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* Translated using Weblate (Ukrainian)Maksim Gamarnik2020-07-08
| | | | Currently translated at 42.6% (576 of 1350 strings)
* Translated using Weblate (Ukrainian)Andrii Muliar2020-07-08
| | | | Currently translated at 42.0% (568 of 1350 strings)
* Translated using Weblate (Ukrainian)Fixer2020-07-08
| | | | Currently translated at 42.0% (568 of 1350 strings)
* Translated using Weblate (Ukrainian)Maksim Gamarnik2020-07-08
| | | | Currently translated at 41.4% (560 of 1350 strings)
* Update translation filesupdatepo.sh2020-06-13
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* Translated using Weblate (Ukrainian)Rostyslav2020-06-13
| | | | Currently translated at 42.0% (541 of 1288 strings)
* Update translation filesupdatepo.sh2020-04-03
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* Translated using Weblate (Ukrainian)sfan52020-04-03
| | | | Currently translated at 41.3% (533 of 1288 strings)
* Update translation sourcesrubenwardy2020-01-24
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* Translated using Weblate (Ukrainian)Fixer2020-01-24
| | | | Currently translated at 42.1% (536 of 1274 strings)
* Update translation stringsupdatepo.sh2019-10-12
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* Update from Weblate (hacky)Translators2019-10-12
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* Update translation stringsupdatepo.sh2019-09-09
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* Update from WeblateTranslators2019-09-09
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* Fix build since translation updatesLoïc Blot2019-02-26
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* Update translationsTranslations2019-02-24
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* Update minetest.conf.example, settings strings and locale files (#8230)Wuzzy2019-02-14
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* Run updatepo.shTranslation2019-02-14
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* Update translationsTranslations2019-02-14
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* Cleanup translation filesLoïc Blot2019-01-28
| | | | These were broken on the previous commits
* Update translationsTranslations2019-01-27
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* Run updatepo.shTranslations2019-01-06
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* Update translations from WeblateTranslations2019-01-06
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* Update minetest.conf.example and run updatepo.sh (#7947)Update Script2018-12-09
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* Add translation of LANG_CODE in all languagesEkdohibs2017-08-24
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* Fix updatepo.sh and run it.Ekdohibs2017-08-24
| | | | It was broken due to the presence of "µ" utf-8 characters in builtin/profiler/reporter.lua.
* Translated using Weblate (Ukrainian)Fixer2017-06-03
| | | | Currently translated at 40.0% (410 of 1024 strings)
* Translated using Weblate (Ukrainian)Olexandr2017-06-03
| | | | Currently translated at 37.6% (386 of 1024 strings)
* Translated using Weblate (Ukrainian)Fixer2017-06-03
| | | | Currently translated at 37.6% (386 of 1024 strings)
* Run updatepo.shLoic Blot2017-05-21
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* Translated using Weblate (Ukrainian)Fixer2017-05-21
| | | | Currently translated at 38.1% (350 of 918 strings)
* Footsteps without view bobbing (#5645)Louis Pearson2017-04-25
| | | | | | | | | | | | * Remove redundant view_bobbing setting Also fixes bug where disabling view_bobbing disables footstep sounds. * Removes redundant view_bobbing setting Setting view_bobbing amount to 0 is now the only way to turn view_bobbing on and off. Also fixed a bug where footstep sounds would not play when view_bobbing was disabled.
* Run updatepo.shest312016-12-14
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* Translated using Weblate (Ukrainian)Fixer2016-12-14
| | | | Currently translated at 38.1% (350 of 918 strings)
* Run updatepo.shest312016-08-30
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* Run updatepo.shest312016-07-12
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* Translated using Weblate (Ukrainian)Fixer2016-05-30
| | | | Currently translated at 39.3% (349 of 887 strings)
* Translated using Weblate (Ukrainian)Fixer2016-05-10
| | | | | | Currently translated at 38.4% (341 of 887 strings) This is a merger of two commits.
* Run updatepo.shest312016-05-05
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* Update po files, minetest.conf.example and settings_translation_file.cppest312016-02-27
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* Translated using Weblate (Ukrainian)Fixer2016-02-27
| | | | Currently translated at 30.4% (240 of 787 strings)
* Run util/updatepo.shest312015-11-08
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* Run updatepo.shest312015-10-24
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* Translated using Weblate (Ukrainian)Olexandr2015-10-05
| | | | Currently translated at 81.6% (227 of 278 strings)
* Translated using Weblate (Ukrainian)Olexandr2015-10-05
| | | | Currently translated at 78.0% (217 of 278 strings)
* Translated using Weblate (Ukrainian)Olexandr2015-10-05
| | | | | | Currently translated at 66.5% (185 of 278 strings) Maybe it is better to describe allowed symbols instead of writing regex?
* Translated using Weblate (Ukrainian)Olexandr2015-10-05
| | | | Currently translated at 46.4% (129 of 278 strings)
* Run updatepo.shest312015-09-12
| | | | | | After this, it should hopefully not record line numbers anymore, so the diffs of updatepo.sh runs are smaller. Well, this is theory, lets see how it will turn out to be in practice.
* Run updatepo.shest312015-07-17
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* Revert "Update Russian translation"Kahrl2014-12-13
| | | | | | | | This reverts commit e4e4324a30d6bcac5cc06c74e955e4941b14bd38. Conflicts: po/minetest.pot po/*/minetest.po
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-02 07:57:12 +0000
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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include "lua_api/l_env.h"
#include "lua_api/l_internal.h"
#include "lua_api/l_nodemeta.h"
#include "lua_api/l_nodetimer.h"
#include "lua_api/l_noise.h"
#include "lua_api/l_vmanip.h"
#include "common/c_converter.h"
#include "common/c_content.h"
#include "scripting_server.h"
#include "environment.h"
#include "server.h"
#include "nodedef.h"
#include "daynightratio.h"
#include "util/pointedthing.h"
#include "content_sao.h"
#include "treegen.h"
#include "emerge.h"
#include "pathfinder.h"

