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_server.h"
29 #include "environment.h"
32 #include "daynightratio.h"
33 #include "util/pointedthing.h"
34 #include "content_sao.h"
37 #include "pathfinder.h"
38 #include "face_position_cache.h"
40 struct EnumString ModApiEnvMod::es_ClearObjectsMode[] =
42 {CLEAR_OBJECTS_MODE_FULL, "full"},
43 {CLEAR_OBJECTS_MODE_QUICK, "quick"},
47 ///////////////////////////////////////////////////////////////////////////////
50 void LuaABM::trigger(ServerEnvironment *env, v3s16 p, MapNode n,
51 u32 active_object_count, u32 active_object_count_wider)
53 ServerScripting *scriptIface = env->getScriptIface();
54 scriptIface->realityCheck();
56 lua_State *L = scriptIface->getStack();
57 sanity_check(lua_checkstack(L, 20));
58 StackUnroller stack_unroller(L);
60 int error_handler = PUSH_ERROR_HANDLER(L);
62 // Get registered_abms
63 lua_getglobal(L, "core");
64 lua_getfield(L, -1, "registered_abms");
65 luaL_checktype(L, -1, LUA_TTABLE);
66 lua_remove(L, -2); // Remove core
68 // Get registered_abms[m_id]
69 lua_pushnumber(L, m_id);
73 lua_remove(L, -2); // Remove registered_abms
75 scriptIface->setOriginFromTable(-1);
78 luaL_checktype(L, -1, LUA_TTABLE);
79 lua_getfield(L, -1, "action");
80 luaL_checktype(L, -1, LUA_TFUNCTION);
81 lua_remove(L, -2); // Remove registered_abms[m_id]
83 pushnode(L, n, env->getGameDef()->ndef());
84 lua_pushnumber(L, active_object_count);
85 lua_pushnumber(L, active_object_count_wider);
87 int result = lua_pcall(L, 4, 0, error_handler);
89 scriptIface->scriptError(result, "LuaABM::trigger");
91 lua_pop(L, 1); // Pop error handler
94 void LuaLBM::trigger(ServerEnvironment *env, v3s16 p, MapNode n)
96 ServerScripting *scriptIface = env->getScriptIface();
97 scriptIface->realityCheck();
99 lua_State *L = scriptIface->getStack();
100 sanity_check(lua_checkstack(L, 20));
101 StackUnroller stack_unroller(L);
103 int error_handler = PUSH_ERROR_HANDLER(L);
105 // Get registered_lbms
106 lua_getglobal(L, "core");
107 lua_getfield(L, -1, "registered_lbms");
108 luaL_checktype(L, -1, LUA_TTABLE);
109 lua_remove(L, -2); // Remove core
111 // Get registered_lbms[m_id]
112 lua_pushnumber(L, m_id);
114 FATAL_ERROR_IF(lua_isnil(L, -1), "Entry with given id not found in registered_lbms table");
115 lua_remove(L, -2); // Remove registered_lbms
117 scriptIface->setOriginFromTable(-1);
120 luaL_checktype(L, -1, LUA_TTABLE);
121 lua_getfield(L, -1, "action");
122 luaL_checktype(L, -1, LUA_TFUNCTION);
123 lua_remove(L, -2); // Remove registered_lbms[m_id]
125 pushnode(L, n, env->getGameDef()->ndef());
127 int result = lua_pcall(L, 2, 0, error_handler);
129 scriptIface->scriptError(result, "LuaLBM::trigger");
131 lua_pop(L, 1); // Pop error handler
134 void LuaEmergeAreaCallback(v3s16 blockpos, EmergeAction action, void *param)
136 ScriptCallbackState *state = (ScriptCallbackState *)param;
137 assert(state != NULL);
138 assert(state->script != NULL);
139 assert(state->refcount > 0);
141 // state must be protected by envlock
142 Server *server = state->script->getServer();
143 MutexAutoLock envlock(server->m_env_mutex);
147 state->script->on_emerge_area_completion(blockpos, action, state);
149 if (state->refcount == 0)
153 // Exported functions
155 // set_node(pos, node)
156 // pos = {x=num, y=num, z=num}
157 int ModApiEnvMod::l_set_node(lua_State *L)
