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 ///////////////////////////////////////////////////////////////////////////////
42 void LuaABM::trigger(ServerEnvironment *env, v3s16 p, MapNode n,
43 u32 active_object_count, u32 active_object_count_wider)
45 GameScripting *scriptIface = env->getScriptIface();
46 scriptIface->realityCheck();
48 lua_State *L = scriptIface->getStack();
49 sanity_check(lua_checkstack(L, 20));
50 StackUnroller stack_unroller(L);
52 int error_handler = PUSH_ERROR_HANDLER(L);
54 // Get registered_abms
55 lua_getglobal(L, "core");
56 lua_getfield(L, -1, "registered_abms");
57 luaL_checktype(L, -1, LUA_TTABLE);
58 lua_remove(L, -2); // Remove core
60 // Get registered_abms[m_id]
61 lua_pushnumber(L, m_id);
65 lua_remove(L, -2); // Remove registered_abms
67 scriptIface->setOriginFromTable(-1);
70 luaL_checktype(L, -1, LUA_TTABLE);
71 lua_getfield(L, -1, "action");
72 luaL_checktype(L, -1, LUA_TFUNCTION);
73 lua_remove(L, -2); // Remove registered_abms[m_id]
75 pushnode(L, n, env->getGameDef()->ndef());
76 lua_pushnumber(L, active_object_count);
77 lua_pushnumber(L, active_object_count_wider);
79 int result = lua_pcall(L, 4, 0, error_handler);
81 scriptIface->scriptError(result, "LuaABM::trigger");
83 lua_pop(L, 1); // Pop error handler
86 void LuaEmergeAreaCallback(v3s16 blockpos, EmergeAction action, void *param)
88 ScriptCallbackState *state = (ScriptCallbackState *)param;
89 assert(state != NULL);
90 assert(state->script != NULL);
91 assert(state->refcount > 0);
95 state->script->on_emerge_area_completion(blockpos, action, state);
97 if (state->refcount == 0)
101 // Exported functions
103 // set_node(pos, node)
104 // pos = {x=num, y=num, z=num}
105 int ModApiEnvMod::l_set_node(lua_State *L)
109 INodeDefManager *ndef = env->getGameDef()->ndef();
111 v3s16 pos = read_v3s16(L, 1);
112 MapNode n = readnode(L, 2, ndef);
114 bool succeeded = env->setNode(pos, n);
115 lua_pushboolean(L, succeeded);
119 int ModApiEnvMod::l_add_node(lua_State *L)
121 return l_set_node(L);
125 // pos = {x=num, y=num, z=num}
126 int ModApiEnvMod::l_remove_node(lua_State *L)
131 v3s16 pos = read_v3s16(L, 1);
133 bool succeeded = env->removeNode(pos);
134 lua_pushboolean(L, succeeded);
138 // swap_node(pos, node)
139 // pos = {x=num, y=num, z=num}
140 int ModApiEnvMod::l_swap_node(lua_State *L)
144 INodeDefManager *ndef = env->getGameDef()->ndef();
146 v3s16 pos = read_v3s16(L, 1);
147 MapNode n = readnode(L, 2, ndef);
149 bool succeeded = env->swapNode(pos, n);
150 lua_pushboolean(L, succeeded);
155 // pos = {x=num, y=num, z=num}
156 int ModApiEnvMod::l_get_node(lua_State *L)
161 v3s16 pos = read_v3s16(L, 1);
163 MapNode n = env->getMap().getNodeNoEx(pos);
165 pushnode(L, n, env->getGameDef()->ndef());
169 // get_node_or_nil(pos)
170 // pos = {x=num, y=num, z=num}
171 int ModApiEnvMod::l_get_node_or_nil(lua_State *L)
176 v3s16 pos = read_v3s16(L, 1);
179 MapNode n = env->getMap().getNodeNoEx(pos, &pos_ok);
182 pushnode(L, n, env->getGameDef()->ndef());
189 // get_node_light(pos, timeofday)
190 // pos = {x=num, y=num, z=num}
191 // timeofday: nil = current time, 0 = night, 0.5 = day
192 int ModApiEnvMod::l_get_node_light(lua_State *L)
197 v3s16 pos = read_v3s16(L, 1);
198 u32 time_of_day = env->getTimeOfDay();
199 if(lua_isnumber(L, 2))
200 time_of_day = 24000.0 * lua_tonumber(L, 2);
