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Diffstat (limited to 'src/server/player_sao.cpp')
| -rw-r--r-- | src/server/player_sao.cpp | 665 |
1 files changed, 665 insertions, 0 deletions
diff --git a/src/server/player_sao.cpp b/src/server/player_sao.cpp new file mode 100644 index 000000000..67efed210 --- /dev/null +++ b/src/server/player_sao.cpp @@ -0,0 +1,665 @@ +/* +Minetest +Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com> +Copyright (C) 2013-2020 Minetest core developers & community + +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 "player_sao.h" +#include "nodedef.h" +#include "remoteplayer.h" +#include "scripting_server.h" +#include "server.h" +#include "serverenvironment.h" + +PlayerSAO::PlayerSAO(ServerEnvironment *env_, RemotePlayer *player_, session_t peer_id_, + bool is_singleplayer): + UnitSAO(env_, v3f(0,0,0)), + m_player(player_), + m_peer_id(peer_id_), + m_is_singleplayer(is_singleplayer) +{ + SANITY_CHECK(m_peer_id != PEER_ID_INEXISTENT); + + m_prop.hp_max = PLAYER_MAX_HP_DEFAULT; + m_prop.breath_max = PLAYER_MAX_BREATH_DEFAULT; + m_prop.physical = false; + m_prop.collisionbox = aabb3f(-0.3f, 0.0f, -0.3f, 0.3f, 1.77f, 0.3f); + m_prop.selectionbox = aabb3f(-0.3f, 0.0f, -0.3f, 0.3f, 1.77f, 0.3f); + m_prop.pointable = true; + // Start of default appearance, this should be overwritten by Lua + m_prop.visual = "upright_sprite"; + m_prop.visual_size = v3f(1, 2, 1); + m_prop.textures.clear(); + m_prop.textures.emplace_back("player.png"); + m_prop.textures.emplace_back("player_back.png"); + m_prop.colors.clear(); + m_prop.colors.emplace_back(255, 255, 255, 255); + m_prop.spritediv = v2s16(1,1); + m_prop.eye_height = 1.625f; + // End of default appearance + m_prop.is_visible = true; + m_prop.backface_culling = false; + m_prop.makes_footstep_sound = true; + m_prop.stepheight = PLAYER_DEFAULT_STEPHEIGHT * BS; + m_hp = m_prop.hp_max; + m_breath = m_prop.breath_max; + // Disable zoom in survival mode using a value of 0 + m_prop.zoom_fov = g_settings->getBool("creative_mode") ? 15.0f : 0.0f; + + if (!g_settings->getBool("enable_damage")) + m_armor_groups["immortal"] = 1; +} + +void PlayerSAO::finalize(RemotePlayer *player, const std::set<std::string> &privs) +{ + assert(player); + m_player = player; + m_privs = privs; +} + +v3f PlayerSAO::getEyeOffset() const +{ + return v3f(0, BS * m_prop.eye_height, 0); +} + +std::string PlayerSAO::getDescription() +{ + return std::string("player ") + m_player->getName(); +} + +// Called after id has been set and has been inserted in environment +void PlayerSAO::addedToEnvironment(u32 dtime_s) +{ + ServerActiveObject::addedToEnvironment(dtime_s); + ServerActiveObject::setBasePosition(m_base_position); + m_player->setPlayerSAO(this); + m_player->setPeerId(m_peer_id); + m_last_good_position = m_base_position; +} + +// Called before removing from environment +void PlayerSAO::removingFromEnvironment() +{ + ServerActiveObject::removingFromEnvironment(); + if (m_player->getPlayerSAO() == this) { + unlinkPlayerSessionAndSave(); + for (u32 attached_particle_spawner : m_attached_particle_spawners) { + m_env->deleteParticleSpawner(attached_particle_spawner, false); + } + } +} + +std::string PlayerSAO::getClientInitializationData(u16 protocol_version) +{ + std::ostringstream os(std::ios::binary); + + // Protocol >= 15 + writeU8(os, 1); // version + os << serializeString(m_player->getName()); // name + writeU8(os, 1); // is_player + writeS16(os, getId()); // id + writeV3F32(os, m_base_position); + writeV3F32(os, m_rotation); + writeU16(os, getHP()); + + std::ostringstream msg_os(std::ios::binary); + msg_os << serializeLongString(getPropertyPacket()); // message 1 + msg_os << serializeLongString(generateUpdateArmorGroupsCommand()); // 2 + msg_os << serializeLongString(generateUpdateAnimationCommand()); // 3 + for (const auto &bone_pos : m_bone_position) { + msg_os << serializeLongString(generateUpdateBonePositionCommand( + bone_pos.first, bone_pos.second.X, bone_pos.second.Y)); // m_bone_position.size + } + msg_os << serializeLongString(generateUpdateAttachmentCommand()); // 4 + msg_os << serializeLongString(generateUpdatePhysicsOverrideCommand()); // 5 + + int message_count = 5 + m_bone_position.size(); + + for (const auto &id : getAttachmentChildIds()) { + if (ServerActiveObject *obj = m_env->getActiveObject(id)) { + message_count++; + msg_os << serializeLongString(obj->generateUpdateInfantCommand( + id, protocol_version)); + } + } + + writeU8(os, message_count); + std::string serialized = msg_os.str(); + os.write(serialized.c_str(), serialized.size()); + + // return result + return os.str(); +} + +void PlayerSAO::getStaticData(std::string * result) const +{ + FATAL_ERROR("Obsolete function"); +} + +void PlayerSAO::step(float dtime, bool send_recommended) +{ + if (!isImmortal() && m_drowning_interval.step(dtime, 2.0f)) { + // Get nose/mouth position, approximate with eye position + v3s16 p = floatToInt(getEyePosition(), BS); + MapNode n = m_env->getMap().getNode(p); + const ContentFeatures &c = m_env->getGameDef()->ndef()->get(n); + // If node generates drown + if (c.drowning > 0 && m_hp > 0) { + if (m_breath > 0) + setBreath(m_breath - 1); + + // No more breath, damage player + if (m_breath == 0) { + PlayerHPChangeReason reason(PlayerHPChangeReason::DROWNING); + setHP(m_hp - c.drowning, reason); + m_env->getGameDef()->SendPlayerHPOrDie(this, reason); + } + } + } + + if (m_breathing_interval.step(dtime, 0.5f) && !isImmortal()) { + // Get nose/mouth position, approximate with eye position + v3s16 p = floatToInt(getEyePosition(), BS); + MapNode n = m_env->getMap().getNode(p); + const ContentFeatures &c = m_env->getGameDef()->ndef()->get(n); + // If player is alive & not drowning & not in ignore & not immortal, breathe + if (m_breath < m_prop.breath_max && c.drowning == 0 && + n.getContent() != CONTENT_IGNORE && m_hp > 0) + setBreath(m_breath + 1); + } + + if (!isImmortal() && m_node_hurt_interval.step(dtime, 1.0f)) { + u32 damage_per_second = 0; + std::string nodename; + // Lowest and highest damage points are 0.1 within collisionbox + float dam_top = m_prop.collisionbox.MaxEdge.Y - 0.1f; + + // Sequence of damage points, starting 0.1 above feet and progressing + // upwards in 1 node intervals, stopping below top damage point. + for (float dam_height = 0.1f; dam_height < dam_top; dam_height++) { + v3s16 p = floatToInt(m_base_position + + v3f(0.0f, dam_height * BS, 0.0f), BS); + MapNode n = m_env->getMap().getNode(p); + const ContentFeatures &c = m_env->getGameDef()->ndef()->get(n); + if (c.damage_per_second > damage_per_second) { + damage_per_second = c.damage_per_second; + nodename = c.name; + } + } + + // Top damage point + v3s16 ptop = floatToInt(m_base_position + + v3f(0.0f, dam_top * BS, 0.0f), BS); + MapNode ntop = m_env->getMap().getNode(ptop); + const ContentFeatures &c = m_env->getGameDef()->ndef()->get(ntop); + if (c.damage_per_second > damage_per_second) { + damage_per_second = c.damage_per_second; + nodename = c.name; + } + + if (damage_per_second != 0 && m_hp > 0) { + s32 newhp = (s32)m_hp - (s32)damage_per_second; + PlayerHPChangeReason reason(PlayerHPChangeReason::NODE_DAMAGE, nodename); + setHP(newhp, reason); + m_env->getGameDef()->SendPlayerHPOrDie(this, reason); + } + } + + if (!m_properties_sent) { + m_properties_sent = true; + std::string str = getPropertyPacket(); + // create message and add to list + m_messages_out.emplace(getId(), true, str); + m_env->getScriptIface()->player_event(this, "properties_changed"); + } + + // If attached, check that our parent is still there. If it isn't, detach. + if (m_attachment_parent_id && !isAttached()) { + // This is handled when objects are removed from the map + warningstream << "PlayerSAO::step() id=" << m_id << + " is attached to nonexistent parent. This is a bug." << std::endl; + clearParentAttachment(); + setBasePosition(m_last_good_position); + m_env->getGameDef()->SendMovePlayer(m_peer_id); + } + + //dstream<<"PlayerSAO::step: dtime: "<<dtime<<std::endl; + + // Set lag pool maximums based on estimated lag + const float LAG_POOL_MIN = 5.0f; + float lag_pool_max = m_env->getMaxLagEstimate() * 2.0f; + if(lag_pool_max < LAG_POOL_MIN) + lag_pool_max = LAG_POOL_MIN; + m_dig_pool.setMax(lag_pool_max); + m_move_pool.setMax(lag_pool_max); + + // Increment cheat prevention timers + m_dig_pool.add(dtime); + m_move_pool.add(dtime); + m_time_from_last_teleport += dtime; + m_time_from_last_punch += dtime; + m_nocheat_dig_time += dtime; + m_max_speed_override_time = MYMAX(m_max_speed_override_time - dtime, 0.0f); + + // Each frame, parent position is copied if the object is attached, + // otherwise it's calculated normally. + // If the object gets detached this comes into effect automatically from + // the last known origin. + if (isAttached()) { + v3f pos = m_env->getActiveObject(m_attachment_parent_id)->getBasePosition(); + m_last_good_position = pos; + setBasePosition(pos); + } + + if (!send_recommended) + return; + + if (m_position_not_sent) { + m_position_not_sent = false; + float update_interval = m_env->getSendRecommendedInterval(); + v3f pos; + // When attached, the position is only sent to clients where the + // parent isn't known + if (isAttached()) + pos = m_last_good_position; + else + pos = m_base_position; + + std::string str = generateUpdatePositionCommand( + pos, + v3f(0.0f, 0.0f, 0.0f), + v3f(0.0f, 0.0f, 0.0f), + m_rotation, + true, + false, + update_interval + ); + // create message and add to list + m_messages_out.emplace(getId(), false, str); + } + + if (!m_physics_override_sent) { + m_physics_override_sent = true; + // create message and add to list + m_messages_out.emplace(getId(), true, generateUpdatePhysicsOverrideCommand()); + } + + sendOutdatedData(); +} + +std::string PlayerSAO::generateUpdatePhysicsOverrideCommand() const +{ + std::ostringstream os(std::ios::binary); + // command + writeU8(os, AO_CMD_SET_PHYSICS_OVERRIDE); + // parameters + writeF32(os, m_physics_override_speed); + writeF32(os, m_physics_override_jump); + writeF32(os, m_physics_override_gravity); + // these are sent inverted so we get true when the server sends nothing + writeU8(os, !m_physics_override_sneak); + writeU8(os, !m_physics_override_sneak_glitch); + writeU8(os, !m_physics_override_new_move); + return os.str(); +} + +void PlayerSAO::setBasePosition(const v3f &position) +{ + if (m_player && position != m_base_position) + m_player->setDirty(true); + + // This needs to be ran for attachments too + ServerActiveObject::setBasePosition(position); + + // Updating is not wanted/required for player migration + if (m_env) { + m_position_not_sent = true; + } +} + +void PlayerSAO::setPos(const v3f &pos) +{ + if(isAttached()) + return; + + // Send mapblock of target location + v3s16 blockpos = v3s16(pos.X / MAP_BLOCKSIZE, pos.Y / MAP_BLOCKSIZE, pos.Z / MAP_BLOCKSIZE); + m_env->getGameDef()->SendBlock(m_peer_id, blockpos); + + setBasePosition(pos); + // Movement caused by this command is always valid + m_last_good_position = pos; + m_move_pool.empty(); + m_time_from_last_teleport = 0.0; + m_env->getGameDef()->SendMovePlayer(m_peer_id); +} + +void PlayerSAO::moveTo(v3f pos, bool continuous) +{ + if(isAttached()) + return; + + setBasePosition(pos); + // Movement caused by this command is always valid + m_last_good_position = pos; + m_move_pool.empty(); + m_time_from_last_teleport = 0.0; + m_env->getGameDef()->SendMovePlayer(m_peer_id); +} + +void PlayerSAO::setPlayerYaw(const float yaw) +{ + v3f rotation(0, yaw, 0); + if (m_player && yaw != m_rotation.Y) + m_player->setDirty(true); + + // Set player model yaw, not look view + UnitSAO::setRotation(rotation); +} + +void PlayerSAO::setFov(const float fov) +{ + if (m_player && fov != m_fov) + m_player->setDirty(true); + + m_fov = fov; +} + +void PlayerSAO::setWantedRange(const s16 range) +{ + if (m_player && range != m_wanted_range) + m_player->setDirty(true); + + m_wanted_range = range; +} + +void PlayerSAO::setPlayerYawAndSend(const float yaw) +{ + setPlayerYaw(yaw); + m_env->getGameDef()->SendMovePlayer(m_peer_id); +} + +void PlayerSAO::setLookPitch(const float pitch) +{ + if (m_player && pitch != m_pitch) + m_player->setDirty(true); + + m_pitch = pitch; +} + +void PlayerSAO::setLookPitchAndSend(const float pitch) +{ + setLookPitch(pitch); + m_env->getGameDef()->SendMovePlayer(m_peer_id); +} + +u16 PlayerSAO::punch(v3f dir, + const ToolCapabilities *toolcap, + ServerActiveObject *puncher, + float time_from_last_punch) +{ + if (!toolcap) + return 0; + + FATAL_ERROR_IF(!puncher, "Punch action called without SAO"); + + // No effect if PvP disabled or if immortal + if (isImmortal() || !g_settings->getBool("enable_pvp")) { + if (puncher->getType() == ACTIVEOBJECT_TYPE_PLAYER) { + // create message and add to list + sendPunchCommand(); + return 0; + } + } + + s32 old_hp = getHP(); + HitParams hitparams = getHitParams(m_armor_groups, toolcap, + time_from_last_punch); + + PlayerSAO *playersao = m_player->getPlayerSAO(); + + bool damage_handled = m_env->getScriptIface()->on_punchplayer(playersao, + puncher, time_from_last_punch, toolcap, dir, + hitparams.hp); + + if (!damage_handled) { + setHP((s32)getHP() - (s32)hitparams.hp, + PlayerHPChangeReason(PlayerHPChangeReason::PLAYER_PUNCH, puncher)); + } else { // override client prediction + if (puncher->getType() == ACTIVEOBJECT_TYPE_PLAYER) { + // create message and add to list + sendPunchCommand(); + } + } + + actionstream << puncher->getDescription() << " (id=" << puncher->getId() << + ", hp=" << puncher->getHP() << ") punched " << + getDescription() << " (id=" << m_id << ", hp=" << m_hp << + "), damage=" << (old_hp - (s32)getHP()) << + (damage_handled ? " (handled by Lua)" : "") << std::endl; + + return hitparams.wear; +} + +void PlayerSAO::setHP(s32 hp, const PlayerHPChangeReason &reason) +{ + s32 oldhp = m_hp; + + hp = rangelim(hp, 0, m_prop.hp_max); + + if (oldhp != hp) { + s32 hp_change = m_env->getScriptIface()->on_player_hpchange(this, hp - oldhp, reason); + if (hp_change == 0) + return; + + hp = rangelim(oldhp + hp_change, 0, m_prop.hp_max); + } + + if (hp < oldhp && isImmortal()) + return; + + m_hp = hp; + + // Update properties on death + if ((hp == 0) != (oldhp == 0)) + m_properties_sent = false; +} + +void PlayerSAO::setBreath(const u16 breath, bool send) +{ + if (m_player && breath != m_breath) + m_player->setDirty(true); + + m_breath = rangelim(breath, 0, m_prop.breath_max); + + if (send) + m_env->getGameDef()->SendPlayerBreath(this); +} + +Inventory *PlayerSAO::getInventory() const +{ + return m_player ? &m_player->inventory : nullptr; +} + +InventoryLocation PlayerSAO::getInventoryLocation() const +{ + InventoryLocation loc; + loc.setPlayer(m_player->getName()); + return loc; +} + +u16 PlayerSAO::getWieldIndex() const +{ + return m_player->getWieldIndex(); +} + +ItemStack PlayerSAO::getWieldedItem(ItemStack *selected, ItemStack *hand) const +{ + return m_player->getWieldedItem(selected, hand); +} + +bool PlayerSAO::setWieldedItem(const ItemStack &item) +{ + InventoryList *mlist = m_player->inventory.getList(getWieldList()); + if (mlist) { + mlist->changeItem(m_player->getWieldIndex(), item); + return true; + } + return false; +} + +void PlayerSAO::disconnected() +{ + m_peer_id = PEER_ID_INEXISTENT; + m_pending_removal = true; +} + +void PlayerSAO::unlinkPlayerSessionAndSave() +{ + assert(m_player->getPlayerSAO() == this); + m_player->setPeerId(PEER_ID_INEXISTENT); + m_env->savePlayer(m_player); + m_player->setPlayerSAO(NULL); + m_env->removePlayer(m_player); +} + +std::string