add: broadcast when player is afk

src/main/java/io/ib67/sfcraft/SFCraftInitializer.java

@@ -3,6 +3,7 @@ package io.ib67.sfcraft;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.inject.*;
+import io.ib67.sfcraft.module.*;
 import io.ib67.sfcraft.module.chat.ChatPingModule;
 import io.ib67.sfcraft.module.chat.ChatSendLocModule;
 import io.ib67.sfcraft.module.randomevt.LongNightModule;
@@ -12,10 +13,6 @@ import io.ib67.sfcraft.init.GuiceModInitializer;
 import io.ib67.sfcraft.geoip.GeoIPService;
 import io.ib67.sfcraft.geoip.MaxMindGeoIPService;
 import io.ib67.sfcraft.inject.MinecraftServerSupplier;
-import io.ib67.sfcraft.module.MotdModule;
-import io.ib67.sfcraft.module.OfflineExemptModule;
-import io.ib67.sfcraft.module.PlayLimitModule;
-import io.ib67.sfcraft.module.WelcomeModule;
 import io.ib67.sfcraft.registry.event.RandomEventRegistry;
 import io.ib67.sfcraft.module.command.BackModule;
 import io.ib67.sfcraft.module.command.ManagementModule;
@@ -46,7 +43,7 @@ public class SFCraftInitializer extends GuiceModInitializer {
         registerFeature(PlayLimitModule.class);
         registerFeature(BackModule.class);
         registerFeature(ManagementModule.class);
-
+        registerFeature(AFKModule.class);
         registerFeature(ChatPingModule.class);
         registerFeature(ChatSendLocModule.class);
         registerFeature(LongNightModule.class);

src/main/java/io/ib67/sfcraft/callback/SFCallbacks.java

@@ -8,6 +8,7 @@ import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.network.ClientConnection;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.ServerMetadata;
+import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.text.Text;
 import net.minecraft.util.Unit;
 import net.minecraft.util.math.BlockPos;
@@ -28,6 +29,12 @@ public interface SFCallbacks {
             l -> (pl, damageSource) -> forEach(l, i -> i.onPlayerDeath(pl, damageSource)));
     Event<ServerMotdCallback> MOTD = EventFactory.createArrayBacked(ServerMotdCallback.class,
             l -> (s, c) -> first(l, t -> t.onMotd(s, c)));
+    Event<PlayerIdlingCallback> PLAYER_IDLE = EventFactory.createArrayBacked(PlayerIdlingCallback.class,
+            l -> (p, a) -> forEach(l, i -> i.onSwitchIdle(p, a)));
+
+    interface PlayerIdlingCallback {
+        void onSwitchIdle(ServerPlayerEntity player, boolean afk);
+    }
 
     interface ServerMotdCallback {
         ServerMetadata onMotd(MinecraftServer server, ClientConnection connection);

src/main/java/io/ib67/sfcraft/mixin/server/PlayerEntityMixin.java

@@ -8,6 +8,7 @@ import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.util.Unit;
 import net.minecraft.util.math.BlockPos;
 import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
@@ -15,6 +16,9 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 @Mixin(ServerPlayerEntity.class)
 public class PlayerEntityMixin {
+    @Shadow
+    private long lastActionTime;
+
     @Inject(method = "onDeath", at = @At("TAIL"))
     public void onDeath(DamageSource damageSource, CallbackInfo ci) {
         SFCallbacks.PLAYER_DEATH.invoker().onPlayerDeath((ServerPlayerEntity) (Object) this, damageSource);
@@ -27,4 +31,11 @@ public class PlayerEntityMixin {
             cir.setReturnValue(result);
         }
     }
+
+    @Inject(method = "updateLastActionTime", at = @At("HEAD"))
+    public void leaveAFK(CallbackInfo ci) {
+        if (lastActionTime == Long.MAX_VALUE) {
+            SFCallbacks.PLAYER_IDLE.invoker().onSwitchIdle((ServerPlayerEntity) (Object) this, false);
+        }
+    }
 }

src/main/java/io/ib67/sfcraft/mixin/server/ServerPlayNetworkHandlerMixin.java

@@ -1,10 +1,13 @@
 package io.ib67.sfcraft.mixin.server;
 
 import io.ib67.sfcraft.SFCraft;
+import io.ib67.sfcraft.callback.SFCallbacks;
+import io.ib67.sfcraft.mixin.server.bridge.ServerPlayerBridge;
 import io.ib67.sfcraft.registry.chat.SimpleMessageDecorator;
 import net.minecraft.network.message.MessageDecorator;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.network.ServerPlayNetworkHandler;
+import net.minecraft.text.Text;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.*;
 
@@ -18,4 +21,10 @@ public abstract class ServerPlayNetworkHandlerMixin {
     public MessageDecorator getMessageDecorator(MinecraftServer instance) {
         return SFCraft.getInjector().getInstance(SimpleMessageDecorator.class);
     }
+
+    @Redirect(method = "tick", at = @At(value = "INVOKE", target = "Lnet/minecraft/server/network/ServerPlayNetworkHandler;disconnect(Lnet/minecraft/text/Text;)V", ordinal = 2))
+    public void onPlayerIdling(ServerPlayNetworkHandler instance, Text text) {
+        ((ServerPlayerBridge) instance.player).setLastActionTime(Long.MAX_VALUE);
+        SFCallbacks.PLAYER_IDLE.invoker().onSwitchIdle(instance.player,true);
+    }
 }

src/main/java/io/ib67/sfcraft/mixin/server/bridge/ServerPlayerBridge.java

@@ -0,0 +1,11 @@
+package io.ib67.sfcraft.mixin.server.bridge;
+
+import net.minecraft.server.network.ServerPlayerEntity;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Accessor;
+
+@Mixin(ServerPlayerEntity.class)
+public interface ServerPlayerBridge {
+    @Accessor
+    void setLastActionTime(long time);
+}

src/main/java/io/ib67/sfcraft/module/AFKModule.java

@@ -0,0 +1,28 @@
+package io.ib67.sfcraft.module;
+
+import io.ib67.sfcraft.ServerModule;
+import io.ib67.sfcraft.callback.SFCallbacks;
+import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.text.Text;
+import net.minecraft.util.Colors;
+
+public class AFKModule extends ServerModule {
+    @Override
+    public void onInitialize() {
+        SFCallbacks.PLAYER_IDLE.register(this::onAFK);
+    }
+
+    private void onAFK(ServerPlayerEntity player, boolean afk) {
+        if(afk){
+            player.server.getPlayerManager().broadcast(
+                    Text.literal(" * " + player.getName().getLiteralString() + " 正在挂机.").withColor(Colors.LIGHT_GRAY),
+                    false
+            );
+        }else{
+            player.server.getPlayerManager().broadcast(
+                    Text.literal(" * " + player.getName().getLiteralString() + " 回来了.").withColor(Colors.LIGHT_GRAY),
+                    false
+            );
+        }
+    }
+}

src/main/resources/sfcraft.mixins.json

@@ -8,9 +8,10 @@
   "client": [
   ],
   "server": [
+    "server.bridge.ServerWorldBridge",
+    "server.bridge.ServerPlayerBridge",
     "server.MinecraftServerMixin",
     "server.ServerPlayNetworkHandlerMixin",
-    "server.bridge.ServerWorldBridge",
     "server.SleepManagerMixin",
     "server.ServerWorldMixin",
     "server.AbstractFurnaceBlockMixin",