201 time_of_day %= 24000;
202 u32 dnr = time_to_daynight_ratio(time_of_day, true);
205 MapNode n = env->getMap().getNodeNoEx(pos, &is_position_ok);
206 if (is_position_ok) {
207 INodeDefManager *ndef = env->getGameDef()->ndef();
208 lua_pushinteger(L, n.getLightBlend(dnr, ndef));
215 // place_node(pos, node)
216 // pos = {x=num, y=num, z=num}
217 int ModApiEnvMod::l_place_node(lua_State *L)
221 ScriptApiItem *scriptIfaceItem = getScriptApi<ScriptApiItem>(L);
222 Server *server = getServer(L);
223 INodeDefManager *ndef = server->ndef();
224 IItemDefManager *idef = server->idef();
226 v3s16 pos = read_v3s16(L, 1);
227 MapNode n = readnode(L, 2, ndef);
229 // Don't attempt to load non-loaded area as of now
230 MapNode n_old = env->getMap().getNodeNoEx(pos);
231 if(n_old.getContent() == CONTENT_IGNORE){
232 lua_pushboolean(L, false);
235 // Create item to place
236 ItemStack item(ndef->get(n).name, 1, 0, "", idef);
237 // Make pointed position
238 PointedThing pointed;
239 pointed.type = POINTEDTHING_NODE;
240 pointed.node_abovesurface = pos;
241 pointed.node_undersurface = pos + v3s16(0,-1,0);
242 // Place it with a NULL placer (appears in Lua as a non-functional
244 bool success = scriptIfaceItem->item_OnPlace(item, NULL, pointed);
245 lua_pushboolean(L, success);
250 // pos = {x=num, y=num, z=num}
251 int ModApiEnvMod::l_dig_node(lua_State *L)
255 ScriptApiNode *scriptIfaceNode = getScriptApi<ScriptApiNode>(L);
257 v3s16 pos = read_v3s16(L, 1);
259 // Don't attempt to load non-loaded area as of now
260 MapNode n = env->getMap().getNodeNoEx(pos);
261 if(n.getContent() == CONTENT_IGNORE){
262 lua_pushboolean(L, false);
265 // Dig it out with a NULL digger (appears in Lua as a
266 // non-functional ObjectRef)
267 bool success = scriptIfaceNode->node_on_dig(pos, n, NULL);
268 lua_pushboolean(L, success);
273 // pos = {x=num, y=num, z=num}
274 int ModApiEnvMod::l_punch_node(lua_State *L)
278 ScriptApiNode *scriptIfaceNode = getScriptApi<ScriptApiNode>(L);
280 v3s16 pos = read_v3s16(L, 1);
282 // Don't attempt to load non-loaded area as of now
283 MapNode n = env->getMap().getNodeNoEx(pos);
284 if(n.getContent() == CONTENT_IGNORE){
285 lua_pushboolean(L, false);
288 // Punch it with a NULL puncher (appears in Lua as a non-functional
290 bool success = scriptIfaceNode->node_on_punch(pos, n, NULL, PointedThing());
291 lua_pushboolean(L, success);
295 // get_node_max_level(pos)
296 // pos = {x=num, y=num, z=num}
297 int ModApiEnvMod::l_get_node_max_level(lua_State *L)
301 v3s16 pos = read_v3s16(L, 1);
302 MapNode n = env->getMap().getNodeNoEx(pos);
303 lua_pushnumber(L, n.getMaxLevel(env->getGameDef()->ndef()));
307 // get_node_level(pos)
308 // pos = {x=num, y=num, z=num}
309 int ModApiEnvMod::l_get_node_level(lua_State *L)
313 v3s16 pos = read_v3s16(L, 1);
314 MapNode n = env->getMap().getNodeNoEx(pos);
315 lua_pushnumber(L, n.getLevel(env->getGameDef()->ndef()));
319 // set_node_level(pos, level)
320 // pos = {x=num, y=num, z=num}
322 int ModApiEnvMod::l_set_node_level(lua_State *L)
326 v3s16 pos = read_v3s16(L, 1);
328 if(lua_isnumber(L, 2))
329 level = lua_tonumber(L, 2);
330 MapNode n = env->getMap().getNodeNoEx(pos);
331 lua_pushnumber(L, n.setLevel(env->getGameDef()->ndef(), level));
332 env->setNode(pos, n);
336 // add_node_level(pos, level)
337 // pos = {x=num, y=num, z=num}
