getActiveObject(*iter);
531 // Insert object reference into table
532 script->objectrefGetOrCreate(L, obj);
533 lua_rawseti(L, -2, ++i);
538 // set_timeofday(val)
540 int ModApiEnvMod::l_set_timeofday(lua_State *L)
545 float timeofday_f = luaL_checknumber(L, 1);
546 sanity_check(timeofday_f >= 0.0 && timeofday_f <= 1.0);
547 int timeofday_mh = (int)(timeofday_f * 24000.0);
548 // This should be set directly in the environment but currently
549 // such changes aren't immediately sent to the clients, so call
550 // the server instead.
551 //env->setTimeOfDay(timeofday_mh);
552 getServer(L)->setTimeOfDay(timeofday_mh);
556 // get_timeofday() -> 0...1
557 int ModApiEnvMod::l_get_timeofday(lua_State *L)
562 int timeofday_mh = env->getTimeOfDay();
563 float timeofday_f = (float)timeofday_mh / 24000.0;
564 lua_pushnumber(L, timeofday_f);
568 // get_day_count() -> int
569 int ModApiEnvMod::l_get_day_count(lua_State *L)
573 lua_pushnumber(L, env->getDayCount());
578 int ModApiEnvMod::l_get_gametime(lua_State *L)
582 int game_time = env->getGameTime();
583 lua_pushnumber(L, game_time);
588 // find_node_near(pos, radius, nodenames) -> pos or nil
589 // nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
590 int ModApiEnvMod::l_find_node_near(lua_State *L)
594 INodeDefManager *ndef = getServer(L)->ndef();
595 v3s16 pos = read_v3s16(L, 1);
596 int radius = luaL_checkinteger(L, 2);
597 std::set<content_t> filter;
598 if(lua_istable(L, 3)){
601 while(lua_next(L, table) != 0){
602 // key at index -2 and value at index -1
603 luaL_checktype(L, -1, LUA_TSTRING);
604 ndef->getIds(lua_tostring(L, -1), filter);
605 // removes value, keeps key for next iteration
608 } else if(lua_isstring(L, 3)){
609 ndef->getIds(lua_tostring(L, 3), filter);
612 for(int d=1; d<=radius; d++){
613 std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
614 for(std::vector<v3s16>::iterator i = list.begin();
615 i != list.end(); ++i){
616 v3s16 p = pos + (*i);
617 content_t c = env->getMap().getNodeNoEx(p).getContent();
618 if(filter.count(c) != 0){
627 // find_nodes_in_area(minp, maxp, nodenames) -> list of positions
628 // nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
629 int ModApiEnvMod::l_find_nodes_in_area(lua_State *L)
633 INodeDefManager *ndef = getServer(L)->ndef();
634 v3s16 minp = read_v3s16(L, 1);
635 v3s16 maxp = read_v3s16(L, 2);
636 std::set<content_t> filter;
637 if(lua_istable(L, 3)) {
640 while(lua_next(L, table) != 0) {
641 // key at index -2 and value at index -1
642 luaL_checktype(L, -1, LUA_TSTRING);
643 ndef->getIds(lua_tostring(L, -1), filter);
644 // removes value, keeps key for next iteration
647 } else if(lua_isstring(L, 3)) {
648 ndef->getIds(lua_tostring(L, 3), filter);
651 std::map<content_t, u16> individual_count;
655 for (s16 x = minp.X; x <= maxp.X; x++)
656 for (s16 y = minp.Y; y <= maxp.Y; y++)
657 for (s16 z = minp.Z; z <= maxp.Z; z++) {