161 INodeDefManager *ndef = env->getGameDef()->ndef();
163 v3s16 pos = read_v3s16(L, 1);
164 MapNode n = readnode(L, 2, ndef);
166 bool succeeded = env->setNode(pos, n);
167 lua_pushboolean(L, succeeded);
171 int ModApiEnvMod::l_add_node(lua_State *L)
173 return l_set_node(L);
177 // pos = {x=num, y=num, z=num}
178 int ModApiEnvMod::l_remove_node(lua_State *L)
183 v3s16 pos = read_v3s16(L, 1);
185 bool succeeded = env->removeNode(pos);
186 lua_pushboolean(L, succeeded);
190 // swap_node(pos, node)
191 // pos = {x=num, y=num, z=num}
192 int ModApiEnvMod::l_swap_node(lua_State *L)
196 INodeDefManager *ndef = env->getGameDef()->ndef();
198 v3s16 pos = read_v3s16(L, 1);
199 MapNode n = readnode(L, 2, ndef);
201 bool succeeded = env->swapNode(pos, n);
202 lua_pushboolean(L, succeeded);
207 // pos = {x=num, y=num, z=num}
208 int ModApiEnvMod::l_get_node(lua_State *L)
213 v3s16 pos = read_v3s16(L, 1);
215 MapNode n = env->getMap().getNodeNoEx(pos);
217 pushnode(L, n, env->getGameDef()->ndef());
221 // get_node_or_nil(pos)
222 // pos = {x=num, y=num, z=num}
223 int ModApiEnvMod::l_get_node_or_nil(lua_State *L)
228 v3s16 pos = read_v3s16(L, 1);
231 MapNode n = env->getMap().getNodeNoEx(pos, &pos_ok);
234 pushnode(L, n, env->getGameDef()->ndef());
241 // get_node_light(pos, timeofday)
242 // pos = {x=num, y=num, z=num}
243 // timeofday: nil = current time, 0 = night, 0.5 = day
244 int ModApiEnvMod::l_get_node_light(lua_State *L)
249 v3s16 pos = read_v3s16(L, 1);
250 u32 time_of_day = env->getTimeOfDay();
251 if(lua_isnumber(L, 2))
252 time_of_day = 24000.0 * lua_tonumber(L, 2);
253 time_of_day %= 24000;
254 u32 dnr = time_to_daynight_ratio(time_of_day, true);
257 MapNode n = env->getMap().getNodeNoEx(pos, &is_position_ok);
258 if (is_position_ok) {
259 INodeDefManager *ndef = env->getGameDef()->ndef();
260 lua_pushinteger(L, n.getLightBlend(dnr, ndef));
267 // place_node(pos, node)
268 // pos = {x=num, y=num, z=num}
269 int ModApiEnvMod::l_place_node(lua_State *L)
273 ScriptApiItem *scriptIfaceItem = getScriptApi<ScriptApiItem>(L);
274 Server *server = getServer(L);
275 INodeDefManager *ndef = server->ndef();
276 IItemDefManager *idef = server->idef();
278 v3s16 pos = read_v3s16(L, 1);
279 MapNode n = readnode(L, 2, ndef);
281 // Don't attempt to load non-loaded area as of now
282 MapNode n_old = env->getMap().getNodeNoEx(pos);
283 if(n_old.getContent() == CONTENT_IGNORE){
284 lua_pushboolean(L, false);
287 // Create item to place
288 ItemStack item(ndef->get(n).name, 1, 0, idef);
289 // Make pointed position
290 PointedThing pointed;
291 pointed.type = POINTEDTHING_NODE;
292 pointed.node_abovesurface = pos;
293 pointed.node_undersurface = pos + v3s16(0,-1,0);
294 // Place it with a NULL placer (appears in Lua as a non-functional
296 bool success = scriptIfaceItem->item_OnPlace(item, NULL, pointed);
297 lua_pushboolean(L, success);
302 // pos = {x=num, y=num, z=num}
303 int ModApiEnvMod::l_dig_node(lua_State *L)
307 ScriptApiNode *scriptIfaceNode = getScriptApi<ScriptApiNode>(L);
309 v3s16 pos = read_v3s16(L, 1);
311 // Don't attempt to load non-loaded area as of now
312 MapNode n = env->getMap().getNodeNoEx(pos);
313 if(n.getContent() == CONTENT_IGNORE){
314 lua_pushboolean(L, false);
317 // Dig it out with a NULL digger (appears in Lua as a
318 // non-functional ObjectRef)