339 int ModApiEnvMod::l_add_node_level(lua_State *L)
343 v3s16 pos = read_v3s16(L, 1);
345 if(lua_isnumber(L, 2))
346 level = lua_tonumber(L, 2);
347 MapNode n = env->getMap().getNodeNoEx(pos);
348 lua_pushnumber(L, n.addLevel(env->getGameDef()->ndef(), level));
349 env->setNode(pos, n);
353 // find_nodes_with_meta(pos1, pos2)
354 int ModApiEnvMod::l_find_nodes_with_meta(lua_State *L)
358 std::vector<v3s16> positions = env->getMap().findNodesWithMetadata(
359 check_v3s16(L, 1), check_v3s16(L, 2));
362 for (size_t i = 0; i != positions.size(); i++) {
363 push_v3s16(L, positions[i]);
364 lua_rawseti(L, -2, i + 1);
371 int ModApiEnvMod::l_get_meta(lua_State *L)
376 v3s16 p = read_v3s16(L, 1);
377 NodeMetaRef::create(L, p, env);
381 // get_node_timer(pos)
382 int ModApiEnvMod::l_get_node_timer(lua_State *L)
387 v3s16 p = read_v3s16(L, 1);
388 NodeTimerRef::create(L, p, env);
392 // add_entity(pos, entityname) -> ObjectRef or nil
393 // pos = {x=num, y=num, z=num}
394 int ModApiEnvMod::l_add_entity(lua_State *L)
399 v3f pos = checkFloatPos(L, 1);
401 const char *name = luaL_checkstring(L, 2);
403 ServerActiveObject *obj = new LuaEntitySAO(env, pos, name, "");
404 int objectid = env->addActiveObject(obj);
405 // If failed to add, return nothing (reads as nil)
409 getScriptApiBase(L)->objectrefGetOrCreate(L, obj);
413 // add_item(pos, itemstack or itemstring or table) -> ObjectRef or nil
414 // pos = {x=num, y=num, z=num}
415 int ModApiEnvMod::l_add_item(lua_State *L)
420 //v3f pos = checkFloatPos(L, 1);
422 ItemStack item = read_item(L, 2,getServer(L));
423 if(item.empty() || !item.isKnown(getServer(L)->idef()))
426 int error_handler = PUSH_ERROR_HANDLER(L);
428 // Use spawn_item to spawn a __builtin:item
429 lua_getglobal(L, "core");
430 lua_getfield(L, -1, "spawn_item");
431 lua_remove(L, -2); // Remove core
435 lua_pushstring(L, item.getItemString().c_str());
437 PCALL_RESL(L, lua_pcall(L, 2, 1, error_handler));
439 lua_remove(L, error_handler);
443 // get_player_by_name(name)
444 int ModApiEnvMod::l_get_player_by_name(lua_State *L)
449 const char *name = luaL_checkstring(L, 1);
450 Player *player = env->getPlayer(name);
455 PlayerSAO *sao = player->getPlayerSAO();
460 // Put player on stack
461 getScriptApiBase(L)->objectrefGetOrCreate(L, sao);
465 // get_objects_inside_radius(pos, radius)
466 int ModApiEnvMod::l_get_objects_inside_radius(lua_State *L)
471 v3f pos = checkFloatPos(L, 1);
472 float radius = luaL_checknumber(L, 2) * BS;
473 std::vector<u16> ids;
474 env->getObjectsInsideRadius(ids, pos, radius);
475 ScriptApiBase *script = getScriptApiBase(L);
476 lua_createtable(L, ids.size(), 0);
477 std::vector<u16>::const_iterator iter = ids.begin();
478 for(u32 i = 0; iter != ids.end(); iter++) {
479 ServerActiveObject *obj = env->getActiveObject(*iter);
480 // Insert object reference into table
481 script->objectrefGetOrCreate(L, obj);
482 lua_rawseti(L, -2, ++i);
487 // set_timeofday(val)
489 int ModApiEnvMod::l_set_timeofday(lua_State *L)
494 float timeofday_f = luaL_checknumber(L, 1);
495 sanity_check(timeofday_f >= 0.0 && timeofday_f <= 1.0);
496 int timeofday_mh = (int)(timeofday_f * 24000.0);
497 // This should be set directly in the environment but currently
498 // such changes aren't immediately sent to the clients, so call
499 // the server instead.