659 content_t c = env->getMap().getNodeNoEx(p).getContent();
660 if (filter.count(c) != 0) {
662 lua_rawseti(L, -2, ++i);
663 individual_count[c]++;
667 for (std::set<content_t>::iterator it = filter.begin();
668 it != filter.end(); ++it) {
669 lua_pushnumber(L, individual_count[*it]);
670 lua_setfield(L, -2, ndef->get(*it).name.c_str());
675 // find_nodes_in_area_under_air(minp, maxp, nodenames) -> list of positions
676 // nodenames: e.g. {"ignore", "group:tree"} or "default:dirt"
677 int ModApiEnvMod::l_find_nodes_in_area_under_air(lua_State *L)
679 /* Note: A similar but generalized (and therefore slower) version of this
680 * function could be created -- e.g. find_nodes_in_area_under -- which
681 * would accept a node name (or ID?) or list of names that the "above node"
688 INodeDefManager *ndef = getServer(L)->ndef();
689 v3s16 minp = read_v3s16(L, 1);
690 v3s16 maxp = read_v3s16(L, 2);
691 std::set<content_t> filter;
693 if (lua_istable(L, 3)) {
696 while(lua_next(L, table) != 0) {
697 // key at index -2 and value at index -1
698 luaL_checktype(L, -1, LUA_TSTRING);
699 ndef->getIds(lua_tostring(L, -1), filter);
700 // removes value, keeps key for next iteration
703 } else if (lua_isstring(L, 3)) {
704 ndef->getIds(lua_tostring(L, 3), filter);
709 for (s16 x = minp.X; x <= maxp.X; x++)
710 for (s16 z = minp.Z; z <= maxp.Z; z++) {
713 content_t c = env->getMap().getNodeNoEx(p).getContent();
714 for (; y <= maxp.Y; y++) {
715 v3s16 psurf(x, y + 1, z);
716 content_t csurf = env->getMap().getNodeNoEx(psurf).getContent();
717 if(c != CONTENT_AIR && csurf == CONTENT_AIR &&
718 filter.count(c) != 0) {
719 push_v3s16(L, v3s16(x, y, z));
720 lua_rawseti(L, -2, ++i);
728 // get_perlin(seeddiff, octaves, persistence, scale)
729 // returns world-specific PerlinNoise
730 int ModApiEnvMod::l_get_perlin(lua_State *L)
732 GET_ENV_PTR_NO_MAP_LOCK;
736 if (lua_istable(L, 1)) {
737 read_noiseparams(L, 1, ¶ms);
739 params.seed = luaL_checkint(L, 1);
740 params.octaves = luaL_checkint(L, 2);
741 params.persist = luaL_checknumber(L, 3);
742 params.spread = v3f(1, 1, 1) * luaL_checknumber(L, 4);
745 params.seed += (int)env->getServerMap().getSeed();
747 LuaPerlinNoise *n = new LuaPerlinNoise(¶ms);
748 *(void **)(lua_newuserdata(L, sizeof(void *))) = n;
749 luaL_getmetatable(L, "PerlinNoise");
750 lua_setmetatable(L, -2);
754 // get_perlin_map(noiseparams, size)
755 // returns world-specific PerlinNoiseMap
756 int ModApiEnvMod::l_get_perlin_map(lua_State *L)
758 GET_ENV_PTR_NO_MAP_LOCK;
761 if (!read_noiseparams(L, 1, &np))
763 v3s16 size = read_v3s16(L, 2);
765 s32 seed = (s32)(env->getServerMap().getSeed());
766 LuaPerlinNoiseMap *n = new LuaPerlinNoiseMap(&np, seed, size);
767 *(void **)(lua_newuserdata(L, sizeof(void *))) = n;
768 luaL_getmetatable(L, "PerlinNoiseMap");
769 lua_setmetatable(L, -2);
774 // returns voxel manipulator
775 int ModApiEnvMod::l_get_voxel_manip(lua_State *L)
