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Add PacketWrapper#setCancelled(boolean)

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This commit is contained in:
Nassim Jahnke 2023-02-28 21:49:08 +01:00
parent 8f97f43f12
commit 7161377794
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GPG Key ID: 6BE3B555EBC5982B
2 changed files with 73 additions and 33 deletions
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19
api/src/main/java/com/viaversion/viaversion/api/protocol/packet/PacketWrapper.java
View File

@ -300,11 +300,6 @@ public interface PacketWrapper {
*/
PacketWrapper apply(Direction direction, State state, int index, List<Protocol> pipeline) throws Exception;
/**
* Cancel this packet from sending
*/
void cancel();
/**
* Check if this packet is cancelled.
*
@ -312,6 +307,20 @@ public interface PacketWrapper {
*/
boolean isCancelled();
/**
* Cancel this packet from sending.
*/
default void cancel() {
setCancelled(true);
}
/**
* Sets the cancellation state of the packet.
*
* @param cancel whether the packet should be cancelled
*/
void setCancelled(boolean cancel);
/**
* Get the user associated with this Packet
*

87
common/src/main/java/com/viaversion/viaversion/protocol/packet/PacketWrapperImpl.java
View File

@ -30,7 +30,6 @@ import com.viaversion.viaversion.api.type.Type;
import com.viaversion.viaversion.api.type.TypeConverter;
import com.viaversion.viaversion.exception.CancelException;
import com.viaversion.viaversion.exception.InformativeException;
import com.viaversion.viaversion.util.Pair;
import com.viaversion.viaversion.util.PipelineUtil;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelFuture;
@ -45,6 +44,8 @@ import org.checkerframework.checker.nullness.qual.Nullable;
public class PacketWrapperImpl implements PacketWrapper {
private static final Protocol[] PROTOCOL_ARRAY = new Protocol[0];
private final Deque<PacketValue> readableObjects = new ArrayDeque<>();
private final List<PacketValue> packetValues = new ArrayList<>();
private final ByteBuf inputBuffer;
private final UserConnection userConnection;
private boolean send = true;
@ -53,8 +54,6 @@ public class PacketWrapperImpl implements PacketWrapper {
*/
private PacketType packetType;
private int id;
private final Deque<Pair<Type, Object>> readableObjects = new ArrayDeque<>();
private final List<Pair<Type, Object>> packetValues = new ArrayList<>();
public PacketWrapperImpl(int packetId, @Nullable ByteBuf inputBuffer, UserConnection userConnection) {
this.id = packetId;
@ -72,8 +71,10 @@ public class PacketWrapperImpl implements PacketWrapper {
@Override
public <T> T get(Type<T> type, int index) throws Exception {
int currentIndex = 0;
for (Pair<Type, Object> packetValue : packetValues) {
if (packetValue.key() != type) continue;
for (PacketValue packetValue : packetValues) {
if (packetValue.type() != type) {
continue;
}
if (currentIndex == index) {
//noinspection unchecked
return (T) packetValue.value();
@ -86,8 +87,10 @@ public class PacketWrapperImpl implements PacketWrapper {
@Override
public boolean is(Type type, int index) {
int currentIndex = 0;
for (Pair<Type, Object> packetValue : packetValues) {
if (packetValue.key() != type) continue;
for (PacketValue packetValue : packetValues) {
if (packetValue.type() != type) {
continue;
}
if (currentIndex == index) {
return true;
}
@ -99,8 +102,10 @@ public class PacketWrapperImpl implements PacketWrapper {
@Override
public boolean isReadable(Type type, int index) {
int currentIndex = 0;
for (Pair<Type, Object> packetValue : readableObjects) {
if (packetValue.key().getBaseClass() != type.getBaseClass()) continue;
for (PacketValue packetValue : readableObjects) {
if (packetValue.type().getBaseClass() != type.getBaseClass()) {
continue;
}
if (currentIndex == index) {
return true;
}
@ -113,8 +118,10 @@ public class PacketWrapperImpl implements PacketWrapper {
@Override
public <T> void set(Type<T> type, int index, T value) throws Exception {
int currentIndex = 0;
for (Pair<Type, Object> packetValue : packetValues) {
if (packetValue.key() != type) continue;
for (PacketValue packetValue : packetValues) {
if (packetValue.type() != type) {
continue;
}
if (currentIndex == index) {
packetValue.setValue(attemptTransform(type, value));
return;
@ -140,23 +147,23 @@ public class PacketWrapperImpl implements PacketWrapper {
}
}
Pair<Type, Object> read = readableObjects.poll();
Type rtype = read.key();
if (rtype == type
|| (type.getBaseClass() == rtype.getBaseClass()
&& type.getOutputClass() == rtype.getOutputClass())) {
PacketValue readValue = readableObjects.poll();
Type readType = readValue.type();
if (readType == type
|| (type.getBaseClass() == readType.getBaseClass()
&& type.getOutputClass() == readType.getOutputClass())) {
//noinspection unchecked
return (T) read.value();
} else if (rtype == Type.NOTHING) {
return (T) readValue.value();
} else if (readType == Type.NOTHING) {
return read(type); // retry
} else {
throw createInformativeException(new IOException("Unable to read type " + type.getTypeName() + ", found " + read.key().getTypeName()), type, readableObjects.size());
throw createInformativeException(new IOException("Unable to read type " + type.getTypeName() + ", found " + readValue.type().getTypeName()), type, readableObjects.size());
}
}
@Override
public <T> void write(Type<T> type, T value) {
packetValues.add(new Pair<>(type, attemptTransform(type, value)));
packetValues.add(new PacketValue(type, attemptTransform(type, value)));
}
/**
@ -207,11 +214,11 @@ public class PacketWrapperImpl implements PacketWrapper {
}
int index = 0;
for (Pair<Type, Object> packetValue : packetValues) {
for (PacketValue packetValue : packetValues) {
try {
packetValue.key().write(buffer, packetValue.value());
packetValue.type().write(buffer, packetValue.value());
} catch (Exception e) {
throw createInformativeException(e, packetValue.key(), index);
throw createInformativeException(e, packetValue.type(), index);
}
index++;
}
@ -392,13 +399,13 @@ public class PacketWrapperImpl implements PacketWrapper {
}
@Override
public void cancel() {
this.send = false;
public boolean isCancelled() {
return !this.send;
}
@Override
public boolean isCancelled() {
return !this.send;
public void setCancelled(boolean cancel) {
this.send = !cancel;
}
@Override
@ -452,7 +459,9 @@ public class PacketWrapperImpl implements PacketWrapper {
}
private void sendToServer0(Class<? extends Protocol> protocol, boolean skipCurrentPipeline, boolean currentThread) throws Exception {
if (isCancelled()) return;
if (isCancelled()) {
return;
}
try {
ByteBuf output = constructPacket(protocol, skipCurrentPipeline, Direction.SERVERBOUND);
@ -505,4 +514,26 @@ public class PacketWrapperImpl implements PacketWrapper {
", readableObjects=" + readableObjects +
'}';
}
private static final class PacketValue {
private final Type type;
private Object value;
private PacketValue(Type type, @Nullable Object value) {
this.type = type;
this.value = value;
}
public Type type() {
return type;
}
public @Nullable Object value() {
return value;
}
public void setValue(@Nullable Object value) {
this.value = value;
}
}
}