500 //env->setTimeOfDay(timeofday_mh);
501 getServer(L)->setTimeOfDay(timeofday_mh);
505 // get_timeofday() -> 0...1
506 int ModApiEnvMod::l_get_timeofday(lua_State *L)
511 int timeofday_mh = env->getTimeOfDay();
512 float timeofday_f = (float)timeofday_mh / 24000.0;
513 lua_pushnumber(L, timeofday_f);
518 int ModApiEnvMod::l_get_gametime(lua_State *L)
522 int game_time = env->getGameTime();
523 lua_pushnumber(L, game_time);
528 // find_node_near(pos, radius, nodenames) -> pos or nil
529 // nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
530 int ModApiEnvMod::l_find_node_near(lua_State *L)
534 INodeDefManager *ndef = getServer(L)->ndef();
535 v3s16 pos = read_v3s16(L, 1);
536 int radius = luaL_checkinteger(L, 2);
537 std::set<content_t> filter;
538 if(lua_istable(L, 3)){
541 while(lua_next(L, table) != 0){
542 // key at index -2 and value at index -1
543 luaL_checktype(L, -1, LUA_TSTRING);
544 ndef->getIds(lua_tostring(L, -1), filter);
545 // removes value, keeps key for next iteration
548 } else if(lua_isstring(L, 3)){
549 ndef->getIds(lua_tostring(L, 3), filter);
552 for(int d=1; d<=radius; d++){
553 std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
554 for(std::vector<v3s16>::iterator i = list.begin();
555 i != list.end(); ++i){
556 v3s16 p = pos + (*i);
557 content_t c = env->getMap().getNodeNoEx(p).getContent();
558 if(filter.count(c) != 0){
567 // find_nodes_in_area(minp, maxp, nodenames) -> list of positions
568 // nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
569 int ModApiEnvMod::l_find_nodes_in_area(lua_State *L)
573 INodeDefManager *ndef = getServer(L)->ndef();
574 v3s16 minp = read_v3s16(L, 1);
575 v3s16 maxp = read_v3s16(L, 2);
576 std::set<content_t> filter;
577 if(lua_istable(L, 3)) {
580 while(lua_next(L, table) != 0) {
581 // key at index -2 and value at index -1
582 luaL_checktype(L, -1, LUA_TSTRING);
583 ndef->getIds(lua_tostring(L, -1), filter);
584 // removes value, keeps key for next iteration
587 } else if(lua_isstring(L, 3)) {
588 ndef->getIds(lua_tostring(L, 3), filter);
591 std::map<content_t, u16> individual_count;
595 for (s16 x = minp.X; x <= maxp.X; x++)
596 for (s16 y = minp.Y; y <= maxp.Y; y++)
597 for (s16 z = minp.Z; z <= maxp.Z; z++) {
599 content_t c = env->getMap().getNodeNoEx(p).getContent();
600 if (filter.count(c) != 0) {
602 lua_rawseti(L, -2, ++i);
603 individual_count[c]++;
607 for (std::set<content_t>::iterator it = filter.begin();
608 it != filter.end(); ++it) {
609 lua_pushnumber(L, individual_count[*it]);
610 lua_setfield(L, -2, ndef->get(*it).name.c_str());
