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generated by cgit v1.2.3 (git 2.39.1) at 2025-03-02 12:03:05 +0000

/*
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_object.h"
#include <cmath>
#include "lua_api/l_internal.h"
#include "lua_api/l_inventory.h"
#include "lua_api/l_item.h"
#include "lua_api/l_playermeta.h"
#include "common/c_converter.h"
#include "common/c_content.h"
#include "log.h"
#include "tool.h"
#include "remoteplayer.h"
#include "server.h"
#include "hud.h"
#include "scripting_server.h"
#include "server/luaentity_sao.h"
#include "server/player_sao.h"
#include "server/serverinventorymgr.h"

/*
	ObjectRef
*/


ObjectRef* ObjectRef::checkobject(lua_State *L, int narg)
{
	luaL_checktype(L, narg, LUA_TUSERDATA);
	void *ud = luaL_checkudata(L, narg, className);
	if (ud == nullptr)
		luaL_typerror(L, narg, className);
	return *(ObjectRef**)ud;  // unbox pointer
}

ServerActiveObject* ObjectRef::getobject(ObjectRef *ref)
{
	ServerActiveObject *sao = ref->m_object;
	if (sao && sao->isGone())
		return nullptr;
	return sao;
}

LuaEntitySAO* ObjectRef::getluaobject(ObjectRef *ref)
{
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return nullptr;
	if (sao->getType() != ACTIVEOBJECT_TYPE_LUAENTITY)
		return nullptr;
	return (LuaEntitySAO*)sao;
}

PlayerSAO* ObjectRef::getplayersao(ObjectRef *ref)
{
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return nullptr;
	if (sao->getType() != ACTIVEOBJECT_TYPE_PLAYER)
		return nullptr;
	return (PlayerSAO*)sao;
}

RemotePlayer *ObjectRef::getplayer(ObjectRef *ref)
{
	PlayerSAO *playersao = getplayersao(ref);
	if (playersao == nullptr)
		return nullptr;
	return playersao->getPlayer();
}

// Exported functions

// garbage collector
int ObjectRef::gc_object(lua_State *L) {
	ObjectRef *obj = *(ObjectRef **)(lua_touserdata(L, 1));
	delete obj;
	return 0;
}

// remove(self)
int ObjectRef::l_remove(lua_State *L)
{
	GET_ENV_PTR;

	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;
	if (sao->getType() == ACTIVEOBJECT_TYPE_PLAYER)
		return 0;

	sao->clearChildAttachments();
	sao->clearParentAttachment();

	verbosestream << "ObjectRef::l_remove(): id=" << sao->getId() << std::endl;
	sao->markForRemoval();
	return 0;
}

// get_pos(self)
int ObjectRef::l_get_pos(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	push_v3f(L, sao->getBasePosition() / BS);
	return 1;
}

// set_pos(self, pos)
int ObjectRef::l_set_pos(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	v3f pos = checkFloatPos(L, 2);

	sao->setPos(pos);
	return 0;
}

// move_to(self, pos, continuous)
int ObjectRef::l_move_to(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	v3f pos = checkFloatPos(L, 2);
	bool continuous = readParam<bool>(L, 3);

	sao->moveTo(pos, continuous);
	return 0;
}

// punch(self, puncher, time_from_last_punch, tool_capabilities, dir)
int ObjectRef::l_punch(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ObjectRef *puncher_ref = checkobject(L, 2);
	ServerActiveObject *sao = getobject(ref);
	ServerActiveObject *puncher = getobject(puncher_ref);
	if (sao == nullptr || puncher == nullptr)
		return 0;

	float time_from_last_punch = readParam<float>(L, 3, 1000000.0f);
	ToolCapabilities toolcap = read_tool_capabilities(L, 4);
	v3f dir = readParam<v3f>(L, 5, sao->getBasePosition() - puncher->getBasePosition());

	dir.normalize();
	u16 src_original_hp = sao->getHP();
	u16 dst_origin_hp = puncher->getHP();

	u16 wear = sao->punch(dir, &toolcap, puncher, time_from_last_punch);
	lua_pushnumber(L, wear);