319 bool success = scriptIfaceNode->node_on_dig(pos, n, NULL);
320 lua_pushboolean(L, success);
325 // pos = {x=num, y=num, z=num}
326 int ModApiEnvMod::l_punch_node(lua_State *L)
330 ScriptApiNode *scriptIfaceNode = getScriptApi<ScriptApiNode>(L);
332 v3s16 pos = read_v3s16(L, 1);
334 // Don't attempt to load non-loaded area as of now
335 MapNode n = env->getMap().getNodeNoEx(pos);
336 if(n.getContent() == CONTENT_IGNORE){
337 lua_pushboolean(L, false);
340 // Punch it with a NULL puncher (appears in Lua as a non-functional
342 bool success = scriptIfaceNode->node_on_punch(pos, n, NULL, PointedThing());
343 lua_pushboolean(L, success);
347 // get_node_max_level(pos)
348 // pos = {x=num, y=num, z=num}
349 int ModApiEnvMod::l_get_node_max_level(lua_State *L)
351 Environment *env = getEnv(L);
356 v3s16 pos = read_v3s16(L, 1);
357 MapNode n = env->getMap().getNodeNoEx(pos);
358 lua_pushnumber(L, n.getMaxLevel(env->getGameDef()->ndef()));
362 // get_node_level(pos)
363 // pos = {x=num, y=num, z=num}
364 int ModApiEnvMod::l_get_node_level(lua_State *L)
366 Environment *env = getEnv(L);
371 v3s16 pos = read_v3s16(L, 1);
372 MapNode n = env->getMap().getNodeNoEx(pos);
373 lua_pushnumber(L, n.getLevel(env->getGameDef()->ndef()));
377 // set_node_level(pos, level)
378 // pos = {x=num, y=num, z=num}
380 int ModApiEnvMod::l_set_node_level(lua_State *L)
384 v3s16 pos = read_v3s16(L, 1);
386 if(lua_isnumber(L, 2))
387 level = lua_tonumber(L, 2);
388 MapNode n = env->getMap().getNodeNoEx(pos);
389 lua_pushnumber(L, n.setLevel(env->getGameDef()->ndef(), level));
390 env->setNode(pos, n);
394 // add_node_level(pos, level)
395 // pos = {x=num, y=num, z=num}
397 int ModApiEnvMod::l_add_node_level(lua_State *L)
401 v3s16 pos = read_v3s16(L, 1);
403 if(lua_isnumber(L, 2))
404 level = lua_tonumber(L, 2);
405 MapNode n = env->getMap().getNodeNoEx(pos);
406 lua_pushnumber(L, n.addLevel(env->getGameDef()->ndef(), level));
407 env->setNode(pos, n);
411 // find_nodes_with_meta(pos1, pos2)
412 int ModApiEnvMod::l_find_nodes_with_meta(lua_State *L)
416 std::vector<v3s16> positions = env->getMap().findNodesWithMetadata(
417 check_v3s16(L, 1), check_v3s16(L, 2));
420 for (size_t i = 0; i != positions.size(); i++) {
421 push_v3s16(L, positions[i]);
422 lua_rawseti(L, -2, i + 1);
429 int ModApiEnvMod::l_get_meta(lua_State *L)
434 v3s16 p = read_v3s16(L, 1);
435 NodeMetaRef::create(L, p, env);
439 // get_node_timer(pos)
440 int ModApiEnvMod::l_get_node_timer(lua_State *L)
445 v3s16 p = read_v3s16(L, 1);
446 NodeTimerRef::create(L, p, env);
450 // add_entity(pos, entityname, [staticdata]) -> ObjectRef or nil
451 // pos = {x=num, y=num, z=num}
452 int ModApiEnvMod::l_add_entity(lua_State *L)
457 v3f pos = checkFloatPos(L, 1);
459 const char *name = luaL_checkstring(L, 2);
461 const char *staticdata = luaL_optstring(L, 3, "");
463 ServerActiveObject *obj = new LuaEntitySAO(env, pos, name, staticdata);
464 int objectid = env->addActiveObject(obj);
465 // If failed to add, return nothing (reads as nil)
469 getScriptApiBase(L)->objectrefGetOrCreate(L, obj);
473 // add_item(pos, itemstack or itemstring or table) -> ObjectRef or nil
474 // pos = {x=num, y=num, z=num}
475 int ModApiEnvMod::l_add_item(lua_State *L)
480 //v3f pos = checkFloatPos(L, 1);
482 ItemStack item = read_item(L, 2,getServer(L)->idef());
