BlockParticleSet.java
package com.hypixel.hytale.protocol;
import com.hypixel.hytale.protocol.io.PacketIO;
import com.hypixel.hytale.protocol.io.ProtocolException;
import com.hypixel.hytale.protocol.io.ValidationResult;
import com.hypixel.hytale.protocol.io.VarInt;
import io.netty.buffer.ByteBuf;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
public class BlockParticleSet {
public static final int NULLABLE_BIT_FIELD_SIZE = 1;
public static final int FIXED_BLOCK_SIZE = 32;
public static final int VARIABLE_FIELD_COUNT = 2;
public static final int VARIABLE_BLOCK_START = 40;
public static final int MAX_SIZE = 1677721600;
@Nullable
public String id;
@Nullable
public Color color;
public float scale;
@Nullable
public Vector3f positionOffset;
@Nullable
public Direction rotationOffset;
@Nullable
public Map<BlockParticleEvent, String> particleSystemIds;
public BlockParticleSet() {
}
public BlockParticleSet(@Nullable String id, @Nullable Color color, float scale, @Nullable Vector3f positionOffset, @Nullable Direction rotationOffset, @Nullable Map<BlockParticleEvent, String> particleSystemIds) {
this.id = id;
this.color = color;
this.scale = scale;
this.positionOffset = positionOffset;
this.rotationOffset = rotationOffset;
this.particleSystemIds = particleSystemIds;
}
public BlockParticleSet(@Nonnull BlockParticleSet other) {
this.id = other.id;
this.color = other.color;
this.scale = other.scale;
this.positionOffset = other.positionOffset;
this.rotationOffset = other.rotationOffset;
this.particleSystemIds = other.particleSystemIds;
}
@Nonnull
public static BlockParticleSet deserialize(@Nonnull ByteBuf buf, int offset) {
BlockParticleSet obj = new BlockParticleSet();
byte nullBits = buf.getByte(offset);
if ((nullBits & 2) != 0) {
obj.color = Color.deserialize(buf, offset + 1);
}
obj.scale = buf.getFloatLE(offset + 4);
if ((nullBits & 4) != 0) {
obj.positionOffset = Vector3f.deserialize(buf, offset + 8);
}
if ((nullBits & 8) != 0) {
obj.rotationOffset = Direction.deserialize(buf, offset + 20);
}
if ((nullBits & 1) != 0) {
int varPos0 = offset + 40 + buf.getIntLE(offset + 32);
int idLen = VarInt.peek(buf, varPos0);
if (idLen < 0) {
throw ProtocolException.negativeLength("Id", idLen);
}
if (idLen > 4096000) {
throw ProtocolException.stringTooLong("Id", idLen, 4096000);
}
obj.id = PacketIO.readVarString(buf, varPos0, PacketIO.UTF8);
}
if ((nullBits & 16) != 0) {
int varPos1 = offset + 40 + buf.getIntLE(offset + 36);
int particleSystemIdsCount = VarInt.peek(buf, varPos1);
if (particleSystemIdsCount < 0) {
throw ProtocolException.negativeLength("ParticleSystemIds", particleSystemIdsCount);
}
if (particleSystemIdsCount > 4096000) {
throw ProtocolException.dictionaryTooLarge("ParticleSystemIds", particleSystemIdsCount, 4096000);
}
int varIntLen = VarInt.length(buf, varPos1);
obj.particleSystemIds = new HashMap(particleSystemIdsCount);
int dictPos = varPos1 + varIntLen;
for(int i = 0; i < particleSystemIdsCount; ++i) {
BlockParticleEvent key = BlockParticleEvent.fromValue(buf.getByte(dictPos));
++dictPos;
int valLen = VarInt.peek(buf, dictPos);
if (valLen < 0) {
throw ProtocolException.negativeLength("val", valLen);
}
if (valLen > 4096000) {