	// If the punched is a player, and its HP changed
	if (src_original_hp != sao->getHP() &&
			sao->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
		getServer(L)->SendPlayerHPOrDie((PlayerSAO *)sao,
				PlayerHPChangeReason(PlayerHPChangeReason::PLAYER_PUNCH, puncher));
	}

	// If the puncher is a player, and its HP changed
	if (dst_origin_hp != puncher->getHP() &&
			puncher->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
		getServer(L)->SendPlayerHPOrDie((PlayerSAO *)puncher,
				PlayerHPChangeReason(PlayerHPChangeReason::PLAYER_PUNCH, sao));
	}
	return 1;
}

// right_click(self, clicker)
int ObjectRef::l_right_click(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ObjectRef *ref2 = checkobject(L, 2);
	ServerActiveObject *sao = getobject(ref);
	ServerActiveObject *sao2 = getobject(ref2);
	if (sao == nullptr || sao2 == nullptr)
		return 0;

	sao->rightClick(sao2);
	return 0;
}

// set_hp(self, hp, reason)
int ObjectRef::l_set_hp(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	int hp = readParam<float>(L, 2);
	PlayerHPChangeReason reason(PlayerHPChangeReason::SET_HP);

	reason.from_mod = true;
	if (lua_istable(L, 3)) {
		lua_pushvalue(L, 3);

		lua_getfield(L, -1, "type");
		if (lua_isstring(L, -1) &&
				!reason.setTypeFromString(readParam<std::string>(L, -1))) {
			errorstream << "Bad type given!" << std::endl;
		}
		lua_pop(L, 1);

		reason.lua_reference = luaL_ref(L, LUA_REGISTRYINDEX);
	}

	sao->setHP(hp, reason);
	if (sao->getType() == ACTIVEOBJECT_TYPE_PLAYER)
		getServer(L)->SendPlayerHPOrDie((PlayerSAO *)sao, reason);
	if (reason.hasLuaReference())
		luaL_unref(L, LUA_REGISTRYINDEX, reason.lua_reference);
	return 0;
}

// get_hp(self)
int ObjectRef::l_get_hp(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr) {
		// Default hp is 1
		lua_pushnumber(L, 1);
		return 1;
	}

	int hp = sao->getHP();

	lua_pushnumber(L, hp);
	return 1;
}

// get_inventory(self)
int ObjectRef::l_get_inventory(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	InventoryLocation loc = sao->getInventoryLocation();
	if (getServerInventoryMgr(L)->getInventory(loc) != nullptr)
		InvRef::create(L, loc);
	else
		lua_pushnil(L); // An object may have no inventory (nil)
	return 1;
}

// get_wield_list(self)
int ObjectRef::l_get_wield_list(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	lua_pushstring(L, sao->getWieldList().c_str());
	return 1;
}

// get_wield_index(self)
int ObjectRef::l_get_wield_index(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	lua_pushinteger(L, sao->getWieldIndex() + 1);
	return 1;
}

// get_wielded_item(self)
int ObjectRef::l_get_wielded_item(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr) {
		// Empty ItemStack
		LuaItemStack::create(L, ItemStack());
		return 1;
	}

	ItemStack selected_item;
	sao->getWieldedItem(&selected_item, nullptr);
	LuaItemStack::create(L, selected_item);
	return 1;
}

// set_wielded_item(self, item)
int ObjectRef::l_set_wielded_item(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	ItemStack item = read_item(L, 2, getServer(L)->idef());

	bool success = sao->setWieldedItem(item);
	if (success && sao->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
		getServer(L)->SendInventory((PlayerSAO *)sao, true);
	}
	lua_pushboolean(L, success);
	return 1;
}

// set_armor_groups(self, groups)
int ObjectRef::l_set_armor_groups(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	ItemGroupList groups;

	read_groups(L, 2, groups);
	sao->setArmorGroups(groups);
	return 0;
}

// get_armor_groups(self)
int ObjectRef::l_get_armor_groups(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	push_groups(L, sao->getArmorGroups());
	return 1;
}

// set_animation(self, frame_range, frame_speed, frame_blend, frame_loop)
int ObjectRef::l_set_animation(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	v2f frame_range   = readParam<v2f>(L,  2, v2f(1, 1));
	float frame_speed = readParam<float>(L, 3, 15.0f);
	float frame_blend = readParam<float>(L, 4, 0.0f);
	bool frame_loop   = readParam<bool>(L, 5, true);

	sao->setAnimation(frame_range, frame_speed, frame_blend, frame_loop);
	return 0;
}