483 if(item.empty() || !item.isKnown(getServer(L)->idef()))
486 int error_handler = PUSH_ERROR_HANDLER(L);
488 // Use spawn_item to spawn a __builtin:item
489 lua_getglobal(L, "core");
490 lua_getfield(L, -1, "spawn_item");
491 lua_remove(L, -2); // Remove core
495 lua_pushstring(L, item.getItemString().c_str());
497 PCALL_RESL(L, lua_pcall(L, 2, 1, error_handler));
499 lua_remove(L, error_handler);
503 // get_player_by_name(name)
504 int ModApiEnvMod::l_get_player_by_name(lua_State *L)
509 const char *name = luaL_checkstring(L, 1);
510 RemotePlayer *player = dynamic_cast<RemotePlayer *>(env->getPlayer(name));
515 PlayerSAO *sao = player->getPlayerSAO();
520 // Put player on stack
521 getScriptApiBase(L)->objectrefGetOrCreate(L, sao);
525 // get_objects_inside_radius(pos, radius)
526 int ModApiEnvMod::l_get_objects_inside_radius(lua_State *L)
531 v3f pos = checkFloatPos(L, 1);
532 float radius = luaL_checknumber(L, 2) * BS;
533 std::vector<u16> ids;
534 env->getObjectsInsideRadius(ids, pos, radius);
535 ScriptApiBase *script = getScriptApiBase(L);
536 lua_createtable(L, ids.size(), 0);
537 std::vector<u16>::const_iterator iter = ids.begin();
538 for(u32 i = 0; iter != ids.end(); ++iter) {
539 ServerActiveObject *obj = env->getActiveObject(*iter);
540 // Insert object reference into table
541 script->objectrefGetOrCreate(L, obj);
542 lua_rawseti(L, -2, ++i);
547 // set_timeofday(val)
549 int ModApiEnvMod::l_set_timeofday(lua_State *L)
554 float timeofday_f = luaL_checknumber(L, 1);
555 sanity_check(timeofday_f >= 0.0 && timeofday_f <= 1.0);
556 int timeofday_mh = (int)(timeofday_f * 24000.0);
557 // This should be set directly in the environment but currently
558 // such changes aren't immediately sent to the clients, so call
559 // the server instead.
560 //env->setTimeOfDay(timeofday_mh);
561 getServer(L)->setTimeOfDay(timeofday_mh);
565 // get_timeofday() -> 0...1
566 int ModApiEnvMod::l_get_timeofday(lua_State *L)
568 Environment *env = getEnv(L);
574 int timeofday_mh = env->getTimeOfDay();
575 float timeofday_f = (float)timeofday_mh / 24000.0f;
576 lua_pushnumber(L, timeofday_f);
580 // get_day_count() -> int
581 int ModApiEnvMod::l_get_day_count(lua_State *L)
583 Environment *env = getEnv(L);
588 lua_pushnumber(L, env->getDayCount());
593 int ModApiEnvMod::l_get_gametime(lua_State *L)
597 int game_time = env->getGameTime();
598 lua_pushnumber(L, game_time);
603 // find_node_near(pos, radius, nodenames, search_center) -> pos or nil
604 // nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
605 int ModApiEnvMod::l_find_node_near(lua_State *L)
607 Environment *env = getEnv(L);
612 INodeDefManager *ndef = getGameDef(L)->ndef();
613 v3s16 pos = read_v3s16(L, 1);
614 int radius = luaL_checkinteger(L, 2);
615 std::set<content_t> filter;
616 if (lua_istable(L, 3)) {
618 while (lua_next(L, 3) != 0) {
619 // key at index -2 and value at index -1
620 luaL_checktype(L, -1, LUA_TSTRING);
621 ndef->getIds(lua_tostring(L, -1), filter);
622 // removes value, keeps key for next iteration
625 } else if (lua_isstring(L, 3)) {
626 ndef->getIds(lua_tostring(L, 3), filter);
629 int start_radius = (lua_toboolean(L, 4)) ? 0 : 1;
630 for (int d = start_radius; d <= radius; d++) {
631 std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
632 for (std::vector<v3s16>::iterator i = list.begin();