struct EnumString ModApiEnvMod::es_ClearObjectsMode[] =
{
	{CLEAR_OBJECTS_MODE_FULL,  "full"},
	{CLEAR_OBJECTS_MODE_QUICK, "quick"},
	{0, NULL},
};

///////////////////////////////////////////////////////////////////////////////


void LuaABM::trigger(ServerEnvironment *env, v3s16 p, MapNode n,
		u32 active_object_count, u32 active_object_count_wider)
{
	ServerScripting *scriptIface = env->getScriptIface();
	scriptIface->realityCheck();

	lua_State *L = scriptIface->getStack();
	sanity_check(lua_checkstack(L, 20));
	StackUnroller stack_unroller(L);

	int error_handler = PUSH_ERROR_HANDLER(L);

	// Get registered_abms
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_abms");
	luaL_checktype(L, -1, LUA_TTABLE);
	lua_remove(L, -2); // Remove core

	// Get registered_abms[m_id]
	lua_pushnumber(L, m_id);
	lua_gettable(L, -2);
	if(lua_isnil(L, -1))
		FATAL_ERROR("");
	lua_remove(L, -2); // Remove registered_abms

	scriptIface->setOriginFromTable(-1);

	// Call action
	luaL_checktype(L, -1, LUA_TTABLE);
	lua_getfield(L, -1, "action");
	luaL_checktype(L, -1, LUA_TFUNCTION);
	lua_remove(L, -2); // Remove registered_abms[m_id]
	push_v3s16(L, p);
	pushnode(L, n, env->getGameDef()->ndef());
	lua_pushnumber(L, active_object_count);
	lua_pushnumber(L, active_object_count_wider);

	int result = lua_pcall(L, 4, 0, error_handler);
	if (result)
		scriptIface->scriptError(result, "LuaABM::trigger");

	lua_pop(L, 1); // Pop error handler
}

void LuaLBM::trigger(ServerEnvironment *env, v3s16 p, MapNode n)
{
	ServerScripting *scriptIface = env->getScriptIface();
	scriptIface->realityCheck();

	lua_State *L = scriptIface->getStack();
	sanity_check(lua_checkstack(L, 20));
	StackUnroller stack_unroller(L);

	int error_handler = PUSH_ERROR_HANDLER(L);

	// Get registered_lbms
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_lbms");
	luaL_checktype(L, -1, LUA_TTABLE);
	lua_remove(L, -2); // Remove core

	// Get registered_lbms[m_id]
	lua_pushnumber(L, m_id);
	lua_gettable(L, -2);
	FATAL_ERROR_IF(lua_isnil(L, -1), "Entry with given id not found in registered_lbms table");
	lua_remove(L, -2); // Remove registered_lbms

	scriptIface->setOriginFromTable(-1);

	// Call action
	luaL_checktype(L, -1, LUA_TTABLE);
	lua_getfield(L, -1, "action");
	luaL_checktype(L, -1, LUA_TFUNCTION);
	lua_remove(L, -2); // Remove registered_lbms[m_id]
	push_v3s16(L, p);
	pushnode(L, n, env->getGameDef()->ndef());

	int result = lua_pcall(L, 2, 0, error_handler);
	if (result)
		scriptIface->scriptError(result, "LuaLBM::trigger");

	lua_pop(L, 1); // Pop error handler
}

void LuaEmergeAreaCallback(v3s16 blockpos, EmergeAction action, void *param)
{
	ScriptCallbackState *state = (ScriptCallbackState *)param;
	assert(state != NULL);
	assert(state->script != NULL);
	assert(state->refcount > 0);

	// state must be protected by envlock
	Server *server = state->script->getServer();
	MutexAutoLock envlock(server->m_env_mutex);

	state->refcount--;

	state->script->on_emerge_area_completion(blockpos, action, state);

	if (state->refcount == 0)
		delete state;
}

// Exported functions

// set_node(pos, node)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_set_node(lua_State *L)
{
	GET_ENV_PTR;

	INodeDefManager *ndef = env->getGameDef()->ndef();
	// parameters
	v3s16 pos = read_v3s16(L, 1);
	MapNode n = readnode(L, 2, ndef);
	// Do it
	bool succeeded = env->setNode(pos, n);
	lua_pushboolean(L, succeeded);
	return 1;
}

int ModApiEnvMod::l_add_node(lua_State *L)
{
	return l_set_node(L);
}

// remove_node(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_remove_node(lua_State *L)
{
	GET_ENV_PTR;

	// parameters
	v3s16 pos = read_v3s16(L, 1);
	// Do it
	bool succeeded = env->removeNode(pos);
	lua_pushboolean(L, succeeded);
	return 1;
}

