Start working on particles

common/src/main/java/us/myles/ViaVersion/api/minecraft/metadata/types/MetaType1_13.java

@@ -4,6 +4,7 @@ import lombok.Getter;
 import lombok.RequiredArgsConstructor;
 import us.myles.ViaVersion.api.minecraft.metadata.MetaType;
 import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.ProtocolSnapshotTo1_12_2;
 
 @RequiredArgsConstructor
 @Getter
@@ -23,7 +24,7 @@ public enum MetaType1_13 implements MetaType {
     OptUUID(12, Type.OPTIONAL_UUID),
     BlockID(13, Type.VAR_INT),
     NBTTag(14, Type.NBT),
-    UNKNOWN(15, null), // TODO do research
+    PARTICLE(15, ProtocolSnapshotTo1_12_2.PARTICLE_TYPE),
     Discontinued(99, null);
 
     private final int typeID;

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/ProtocolSnapshotTo1_12_2.java

@@ -21,9 +21,11 @@ import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.providers.Painting
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.storage.BlockStorage;
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.storage.EntityTracker;
 import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.storage.TabCompleteTracker;
+import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.type.Particle1_13Type;
 
 // Development of 1.13 support!
 public class ProtocolSnapshotTo1_12_2 extends Protocol {
+    public static final Particle1_13Type PARTICLE_TYPE = new Particle1_13Type();
 
     static {
         MappingData.init();

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/data/Particle.java

@@ -0,0 +1,25 @@
+package us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.data;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import us.myles.ViaVersion.api.type.Type;
+
+import java.util.Set;
+import java.util.TreeSet;
+
+@Data
+public class Particle {
+    private int id;
+    private Set<ParticleData> arguments = new TreeSet<>();
+
+    public Particle(int id) {
+        this.id = id;
+    }
+
+    @lombok.Data
+    @AllArgsConstructor
+    public static class ParticleData {
+        private Type type;
+        private Object value;
+    }
+}

common/src/main/java/us/myles/ViaVersion/protocols/protocolsnapshotto1_12_2/type/Particle1_13Type.java

@@ -0,0 +1,45 @@
+package us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.type;
+
+import io.netty.buffer.ByteBuf;
+import us.myles.ViaVersion.api.type.Type;
+import us.myles.ViaVersion.protocols.protocolsnapshotto1_12_2.data.Particle;
+
+// TODO make future proof
+public class Particle1_13Type extends Type<Particle> {
+    public Particle1_13Type() {
+        super("Particle", Particle.class);
+    }
+
+    @Override
+    public void write(ByteBuf buffer, Particle object) throws Exception {
+        Type.VAR_INT.write(buffer, object.getId());
+        for (Particle.ParticleData data : object.getArguments())
+            data.getType().write(buffer, data.getValue());
+    }
+
+    @Override
+    public Particle read(ByteBuf buffer) throws Exception {
+        int type = Type.VAR_INT.read(buffer);
+        Particle particle = new Particle(type);
+
+        switch (type) {
+            // Block / Falling Dust /
+            case 3:
+            case 20:
+                particle.getArguments().add(new Particle.ParticleData(Type.VAR_INT, Type.VAR_INT.read(buffer))); // Flat Block
+                break;
+            // Dust
+            case 11:
+                particle.getArguments().add(new Particle.ParticleData(Type.FLOAT, Type.FLOAT.read(buffer))); // Red 0 - 1
+                particle.getArguments().add(new Particle.ParticleData(Type.FLOAT, Type.FLOAT.read(buffer))); // Green 0 - 1
+                particle.getArguments().add(new Particle.ParticleData(Type.FLOAT, Type.FLOAT.read(buffer))); // Blue 0 - 1
+                particle.getArguments().add(new Particle.ParticleData(Type.FLOAT, Type.FLOAT.read(buffer)));// Scale 0.01 - 4
+                break;
+            // Item
+            case 27:
+                particle.getArguments().add(new Particle.ParticleData(Type.FLAT_ITEM, Type.FLAT_ITEM.read(buffer))); // Flat item
+                break;
+        }
+        return particle;
+    }
+}