615 // find_nodes_in_area_under_air(minp, maxp, nodenames) -> list of positions
616 // nodenames: e.g. {"ignore", "group:tree"} or "default:dirt"
617 int ModApiEnvMod::l_find_nodes_in_area_under_air(lua_State *L)
619 /* Note: A similar but generalized (and therefore slower) version of this
620 * function could be created -- e.g. find_nodes_in_area_under -- which
621 * would accept a node name (or ID?) or list of names that the "above node"
628 INodeDefManager *ndef = getServer(L)->ndef();
629 v3s16 minp = read_v3s16(L, 1);
630 v3s16 maxp = read_v3s16(L, 2);
631 std::set<content_t> filter;
633 if (lua_istable(L, 3)) {
636 while(lua_next(L, table) != 0) {
637 // key at index -2 and value at index -1
638 luaL_checktype(L, -1, LUA_TSTRING);
639 ndef->getIds(lua_tostring(L, -1), filter);
640 // removes value, keeps key for next iteration
643 } else if (lua_isstring(L, 3)) {
644 ndef->getIds(lua_tostring(L, 3), filter);
649 for (s16 x = minp.X; x <= maxp.X; x++)
650 for (s16 z = minp.Z; z <= maxp.Z; z++) {
653 content_t c = env->getMap().getNodeNoEx(p).getContent();
654 for (; y <= maxp.Y; y++) {
655 v3s16 psurf(x, y + 1, z);
656 content_t csurf = env->getMap().getNodeNoEx(psurf).getContent();
657 if(c != CONTENT_AIR && csurf == CONTENT_AIR &&
658 filter.count(c) != 0) {
659 push_v3s16(L, v3s16(x, y, z));
660 lua_rawseti(L, -2, ++i);
668 // get_perlin(seeddiff, octaves, persistence, scale)
669 // returns world-specific PerlinNoise
670 int ModApiEnvMod::l_get_perlin(lua_State *L)
672 GET_ENV_PTR_NO_MAP_LOCK;
676 if (lua_istable(L, 1)) {
677 read_noiseparams(L, 1, ¶ms);
679 params.seed = luaL_checkint(L, 1);
680 params.octaves = luaL_checkint(L, 2);
681 params.persist = luaL_checknumber(L, 3);
682 params.spread = v3f(1, 1, 1) * luaL_checknumber(L, 4);
685 params.seed += (int)env->getServerMap().getSeed();
687 LuaPerlinNoise *n = new LuaPerlinNoise(¶ms);
688 *(void **)(lua_newuserdata(L, sizeof(void *))) = n;
689 luaL_getmetatable(L, "PerlinNoise");
690 lua_setmetatable(L, -2);
694 // get_perlin_map(noiseparams, size)
695 // returns world-specific PerlinNoiseMap
696 int ModApiEnvMod::l_get_perlin_map(lua_State *L)
698 GET_ENV_PTR_NO_MAP_LOCK;
701 if (!read_noiseparams(L, 1, &np))
703 v3s16 size = read_v3s16(L, 2);
705 int seed = (int)(env->getServerMap().getSeed());
706 LuaPerlinNoiseMap *n = new LuaPerlinNoiseMap(&np, seed, size);
707 *(void **)(lua_newuserdata(L, sizeof(void *))) = n;
708 luaL_getmetatable(L, "PerlinNoiseMap");
709 lua_setmetatable(L, -2);
714 // returns voxel manipulator
715 int ModApiEnvMod::l_get_voxel_manip(lua_State *L)