// swap_node(pos, node)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_swap_node(lua_State *L)
{
	GET_ENV_PTR;

	INodeDefManager *ndef = env->getGameDef()->ndef();
	// parameters
	v3s16 pos = read_v3s16(L, 1);
	MapNode n = readnode(L, 2, ndef);
	// Do it
	bool succeeded = env->swapNode(pos, n);
	lua_pushboolean(L, succeeded);
	return 1;
}

// get_node(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_get_node(lua_State *L)
{
	GET_ENV_PTR;

	// pos
	v3s16 pos = read_v3s16(L, 1);
	// Do it
	MapNode n = env->getMap().getNodeNoEx(pos);
	// Return node
	pushnode(L, n, env->getGameDef()->ndef());
	return 1;
}

// get_node_or_nil(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_get_node_or_nil(lua_State *L)
{
	GET_ENV_PTR;

	// pos
	v3s16 pos = read_v3s16(L, 1);
	// Do it
	bool pos_ok;
	MapNode n = env->getMap().getNodeNoEx(pos, &pos_ok);
	if (pos_ok) {
		// Return node
		pushnode(L, n, env->getGameDef()->ndef());
	} else {
		lua_pushnil(L);
	}
	return 1;
}

// get_node_light(pos, timeofday)
// pos = {x=num, y=num, z=num}
// timeofday: nil = current time, 0 = night, 0.5 = day
int ModApiEnvMod::l_get_node_light(lua_State *L)
{
	GET_ENV_PTR;

	// Do it
	v3s16 pos = read_v3s16(L, 1);
	u32 time_of_day = env->getTimeOfDay();
	if(lua_isnumber(L, 2))
		time_of_day = 24000.0 * lua_tonumber(L, 2);
	time_of_day %= 24000;
	u32 dnr = time_to_daynight_ratio(time_of_day, true);

	bool is_position_ok;
	MapNode n = env->getMap().getNodeNoEx(pos, &is_position_ok);
	if (is_position_ok) {
		INodeDefManager *ndef = env->getGameDef()->ndef();
		lua_pushinteger(L, n.getLightBlend(dnr, ndef));
	} else {
		lua_pushnil(L);
	}
	return 1;
}

// place_node(pos, node)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_place_node(lua_State *L)
{
	GET_ENV_PTR;

	ScriptApiItem *scriptIfaceItem = getScriptApi<ScriptApiItem>(L);
	Server *server = getServer(L);
	INodeDefManager *ndef = server->ndef();
	IItemDefManager *idef = server->idef();

	v3s16 pos = read_v3s16(L, 1);
	MapNode n = readnode(L, 2, ndef);

	// Don't attempt to load non-loaded area as of now
	MapNode n_old = env->getMap().getNodeNoEx(pos);
	if(n_old.getContent() == CONTENT_IGNORE){
		lua_pushboolean(L, false);
		return 1;
	}
	// Create item to place
	ItemStack item(ndef->get(n).name, 1, 0, idef);
	// Make pointed position
	PointedThing pointed;
	pointed.type = POINTEDTHING_NODE;
	pointed.node_abovesurface = pos;
	pointed.node_undersurface = pos + v3s16(0,-1,0);
	// Place it with a NULL placer (appears in Lua as a non-functional
	// ObjectRef)
	bool success = scriptIfaceItem->item_OnPlace(item, NULL, pointed);
	lua_pushboolean(L, success);
	return 1;
}

// dig_node(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_dig_node(lua_State *L)
{
	GET_ENV_PTR;

	ScriptApiNode *scriptIfaceNode = getScriptApi<ScriptApiNode>(L);

	v3s16 pos = read_v3s16(L, 1);

	// Don't attempt to load non-loaded area as of now
	MapNode n = env->getMap().getNodeNoEx(pos);
	if(n.getContent() == CONTENT_IGNORE){
		lua_pushboolean(L, false);
		return 1;
	}
	// Dig it out with a NULL digger (appears in Lua as a
	// non-functional ObjectRef)
	bool success = scriptIfaceNode->node_on_dig(pos, n, NULL);
	lua_pushboolean(L, success);
	return 1;
}

// punch_node(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_punch_node(lua_State *L)
{
	GET_ENV_PTR;

	ScriptApiNode *scriptIfaceNode = getScriptApi<ScriptApiNode>(L);

	v3s16 pos = read_v3s16(L, 1);

	// Don't attempt to load non-loaded area as of now
	MapNode n = env->getMap().getNodeNoEx(pos);
	if(n.getContent() == CONTENT_IGNORE){
		lua_pushboolean(L, false);
		return 1;
	}
	// Punch it with a NULL puncher (appears in Lua as a non-functional
	// ObjectRef)
	bool success = scriptIfaceNode->node_on_punch(pos, n, NULL, PointedThing());
	lua_pushboolean(L, success);
	return 1;
}

// get_node_max_level(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_get_node_max_level(lua_State *L)
{
	Environment *env = getEnv(L);
	if (!env) {
		return 0;
	}

	v3s16 pos = read_v3s16(L, 1);
	MapNode n = env->getMap().getNodeNoEx(pos);
	lua_pushnumber(L, n.getMaxLevel(env->getGameDef()->ndef()));
	return 1;
}

