forked from GeyserMC/Geyser
252 lines
13 KiB
Java
252 lines
13 KiB
Java
/*
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* Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*/
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package org.geysermc.connector.network.translators.bedrock.entity.player;
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import com.github.steveice10.mc.protocol.packet.ingame.client.player.ClientPlayerPositionPacket;
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import com.github.steveice10.mc.protocol.packet.ingame.client.player.ClientPlayerPositionRotationPacket;
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import com.github.steveice10.mc.protocol.packet.ingame.client.player.ClientPlayerRotationPacket;
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import com.github.steveice10.packetlib.packet.Packet;
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import com.nukkitx.math.vector.Vector3d;
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import com.nukkitx.math.vector.Vector3f;
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import com.nukkitx.protocol.bedrock.packet.MoveEntityAbsolutePacket;
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import com.nukkitx.protocol.bedrock.packet.MovePlayerPacket;
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import com.nukkitx.protocol.bedrock.packet.SetEntityDataPacket;
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import org.geysermc.connector.common.ChatColor;
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import org.geysermc.connector.entity.player.PlayerEntity;
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import org.geysermc.connector.entity.type.EntityType;
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import org.geysermc.connector.network.session.GeyserSession;
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import org.geysermc.connector.network.translators.PacketTranslator;
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import org.geysermc.connector.network.translators.Translator;
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import org.geysermc.connector.network.translators.collision.CollisionManager;
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import java.util.concurrent.TimeUnit;
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@Translator(packet = MovePlayerPacket.class)
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public class BedrockMovePlayerTranslator extends PacketTranslator<MovePlayerPacket> {
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@Override
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public void translate(MovePlayerPacket packet, GeyserSession session) {
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PlayerEntity entity = session.getPlayerEntity();
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if (!session.isSpawned() || session.getPendingDimSwitches().get() > 0) return;
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if (!session.getUpstream().isInitialized()) {
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MoveEntityAbsolutePacket moveEntityBack = new MoveEntityAbsolutePacket();
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moveEntityBack.setRuntimeEntityId(entity.getGeyserId());
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moveEntityBack.setPosition(entity.getPosition());
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moveEntityBack.setRotation(entity.getBedrockRotation());
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moveEntityBack.setTeleported(true);
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moveEntityBack.setOnGround(true);
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session.sendUpstreamPacketImmediately(moveEntityBack);
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return;
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}
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if (session.getMovementSendIfIdle() != null) {
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session.getMovementSendIfIdle().cancel(true);
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}
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if (session.confirmTeleport(packet.getPosition().toDouble().sub(0, EntityType.PLAYER.getOffset(), 0))) {
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// head yaw, pitch, head yaw
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Vector3f rotation = Vector3f.from(packet.getRotation().getY(), packet.getRotation().getX(), packet.getRotation().getY());
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boolean positionChanged = !entity.getPosition().equals(packet.getPosition());
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boolean rotationChanged = !entity.getRotation().equals(rotation);
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// If only the pitch and yaw changed
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// This isn't needed, but it makes the packets closer to vanilla
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// It also means you can't "lag back" while only looking, in theory
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if (!positionChanged && rotationChanged) {
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ClientPlayerRotationPacket playerRotationPacket = new ClientPlayerRotationPacket(
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packet.isOnGround(), packet.getRotation().getY(), packet.getRotation().getX());
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entity.setRotation(rotation);
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entity.setOnGround(packet.isOnGround());
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session.sendDownstreamPacket(playerRotationPacket);
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} else {
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Vector3d position = adjustBedrockPosition(session, packet.getPosition(), packet.isOnGround());
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if (position != null) { // A null return value cancels the packet
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if (isValidMove(session, packet.getMode(), entity.getPosition(), packet.getPosition())) {
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Packet movePacket;
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if (rotationChanged) {
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// Send rotation updates as well
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movePacket = new ClientPlayerPositionRotationPacket(packet.isOnGround(), position.getX(), position.getY(), position.getZ(),
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packet.getRotation().getY(), packet.getRotation().getX());
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entity.setRotation(rotation);
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} else {
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// Rotation did not change; don't send an update with rotation
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movePacket = new ClientPlayerPositionPacket(packet.isOnGround(), position.getX(), position.getY(), position.getZ());
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}
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// Compare positions here for void floor fix below before the player's position variable is set to the packet position
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boolean notMovingUp = entity.getPosition().getY() >= packet.getPosition().getY();
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entity.setPosition(packet.getPosition(), false);
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entity.setOnGround(packet.isOnGround());
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// Send final movement changes
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session.sendDownstreamPacket(movePacket);
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if (notMovingUp) {
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int floorY = position.getFloorY();
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if (floorY <= -38 && floorY >= -40) {
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// Work around there being a floor at Y -40 and teleport the player below it
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// Moving from below Y -40 to above the void floor works fine
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//TODO: This will need to be changed for 1.17
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entity.setPosition(entity.getPosition().sub(0, 4f, 0));
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MovePlayerPacket movePlayerPacket = new MovePlayerPacket();
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movePlayerPacket.setRuntimeEntityId(entity.getGeyserId());
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movePlayerPacket.setPosition(entity.getPosition());
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movePlayerPacket.setRotation(entity.getBedrockRotation());
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movePlayerPacket.setMode(MovePlayerPacket.Mode.TELEPORT);
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movePlayerPacket.setTeleportationCause(MovePlayerPacket.TeleportationCause.BEHAVIOR);
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session.sendUpstreamPacket(movePlayerPacket);
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}
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}
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} else {
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// Not a valid move
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session.getConnector().getLogger().debug("Recalculating position...");
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recalculatePosition(session);
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}
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}