779 Map *map = &(env->getMap());
780 LuaVoxelManip *o = (lua_istable(L, 1) && lua_istable(L, 2)) ?
781 new LuaVoxelManip(map, read_v3s16(L, 1), read_v3s16(L, 2)) :
782 new LuaVoxelManip(map);
784 *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
785 luaL_getmetatable(L, "VoxelManip");
786 lua_setmetatable(L, -2);
790 // clear_objects([options])
791 // clear all objects in the environment
792 // where options = {mode = "full" or "quick"}
793 int ModApiEnvMod::l_clear_objects(lua_State *L)
797 ClearObjectsMode mode = CLEAR_OBJECTS_MODE_FULL;
798 if (lua_istable(L, 1)) {
799 mode = (ClearObjectsMode)getenumfield(L, 1, "mode",
800 ModApiEnvMod::es_ClearObjectsMode, mode);
803 env->clearObjects(mode);
807 // line_of_sight(pos1, pos2, stepsize) -> true/false, pos
808 int ModApiEnvMod::l_line_of_sight(lua_State *L)
810 float stepsize = 1.0;
814 // read position 1 from lua
815 v3f pos1 = checkFloatPos(L, 1);
816 // read position 2 from lua
817 v3f pos2 = checkFloatPos(L, 2);
818 //read step size from lua
819 if (lua_isnumber(L, 3)) {
820 stepsize = lua_tonumber(L, 3);
824 bool success = env->line_of_sight(pos1, pos2, stepsize, &p);
825 lua_pushboolean(L, success);
833 // emerge_area(p1, p2, [callback, context])
834 // emerge mapblocks in area p1..p2, calls callback with context upon completion
835 int ModApiEnvMod::l_emerge_area(lua_State *L)
839 EmergeCompletionCallback callback = NULL;
840 ScriptCallbackState *state = NULL;
842 EmergeManager *emerge = getServer(L)->getEmergeManager();
844 v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
845 v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
846 sortBoxVerticies(bpmin, bpmax);
848 size_t num_blocks = VoxelArea(bpmin, bpmax).getVolume();
849 assert(num_blocks != 0);
851 if (lua_isfunction(L, 3)) {
852 callback = LuaEmergeAreaCallback;
855 int callback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
858 int args_ref = luaL_ref(L, LUA_REGISTRYINDEX);
860 state = new ScriptCallbackState;
861 state->script = getServer(L)->getScriptIface();
862 state->callback_ref = callback_ref;
863 state->args_ref = args_ref;
864 state->refcount = num_blocks;
865 state->origin = getScriptApiBase(L)->getOrigin();
868 for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
869 for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
870 for (s16 x = bpmin.X; x <= bpmax.X; x++) {
871 emerge->enqueueBlockEmergeEx(v3s16(x, y, z), PEER_ID_INEXISTENT,
872 BLOCK_EMERGE_ALLOW_GEN | BLOCK_EMERGE_FORCE_QUEUE, callback, state);
878 // delete_area(p1, p2)
879 // delete mapblocks in area p1..p2
880 int ModApiEnvMod::l_delete_area(lua_State *L)
884 v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
885 v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
886 sortBoxVerticies(bpmin, bpmax);
888 ServerMap &map = env->getServerMap();
891 event.type = MEET_OTHER;
894 for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
895 for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
896 for (s16 x = bpmin.X; x <= bpmax.X; x++) {
898 if (map.deleteBlock(bp)) {
899 env->setStaticForActiveObjectsInBlock(bp, false);
900 event.modified_blocks.insert(bp);
906 map.dispatchEvent(&event);
907 lua_pushboolean(L, success);
911 // find_path(pos1, pos2, searchdistance,
912 // max_jump, max_drop, algorithm) -> table containing path
913 int ModApiEnvMod::l_find_path(lua_State *L)
917 v3s16 pos1 = read_v3s16(L, 1);
918 v3s16 pos2 = read_v3s16(L, 2);
919 unsigned int searchdistance = luaL_checkint(L, 3);
920 unsigned int max_jump = luaL_checkint(L, 4);
921 unsigned int max_drop = luaL_checkint(L, 5);
922 PathAlgorithm algo = PA_PLAIN_NP;
923 if (!lua_isnil(L, 6)) {
924 std::string algorithm = luaL_checkstring(L,6);
926 if (algorithm == "A*")
929 if (algorithm == "Dijkstra")