// get_node_level(pos)
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_get_node_level(lua_State *L)
{
	Environment *env = getEnv(L);
	if (!env) {
		return 0;
	}

	v3s16 pos = read_v3s16(L, 1);
	MapNode n = env->getMap().getNodeNoEx(pos);
	lua_pushnumber(L, n.getLevel(env->getGameDef()->ndef()));
	return 1;
}

// set_node_level(pos, level)
// pos = {x=num, y=num, z=num}
// level: 0..63
int ModApiEnvMod::l_set_node_level(lua_State *L)
{
	GET_ENV_PTR;

	v3s16 pos = read_v3s16(L, 1);
	u8 level = 1;
	if(lua_isnumber(L, 2))
		level = lua_tonumber(L, 2);
	MapNode n = env->getMap().getNodeNoEx(pos);
	lua_pushnumber(L, n.setLevel(env->getGameDef()->ndef(), level));
	env->setNode(pos, n);
	return 1;
}

// add_node_level(pos, level)
// pos = {x=num, y=num, z=num}
// level: 0..63
int ModApiEnvMod::l_add_node_level(lua_State *L)
{
	GET_ENV_PTR;

	v3s16 pos = read_v3s16(L, 1);
	u8 level = 1;
	if(lua_isnumber(L, 2))
		level = lua_tonumber(L, 2);
	MapNode n = env->getMap().getNodeNoEx(pos);
	lua_pushnumber(L, n.addLevel(env->getGameDef()->ndef(), level));
	env->setNode(pos, n);
	return 1;
}

// find_nodes_with_meta(pos1, pos2)
int ModApiEnvMod::l_find_nodes_with_meta(lua_State *L)
{
	GET_ENV_PTR;

	std::vector<v3s16> positions = env->getMap().findNodesWithMetadata(
		check_v3s16(L, 1), check_v3s16(L, 2));

	lua_newtable(L);
	for (size_t i = 0; i != positions.size(); i++) {
		push_v3s16(L, positions[i]);
		lua_rawseti(L, -2, i + 1);
	}

	return 1;
}

// get_meta(pos)
int ModApiEnvMod::l_get_meta(lua_State *L)
{
	GET_ENV_PTR;

	// Do it
	v3s16 p = read_v3s16(L, 1);
	NodeMetaRef::create(L, p, env);
	return 1;
}

// get_node_timer(pos)
int ModApiEnvMod::l_get_node_timer(lua_State *L)
{
	GET_ENV_PTR;

	// Do it
	v3s16 p = read_v3s16(L, 1);
	NodeTimerRef::create(L, p, env);
	return 1;
}

// add_entity(pos, entityname, [staticdata]) -> ObjectRef or nil
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_add_entity(lua_State *L)
{
	GET_ENV_PTR;

	// pos
	v3f pos = checkFloatPos(L, 1);
	// content
	const char *name = luaL_checkstring(L, 2);
	// staticdata
	const char *staticdata = luaL_optstring(L, 3, "");
	// Do it
	ServerActiveObject *obj = new LuaEntitySAO(env, pos, name, staticdata);
	int objectid = env->addActiveObject(obj);
	// If failed to add, return nothing (reads as nil)
	if(objectid == 0)
		return 0;
	// Return ObjectRef
	getScriptApiBase(L)->objectrefGetOrCreate(L, obj);
	return 1;
}

// add_item(pos, itemstack or itemstring or table) -> ObjectRef or nil
// pos = {x=num, y=num, z=num}
int ModApiEnvMod::l_add_item(lua_State *L)
{
	GET_ENV_PTR;

	// pos
	//v3f pos = checkFloatPos(L, 1);
	// item
	ItemStack item = read_item(L, 2,getServer(L)->idef());
	if(item.empty() || !item.isKnown(getServer(L)->idef()))
		return 0;

	int error_handler = PUSH_ERROR_HANDLER(L);

	// Use spawn_item to spawn a __builtin:item
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "spawn_item");
	lua_remove(L, -2); // Remove core
	if(lua_isnil(L, -1))
		return 0;
	lua_pushvalue(L, 1);
	lua_pushstring(L, item.getItemString().c_str());

	PCALL_RESL(L, lua_pcall(L, 2, 1, error_handler));

	lua_remove(L, error_handler);
	return 1;
}

// get_player_by_name(name)
int ModApiEnvMod::l_get_player_by_name(lua_State *L)
{
	GET_ENV_PTR;

	// Do it
	const char *name = luaL_checkstring(L, 1);
	RemotePlayer *player = dynamic_cast<RemotePlayer *>(env->getPlayer(name));
	if (player == NULL){
		lua_pushnil(L);
		return 1;
	}
	PlayerSAO *sao = player->getPlayerSAO();
	if(sao == NULL){
		lua_pushnil(L);
		return 1;
	}
	// Put player on stack
	getScriptApiBase(L)->objectrefGetOrCreate(L, sao);
	return 1;
}

// get_objects_inside_radius(pos, radius)
int ModApiEnvMod::l_get_objects_inside_radius(lua_State *L)
{
	GET_ENV_PTR;

	// Do it
	v3f pos = checkFloatPos(L, 1);
	float radius = luaL_checknumber(L, 2) * BS;
	std::vector<u16> ids;
	env->getObjectsInsideRadius(ids, pos, radius);
	ScriptApiBase *script = getScriptApiBase(L);
	lua_createtable(L, ids.size(), 0);
	std::vector<u16>::const_iterator iter = ids.begin();
	for(u32 i = 0; iter != ids.end(); ++iter) {
		ServerActiveObject *obj = env->getActiveObject(*iter);
		// Insert object reference into table
		script->objectrefGetOrCreate(L, obj);
		lua_rawseti(L, -2, ++i);
	}
	return 1;
}