633 i != list.end(); ++i) {
634 v3s16 p = pos + (*i);
635 content_t c = env->getMap().getNodeNoEx(p).getContent();
636 if (filter.count(c) != 0) {
645 // find_nodes_in_area(minp, maxp, nodenames) -> list of positions
646 // nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
647 int ModApiEnvMod::l_find_nodes_in_area(lua_State *L)
651 INodeDefManager *ndef = getServer(L)->ndef();
652 v3s16 minp = read_v3s16(L, 1);
653 v3s16 maxp = read_v3s16(L, 2);
654 sortBoxVerticies(minp, maxp);
656 v3s16 cube = maxp - minp + 1;
658 /* Limit for too large areas, assume default values
659 * and give tolerances of 1 node on each side
660 * (chunksize * MAP_BLOCKSIZE + 2)^3 = 551368
662 if ((u64)cube.X * (u64)cube.Y * (u64)cube.Z > 551368) {
663 luaL_error(L, "find_nodes_in_area(): area volume"
664 " exceeds allowed value of 551368");
668 std::set<content_t> filter;
669 if (lua_istable(L, 3)) {
671 while (lua_next(L, 3) != 0) {
672 // key at index -2 and value at index -1
673 luaL_checktype(L, -1, LUA_TSTRING);
674 ndef->getIds(lua_tostring(L, -1), filter);
675 // removes value, keeps key for next iteration
678 } else if (lua_isstring(L, 3)) {
679 ndef->getIds(lua_tostring(L, 3), filter);
682 std::unordered_map<content_t, u32> individual_count;
686 for (s16 x = minp.X; x <= maxp.X; x++)
687 for (s16 y = minp.Y; y <= maxp.Y; y++)
688 for (s16 z = minp.Z; z <= maxp.Z; z++) {
690 content_t c = env->getMap().getNodeNoEx(p).getContent();
691 if (filter.count(c) != 0) {
693 lua_rawseti(L, -2, ++i);
694 individual_count[c]++;
698 for (std::set<content_t>::const_iterator it = filter.begin();
699 it != filter.end(); ++it) {
700 lua_pushnumber(L, individual_count[*it]);
701 lua_setfield(L, -2, ndef->get(*it).name.c_str());
706 // find_nodes_in_area_under_air(minp, maxp, nodenames) -> list of positions
707 // nodenames: e.g. {"ignore", "group:tree"} or "default:dirt"
708 int ModApiEnvMod::l_find_nodes_in_area_under_air(lua_State *L)
710 /* Note: A similar but generalized (and therefore slower) version of this
711 * function could be created -- e.g. find_nodes_in_area_under -- which
712 * would accept a node name (or ID?) or list of names that the "above node"
719 INodeDefManager *ndef = getServer(L)->ndef();
720 v3s16 minp = read_v3s16(L, 1);
721 v3s16 maxp = read_v3s16(L, 2);
722 sortBoxVerticies(minp, maxp);
724 v3s16 cube = maxp - minp + 1;
726 /* Limit for too large areas, assume default values
727 * and give tolerances of 1 node on each side
728 * (chunksize * MAP_BLOCKSIZE + 2)^3 = 551368
730 if ((u64)cube.X * (u64)cube.Y * (u64)cube.Z > 551368) {
731 luaL_error(L, "find_nodes_in_area_under_air(): area volume"
732 " exceeds allowed value of 551368");
736 std::set<content_t> filter;
738 if (lua_istable(L, 3)) {
740 while (lua_next(L, 3) != 0) {
741 // key at index -2 and value at index -1
742 luaL_checktype(L, -1, LUA_TSTRING);
743 ndef->getIds(lua_tostring(L, -1), filter);
744 // removes value, keeps key for next iteration
747 } else if (lua_isstring(L, 3)) {
748 ndef->getIds(lua_tostring(L, 3), filter);
753 for (s16 x = minp.X; x <= maxp.X; x++)
754 for (s16 z = minp.Z; z <= maxp.Z; z++) {
757 content_t c = env->getMap().getNodeNoEx(p).getContent();
758 for (; y <= maxp.Y; y++) {
759 v3s16 psurf(x, y + 1, z);
760 content_t csurf = env->getMap().getNodeNoEx(psurf).getContent();
