mirror of
https://github.com/GeyserMC/Geyser.git
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151 lines
6.2 KiB
Java
151 lines
6.2 KiB
Java
/*
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* Copyright (c) 2019-2022 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.geyser.entity.type;
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import com.github.steveice10.mc.protocol.data.game.entity.metadata.EntityMetadata;
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import com.github.steveice10.mc.protocol.data.game.item.ItemStack;
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import org.cloudburstmc.math.vector.Vector3f;
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import org.cloudburstmc.math.vector.Vector3i;
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import org.cloudburstmc.protocol.bedrock.data.entity.EntityEventType;
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import org.cloudburstmc.protocol.bedrock.data.entity.EntityFlag;
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import org.cloudburstmc.protocol.bedrock.data.inventory.ItemData;
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import org.cloudburstmc.protocol.bedrock.packet.AddItemEntityPacket;
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import org.cloudburstmc.protocol.bedrock.packet.EntityEventPacket;
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import org.geysermc.geyser.entity.EntityDefinition;
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import org.geysermc.geyser.level.block.BlockStateValues;
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import org.geysermc.geyser.session.GeyserSession;
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import org.geysermc.geyser.translator.item.ItemTranslator;
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import java.util.UUID;
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import java.util.concurrent.CompletableFuture;
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public class ItemEntity extends ThrowableEntity {
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protected ItemData item;
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private CompletableFuture<Integer> waterLevel = CompletableFuture.completedFuture(-1);
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public ItemEntity(GeyserSession session, int entityId, long geyserId, UUID uuid, EntityDefinition<?> definition, Vector3f position, Vector3f motion, float yaw, float pitch, float headYaw) {
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super(session, entityId, geyserId, uuid, definition, position, motion, yaw, pitch, headYaw);
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}
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@Override
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public void spawnEntity() {
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if (item == null) {
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return;
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}
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valid = true;
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AddItemEntityPacket itemPacket = new AddItemEntityPacket();
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itemPacket.setRuntimeEntityId(geyserId);
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itemPacket.setUniqueEntityId(geyserId);
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itemPacket.setPosition(position.add(0d, this.definition.offset(), 0d));
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itemPacket.setMotion(motion);
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itemPacket.setFromFishing(false);
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itemPacket.setItemInHand(item);
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itemPacket.getMetadata().putFlags(this.flags);
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dirtyMetadata.apply(itemPacket.getMetadata());
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setFlagsDirty(false);
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session.sendUpstreamPacket(itemPacket);
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}
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@Override
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public void tick() {
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if (removedInVoid() || isInWater()) {
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return;
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}
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if (!isOnGround() || (motion.getX() * motion.getX() + motion.getZ() * motion.getZ()) > 0.00001) {
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float gravity = getGravity();
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motion = motion.down(gravity);
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moveAbsoluteImmediate(position.add(motion), getYaw(), getPitch(), getHeadYaw(), isOnGround(), false);
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float drag = getDrag();
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motion = motion.mul(drag, 0.98f, drag);
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}
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}
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public void setItem(EntityMetadata<ItemStack, ?> entityMetadata) {
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ItemData item = ItemTranslator.translateToBedrock(session, entityMetadata.getValue());
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if (this.item == null) {
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this.item = item;
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spawnEntity();
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} else if (item.equals(this.item, false, true, true)) {
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// Don't bother respawning the entity if items are equal
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if (this.item.getCount() != item.getCount()) {
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// Just item count updated; let's make this easy
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this.item = item;
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EntityEventPacket packet = new EntityEventPacket();
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packet.setRuntimeEntityId(geyserId);
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packet.setType(EntityEventType.UPDATE_ITEM_STACK_SIZE);
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packet.setData(this.item.getCount());
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session.sendUpstreamPacket(packet);
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}
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} else {
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this.item = item;
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despawnEntity();
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spawnEntity();
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}
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}
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@Override
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protected void moveAbsoluteImmediate(Vector3f position, float yaw, float pitch, float headYaw, boolean isOnGround, boolean teleported) {
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float offset = definition.offset();
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if (waterLevel.join() == 0) { // Item is in a full block of water
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// Move the item entity down so it doesn't float above the water
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offset = -definition.offset();
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}
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super.moveAbsoluteImmediate(position.add(0, offset, 0), 0, 0, 0, isOnGround, teleported);
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this.position = position;
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waterLevel = session.getGeyser().getWorldManager().getBlockAtAsync(session, position.getFloorX(), position.getFloorY(), position.getFloorZ())
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.thenApply(BlockStateValues::getWaterLevel);
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}
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@Override
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protected float getGravity() {
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if (getFlag(EntityFlag.HAS_GRAVITY) && !isOnGround() && !isInWater()) {
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// Gravity can change if the item is in water/lava, but
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// the server calculates the motion & position for us
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return 0.04f;
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}
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return 0;
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}
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@Override
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protected float getDrag() {
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if (isOnGround()) {
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Vector3i groundBlockPos = position.toInt().down(1);
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int blockState = session.getGeyser().getWorldManager().getBlockAt(session, groundBlockPos);
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return BlockStateValues.getSlipperiness(blockState) * 0.98f;
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}
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return 0.98f;
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}
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@Override
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protected boolean isInWater() {
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return waterLevel.join() != -1;
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}
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}
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