// set_timeofday(val)
// val = 0...1
int ModApiEnvMod::l_set_timeofday(lua_State *L)
{
	GET_ENV_PTR;

	// Do it
	float timeofday_f = luaL_checknumber(L, 1);
	sanity_check(timeofday_f >= 0.0 && timeofday_f <= 1.0);
	int timeofday_mh = (int)(timeofday_f * 24000.0);
	// This should be set directly in the environment but currently
	// such changes aren't immediately sent to the clients, so call
	// the server instead.
	//env->setTimeOfDay(timeofday_mh);
	getServer(L)->setTimeOfDay(timeofday_mh);
	return 0;
}

// get_timeofday() -> 0...1
int ModApiEnvMod::l_get_timeofday(lua_State *L)
{
	Environment *env = getEnv(L);
	if (!env) {
		return 0;
	}

	// Do it
	int timeofday_mh = env->getTimeOfDay();
	float timeofday_f = (float)timeofday_mh / 24000.0f;
	lua_pushnumber(L, timeofday_f);
	return 1;
}

// get_day_count() -> int
int ModApiEnvMod::l_get_day_count(lua_State *L)
{
	Environment *env = getEnv(L);
	if (!env) {
		return 0;
	}

	lua_pushnumber(L, env->getDayCount());
	return 1;
}

// get_gametime()
int ModApiEnvMod::l_get_gametime(lua_State *L)
{
	GET_ENV_PTR;

	int game_time = env->getGameTime();
	lua_pushnumber(L, game_time);
	return 1;
}


// find_node_near(pos, radius, nodenames, search_center) -> pos or nil
// nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
int ModApiEnvMod::l_find_node_near(lua_State *L)
{
	Environment *env = getEnv(L);
	if (!env) {
		return 0;
	}

	INodeDefManager *ndef = getGameDef(L)->ndef();
	v3s16 pos = read_v3s16(L, 1);
	int radius = luaL_checkinteger(L, 2);
	std::set<content_t> filter;
	if (lua_istable(L, 3)) {
		lua_pushnil(L);
		while (lua_next(L, 3) != 0) {
			// key at index -2 and value at index -1
			luaL_checktype(L, -1, LUA_TSTRING);
			ndef->getIds(lua_tostring(L, -1), filter);
			// removes value, keeps key for next iteration
			lua_pop(L, 1);
		}
	} else if (lua_isstring(L, 3)) {
		ndef->getIds(lua_tostring(L, 3), filter);
	}

	int start_radius = (lua_toboolean(L, 4)) ? 0 : 1;
	for (int d = start_radius; d <= radius; d++) {
		std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
		for (std::vector<v3s16>::iterator i = list.begin();
				i != list.end(); ++i) {
			v3s16 p = pos + (*i);
			content_t c = env->getMap().getNodeNoEx(p).getContent();
			if (filter.count(c) != 0) {
				push_v3s16(L, p);
				return 1;
			}
		}
	}
	return 0;
}

// find_nodes_in_area(minp, maxp, nodenames) -> list of positions
// nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
int ModApiEnvMod::l_find_nodes_in_area(lua_State *L)
{
	GET_ENV_PTR;

	INodeDefManager *ndef = getServer(L)->ndef();
	v3s16 minp = read_v3s16(L, 1);
	v3s16 maxp = read_v3s16(L, 2);
	std::set<content_t> filter;
	if(lua_istable(L, 3)) {
		int table = 3;
		lua_pushnil(L);
		while(lua_next(L, table) != 0) {
			// key at index -2 and value at index -1
			luaL_checktype(L, -1, LUA_TSTRING);
			ndef->getIds(lua_tostring(L, -1), filter);
			// removes value, keeps key for next iteration
			lua_pop(L, 1);
		}
	} else if(lua_isstring(L, 3)) {
		ndef->getIds(lua_tostring(L, 3), filter);
	}

	std::map<content_t, u16> individual_count;

	lua_newtable(L);
	u64 i = 0;
	for (s16 x = minp.X; x <= maxp.X; x++)
		for (s16 y = minp.Y; y <= maxp.Y; y++)
			for (s16 z = minp.Z; z <= maxp.Z; z++) {
				v3s16 p(x, y, z);
				content_t c = env->getMap().getNodeNoEx(p).getContent();
				if (filter.count(c) != 0) {
					push_v3s16(L, p);
					lua_rawseti(L, -2, ++i);
					individual_count[c]++;
				}
	}
	lua_newtable(L);
	for (std::set<content_t>::iterator it = filter.begin();
			it != filter.end(); ++it) {
		lua_pushnumber(L, individual_count[*it]);
		lua_setfield(L, -2, ndef->get(*it).name.c_str());
	}
	return 2;
}

// find_nodes_in_area_under_air(minp, maxp, nodenames) -> list of positions
// nodenames: e.g. {"ignore", "group:tree"} or "default:dirt"
int ModApiEnvMod::l_find_nodes_in_area_under_air(lua_State *L)
{
	/* Note: A similar but generalized (and therefore slower) version of this
	 * function could be created -- e.g. find_nodes_in_area_under -- which
	 * would accept a node name (or ID?) or list of names that the "above node"
	 * should be.
	 * TODO
	 */