// get_animation(self)
int ObjectRef::l_get_animation(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	v2f frames = v2f(1, 1);
	float frame_speed = 15;
	float frame_blend = 0;
	bool frame_loop = true;

	sao->getAnimation(&frames, &frame_speed, &frame_blend, &frame_loop);
	push_v2f(L, frames);
	lua_pushnumber(L, frame_speed);
	lua_pushnumber(L, frame_blend);
	lua_pushboolean(L, frame_loop);
	return 4;
}

// set_local_animation(self, idle, walk, dig, walk_while_dig, frame_speed)
int ObjectRef::l_set_local_animation(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	if (player == nullptr)
		return 0;

	v2s32 frames[4];
	for (int i=0;i<4;i++) {
		if (!lua_isnil(L, 2+1))
			frames[i] = read_v2s32(L, 2+i);
	}
	float frame_speed = readParam<float>(L, 6, 30.0f);

	getServer(L)->setLocalPlayerAnimations(player, frames, frame_speed);
	lua_pushboolean(L, true);
	return 1;
}

// get_local_animation(self)
int ObjectRef::l_get_local_animation(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	if (player == nullptr)
		return 0;

	v2s32 frames[4];
	float frame_speed;
	player->getLocalAnimations(frames, &frame_speed);

	for (const v2s32 &frame : frames) {
		push_v2s32(L, frame);
	}

	lua_pushnumber(L, frame_speed);
	return 5;
}

// set_eye_offset(self, firstperson, thirdperson)
int ObjectRef::l_set_eye_offset(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	if (player == nullptr)
		return 0;

	v3f offset_first = readParam<v3f>(L, 2, v3f(0, 0, 0));
	v3f offset_third = readParam<v3f>(L, 3, v3f(0, 0, 0));

	// Prevent abuse of offset values (keep player always visible)
	offset_third.X = rangelim(offset_third.X,-10,10);
	offset_third.Z = rangelim(offset_third.Z,-5,5);
	/* TODO: if possible: improve the camera collision detection to allow Y <= -1.5) */
	offset_third.Y = rangelim(offset_third.Y,-10,15); //1.5*BS

	getServer(L)->setPlayerEyeOffset(player, offset_first, offset_third);
	lua_pushboolean(L, true);
	return 1;
}

// get_eye_offset(self)
int ObjectRef::l_get_eye_offset(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	if (player == nullptr)
		return 0;

	push_v3f(L, player->eye_offset_first);
	push_v3f(L, player->eye_offset_third);
	return 2;
}

// send_mapblock(self, pos)
int ObjectRef::l_send_mapblock(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	if (player == nullptr)
		return 0;

	v3s16 pos = read_v3s16(L, 2);

	session_t peer_id = player->getPeerId();
	bool r = getServer(L)->SendBlock(peer_id, pos);

	lua_pushboolean(L, r);
	return 1;
}

// set_animation_frame_speed(self, frame_speed)
int ObjectRef::l_set_animation_frame_speed(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	if (!lua_isnil(L, 2)) {
		float frame_speed = readParam<float>(L, 2);
		sao->setAnimationSpeed(frame_speed);
		lua_pushboolean(L, true);
	} else {
		lua_pushboolean(L, false);
	}
	return 1;
}

// set_bone_position(self, bone, position, rotation)
int ObjectRef::l_set_bone_position(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	std::string bone = readParam<std::string>(L, 2, "");
	v3f position = readParam<v3f>(L, 3, v3f(0, 0, 0));
	v3f rotation = readParam<v3f>(L, 4, v3f(0, 0, 0));

	sao->setBonePosition(bone, position, rotation);
	return 0;
}

// get_bone_position(self, bone)
int ObjectRef::l_get_bone_position(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	std::string bone = readParam<std::string>(L, 2, "");

	v3f position = v3f(0, 0, 0);
	v3f rotation = v3f(0, 0, 0);
	sao->getBonePosition(bone, &position, &rotation);