933 std::vector<v3s16> path = get_path(env, pos1, pos2,
934 searchdistance, max_jump, max_drop, algo);
939 int top = lua_gettop(L);
940 unsigned int index = 1;
941 for (std::vector<v3s16>::iterator i = path.begin(); i != path.end();i++)
943 lua_pushnumber(L,index);
945 lua_settable(L, top);
954 // spawn_tree(pos, treedef)
955 int ModApiEnvMod::l_spawn_tree(lua_State *L)
959 v3s16 p0 = read_v3s16(L, 1);
961 treegen::TreeDef tree_def;
962 std::string trunk,leaves,fruit;
963 INodeDefManager *ndef = env->getGameDef()->ndef();
965 if(lua_istable(L, 2))
967 getstringfield(L, 2, "axiom", tree_def.initial_axiom);
968 getstringfield(L, 2, "rules_a", tree_def.rules_a);
969 getstringfield(L, 2, "rules_b", tree_def.rules_b);
970 getstringfield(L, 2, "rules_c", tree_def.rules_c);
971 getstringfield(L, 2, "rules_d", tree_def.rules_d);
972 getstringfield(L, 2, "trunk", trunk);
973 tree_def.trunknode=ndef->getId(trunk);
974 getstringfield(L, 2, "leaves", leaves);
975 tree_def.leavesnode=ndef->getId(leaves);
976 tree_def.leaves2_chance=0;
977 getstringfield(L, 2, "leaves2", leaves);
980 tree_def.leaves2node=ndef->getId(leaves);
981 getintfield(L, 2, "leaves2_chance", tree_def.leaves2_chance);
983 getintfield(L, 2, "angle", tree_def.angle);
984 getintfield(L, 2, "iterations", tree_def.iterations);
985 if (!getintfield(L, 2, "random_level", tree_def.iterations_random_level))
986 tree_def.iterations_random_level = 0;
987 getstringfield(L, 2, "trunk_type", tree_def.trunk_type);
988 getboolfield(L, 2, "thin_branches", tree_def.thin_branches);
989 tree_def.fruit_chance=0;
990 getstringfield(L, 2, "fruit", fruit);
993 tree_def.fruitnode=ndef->getId(fruit);
994 getintfield(L, 2, "fruit_chance",tree_def.fruit_chance);
996 tree_def.explicit_seed = getintfield(L, 2, "seed", tree_def.seed);
1002 if ((e = treegen::spawn_ltree (env, p0, ndef, tree_def)) != treegen::SUCCESS) {
1003 if (e == treegen::UNBALANCED_BRACKETS) {
1004 luaL_error(L, "spawn_tree(): closing ']' has no matching opening bracket");
1006 luaL_error(L, "spawn_tree(): unknown error");
1013 // transforming_liquid_add(pos)
1014 int ModApiEnvMod::l_transforming_liquid_add(lua_State *L)
1018 v3s16 p0 = read_v3s16(L, 1);
1019 env->getMap().transforming_liquid_add(p0);
1023 // forceload_block(blockpos)
1024 // blockpos = {x=num, y=num, z=num}
1025 int ModApiEnvMod::l_forceload_block(lua_State *L)
1029 v3s16 blockpos = read_v3s16(L, 1);
1030 env->getForceloadedBlocks()->insert(blockpos);
1034 // forceload_free_block(blockpos)
1035 // blockpos = {x=num, y=num, z=num}
1036 int ModApiEnvMod::l_forceload_free_block(lua_State *L)
1040 v3s16 blockpos = read_v3s16(L, 1);
1041 env->getForceloadedBlocks()->erase(blockpos);
1045 void ModApiEnvMod::Initialize(lua_State *L, int top)
1051 API_FCT(remove_node);
1053 API_FCT(get_node_or_nil);
1054 API_FCT(get_node_light);
1055 API_FCT(place_node);
1057 API_FCT(punch_node);
1058 API_FCT(get_node_max_level);
1059 API_FCT(get_node_level);
1060 API_FCT(set_node_level);
1061 API_FCT(add_node_level);
1062 API_FCT(add_entity);
1063 API_FCT(find_nodes_with_meta);
1065 API_FCT(get_node_timer);
1066 API_FCT(get_player_by_name);
1067 API_FCT(get_objects_inside_radius);
1068 API_FCT(set_timeofday);
1069 API_FCT(get_timeofday);
1070 API_FCT(get_gametime);
1071 API_FCT(get_day_count);
1072 API_FCT(find_node_near);
1073 API_FCT(find_nodes_in_area);
1074 API_FCT(find_nodes_in_area_under_air);
1075 API_FCT(emerge_area);
1076 API_FCT(delete_area);
1077 API_FCT(get_perlin);
1078 API_FCT(get_perlin_map);
1079 API_FCT(get_voxel_manip);
1080 API_FCT(clear_objects);
1081 API_FCT(spawn_tree);
1083 API_FCT(line_of_sight);
1084 API_FCT(transforming_liquid_add);
1085 API_FCT(forceload_block);
1086 API_FCT(forceload_free_block);