	GET_ENV_PTR;

	INodeDefManager *ndef = getServer(L)->ndef();
	v3s16 minp = read_v3s16(L, 1);
	v3s16 maxp = read_v3s16(L, 2);
	std::set<content_t> filter;

	if (lua_istable(L, 3)) {
		int table = 3;
		lua_pushnil(L);
		while(lua_next(L, table) != 0) {
			// key at index -2 and value at index -1
			luaL_checktype(L, -1, LUA_TSTRING);
			ndef->getIds(lua_tostring(L, -1), filter);
			// removes value, keeps key for next iteration
			lua_pop(L, 1);
		}
	} else if (lua_isstring(L, 3)) {
		ndef->getIds(lua_tostring(L, 3), filter);
	}

	lua_newtable(L);
	u64 i = 0;
	for (s16 x = minp.X; x <= maxp.X; x++)
	for (s16 z = minp.Z; z <= maxp.Z; z++) {
		s16 y = minp.Y;
		v3s16 p(x, y, z);
		content_t c = env->getMap().getNodeNoEx(p).getContent();
		for (; y <= maxp.Y; y++) {
			v3s16 psurf(x, y + 1, z);
			content_t csurf = env->getMap().getNodeNoEx(psurf).getContent();
			if(c != CONTENT_AIR && csurf == CONTENT_AIR &&
					filter.count(c) != 0) {
				push_v3s16(L, v3s16(x, y, z));
				lua_rawseti(L, -2, ++i);
			}
			c = csurf;
		}
	}
	return 1;
}

// get_perlin(seeddiff, octaves, persistence, scale)
// returns world-specific PerlinNoise
int ModApiEnvMod::l_get_perlin(lua_State *L)
{
	GET_ENV_PTR_NO_MAP_LOCK;

	NoiseParams params;

	if (lua_istable(L, 1)) {
		read_noiseparams(L, 1, &params);
	} else {
		params.seed    = luaL_checkint(L, 1);
		params.octaves = luaL_checkint(L, 2);
		params.persist = luaL_checknumber(L, 3);
		params.spread  = v3f(1, 1, 1) * luaL_checknumber(L, 4);
	}

	params.seed += (int)env->getServerMap().getSeed();

	LuaPerlinNoise *n = new LuaPerlinNoise(&params);
	*(void **)(lua_newuserdata(L, sizeof(void *))) = n;
	luaL_getmetatable(L, "PerlinNoise");
	lua_setmetatable(L, -2);
	return 1;
}

// get_perlin_map(noiseparams, size)
// returns world-specific PerlinNoiseMap
int ModApiEnvMod::l_get_perlin_map(lua_State *L)
{
	GET_ENV_PTR_NO_MAP_LOCK;

	NoiseParams np;
	if (!read_noiseparams(L, 1, &np))
		return 0;
	v3s16 size = read_v3s16(L, 2);

	s32 seed = (s32)(env->getServerMap().getSeed());
	LuaPerlinNoiseMap *n = new LuaPerlinNoiseMap(&np, seed, size);
	*(void **)(lua_newuserdata(L, sizeof(void *))) = n;
	luaL_getmetatable(L, "PerlinNoiseMap");
	lua_setmetatable(L, -2);
	return 1;
}

// get_voxel_manip()
// returns voxel manipulator
int ModApiEnvMod::l_get_voxel_manip(lua_State *L)
{
	GET_ENV_PTR;

	Map *map = &(env->getMap());
	LuaVoxelManip *o = (lua_istable(L, 1) && lua_istable(L, 2)) ?
		new LuaVoxelManip(map, read_v3s16(L, 1), read_v3s16(L, 2)) :
		new LuaVoxelManip(map);

	*(void **)(lua_newuserdata(L, sizeof(void *))) = o;
	luaL_getmetatable(L, "VoxelManip");
	lua_setmetatable(L, -2);
	return 1;
}

// clear_objects([options])
// clear all objects in the environment
// where options = {mode = "full" or "quick"}
int ModApiEnvMod::l_clear_objects(lua_State *L)
{
	GET_ENV_PTR;

	ClearObjectsMode mode = CLEAR_OBJECTS_MODE_FULL;
	if (lua_istable(L, 1)) {
		mode = (ClearObjectsMode)getenumfield(L, 1, "mode",
			ModApiEnvMod::es_ClearObjectsMode, mode);
	}

	env->clearObjects(mode);
	return 0;
}

// line_of_sight(pos1, pos2, stepsize) -> true/false, pos
int ModApiEnvMod::l_line_of_sight(lua_State *L)
{
	float stepsize = 1.0;

	GET_ENV_PTR;

	// read position 1 from lua
	v3f pos1 = checkFloatPos(L, 1);
	// read position 2 from lua
	v3f pos2 = checkFloatPos(L, 2);
	//read step size from lua
	if (lua_isnumber(L, 3)) {
		stepsize = lua_tonumber(L, 3);
	}

	v3s16 p;
	bool success = env->line_of_sight(pos1, pos2, stepsize, &p);
	lua_pushboolean(L, success);
	if (!success) {
		push_v3s16(L, p);
		return 2;
	}
	return 1;
}