	push_v3f(L, position);
	push_v3f(L, rotation);
	return 2;
}

// set_attach(self, parent, bone, position, rotation, force_visible)
int ObjectRef::l_set_attach(lua_State *L)
{
	GET_ENV_PTR;
	ObjectRef *ref = checkobject(L, 1);
	ObjectRef *parent_ref = checkobject(L, 2);
	ServerActiveObject *sao = getobject(ref);
	ServerActiveObject *parent = getobject(parent_ref);
	if (sao == nullptr || parent == nullptr)
		return 0;
	if (sao == parent)
		throw LuaError("ObjectRef::set_attach: attaching object to itself is not allowed.");

	int parent_id;
	std::string bone;
	v3f position;
	v3f rotation;
	bool force_visible;

	sao->getAttachment(&parent_id, &bone, &position, &rotation, &force_visible);
	if (parent_id) {
		ServerActiveObject *old_parent = env->getActiveObject(parent_id);
		old_parent->removeAttachmentChild(sao->getId());
	}

	bone          = readParam<std::string>(L, 3, "");
	position      = readParam<v3f>(L, 4, v3f(0, 0, 0));
	rotation      = readParam<v3f>(L, 5, v3f(0, 0, 0));
	force_visible = readParam<bool>(L, 6, false);

	sao->setAttachment(parent->getId(), bone, position, rotation, force_visible);
	parent->addAttachmentChild(sao->getId());
	return 0;
}

// get_attach(self)
int ObjectRef::l_get_attach(lua_State *L)
{
	GET_ENV_PTR;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	int parent_id;
	std::string bone;
	v3f position;
	v3f rotation;
	bool force_visible;

	sao->getAttachment(&parent_id, &bone, &position, &rotation, &force_visible);
	if (parent_id == 0)
		return 0;

	ServerActiveObject *parent = env->getActiveObject(parent_id);
	getScriptApiBase(L)->objectrefGetOrCreate(L, parent);
	lua_pushlstring(L, bone.c_str(), bone.size());
	push_v3f(L, position);
	push_v3f(L, rotation);
	lua_pushboolean(L, force_visible);
	return 5;
}

// get_children(self)
int ObjectRef::l_get_children(lua_State *L)
{
	GET_ENV_PTR;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	const std::unordered_set<int> child_ids = sao->getAttachmentChildIds();
	int i = 0;

	lua_createtable(L, child_ids.size(), 0);
	for (const int id : child_ids) {
		ServerActiveObject *child = env->getActiveObject(id);
		getScriptApiBase(L)->objectrefGetOrCreate(L, child);
		lua_rawseti(L, -2, ++i);
	}
	return 1;
}

// set_detach(self)
int ObjectRef::l_set_detach(lua_State *L)
{
	GET_ENV_PTR;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	sao->clearParentAttachment();
	return 0;
}

// set_properties(self, properties)
int ObjectRef::l_set_properties(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	ObjectProperties *prop = sao->accessObjectProperties();
	if (prop == nullptr)
		return 0;

	read_object_properties(L, 2, sao, prop, getServer(L)->idef());
	sao->notifyObjectPropertiesModified();
	return 0;
}

// get_properties(self)
int ObjectRef::l_get_properties(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	ObjectProperties *prop = sao->accessObjectProperties();
	if (prop == nullptr)
		return 0;

	push_object_properties(L, prop);
	return 1;
}

// is_player(self)
int ObjectRef::l_is_player(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	lua_pushboolean(L, (player != nullptr));
	return 1;
}

// set_nametag_attributes(self, attributes)
int ObjectRef::l_set_nametag_attributes(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	ObjectProperties *prop = sao->accessObjectProperties();
	if (prop == nullptr)
		return 0;

	lua_getfield(L, 2, "color");
	if (!lua_isnil(L, -1)) {
		video::SColor color = prop->nametag_color;
		read_color(L, -1, &color);
		prop->nametag_color = color;
	}
	lua_pop(L, 1);

	std::string nametag = getstringfield_default(L, 2, "text", "");
	prop->nametag = nametag;

	sao->notifyObjectPropertiesModified();
	lua_pushboolean(L, true);
	return 1;
}

// get_nametag_attributes(self)
int ObjectRef::l_get_nametag_attributes(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	ObjectProperties *prop = sao->accessObjectProperties();
	if (!prop)
		return 0;

	video::SColor color = prop->nametag_color;

	lua_newtable(L);
	push_ARGB8(L, color);
	lua_setfield(L, -2, "color");
	lua_pushstring(L, prop->nametag.c_str());
	lua_setfield(L, -2, "text");
	return 1;
}

