Use "PacketBattlePing" for "pings"

More efficient than using "PacketBattleInfo" every 4 seconds which is
heftier than a single battleID.

Currently "PacketBattlePing" is used to cause the client to show the
BattleGUI if it is not open.

src/main/java/com/burnedkirby/TurnBasedMinecraft/common/Battle.java

@@ -2,6 +2,7 @@ package com.burnedkirby.TurnBasedMinecraft.common;
 
 import com.burnedkirby.TurnBasedMinecraft.common.networking.PacketBattleInfo;
 import com.burnedkirby.TurnBasedMinecraft.common.networking.PacketBattleMessage;
+import com.burnedkirby.TurnBasedMinecraft.common.networking.PacketBattlePing;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.server.level.ServerPlayer;
 import net.minecraft.world.InteractionHand;
@@ -49,7 +50,7 @@ public class Battle {
 
     private ResourceKey<Level> dimension;
 
-    private long infoNanos;
+    private long pingTimerNanos;
 
     public enum State {
         DECISION(0),
@@ -124,7 +125,7 @@ public class Battle {
         undecidedCount = new AtomicInteger(0);
         random = new Random();
         this.dimension = dimension;
-        infoNanos = 0;
+        pingTimerNanos = 0;
         if (sideA != null) {
             for (Entity e : sideA) {
                 EntityInfo entityInfo;
@@ -456,6 +457,16 @@ public class Battle {
         }
     }
 
+    protected void notifyPlayersBattlePing() {
+        if (!isServer) {
+            return;
+        }
+        PacketBattlePing pingPacket = new PacketBattlePing(getId());
+        for (Combatant p : players.values()) {
+            TurnBasedMinecraftMod.getHandler().send(pingPacket, PacketDistributor.PLAYER.with((ServerPlayer)p.entity));
+        }
+    }
+
     protected void sendMessageToAllPlayers(PacketBattleMessage.MessageType type, int from, int to, int amount) {
         sendMessageToAllPlayers(type, from, to, amount, new String());
     }
@@ -654,10 +665,10 @@ public class Battle {
     }
 
     private boolean update(final long dt) {
-        infoNanos += dt;
-        if (infoNanos >= 4000000000L) {
-            infoNanos = 0;
-            notifyPlayersBattleInfo();
+        pingTimerNanos += dt;
+        if (pingTimerNanos >= 4000000000L) {
+            pingTimerNanos = 0;
+            notifyPlayersBattlePing();
         }
         if (battleEnded) {
             Collection<Combatant> combatants = new ArrayList<Combatant>();

src/main/java/com/burnedkirby/TurnBasedMinecraft/common/TurnBasedMinecraftMod.java

@@ -39,7 +39,7 @@ import org.apache.logging.log4j.Logger;
 public class TurnBasedMinecraftMod {
     public static final String MODID = "com_burnedkirby_turnbasedminecraft";
     public static final String NAME = "Turn Based Minecraft Mod";
-    public static final String VERSION = "1.26.0";
+    public static final String VERSION = "1.26.1";
     public static final String CONFIG_FILENAME = "TBM_Config.toml";
     public static final String DEFAULT_CONFIG_FILENAME = "TBM_Config_DEFAULT.toml";
     public static final String CONFIG_DIRECTORY = "config/TurnBasedMinecraft/";
@@ -122,6 +122,11 @@ public class TurnBasedMinecraftMod {
             .decoder(new PacketClientGui.Decoder())
             .consumerNetworkThread(new PacketClientGui.Consumer())
             .add();
+        HANDLER.messageBuilder(PacketBattlePing.class, NetworkDirection.PLAY_TO_CLIENT)
+            .encoder(new PacketBattlePing.Encoder())
+            .decoder(new PacketBattlePing.Decoder())
+            .consumerNetworkThread(new PacketBattlePing.Consumer())
+            .add();
 
         // register event handler(s)
         MinecraftForge.EVENT_BUS.register(new AttackEventHandler());

src/main/java/com/burnedkirby/TurnBasedMinecraft/common/networking/PacketBattlePing.java

@@ -0,0 +1,53 @@
+package com.burnedkirby.TurnBasedMinecraft.common.networking;
+
+import com.burnedkirby.TurnBasedMinecraft.common.TurnBasedMinecraftMod;
+import net.minecraft.network.RegistryFriendlyByteBuf;
+import net.minecraftforge.event.network.CustomPayloadEvent;
+
+import java.util.function.BiConsumer;
+import java.util.function.Function;
+
+public class PacketBattlePing {
+    private int battleID;
+
+    public PacketBattlePing() {
+        battleID = 0;
+    }
+
+    public PacketBattlePing(int battleID) {
+        this.battleID = battleID;
+    }
+
+    public static class Encoder implements BiConsumer<PacketBattlePing, RegistryFriendlyByteBuf> {
+        public Encoder() {}
+
+        @Override
+        public void accept(PacketBattlePing pkt, RegistryFriendlyByteBuf buf) {
+            buf.writeInt(pkt.battleID);
+        }
+    }
+
+    public static class Decoder implements Function<RegistryFriendlyByteBuf, PacketBattlePing> {
+        public Decoder() {}
+
+        @Override
+        public PacketBattlePing apply(RegistryFriendlyByteBuf buf) {
+            return new PacketBattlePing(buf.readInt());
+        }
+    }
+
+    public static class Consumer implements BiConsumer<PacketBattlePing, CustomPayloadEvent.Context> {
+        public Consumer() {}
+
+        @Override
+        public void accept(PacketBattlePing pkt, CustomPayloadEvent.Context ctx) {
+            ctx.enqueueWork(() -> {
+                if (TurnBasedMinecraftMod.proxy.getLocalBattle() == null) {
+                    TurnBasedMinecraftMod.proxy.createLocalBattle(pkt.battleID);
+                }
+                TurnBasedMinecraftMod.proxy.setBattleGuiAsGui();
+            });
+            ctx.setPacketHandled(true);
+        }
+    }
+}