// fix_light(p1, p2)
int ModApiEnvMod::l_fix_light(lua_State *L)
{
	GET_ENV_PTR;

	v3s16 blockpos1 = getContainerPos(read_v3s16(L, 1), MAP_BLOCKSIZE);
	v3s16 blockpos2 = getContainerPos(read_v3s16(L, 2), MAP_BLOCKSIZE);
	ServerMap &map = env->getServerMap();
	std::map<v3s16, MapBlock *> modified_blocks;
	bool success = true;
	v3s16 blockpos;
	for (blockpos.X = blockpos1.X; blockpos.X <= blockpos2.X; blockpos.X++)
	for (blockpos.Y = blockpos1.Y; blockpos.Y <= blockpos2.Y; blockpos.Y++)
	for (blockpos.Z = blockpos1.Z; blockpos.Z <= blockpos2.Z; blockpos.Z++) {
		success = success & map.repairBlockLight(blockpos, &modified_blocks);
	}
	if (modified_blocks.size() > 0) {
		MapEditEvent event;
		event.type = MEET_OTHER;
		for (std::map<v3s16, MapBlock *>::iterator it = modified_blocks.begin();
				it != modified_blocks.end(); ++it)
			event.modified_blocks.insert(it->first);

		map.dispatchEvent(&event);
	}
	lua_pushboolean(L, success);

	return 1;
}

// emerge_area(p1, p2, [callback, context])
// emerge mapblocks in area p1..p2, calls callback with context upon completion
int ModApiEnvMod::l_emerge_area(lua_State *L)
{
	GET_ENV_PTR;

	EmergeCompletionCallback callback = NULL;
	ScriptCallbackState *state = NULL;

	EmergeManager *emerge = getServer(L)->getEmergeManager();

	v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
	v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
	sortBoxVerticies(bpmin, bpmax);

	size_t num_blocks = VoxelArea(bpmin, bpmax).getVolume();
	assert(num_blocks != 0);

	if (lua_isfunction(L, 3)) {
		callback = LuaEmergeAreaCallback;

		lua_pushvalue(L, 3);
		int callback_ref = luaL_ref(L, LUA_REGISTRYINDEX);

		lua_pushvalue(L, 4);
		int args_ref = luaL_ref(L, LUA_REGISTRYINDEX);

		state = new ScriptCallbackState;
		state->script       = getServer(L)->getScriptIface();
		state->callback_ref = callback_ref;
		state->args_ref     = args_ref;
		state->refcount     = num_blocks;
		state->origin       = getScriptApiBase(L)->getOrigin();
	}

	for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
	for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
	for (s16 x = bpmin.X; x <= bpmax.X; x++) {
		emerge->enqueueBlockEmergeEx(v3s16(x, y, z), PEER_ID_INEXISTENT,
			BLOCK_EMERGE_ALLOW_GEN | BLOCK_EMERGE_FORCE_QUEUE, callback, state);
	}

	return 0;
}

// delete_area(p1, p2)
// delete mapblocks in area p1..p2
int ModApiEnvMod::l_delete_area(lua_State *L)
{
	GET_ENV_PTR;

	v3s16 bpmin = getNodeBlockPos(read_v3s16(L, 1));
	v3s16 bpmax = getNodeBlockPos(read_v3s16(L, 2));
	sortBoxVerticies(bpmin, bpmax);

	ServerMap &map = env->getServerMap();

	MapEditEvent event;
	event.type = MEET_OTHER;

	bool success = true;
	for (s16 z = bpmin.Z; z <= bpmax.Z; z++)
	for (s16 y = bpmin.Y; y <= bpmax.Y; y++)
	for (s16 x = bpmin.X; x <= bpmax.X; x++) {
		v3s16 bp(x, y, z);
		if (map.deleteBlock(bp)) {
			env->setStaticForActiveObjectsInBlock(bp, false);
			event.modified_blocks.insert(bp);
		} else {
			success = false;
		}
	}

	map.dispatchEvent(&event);
	lua_pushboolean(L, success);
	return 1;
}

// find_path(pos1, pos2, searchdistance,
//     max_jump, max_drop, algorithm) -> table containing path
int ModApiEnvMod::l_find_path(lua_State *L)
{
	GET_ENV_PTR;

	v3s16 pos1                  = read_v3s16(L, 1);
	v3s16 pos2                  = read_v3s16(L, 2);
	unsigned int searchdistance = luaL_checkint(L, 3);
	unsigned int max_jump       = luaL_checkint(L, 4);
	unsigned int max_drop       = luaL_checkint(L, 5);
	PathAlgorithm algo          = PA_PLAIN_NP;
	if (!lua_isnil(L, 6)) {
		std::string algorithm = luaL_checkstring(L,6);

		if (algorithm == "A*")
			algo = PA_PLAIN;

		if (algorithm == "Dijkstra")
			algo = PA_DIJKSTRA;
	}

	std::vector<v3s16> path = get_path(env, pos1, pos2,
		searchdistance, max_jump, max_drop, algo);

	if (path.size() > 0)
	{
		lua_newtable(L);
		int top = lua_gettop(L);
		unsigned int index = 1;
		for (std::vector<v3s16>::iterator i = path.begin(); i != path.end(); ++i) {
			lua_pushnumber(L,index);
			push_v3s16(L, *i);
			lua_settable(L, top);
			index++;
		}
		return 1;
	}