/* LuaEntitySAO-only */

// set_velocity(self, velocity)
int ObjectRef::l_set_velocity(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	LuaEntitySAO *sao = getluaobject(ref);
	if (sao == nullptr)
		return 0;

	v3f vel = checkFloatPos(L, 2);

	sao->setVelocity(vel);
	return 0;
}

// add_velocity(self, velocity)
int ObjectRef::l_add_velocity(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	v3f vel = checkFloatPos(L, 2);

	if (sao->getType() == ACTIVEOBJECT_TYPE_LUAENTITY) {
		LuaEntitySAO *entitysao = dynamic_cast<LuaEntitySAO*>(sao);
		entitysao->addVelocity(vel);
	} else if (sao->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
		PlayerSAO *playersao = dynamic_cast<PlayerSAO*>(sao);
		playersao->setMaxSpeedOverride(vel);
		getServer(L)->SendPlayerSpeed(playersao->getPeerID(), vel);
	}

	return 0;
}

// get_velocity(self)
int ObjectRef::l_get_velocity(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	ServerActiveObject *sao = getobject(ref);
	if (sao == nullptr)
		return 0;

	if (sao->getType() == ACTIVEOBJECT_TYPE_LUAENTITY) {
		LuaEntitySAO *entitysao = dynamic_cast<LuaEntitySAO*>(sao);
		v3f vel = entitysao->getVelocity();
		pushFloatPos(L, vel);
		return 1;
	} else if (sao->getType() == ACTIVEOBJECT_TYPE_PLAYER) {
		RemotePlayer *player = dynamic_cast<PlayerSAO*>(sao)->getPlayer();
		push_v3f(L, player->getSpeed() / BS);
		return 1;
	}

	lua_pushnil(L);
	return 1;
}

// set_acceleration(self, acceleration)
int ObjectRef::l_set_acceleration(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	LuaEntitySAO *entitysao = getluaobject(ref);
	if (entitysao == nullptr)
		return 0;

	v3f acceleration = checkFloatPos(L, 2);

	entitysao->setAcceleration(acceleration);
	return 0;
}

// get_acceleration(self)
int ObjectRef::l_get_acceleration(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	LuaEntitySAO *entitysao = getluaobject(ref);
	if (entitysao == nullptr)
		return 0;

	v3f acceleration = entitysao->getAcceleration();
	pushFloatPos(L, acceleration);
	return 1;
}

// set_rotation(self, rotation)
int ObjectRef::l_set_rotation(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	LuaEntitySAO *entitysao = getluaobject(ref);
	if (entitysao == nullptr)
		return 0;

	v3f rotation = check_v3f(L, 2) * core::RADTODEG;

	entitysao->setRotation(rotation);
	return 0;
}

// get_rotation(self)
int ObjectRef::l_get_rotation(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	LuaEntitySAO *entitysao = getluaobject(ref);
	if (entitysao == nullptr)
		return 0;

	v3f rotation = entitysao->getRotation() * core::DEGTORAD;

	lua_newtable(L);
	push_v3f(L, rotation);
	return 1;
}

// set_yaw(self, yaw)
int ObjectRef::l_set_yaw(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	LuaEntitySAO *entitysao = getluaobject(ref);
	if (entitysao == nullptr)
		return 0;

	float yaw = readParam<float>(L, 2) * core::RADTODEG;

	entitysao->setRotation(v3f(0, yaw, 0));
	return 0;
}

// get_yaw(self)
int ObjectRef::l_get_yaw(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	LuaEntitySAO *entitysao = getluaobject(ref);
	if (entitysao == nullptr)
		return 0;

	float yaw = entitysao->getRotation().Y * core::DEGTORAD;

	lua_pushnumber(L, yaw);
	return 1;
}

// set_texture_mod(self, mod)
int ObjectRef::l_set_texture_mod(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	LuaEntitySAO *entitysao = getluaobject(ref);
	if (entitysao == nullptr)
		return 0;