761 if (c != CONTENT_AIR && csurf == CONTENT_AIR &&
762 filter.count(c) != 0) {
763 push_v3s16(L, v3s16(x, y, z));
764 lua_rawseti(L, -2, ++i);
772 // get_perlin(seeddiff, octaves, persistence, scale)
773 // returns world-specific PerlinNoise
774 int ModApiEnvMod::l_get_perlin(lua_State *L)
776 GET_ENV_PTR_NO_MAP_LOCK;
780 if (lua_istable(L, 1)) {
781 read_noiseparams(L, 1, ¶ms);
783 params.seed = luaL_checkint(L, 1);
784 params.octaves = luaL_checkint(L, 2);
785 params.persist = luaL_checknumber(L, 3);
786 params.spread = v3f(1, 1, 1) * luaL_checknumber(L, 4);
789 params.seed += (int)env->getServerMap().getSeed();
791 LuaPerlinNoise *n = new LuaPerlinNoise(¶ms);
792 *(void **)(lua_newuserdata(L, sizeof(void *))) = n;
793 luaL_getmetatable(L, "PerlinNoise");
794 lua_setmetatable(L, -2);
798 // get_perlin_map(noiseparams, size)
799 // returns world-specific PerlinNoiseMap
800 int ModApiEnvMod::l_get_perlin_map(lua_State *L)
802 GET_ENV_PTR_NO_MAP_LOCK;
805 if (!read_noiseparams(L, 1, &np))
807 v3s16 size = read_v3s16(L, 2);
809 s32 seed = (s32)(env->getServerMap().getSeed());
810 LuaPerlinNoiseMap *n = new LuaPerlinNoiseMap(&np, seed, size);
811 *(void **)(lua_newuserdata(L, sizeof(void *))) = n;
812 luaL_getmetatable(L, "PerlinNoiseMap");
813 lua_setmetatable(L, -2);
818 // returns voxel manipulator
819 int ModApiEnvMod::l_get_voxel_manip(lua_State *L)
823 Map *map = &(env->getMap());
824 LuaVoxelManip *o = (lua_istable(L, 1) && lua_istable(L, 2)) ?
825 new LuaVoxelManip(map, read_v3s16(L, 1), read_v3s16(L, 2)) :
826 new LuaVoxelManip(map);
828 *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
829 luaL_getmetatable(L, "VoxelManip");
830 lua_setmetatable(L, -2);
834 // clear_objects([options])
835 // clear all objects in the environment
836 // where options = {mode = "full" or "quick"}
837 int ModApiEnvMod::l_clear_objects(lua_State *L)
841 ClearObjectsMode mode = CLEAR_OBJECTS_MODE_FULL;
842 if (lua_istable(L, 1)) {
843 mode = (ClearObjectsMode)getenumfield(L, 1, "mode",
844 ModApiEnvMod::es_ClearObjectsMode, mode);
847 env->clearObjects(mode);
851 // line_of_sight(pos1, pos2, stepsize) -> true/false, pos
852 int ModApiEnvMod::l_line_of_sight(lua_State *L)
854 float stepsize = 1.0;
858 // read position 1 from lua
859 v3f pos1 = checkFloatPos(L, 1);
860 // read position 2 from lua
861 v3f pos2 = checkFloatPos(L, 2);
862 //read step size from lua
863 if (lua_isnumber(L, 3)) {
864 stepsize = lua_tonumber(L, 3);
868 bool success = env->line_of_sight(pos1, pos2, stepsize, &p);
869 lua_pushboolean(L, success);
878 int ModApiEnvMod::l_fix_light(lua_State *L)
882 v3s16 blockpos1 = getContainerPos(read_v3s16(L, 1), MAP_BLOCKSIZE);
883 v3s16 blockpos2 = getContainerPos(read_v3s16(L, 2), MAP_BLOCKSIZE);
884 ServerMap &map = env->getServerMap();
885 std::map<v3s16, MapBlock *> modified_blocks;
888 for (blockpos.X = blockpos1.X; blockpos.X <= blockpos2.X; blockpos.X++)
889 for (blockpos.Y = blockpos1.Y; blockpos.Y <= blockpos2.Y; blockpos.Y++)
890 for (blockpos.Z = blockpos1.Z; blockpos.Z <= blockpos2.Z; blockpos.Z++) {
891 success = success & map.repairBlockLight(blockpos, &modified_blocks);
893 if (modified_blocks.size() > 0) {
895 event.type = MEET_OTHER;
896 for (std::map<v3s16, MapBlock *>::iterator it = modified_blocks.begin();
897 it != modified_blocks.end(); ++it)
898 event.modified_blocks.insert(it->first);