throw ProtocolException.stringTooLong("val", valLen, 4096000);
}
int valVarLen = VarInt.length(buf, dictPos);
String val = PacketIO.readVarString(buf, dictPos);
dictPos += valVarLen + valLen;
if (obj.particleSystemIds.put(key, val) != null) {
throw ProtocolException.duplicateKey("particleSystemIds", key);
}
}
}
return obj;
}
public static int computeBytesConsumed(@Nonnull ByteBuf buf, int offset) {
byte nullBits = buf.getByte(offset);
int maxEnd = 40;
if ((nullBits & 1) != 0) {
int fieldOffset0 = buf.getIntLE(offset + 32);
int pos0 = offset + 40 + fieldOffset0;
int sl = VarInt.peek(buf, pos0);
pos0 += VarInt.length(buf, pos0) + sl;
if (pos0 - offset > maxEnd) {
maxEnd = pos0 - offset;
}
}
if ((nullBits & 16) != 0) {
int fieldOffset1 = buf.getIntLE(offset + 36);
int pos1 = offset + 40 + fieldOffset1;
int dictLen = VarInt.peek(buf, pos1);
pos1 += VarInt.length(buf, pos1);
for(int i = 0; i < dictLen; ++i) {
++pos1;
int sl = VarInt.peek(buf, pos1);
pos1 += VarInt.length(buf, pos1) + sl;
}
if (pos1 - offset > maxEnd) {
maxEnd = pos1 - offset;
}
}
return maxEnd;
}
public void serialize(@Nonnull ByteBuf buf) {
int startPos = buf.writerIndex();
byte nullBits = 0;
if (this.id != null) {
nullBits = (byte)(nullBits | 1);
}
if (this.color != null) {
nullBits = (byte)(nullBits | 2);
}
if (this.positionOffset != null) {
nullBits = (byte)(nullBits | 4);
}
if (this.rotationOffset != null) {
nullBits = (byte)(nullBits | 8);
}
if (this.particleSystemIds != null) {
nullBits = (byte)(nullBits | 16);
}
buf.writeByte(nullBits);
if (this.color != null) {
this.color.serialize(buf);
} else {
buf.writeZero(3);
}
buf.writeFloatLE(this.scale);
if (this.positionOffset != null) {
this.positionOffset.serialize(buf);
} else {
buf.writeZero(12);
}
if (this.rotationOffset != null) {
this.rotationOffset.serialize(buf);
} else {
buf.writeZero(12);
}
int idOffsetSlot = buf.writerIndex();
buf.writeIntLE(0);
int particleSystemIdsOffsetSlot = buf.writerIndex();
buf.writeIntLE(0);
int varBlockStart = buf.writerIndex();
if (this.id != null) {
buf.setIntLE(idOffsetSlot, buf.writerIndex() - varBlockStart);
PacketIO.writeVarString(buf, this.id, 4096000);
} else {
buf.setIntLE(idOffsetSlot, -1);
}
if (this.particleSystemIds != null) {
buf.setIntLE(particleSystemIdsOffsetSlot, buf.writerIndex() - varBlockStart);
if (this.particleSystemIds.size() > 4096000) {
throw ProtocolException.dictionaryTooLarge("ParticleSystemIds", this.particleSystemIds.size(), 4096000);
}
VarInt.write(buf, this.particleSystemIds.size());
for(Map.Entry<BlockParticleEvent, String> e : this.particleSystemIds.entrySet()) {
buf.writeByte(((BlockParticleEvent)e.getKey()).getValue());
PacketIO.writeVarString(buf, (String)e.getValue(), 4096000);
}
} else {
buf.setIntLE(particleSystemIdsOffsetSlot, -1);
}
}
public int computeSize() {
int size = 40;
if (this.id != null) {
size += PacketIO.stringSize(this.id);
}
if (this.particleSystemIds != null) {
int particleSystemIdsSize = 0;
for(Map.Entry<BlockParticleEvent, String> kvp : this.particleSystemIds.entrySet()) {
particleSystemIdsSize += 1 + PacketIO.stringSize((String)kvp.getValue());
}
size += VarInt.size(this.particleSystemIds.size()) + particleSystemIdsSize;
}
return size;
