Geyser/connector/src/main/java/org/geysermc/connector/entity/FireworkEntity.java

/*
 * Copyright (c) 2019-2021 GeyserMC. http://geysermc.org
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @author GeyserMC
 * @link https://github.com/GeyserMC/Geyser
 */

package org.geysermc.connector.entity;

import com.github.steveice10.mc.protocol.data.game.entity.metadata.EntityMetadata;
import com.github.steveice10.mc.protocol.data.game.entity.metadata.ItemStack;
import com.github.steveice10.opennbt.tag.builtin.CompoundTag;
import com.github.steveice10.opennbt.tag.builtin.ListTag;
import com.github.steveice10.opennbt.tag.builtin.Tag;
import com.nukkitx.math.vector.Vector3f;
import com.nukkitx.nbt.NbtMap;
import com.nukkitx.nbt.NbtMapBuilder;
import com.nukkitx.nbt.NbtType;
import com.nukkitx.protocol.bedrock.data.entity.EntityData;
import com.nukkitx.protocol.bedrock.packet.SetEntityMotionPacket;
import org.geysermc.connector.entity.player.PlayerEntity;
import org.geysermc.connector.entity.type.EntityType;
import org.geysermc.connector.network.session.GeyserSession;
import org.geysermc.connector.utils.FireworkColor;
import org.geysermc.connector.utils.MathUtils;
import org.geysermc.floodgate.util.DeviceOs;

import java.util.ArrayList;
import java.util.List;
import java.util.OptionalInt;

public class FireworkEntity extends Entity {

    public FireworkEntity(long entityId, long geyserId, EntityType entityType, Vector3f position, Vector3f motion, Vector3f rotation) {
        super(entityId, geyserId, entityType, position, motion, rotation);
    }

    @Override
    public void updateBedrockMetadata(EntityMetadata entityMetadata, GeyserSession session) {
        if (entityMetadata.getId() == 8) {
            ItemStack item = (ItemStack) entityMetadata.getValue();
            if (item == null) {
                return;
            }
            CompoundTag tag = item.getNbt();

            if (tag == null) {
                return;
            }

            // TODO: Remove once Mojang fixes bugs with fireworks crashing clients on these specific devices.
            // https://bugs.mojang.com/browse/MCPE-89115
            if (session.getClientData().getDeviceOs() == DeviceOs.XBOX
                    || session.getClientData().getDeviceOs() == DeviceOs.PS4) {
                return;
            }

            CompoundTag fireworks = tag.get("Fireworks");
            if (fireworks == null) {
                // Thank you Mineplex very cool
                return;
            }

            NbtMapBuilder fireworksBuilder = NbtMap.builder();
            if (fireworks.get("Flight") != null) {
                fireworksBuilder.putByte("Flight", MathUtils.convertByte(fireworks.get("Flight").getValue()));
            }

            List<NbtMap> explosions = new ArrayList<>();
            if (fireworks.get("Explosions") != null) {
                for (Tag effect : ((ListTag) fireworks.get("Explosions")).getValue()) {
                    CompoundTag effectData = (CompoundTag) effect;
                    NbtMapBuilder effectBuilder = NbtMap.builder();

                    if (effectData.get("Type") != null) {
                        effectBuilder.putByte("FireworkType", MathUtils.convertByte(effectData.get("Type").getValue()));
                    }

                    if (effectData.get("Colors") != null) {
                        int[] oldColors = (int[]) effectData.get("Colors").getValue();
                        byte[] colors = new byte[oldColors.length];

                        int i = 0;
                        for (int color : oldColors) {
                            colors[i++] = FireworkColor.fromJavaRGB(color);
                        }

                        effectBuilder.putByteArray("FireworkColor", colors);
                    }

                    if (effectData.get("FadeColors") != null) {
                        int[] oldColors = (int[]) effectData.get("FadeColors").getValue();
                        byte[] colors = new byte[oldColors.length];

                        int i = 0;
                        for (int color : oldColors) {
                            colors[i++] = FireworkColor.fromJavaRGB(color);
                        }

                        effectBuilder.putByteArray("FireworkFade", colors);
                    }

                    if (effectData.get("Trail") != null) {
                        effectBuilder.putByte("FireworkTrail", MathUtils.convertByte(effectData.get("Trail").getValue()));
                    }

                    if (effectData.get("Flicker") != null) {
                        effectBuilder.putByte("FireworkFlicker", MathUtils.convertByte(effectData.get("Flicker").getValue()));
                    }

                    explosions.add(effectBuilder.build());
                }
            }

            fireworksBuilder.putList("Explosions", NbtType.COMPOUND, explosions);

            NbtMapBuilder builder = NbtMap.builder();
            builder.put("Fireworks", fireworksBuilder.build());
            metadata.put(EntityData.DISPLAY_ITEM, builder.build());
        } else if (entityMetadata.getId() == 9) {
            OptionalInt optional = (OptionalInt) entityMetadata.getValue();
            // Checks if the firework has an entity ID (used when a player is gliding)
            // and checks to make sure the player that is gliding is the one getting sent the packet
            // or else every player near the gliding player will boost too.
            if (optional.isPresent() && optional.getAsInt() == session.getPlayerEntity().getEntityId()) {
                PlayerEntity entity = session.getPlayerEntity();
                float yaw = entity.getRotation().getX();
                float pitch = entity.getRotation().getY();
                // Uses math from NukkitX
                entity.setMotion(Vector3f.from(
                        -Math.sin(Math.toRadians(yaw)) * Math.cos(Math.toRadians(pitch)) * 2,
                        -Math.sin(Math.toRadians(pitch)) * 2,
                        Math.cos(Math.toRadians(yaw)) * Math.cos(Math.toRadians(pitch)) * 2));
                // Need to update the EntityMotionPacket or else the player won't boost
                SetEntityMotionPacket entityMotionPacket = new SetEntityMotionPacket();
                entityMotionPacket.setRuntimeEntityId(entity.getGeyserId());
                entityMotionPacket.setMotion(entity.getMotion());

                session.sendUpstreamPacket(entityMotionPacket);
            }
        }

        super.updateBedrockMetadata(entityMetadata, session);
    }
}