Client-server syncing (#295)

* Sync carpet settings

* Sync tick rate

src/main/java/carpet/helpers/ClientNetworkHandler.java

@@ -0,0 +1,59 @@
+package carpet.helpers;
+
+import carpet.CarpetServer;
+import carpet.CarpetSettings;
+import carpet.settings.ParsedRule;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.nbt.Tag;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.PacketByteBuf;
+
+public class ClientNetworkHandler
+{
+    public static void handleData(Identifier channel, PacketByteBuf data)
+    {
+        if (CarpetServer.CARPET_CHANNEL.equals(channel) && data != null)
+        {
+            int id = data.readVarInt();
+            
+            if (id == 1)
+                setOnJoinInfo(data);
+            else if (id == 2)
+                updateRule(data);
+            else if (id == 3)
+                updateTickRateClient(data);
+        }
+    }
+    
+    private static void setOnJoinInfo(PacketByteBuf data)
+    {
+        CompoundTag compound = data.readCompoundTag();
+        if (compound == null) return;
+        
+        TickSpeed.tickrate(compound.getFloat("Tickrate"));
+        
+        ListTag rulesList = compound.getList("rules", 10);
+        for (Tag tag : rulesList)
+        {
+            CompoundTag ruleNBT = (CompoundTag) tag;
+            String rule = ruleNBT.getString("rule");
+            String value = ruleNBT.getString("value");
+            CarpetServer.settingsManager.getRule(rule).set(null, value);
+        }
+    }
+    
+    private static void updateRule(PacketByteBuf data)
+    {
+        String rule = data.readString();
+        String newValue = data.readString();
+        CarpetServer.settingsManager.getRule(rule).set(null, newValue);
+    }
+    
+    private static void updateTickRateClient(PacketByteBuf data)
+    {
+        float rate = data.readFloat();
+        TickSpeed.tickrate(rate);
+    }
+}

src/main/java/carpet/helpers/ServerNetworkHandler.java

@@ -0,0 +1,66 @@
+package carpet.helpers;
+
+import carpet.CarpetServer;
+import carpet.CarpetSettings;
+import carpet.settings.ParsedRule;
+import io.netty.buffer.Unpooled;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.network.packet.s2c.play.CustomPayloadS2CPacket;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.command.ServerCommandSource;
+import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.util.PacketByteBuf;
+
+public class ServerNetworkHandler
+{
+    public static void onPlayerJoin(ServerPlayerEntity playerEntity)
+    {
+        CompoundTag data = new CompoundTag();
+        
+        data.putFloat("Tickrate", TickSpeed.tickrate);
+        
+        ListTag rulesList = new ListTag();
+        for (ParsedRule<?> rule : CarpetServer.settingsManager.getRules())
+        {
+            CompoundTag ruleNBT = new CompoundTag();
+            
+            ruleNBT.putString("rule" ,rule.name);
+            ruleNBT.putString("value", rule.getAsString());
+            ruleNBT.putString("default", rule.defaultAsString);
+            rulesList.add(ruleNBT);
+        }
+        data.put("rules", rulesList);
+        PacketByteBuf packetBuf = new PacketByteBuf(Unpooled.buffer());
+        packetBuf.writeVarInt(1);
+        packetBuf.writeCompoundTag(data);
+        playerEntity.networkHandler.sendPacket(new CustomPayloadS2CPacket(CarpetServer.CARPET_CHANNEL, packetBuf));
+    }
+    
+    public static void sendUpdateToClient(String rule, String newValue, ServerCommandSource source)
+    {
+        PacketByteBuf data = new PacketByteBuf(Unpooled.buffer());
+        
+        data.writeVarInt(2);
+        data.writeString(rule);
+        data.writeString(newValue);
+        for (ServerPlayerEntity player : source.getMinecraftServer().getPlayerManager().getPlayerList())
+        {
+            player.networkHandler.sendPacket(new CustomPayloadS2CPacket(CarpetServer.CARPET_CHANNEL, data));
+        }
+    }
+    
+    public static void sendTickRateToPlayers(float rate)
+    {
+        PacketByteBuf data = new PacketByteBuf(Unpooled.buffer());
+        data.writeVarInt(3);
+        data.writeFloat(rate);
+        if (CarpetServer.minecraft_server != null)
+        {
+            for (ServerPlayerEntity player : CarpetServer.minecraft_server.getPlayerManager().getPlayerList())
+            {
+                player.networkHandler.sendPacket(new CustomPayloadS2CPacket(CarpetServer.CARPET_CHANNEL, data));
+            }
+        }
+    }
+}

src/main/java/carpet/helpers/TickSpeed.java

@@ -221,6 +221,7 @@ public class TickSpeed
 	            }
 	        }
         }
+        ServerNetworkHandler.sendTickRateToPlayers(tickrate);
     }
     
     public static BiConsumer<String, Float> addTickrateListener(String modId, BiConsumer<String, Float> tickrateListener)