	return 0;
}

// spawn_tree(pos, treedef)
int ModApiEnvMod::l_spawn_tree(lua_State *L)
{
	GET_ENV_PTR;

	v3s16 p0 = read_v3s16(L, 1);

	treegen::TreeDef tree_def;
	std::string trunk,leaves,fruit;
	INodeDefManager *ndef = env->getGameDef()->ndef();

	if(lua_istable(L, 2))
	{
		getstringfield(L, 2, "axiom", tree_def.initial_axiom);
		getstringfield(L, 2, "rules_a", tree_def.rules_a);
		getstringfield(L, 2, "rules_b", tree_def.rules_b);
		getstringfield(L, 2, "rules_c", tree_def.rules_c);
		getstringfield(L, 2, "rules_d", tree_def.rules_d);
		getstringfield(L, 2, "trunk", trunk);
		tree_def.trunknode=ndef->getId(trunk);
		getstringfield(L, 2, "leaves", leaves);
		tree_def.leavesnode=ndef->getId(leaves);
		tree_def.leaves2_chance=0;
		getstringfield(L, 2, "leaves2", leaves);
		if (leaves !="")
		{
			tree_def.leaves2node=ndef->getId(leaves);
			getintfield(L, 2, "leaves2_chance", tree_def.leaves2_chance);
		}
		getintfield(L, 2, "angle", tree_def.angle);
		getintfield(L, 2, "iterations", tree_def.iterations);
		if (!getintfield(L, 2, "random_level", tree_def.iterations_random_level))
			tree_def.iterations_random_level = 0;
		getstringfield(L, 2, "trunk_type", tree_def.trunk_type);
		getboolfield(L, 2, "thin_branches", tree_def.thin_branches);
		tree_def.fruit_chance=0;
		getstringfield(L, 2, "fruit", fruit);
		if (fruit != "")
		{
			tree_def.fruitnode=ndef->getId(fruit);
			getintfield(L, 2, "fruit_chance",tree_def.fruit_chance);
		}
		tree_def.explicit_seed = getintfield(L, 2, "seed", tree_def.seed);
	}
	else
		return 0;

	treegen::error e;
	if ((e = treegen::spawn_ltree (env, p0, ndef, tree_def)) != treegen::SUCCESS) {
		if (e == treegen::UNBALANCED_BRACKETS) {
			luaL_error(L, "spawn_tree(): closing ']' has no matching opening bracket");
		} else {
			luaL_error(L, "spawn_tree(): unknown error");
		}
	}

	return 1;
}

// transforming_liquid_add(pos)
int ModApiEnvMod::l_transforming_liquid_add(lua_State *L)
{
	GET_ENV_PTR;

	v3s16 p0 = read_v3s16(L, 1);
	env->getMap().transforming_liquid_add(p0);
	return 1;
}

// forceload_block(blockpos)
// blockpos = {x=num, y=num, z=num}
int ModApiEnvMod::l_forceload_block(lua_State *L)
{
	GET_ENV_PTR;

	v3s16 blockpos = read_v3s16(L, 1);
	env->getForceloadedBlocks()->insert(blockpos);
	return 0;
}

// forceload_free_block(blockpos)
// blockpos = {x=num, y=num, z=num}
int ModApiEnvMod::l_forceload_free_block(lua_State *L)
{
	GET_ENV_PTR;

	v3s16 blockpos = read_v3s16(L, 1);
	env->getForceloadedBlocks()->erase(blockpos);
	return 0;
}

void ModApiEnvMod::Initialize(lua_State *L, int top)
{
	API_FCT(set_node);
	API_FCT(add_node);
	API_FCT(swap_node);
	API_FCT(add_item);
	API_FCT(remove_node);
	API_FCT(get_node);
	API_FCT(get_node_or_nil);
	API_FCT(get_node_light);
	API_FCT(place_node);
	API_FCT(dig_node);
	API_FCT(punch_node);
	API_FCT(get_node_max_level);
	API_FCT(get_node_level);
	API_FCT(set_node_level);
	API_FCT(add_node_level);
	API_FCT(add_entity);
	API_FCT(find_nodes_with_meta);
	API_FCT(get_meta);
	API_FCT(get_node_timer);
	API_FCT(get_player_by_name);
	API_FCT(get_objects_inside_radius);
	API_FCT(set_timeofday);
	API_FCT(get_timeofday);
	API_FCT(get_gametime);
	API_FCT(get_day_count);
	API_FCT(find_node_near);
	API_FCT(find_nodes_in_area);
	API_FCT(find_nodes_in_area_under_air);
	API_FCT(fix_light);
	API_FCT(emerge_area);
	API_FCT(delete_area);
	API_FCT(get_perlin);
	API_FCT(get_perlin_map);
	API_FCT(get_voxel_manip);
	API_FCT(clear_objects);
	API_FCT(spawn_tree);
	API_FCT(find_path);
	API_FCT(line_of_sight);
	API_FCT(transforming_liquid_add);
	API_FCT(forceload_block);
	API_FCT(forceload_free_block);
}

void ModApiEnvMod::InitializeClient(lua_State *L, int top)
{
	API_FCT(get_timeofday);
	API_FCT(get_day_count);
	API_FCT(get_node_max_level);
	API_FCT(get_node_level);
	API_FCT(find_node_near);
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-02 07:57:11 +0000