900 map.dispatchEvent(&event);
902 lua_pushboolean(L, success);
907 // emerge_area(p1, p2, [callback, context])
908 // emerge mapblocks in area p1..p2, calls callback with context upon completion
909 int ModApiEnvMod::l_emerge_area(lua_State *L)
913 EmergeCompletionCallback callback = NULL;
914 ScriptCallbackState *state = NULL;
916 EmergeManager *emerge = getServer(L)->getEmergeManager();
918 v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
919 v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
920 sortBoxVerticies(bpmin, bpmax);
922 size_t num_blocks = VoxelArea(bpmin, bpmax).getVolume();
923 assert(num_blocks != 0);
925 if (lua_isfunction(L, 3)) {
926 callback = LuaEmergeAreaCallback;
929 int callback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
932 int args_ref = luaL_ref(L, LUA_REGISTRYINDEX);
934 state = new ScriptCallbackState;
935 state->script = getServer(L)->getScriptIface();
936 state->callback_ref = callback_ref;
937 state->args_ref = args_ref;
938 state->refcount = num_blocks;
939 state->origin = getScriptApiBase(L)->getOrigin();
942 for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
943 for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
944 for (s16 x = bpmin.X; x <= bpmax.X; x++) {
945 emerge->enqueueBlockEmergeEx(v3s16(x, y, z), PEER_ID_INEXISTENT,
946 BLOCK_EMERGE_ALLOW_GEN | BLOCK_EMERGE_FORCE_QUEUE, callback, state);
952 // delete_area(p1, p2)
953 // delete mapblocks in area p1..p2
954 int ModApiEnvMod::l_delete_area(lua_State *L)
958 v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
959 v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
960 sortBoxVerticies(bpmin, bpmax);
962 ServerMap &map = env->getServerMap();
965 event.type = MEET_OTHER;
968 for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
969 for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
970 for (s16 x = bpmin.X; x <= bpmax.X; x++) {
972 if (map.deleteBlock(bp)) {
973 env->setStaticForActiveObjectsInBlock(bp, false);
974 event.modified_blocks.insert(bp);
980 map.dispatchEvent(&event);
981 lua_pushboolean(L, success);
985 // find_path(pos1, pos2, searchdistance,
986 // max_jump, max_drop, algorithm) -> table containing path
987 int ModApiEnvMod::l_find_path(lua_State *L)
991 v3s16 pos1 = read_v3s16(L, 1);
992 v3s16 pos2 = read_v3s16(L, 2);
993 unsigned int searchdistance = luaL_checkint(L, 3);
994 unsigned int max_jump = luaL_checkint(L, 4);
995 unsigned int max_drop = luaL_checkint(L, 5);
996 PathAlgorithm algo = PA_PLAIN_NP;
997 if (!lua_isnil(L, 6)) {
998 std::string algorithm = luaL_checkstring(L,6);
1000 if (algorithm == "A*")
1003 if (algorithm == "Dijkstra")
1007 std::vector<v3s16> path = get_path(env, pos1, pos2,
1008 searchdistance, max_jump, max_drop, algo);
1010 if (path.size() > 0)
1013 int top = lua_gettop(L);
1014 unsigned int index = 1;
1015 for (std::vector<v3s16>::iterator i = path.begin(); i != path.end(); ++i) {
1016 lua_pushnumber(L,index);
1018 lua_settable(L, top);
1027 // spawn_tree(pos, treedef)
1028 int ModApiEnvMod::l_spawn_tree(lua_State *L)
1032 v3s16 p0 = read_v3s16(L, 1);
1034 treegen::TreeDef tree_def;
1035 std::string trunk,leaves,fruit;
1036 INodeDefManager *ndef = env->getGameDef()->ndef();
1038 if(lua_istable(L, 2))
1040 getstringfield(L, 2, "axiom", tree_def.initial_axiom);