	std::string mod = readParam<std::string>(L, 2);

	entitysao->setTextureMod(mod);
	return 0;
}

// get_texture_mod(self)
int ObjectRef::l_get_texture_mod(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	LuaEntitySAO *entitysao = getluaobject(ref);
	if (entitysao == nullptr)
		return 0;

	std::string mod = entitysao->getTextureMod();

	lua_pushstring(L, mod.c_str());
	return 1;
}

// set_sprite(self, start_frame, num_frames, framelength, select_x_by_camera)
int ObjectRef::l_set_sprite(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	LuaEntitySAO *entitysao = getluaobject(ref);
	if (entitysao == nullptr)
		return 0;

	v2s16 start_frame = readParam<v2s16>(L, 2, v2s16(0,0));
	int num_frames    = readParam<int>(L, 3, 1);
	float framelength = readParam<float>(L, 4, 0.2f);
	bool select_x_by_camera = readParam<bool>(L, 5, false);

	entitysao->setSprite(start_frame, num_frames, framelength, select_x_by_camera);
	return 0;
}

// DEPRECATED
// get_entity_name(self)
int ObjectRef::l_get_entity_name(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	LuaEntitySAO *entitysao = getluaobject(ref);
	log_deprecated(L,"Deprecated call to \"get_entity_name");
	if (entitysao == nullptr)
		return 0;

	std::string name = entitysao->getName();

	lua_pushstring(L, name.c_str());
	return 1;
}

// get_luaentity(self)
int ObjectRef::l_get_luaentity(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	LuaEntitySAO *entitysao = getluaobject(ref);
	if (entitysao == nullptr)
		return 0;

	luaentity_get(L, entitysao->getId());
	return 1;
}

/* Player-only */

// get_player_name(self)
int ObjectRef::l_get_player_name(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	if (player == nullptr) {
		lua_pushlstring(L, "", 0);
		return 1;
	}

	lua_pushstring(L, player->getName());
	return 1;
}

// get_look_dir(self)
int ObjectRef::l_get_look_dir(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	float pitch = playersao->getRadLookPitchDep();
	float yaw = playersao->getRadYawDep();
	v3f v(std::cos(pitch) * std::cos(yaw), std::sin(pitch), std::cos(pitch) *
		std::sin(yaw));

	push_v3f(L, v);
	return 1;
}

// DEPRECATED
// get_look_pitch(self)
int ObjectRef::l_get_look_pitch(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	log_deprecated(L,
		"Deprecated call to get_look_pitch, use get_look_vertical instead");

	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	lua_pushnumber(L, playersao->getRadLookPitchDep());
	return 1;
}

// DEPRECATED
// get_look_yaw(self)
int ObjectRef::l_get_look_yaw(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	log_deprecated(L,
		"Deprecated call to get_look_yaw, use get_look_horizontal instead");

	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	lua_pushnumber(L, playersao->getRadYawDep());
	return 1;
}

// get_look_vertical(self)
int ObjectRef::l_get_look_vertical(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	lua_pushnumber(L, playersao->getRadLookPitch());
	return 1;
}

// get_look_horizontal(self)
int ObjectRef::l_get_look_horizontal(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	lua_pushnumber(L, playersao->getRadRotation().Y);
	return 1;
}

// set_look_vertical(self, radians)
int ObjectRef::l_set_look_vertical(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	float pitch = readParam<float>(L, 2) * core::RADTODEG;

	playersao->setLookPitchAndSend(pitch);
	return 1;
}

// set_look_horizontal(self, radians)
int ObjectRef::l_set_look_horizontal(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	float yaw = readParam<float>(L, 2) * core::RADTODEG;

	playersao->setPlayerYawAndSend(yaw);
	return 1;
}

// DEPRECATED
// set_look_pitch(self, radians)
int ObjectRef::l_set_look_pitch(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	log_deprecated(L,
		"Deprecated call to set_look_pitch, use set_look_vertical instead.");

	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	float pitch = readParam<float>(L, 2) * core::RADTODEG;

	playersao->setLookPitchAndSend(pitch);
	return 1;
}

// DEPRECATED
// set_look_yaw(self, radians)
int ObjectRef::l_set_look_yaw(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;

	log_deprecated(L,
		"Deprecated call to set_look_yaw, use set_look_horizontal instead.");