}
public static ValidationResult validateStructure(@Nonnull ByteBuf buffer, int offset) {
if (buffer.readableBytes() - offset < 40) {
return ValidationResult.error("Buffer too small: expected at least 40 bytes");
} else {
byte nullBits = buffer.getByte(offset);
if ((nullBits & 1) != 0) {
int idOffset = buffer.getIntLE(offset + 32);
if (idOffset < 0) {
return ValidationResult.error("Invalid offset for Id");
}
int pos = offset + 40 + idOffset;
if (pos >= buffer.writerIndex()) {
return ValidationResult.error("Offset out of bounds for Id");
}
int idLen = VarInt.peek(buffer, pos);
if (idLen < 0) {
return ValidationResult.error("Invalid string length for Id");
}
if (idLen > 4096000) {
return ValidationResult.error("Id exceeds max length 4096000");
}
pos += VarInt.length(buffer, pos);
pos += idLen;
if (pos > buffer.writerIndex()) {
return ValidationResult.error("Buffer overflow reading Id");
}
}
if ((nullBits & 16) != 0) {
int particleSystemIdsOffset = buffer.getIntLE(offset + 36);
if (particleSystemIdsOffset < 0) {
return ValidationResult.error("Invalid offset for ParticleSystemIds");
}
int pos = offset + 40 + particleSystemIdsOffset;
if (pos >= buffer.writerIndex()) {
return ValidationResult.error("Offset out of bounds for ParticleSystemIds");
}
int particleSystemIdsCount = VarInt.peek(buffer, pos);
if (particleSystemIdsCount < 0) {
return ValidationResult.error("Invalid dictionary count for ParticleSystemIds");
}
if (particleSystemIdsCount > 4096000) {
return ValidationResult.error("ParticleSystemIds exceeds max length 4096000");
}
pos += VarInt.length(buffer, pos);
for(int i = 0; i < particleSystemIdsCount; ++i) {
++pos;
int valueLen = VarInt.peek(buffer, pos);
if (valueLen < 0) {
return ValidationResult.error("Invalid string length for value");
}
if (valueLen > 4096000) {
return ValidationResult.error("value exceeds max length 4096000");
}
pos += VarInt.length(buffer, pos);
pos += valueLen;
if (pos > buffer.writerIndex()) {
return ValidationResult.error("Buffer overflow reading value");
}
}
}
return ValidationResult.OK;
}
}
public BlockParticleSet clone() {
BlockParticleSet copy = new BlockParticleSet();
copy.id = this.id;
copy.color = this.color != null ? this.color.clone() : null;
copy.scale = this.scale;
copy.positionOffset = this.positionOffset != null ? this.positionOffset.clone() : null;
copy.rotationOffset = this.rotationOffset != null ? this.rotationOffset.clone() : null;
copy.particleSystemIds = this.particleSystemIds != null ? new HashMap(this.particleSystemIds) : null;
return copy;
}
public boolean equals(Object obj) {
if (this == obj) {
return true;
} else if (!(obj instanceof BlockParticleSet)) {
return false;
} else {
BlockParticleSet other = (BlockParticleSet)obj;
return Objects.equals(this.id, other.id) && Objects.equals(this.color, other.color) && this.scale == other.scale && Objects.equals(this.positionOffset, other.positionOffset) && Objects.equals(this.rotationOffset, other.rotationOffset) && Objects.equals(this.particleSystemIds, other.particleSystemIds);
}
}
public int hashCode() {
return Objects.hash(new Object[]{this.id, this.color, this.scale, this.positionOffset, this.rotationOffset, this.particleSystemIds});
}
}