cn.nukkit.network.protocol.InventoryTransactionPacket Maven / Gradle / Ivy
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A Minecraft Bedrock Edition server software implementation made in Java from scratch which supports all new features.
package cn.nukkit.network.protocol;
import cn.nukkit.api.Since;
import cn.nukkit.inventory.transaction.data.ReleaseItemData;
import cn.nukkit.inventory.transaction.data.TransactionData;
import cn.nukkit.inventory.transaction.data.UseItemData;
import cn.nukkit.inventory.transaction.data.UseItemOnEntityData;
import cn.nukkit.network.protocol.types.NetworkInventoryAction;
import lombok.ToString;
import java.util.ArrayDeque;
import java.util.Collection;
@ToString
public class InventoryTransactionPacket extends DataPacket {
public static final int TYPE_NORMAL = 0;
public static final int TYPE_MISMATCH = 1;
public static final int TYPE_USE_ITEM = 2;
public static final int TYPE_USE_ITEM_ON_ENTITY = 3;
public static final int TYPE_RELEASE_ITEM = 4;
public static final int USE_ITEM_ACTION_CLICK_BLOCK = 0;
public static final int USE_ITEM_ACTION_CLICK_AIR = 1;
public static final int USE_ITEM_ACTION_BREAK_BLOCK = 2;
public static final int RELEASE_ITEM_ACTION_RELEASE = 0; //bow shoot
public static final int RELEASE_ITEM_ACTION_CONSUME = 1; //eat food, drink potion
public static final int USE_ITEM_ON_ENTITY_ACTION_INTERACT = 0;
public static final int USE_ITEM_ON_ENTITY_ACTION_ATTACK = 1;
public static final int ACTION_MAGIC_SLOT_DROP_ITEM = 0;
public static final int ACTION_MAGIC_SLOT_PICKUP_ITEM = 1;
public static final int ACTION_MAGIC_SLOT_CREATIVE_DELETE_ITEM = 0;
public static final int ACTION_MAGIC_SLOT_CREATIVE_CREATE_ITEM = 1;
public int transactionType;
public NetworkInventoryAction[] actions;
public TransactionData transactionData;
@Since("1.3.0.0-PN") public boolean hasNetworkIds;
@Since("1.3.0.0-PN") public int legacyRequestId;
/**
* NOTE: THESE FIELDS DO NOT EXIST IN THE PROTOCOL, it's merely used for convenience for us to easily
* determine whether we're doing a crafting or enchanting transaction.
*/
public boolean isCraftingPart = false;
@Since("1.3.1.0-PN") public boolean isEnchantingPart = false;
@Override
public byte pid() {
return ProtocolInfo.INVENTORY_TRANSACTION_PACKET;
}
@Override
public void encode() {
this.reset();
this.putVarInt(this.legacyRequestId);
//TODO legacySlot array
this.putUnsignedVarInt(this.transactionType);
this.putBoolean(this.hasNetworkIds);
this.putUnsignedVarInt(this.actions.length);
for (NetworkInventoryAction action : this.actions) {
action.write(this);
}
switch (this.transactionType) {
case TYPE_NORMAL:
case TYPE_MISMATCH:
break;
case TYPE_USE_ITEM:
UseItemData useItemData = (UseItemData) this.transactionData;
this.putUnsignedVarInt(useItemData.actionType);
this.putBlockVector3(useItemData.blockPos);
this.putBlockFace(useItemData.face);
this.putVarInt(useItemData.hotbarSlot);
this.putSlot(useItemData.itemInHand);
this.putVector3f(useItemData.playerPos.asVector3f());
this.putVector3f(useItemData.clickPos);
this.putUnsignedVarInt(useItemData.blockRuntimeId);
break;
case TYPE_USE_ITEM_ON_ENTITY:
UseItemOnEntityData useItemOnEntityData = (UseItemOnEntityData) this.transactionData;
this.putEntityRuntimeId(useItemOnEntityData.entityRuntimeId);
this.putUnsignedVarInt(useItemOnEntityData.actionType);
this.putVarInt(useItemOnEntityData.hotbarSlot);
this.putSlot(useItemOnEntityData.itemInHand);
this.putVector3f(useItemOnEntityData.playerPos.asVector3f());
this.putVector3f(useItemOnEntityData.clickPos.asVector3f());
break;
case TYPE_RELEASE_ITEM:
ReleaseItemData releaseItemData = (ReleaseItemData) this.transactionData;
this.putUnsignedVarInt(releaseItemData.actionType);
this.putVarInt(releaseItemData.hotbarSlot);
this.putSlot(releaseItemData.itemInHand);
this.putVector3f(releaseItemData.headRot.asVector3f());
break;
default:
throw new RuntimeException("Unknown transaction type " + this.transactionType);
}
}
@Override
public void decode() {
this.legacyRequestId = this.getVarInt();
if (legacyRequestId < -1 && (legacyRequestId & 1) == 0) {
int length = (int) this.getUnsignedVarInt();
for (int i = 0; i < length; i++) {
this.getByte();
int bufLen = (int) this.getUnsignedVarInt();
this.get(bufLen);
}
}
this.transactionType = (int) this.getUnsignedVarInt();
this.hasNetworkIds = this.getBoolean();
int length = (int) this.getUnsignedVarInt();
Collection actions = new ArrayDeque<>();
for (int i = 0; i < length; i++) {
actions.add(new NetworkInventoryAction().read(this));
}
this.actions = actions.toArray(NetworkInventoryAction.EMPTY_ARRAY);
switch (this.transactionType) {
case TYPE_NORMAL:
case TYPE_MISMATCH:
//Regular ComplexInventoryTransaction doesn't read any extra data
break;
case TYPE_USE_ITEM:
UseItemData itemData = new UseItemData();
itemData.actionType = (int) this.getUnsignedVarInt();
itemData.blockPos = this.getBlockVector3();
itemData.face = this.getBlockFace();
itemData.hotbarSlot = this.getVarInt();
itemData.itemInHand = this.getSlot();
itemData.playerPos = this.getVector3f().asVector3();
itemData.clickPos = this.getVector3f();
itemData.blockRuntimeId = (int) this.getUnsignedVarInt();
this.transactionData = itemData;
break;
case TYPE_USE_ITEM_ON_ENTITY:
UseItemOnEntityData useItemOnEntityData = new UseItemOnEntityData();
useItemOnEntityData.entityRuntimeId = this.getEntityRuntimeId();
useItemOnEntityData.actionType = (int) this.getUnsignedVarInt();
useItemOnEntityData.hotbarSlot = this.getVarInt();
useItemOnEntityData.itemInHand = this.getSlot();
useItemOnEntityData.playerPos = this.getVector3f().asVector3();
useItemOnEntityData.clickPos = this.getVector3f().asVector3();
this.transactionData = useItemOnEntityData;
break;
case TYPE_RELEASE_ITEM:
ReleaseItemData releaseItemData = new ReleaseItemData();
releaseItemData.actionType = (int) getUnsignedVarInt();
releaseItemData.hotbarSlot = getVarInt();
releaseItemData.itemInHand = getSlot();
releaseItemData.headRot = this.getVector3f().asVector3();
this.transactionData = releaseItemData;
break;
default:
throw new RuntimeException("Unknown transaction type " + this.transactionType);
}
}
}