	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	float yaw = readParam<float>(L, 2) * core::RADTODEG;

	playersao->setPlayerYawAndSend(yaw);
	return 1;
}

// set_fov(self, degrees, is_multiplier, transition_time)
int ObjectRef::l_set_fov(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	if (player == nullptr)
		return 0;

	float degrees = static_cast<f32>(luaL_checknumber(L, 2));
	bool is_multiplier = readParam<bool>(L, 3, false);
	float transition_time = lua_isnumber(L, 4) ?
		static_cast<f32>(luaL_checknumber(L, 4)) : 0.0f;

	player->setFov({degrees, is_multiplier, transition_time});
	getServer(L)->SendPlayerFov(player->getPeerId());
	return 0;
}

// get_fov(self)
int ObjectRef::l_get_fov(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	if (player == nullptr)
		return 0;

	PlayerFovSpec fov_spec = player->getFov();

	lua_pushnumber(L, fov_spec.fov);
	lua_pushboolean(L, fov_spec.is_multiplier);
	lua_pushnumber(L, fov_spec.transition_time);
	return 3;
}

// set_breath(self, breath)
int ObjectRef::l_set_breath(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	u16 breath = luaL_checknumber(L, 2);

	playersao->setBreath(breath);
	return 0;
}

// get_breath(self)
int ObjectRef::l_get_breath(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	u16 breath = playersao->getBreath();

	lua_pushinteger(L, breath);
	return 1;
}

// set_attribute(self, attribute, value)
int ObjectRef::l_set_attribute(lua_State *L)
{
	log_deprecated(L,
		"Deprecated call to set_attribute, use MetaDataRef methods instead.");

	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	std::string attr = luaL_checkstring(L, 2);
	if (lua_isnil(L, 3)) {
		playersao->getMeta().removeString(attr);
	} else {
		std::string value = luaL_checkstring(L, 3);
		playersao->getMeta().setString(attr, value);
	}
	return 1;
}

// get_attribute(self, attribute)
int ObjectRef::l_get_attribute(lua_State *L)
{
	log_deprecated(L,
		"Deprecated call to get_attribute, use MetaDataRef methods instead.");

	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO* playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	std::string attr = luaL_checkstring(L, 2);

	std::string value;
	if (playersao->getMeta().getStringToRef(attr, value)) {
		lua_pushstring(L, value.c_str());
		return 1;
	}

	return 0;
}


// get_meta(self, attribute)
int ObjectRef::l_get_meta(lua_State *L)
{
	ObjectRef *ref = checkobject(L, 1);
	PlayerSAO *playersao = getplayersao(ref);
	if (playersao == nullptr)
		return 0;

	PlayerMetaRef::create(L, &playersao->getMeta());
	return 1;
}


// set_inventory_formspec(self, formspec)
int ObjectRef::l_set_inventory_formspec(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	if (player == nullptr)
		return 0;

	std::string formspec = luaL_checkstring(L, 2);

	player->inventory_formspec = formspec;
	getServer(L)->reportInventoryFormspecModified(player->getName());
	lua_pushboolean(L, true);
	return 1;
}

// get_inventory_formspec(self) -> formspec
int ObjectRef::l_get_inventory_formspec(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	if (player == nullptr)
		return 0;

	std::string formspec = player->inventory_formspec;

	lua_pushlstring(L, formspec.c_str(), formspec.size());
	return 1;
}

// set_formspec_prepend(self, formspec)
int ObjectRef::l_set_formspec_prepend(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	if (player == nullptr)
		return 0;

	std::string formspec = luaL_checkstring(L, 2);

	player->formspec_prepend = formspec;
	getServer(L)->reportFormspecPrependModified(player->getName());
	lua_pushboolean(L, true);
	return 1;
}

// get_formspec_prepend(self)
int ObjectRef::l_get_formspec_prepend(lua_State *L)
{
	NO_MAP_LOCK_REQUIRED;
	ObjectRef *ref = checkobject(L, 1);
	RemotePlayer *player = getplayer(ref);
	if (player == nullptr)
		 return 0;

	std::string formspec = player->formspec_prepend;

	lua_pushlstring(L, formspec.c_str(), formspec.size());
	return 1;