1041 getstringfield(L, 2, "rules_a", tree_def.rules_a);
1042 getstringfield(L, 2, "rules_b", tree_def.rules_b);
1043 getstringfield(L, 2, "rules_c", tree_def.rules_c);
1044 getstringfield(L, 2, "rules_d", tree_def.rules_d);
1045 getstringfield(L, 2, "trunk", trunk);
1046 tree_def.trunknode=ndef->getId(trunk);
1047 getstringfield(L, 2, "leaves", leaves);
1048 tree_def.leavesnode=ndef->getId(leaves);
1049 tree_def.leaves2_chance=0;
1050 getstringfield(L, 2, "leaves2", leaves);
1053 tree_def.leaves2node=ndef->getId(leaves);
1054 getintfield(L, 2, "leaves2_chance", tree_def.leaves2_chance);
1056 getintfield(L, 2, "angle", tree_def.angle);
1057 getintfield(L, 2, "iterations", tree_def.iterations);
1058 if (!getintfield(L, 2, "random_level", tree_def.iterations_random_level))
1059 tree_def.iterations_random_level = 0;
1060 getstringfield(L, 2, "trunk_type", tree_def.trunk_type);
1061 getboolfield(L, 2, "thin_branches", tree_def.thin_branches);
1062 tree_def.fruit_chance=0;
1063 getstringfield(L, 2, "fruit", fruit);
1066 tree_def.fruitnode=ndef->getId(fruit);
1067 getintfield(L, 2, "fruit_chance",tree_def.fruit_chance);
1069 tree_def.explicit_seed = getintfield(L, 2, "seed", tree_def.seed);
1075 if ((e = treegen::spawn_ltree (env, p0, ndef, tree_def)) != treegen::SUCCESS) {
1076 if (e == treegen::UNBALANCED_BRACKETS) {
1077 luaL_error(L, "spawn_tree(): closing ']' has no matching opening bracket");
1079 luaL_error(L, "spawn_tree(): unknown error");
1086 // transforming_liquid_add(pos)
1087 int ModApiEnvMod::l_transforming_liquid_add(lua_State *L)
1091 v3s16 p0 = read_v3s16(L, 1);
1092 env->getMap().transforming_liquid_add(p0);
1096 // forceload_block(blockpos)
1097 // blockpos = {x=num, y=num, z=num}
1098 int ModApiEnvMod::l_forceload_block(lua_State *L)
1102 v3s16 blockpos = read_v3s16(L, 1);
1103 env->getForceloadedBlocks()->insert(blockpos);
1107 // forceload_free_block(blockpos)
1108 // blockpos = {x=num, y=num, z=num}
1109 int ModApiEnvMod::l_forceload_free_block(lua_State *L)
1113 v3s16 blockpos = read_v3s16(L, 1);
1114 env->getForceloadedBlocks()->erase(blockpos);
1118 void ModApiEnvMod::Initialize(lua_State *L, int top)
1124 API_FCT(remove_node);
1126 API_FCT(get_node_or_nil);
1127 API_FCT(get_node_light);
1128 API_FCT(place_node);
1130 API_FCT(punch_node);
1131 API_FCT(get_node_max_level);
1132 API_FCT(get_node_level);
1133 API_FCT(set_node_level);
1134 API_FCT(add_node_level);
1135 API_FCT(add_entity);
1136 API_FCT(find_nodes_with_meta);
1138 API_FCT(get_node_timer);
1139 API_FCT(get_player_by_name);
1140 API_FCT(get_objects_inside_radius);
1141 API_FCT(set_timeofday);
1142 API_FCT(get_timeofday);
1143 API_FCT(get_gametime);
1144 API_FCT(get_day_count);
1145 API_FCT(find_node_near);
1146 API_FCT(find_nodes_in_area);
1147 API_FCT(find_nodes_in_area_under_air);
1149 API_FCT(emerge_area);
1150 API_FCT(delete_area);
1151 API_FCT(get_perlin);
1152 API_FCT(get_perlin_map);
1153 API_FCT(get_voxel_manip);
1154 API_FCT(clear_objects);
1155 API_FCT(spawn_tree);
1157 API_FCT(line_of_sight);
1158 API_FCT(transforming_liquid_add);
1159 API_FCT(forceload_block);
1160 API_FCT(forceload_free_block);
1163 void ModApiEnvMod::InitializeClient(lua_State *L, int top)
1165 API_FCT(get_timeofday);
1166 API_FCT(get_day_count);
1167 API_FCT(get_node_max_level);
1168 API_FCT(get_node_level);
1169 API_FCT(find_node_near);