719 Map *map = &(env->getMap());
720 LuaVoxelManip *o = (lua_istable(L, 1) && lua_istable(L, 2)) ?
721 new LuaVoxelManip(map, read_v3s16(L, 1), read_v3s16(L, 2)) :
722 new LuaVoxelManip(map);
724 *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
725 luaL_getmetatable(L, "VoxelManip");
726 lua_setmetatable(L, -2);
731 // clear all objects in the environment
732 int ModApiEnvMod::l_clear_objects(lua_State *L)
736 env->clearAllObjects();
740 // line_of_sight(pos1, pos2, stepsize) -> true/false, pos
741 int ModApiEnvMod::l_line_of_sight(lua_State *L)
743 float stepsize = 1.0;
747 // read position 1 from lua
748 v3f pos1 = checkFloatPos(L, 1);
749 // read position 2 from lua
750 v3f pos2 = checkFloatPos(L, 2);
751 //read step size from lua
752 if (lua_isnumber(L, 3)) {
753 stepsize = lua_tonumber(L, 3);
757 bool success = env->line_of_sight(pos1, pos2, stepsize, &p);
758 lua_pushboolean(L, success);
766 // emerge_area(p1, p2, [callback, context])
767 // emerge mapblocks in area p1..p2, calls callback with context upon completion
768 int ModApiEnvMod::l_emerge_area(lua_State *L)
772 EmergeCompletionCallback callback = NULL;
773 ScriptCallbackState *state = NULL;
775 EmergeManager *emerge = getServer(L)->getEmergeManager();
777 v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
778 v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
779 sortBoxVerticies(bpmin, bpmax);
781 size_t num_blocks = VoxelArea(bpmin, bpmax).getVolume();
782 assert(num_blocks != 0);
784 if (lua_isfunction(L, 3)) {
785 callback = LuaEmergeAreaCallback;
788 int callback_ref = luaL_ref(L, LUA_REGISTRYINDEX);
791 int args_ref = luaL_ref(L, LUA_REGISTRYINDEX);
793 state = new ScriptCallbackState;
794 state->script = getServer(L)->getScriptIface();
795 state->callback_ref = callback_ref;
796 state->args_ref = args_ref;
797 state->refcount = num_blocks;
798 state->origin = getScriptApiBase(L)->getOrigin();
801 for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
802 for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
803 for (s16 x = bpmin.X; x <= bpmax.X; x++) {
804 emerge->enqueueBlockEmergeEx(v3s16(x, y, z), PEER_ID_INEXISTENT,
805 BLOCK_EMERGE_ALLOW_GEN | BLOCK_EMERGE_FORCE_QUEUE, callback, state);
811 // delete_area(p1, p2)
812 // delete mapblocks in area p1..p2
813 int ModApiEnvMod::l_delete_area(lua_State *L)
817 v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
818 v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
819 sortBoxVerticies(bpmin, bpmax);
821 ServerMap &map = env->getServerMap();
824 event.type = MEET_OTHER;
827 for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
828 for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
829 for (s16 x = bpmin.X; x <= bpmax.X; x++) {
831 if (map.deleteBlock(bp)) {
832 env->setStaticForActiveObjectsInBlock(bp, false);
833 event.modified_blocks.insert(bp);
839 map.dispatchEvent(&event);
840 lua_pushboolean(L, success);
844 // find_path(pos1, pos2, searchdistance,
845 // max_jump, max_drop, algorithm) -> table containing path
846 int ModApiEnvMod::l_find_path(lua_State *L)
850 v3s16 pos1 = read_v3s16(L, 1);
851 v3s16 pos2 = read_v3s16(L, 2);
852 unsigned int searchdistance = luaL_checkint(L, 3);
853 unsigned int max_jump = luaL_checkint(L, 4);
854 unsigned int max_drop = luaL_checkint(L, 5);
855 algorithm algo = A_PLAIN_NP;
856 if (!lua_isnil(L, 6)) {
857 std::string algorithm = luaL_checkstring(L,6);
859 if (algorithm == "A*")
862 if (algorithm == "Dijkstra")
866 std::vector<v3s16> path =