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}
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}
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// Move parrots to match if applicable
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if (entity.getLeftParrot() != null) {
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entity.getLeftParrot().moveAbsolute(session, entity.getPosition(), entity.getRotation(), true, false);
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}
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if (entity.getRightParrot() != null) {
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entity.getRightParrot().moveAbsolute(session, entity.getPosition(), entity.getRotation(), true, false);
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}
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// Schedule a position send loop if the player is idle
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session.setMovementSendIfIdle(session.getConnector().getGeneralThreadPool().schedule(() -> sendPositionIfIdle(session),
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3, TimeUnit.SECONDS));
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}
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public boolean isValidMove(GeyserSession session, MovePlayerPacket.Mode mode, Vector3f currentPosition, Vector3f newPosition) {
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if (mode != MovePlayerPacket.Mode.NORMAL)
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return true;
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double xRange = newPosition.getX() - currentPosition.getX();
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double yRange = newPosition.getY() - currentPosition.getY();
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double zRange = newPosition.getZ() - currentPosition.getZ();
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if (xRange < 0)
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xRange = -xRange;
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if (yRange < 0)
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yRange = -yRange;
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if (zRange < 0)
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zRange = -zRange;
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if ((xRange + yRange + zRange) > 100) {
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session.getConnector().getLogger().debug(ChatColor.RED + session.getName() + " moved too quickly." +
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" current position: " + currentPosition + ", new position: " + newPosition);
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return false;
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}
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return true;
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}
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/**
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* Adjust the Bedrock position before sending to the Java server to account for inaccuracies in movement between
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* the two versions.
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*
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* @param session the current GeyserSession
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* @param bedrockPosition the current Bedrock position of the client
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* @param onGround whether the Bedrock player is on the ground
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* @return the position to send to the Java server, or null to cancel sending the packet
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*/
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private Vector3d adjustBedrockPosition(GeyserSession session, Vector3f bedrockPosition, boolean onGround) {
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// We need to parse the float as a string since casting a float to a double causes us to
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// lose precision and thus, causes players to get stuck when walking near walls
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double javaY = bedrockPosition.getY() - EntityType.PLAYER.getOffset();
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Vector3d position = Vector3d.from(Double.parseDouble(Float.toString(bedrockPosition.getX())), javaY,
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Double.parseDouble(Float.toString(bedrockPosition.getZ())));
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if (session.getConnector().getConfig().isCacheChunks()) {
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// With chunk caching, we can do some proper collision checks
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CollisionManager collisionManager = session.getCollisionManager();
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collisionManager.updatePlayerBoundingBox(position);
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// Correct player position
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if (!collisionManager.correctPlayerPosition()) {
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// Cancel the movement if it needs to be cancelled
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recalculatePosition(session);
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return null;
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}
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position = Vector3d.from(collisionManager.getPlayerBoundingBox().getMiddleX(),
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collisionManager.getPlayerBoundingBox().getMiddleY() - (collisionManager.getPlayerBoundingBox().getSizeY() / 2),
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collisionManager.getPlayerBoundingBox().getMiddleZ());
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} else {
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// When chunk caching is off, we have to rely on this
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// It rounds the Y position up to the nearest 0.5
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// This snaps players to snap to the top of stairs and slabs like on Java Edition
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// However, it causes issues such as the player floating on carpets
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if (onGround) javaY = Math.ceil(javaY * 2) / 2;
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position = position.up(javaY - position.getY());
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}
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return position;
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}
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// TODO: This makes the player look upwards for some reason, rotation values must be wrong
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public void recalculatePosition(GeyserSession session) {
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PlayerEntity entity = session.getPlayerEntity();
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// Gravity might need to be reset...
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SetEntityDataPacket entityDataPacket = new SetEntityDataPacket();
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entityDataPacket.setRuntimeEntityId(entity.getGeyserId());
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entityDataPacket.getMetadata().putAll(entity.getMetadata());
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session.sendUpstreamPacket(entityDataPacket);
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MovePlayerPacket movePlayerPacket = new MovePlayerPacket();
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movePlayerPacket.setRuntimeEntityId(entity.getGeyserId());
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movePlayerPacket.setPosition(entity.getPosition());
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movePlayerPacket.setRotation(entity.getBedrockRotation());
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movePlayerPacket.setMode(MovePlayerPacket.Mode.NORMAL);
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session.sendUpstreamPacket(movePlayerPacket);
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}
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private void sendPositionIfIdle(GeyserSession session) {
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if (session.isClosed()) return;
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PlayerEntity entity = session.getPlayerEntity();
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// Recalculate in case something else changed position
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Vector3d position = adjustBedrockPosition(session, entity.getPosition(), entity.isOnGround());
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// A null return value cancels the packet
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if (position != null) {
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ClientPlayerPositionPacket packet = new ClientPlayerPositionPacket(session.getPlayerEntity().isOnGround(),
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position.getX(), position.getY(), position.getZ());
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session.sendDownstreamPacket(packet);
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}
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session.setMovementSendIfIdle(session.getConnector().getGeneralThreadPool().schedule(() -> sendPositionIfIdle(session),
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3, TimeUnit.SECONDS));
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}
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}
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