PlayerSAO::getPropertyPacket() +{ + m_prop.is_visible = (true); + return generateSetPropertiesCommand(m_prop); +} + +void PlayerSAO::setMaxSpeedOverride(const v3f &vel) +{ + if (m_max_speed_override_time == 0.0f) + m_max_speed_override = vel; + else + m_max_speed_override += vel; + if (m_player) { + float accel = MYMIN(m_player->movement_acceleration_default, + m_player->movement_acceleration_air); + m_max_speed_override_time = m_max_speed_override.getLength() / accel / BS; + } +} + +bool PlayerSAO::checkMovementCheat() +{ + if (isAttached() || m_is_singleplayer || + g_settings->getBool("disable_anticheat")) { + m_last_good_position = m_base_position; + return false; + } + + bool cheated = false; + /* + Check player movements + + NOTE: Actually the server should handle player physics like the + client does and compare player's position to what is calculated + on our side. This is required when eg. players fly due to an + explosion. Altough a node-based alternative might be possible + too, and much more lightweight. + */ + + float override_max_H, override_max_V; + if (m_max_speed_override_time > 0.0f) { + override_max_H = MYMAX(fabs(m_max_speed_override.X), fabs(m_max_speed_override.Z)); + override_max_V = fabs(m_max_speed_override.Y); + } else { + override_max_H = override_max_V = 0.0f; + } + + float player_max_walk = 0; // horizontal movement + float player_max_jump = 0; // vertical upwards movement + + if (m_privs.count("fast") != 0) + player_max_walk = m_player->movement_speed_fast; // Fast speed + else + player_max_walk = m_player->movement_speed_walk; // Normal speed + player_max_walk *= m_physics_override_speed; + player_max_walk = MYMAX(player_max_walk, override_max_H); + + player_max_jump = m_player->movement_speed_jump * m_physics_override_jump; + // FIXME: Bouncy nodes cause practically unbound increase in Y speed, + // until this can be verified correctly, tolerate higher jumping speeds + player_max_jump *= 2.0; + player_max_jump = MYMAX(player_max_jump, override_max_V); + + // Don't divide by zero! + if (player_max_walk < 0.0001f) + player_max_walk = 0.0001f; + if (player_max_jump < 0.0001f) + player_max_jump = 0.0001f; + + v3f diff = (m_base_position - m_last_good_position); + float d_vert = diff.Y; + diff.Y = 0; + float d_horiz = diff.getLength(); + float required_time = d_horiz / player_max_walk; + + // FIXME: Checking downwards movement is not easily possible currently, + // the server could calculate speed differences to examine the gravity + if (d_vert > 0) { + // In certain cases (water, ladders) walking speed is applied vertically + float s = MYMAX(player_max_jump, player_max_walk); + required_time = MYMAX(required_time, d_vert / s); + } + + if (m_move_pool.grab(required_time)) { + m_last_good_position = m_base_position; + } else { + const float LAG_POOL_MIN = 5.0; + float lag_pool_max = m_env->getMaxLagEstimate() * 2.0; + lag_pool_max = MYMAX(lag_pool_max, LAG_POOL_MIN); + if (m_time_from_last_teleport > lag_pool_max) { + actionstream << "Server: " << m_player->getName() + << " moved too fast: V=" << d_vert << ", H=" << d_horiz + << "; resetting position." << std::endl; + cheated = true; + } + setBasePosition(m_last_good_position); + } + return cheated; +} + +bool PlayerSAO::getCollisionBox(aabb3f *toset) const +{ + //update collision box + toset->MinEdge = m_prop.collisionbox.MinEdge * BS; + toset->MaxEdge = m_prop.collisionbox.MaxEdge * BS; + + toset->MinEdge += m_base_position; + toset->MaxEdge += m_base_position; + return true; +} + +bool PlayerSAO::getSelectionBox(aabb3f *toset) const +{ + if (!m_prop.is_visible || !m_prop.pointable) { + return false; + } + + toset->MinEdge = m_prop.selectionbox.MinEdge * BS; + toset->MaxEdge = m_prop.selectionbox.MaxEdge * BS; + + return true; +} + +float PlayerSAO::getZoomFOV() const +{ + return m_prop.zoom_fov; +} |