867 get_Path(env,pos1,pos2,searchdistance,max_jump,max_drop,algo);
872 int top = lua_gettop(L);
873 unsigned int index = 1;
874 for (std::vector<v3s16>::iterator i = path.begin(); i != path.end();i++)
876 lua_pushnumber(L,index);
878 lua_settable(L, top);
887 // spawn_tree(pos, treedef)
888 int ModApiEnvMod::l_spawn_tree(lua_State *L)
892 v3s16 p0 = read_v3s16(L, 1);
894 treegen::TreeDef tree_def;
895 std::string trunk,leaves,fruit;
896 INodeDefManager *ndef = env->getGameDef()->ndef();
898 if(lua_istable(L, 2))
900 getstringfield(L, 2, "axiom", tree_def.initial_axiom);
901 getstringfield(L, 2, "rules_a", tree_def.rules_a);
902 getstringfield(L, 2, "rules_b", tree_def.rules_b);
903 getstringfield(L, 2, "rules_c", tree_def.rules_c);
904 getstringfield(L, 2, "rules_d", tree_def.rules_d);
905 getstringfield(L, 2, "trunk", trunk);
906 tree_def.trunknode=ndef->getId(trunk);
907 getstringfield(L, 2, "leaves", leaves);
908 tree_def.leavesnode=ndef->getId(leaves);
909 tree_def.leaves2_chance=0;
910 getstringfield(L, 2, "leaves2", leaves);
913 tree_def.leaves2node=ndef->getId(leaves);
914 getintfield(L, 2, "leaves2_chance", tree_def.leaves2_chance);
916 getintfield(L, 2, "angle", tree_def.angle);
917 getintfield(L, 2, "iterations", tree_def.iterations);
918 if (!getintfield(L, 2, "random_level", tree_def.iterations_random_level))
919 tree_def.iterations_random_level = 0;
920 getstringfield(L, 2, "trunk_type", tree_def.trunk_type);
921 getboolfield(L, 2, "thin_branches", tree_def.thin_branches);
922 tree_def.fruit_chance=0;
923 getstringfield(L, 2, "fruit", fruit);
926 tree_def.fruitnode=ndef->getId(fruit);
927 getintfield(L, 2, "fruit_chance",tree_def.fruit_chance);
929 tree_def.explicit_seed = getintfield(L, 2, "seed", tree_def.seed);
935 if ((e = treegen::spawn_ltree (env, p0, ndef, tree_def)) != treegen::SUCCESS) {
936 if (e == treegen::UNBALANCED_BRACKETS) {
937 luaL_error(L, "spawn_tree(): closing ']' has no matching opening bracket");
939 luaL_error(L, "spawn_tree(): unknown error");
946 // transforming_liquid_add(pos)
947 int ModApiEnvMod::l_transforming_liquid_add(lua_State *L)
951 v3s16 p0 = read_v3s16(L, 1);
952 env->getMap().transforming_liquid_add(p0);
956 // forceload_block(blockpos)
957 // blockpos = {x=num, y=num, z=num}
958 int ModApiEnvMod::l_forceload_block(lua_State *L)
962 v3s16 blockpos = read_v3s16(L, 1);
963 env->getForceloadedBlocks()->insert(blockpos);
967 // forceload_free_block(blockpos)
968 // blockpos = {x=num, y=num, z=num}
969 int ModApiEnvMod::l_forceload_free_block(lua_State *L)
973 v3s16 blockpos = read_v3s16(L, 1);
974 env->getForceloadedBlocks()->erase(blockpos);
978 void ModApiEnvMod::Initialize(lua_State *L, int top)
984 API_FCT(remove_node);
986 API_FCT(get_node_or_nil);
987 API_FCT(get_node_light);
991 API_FCT(get_node_max_level);
992 API_FCT(get_node_level);
993 API_FCT(set_node_level);
994 API_FCT(add_node_level);
996 API_FCT(find_nodes_with_meta);
998 API_FCT(get_node_timer);
999 API_FCT(get_player_by_name);
1000 API_FCT(get_objects_inside_radius);
1001 API_FCT(set_timeofday);
1002 API_FCT(get_timeofday);
1003 API_FCT(get_gametime);
1004 API_FCT(find_node_near);
1005 API_FCT(find_nodes_in_area);
1006 API_FCT(find_nodes_in_area_under_air);
1007 API_FCT(emerge_area);
1008 API_FCT(delete_area);
1009 API_FCT(get_perlin);
1010 API_FCT(get_perlin_map);
1011 API_FCT(get_voxel_manip);
1012 API_FCT(clear_objects);
1013 API_FCT(spawn_tree);
1015 API_FCT(line_of_sight);
1016 API_FCT(transforming_liquid_add);
1017 API_FCT(forceload_block);
1018 API_FCT(forceload_free_block);