feat: machine status events

src/main/java/dev/galacticraft/machinelib/api/block/entity/ConfiguredBlockEntity.java

@@ -32,6 +32,7 @@
 import dev.galacticraft.machinelib.api.util.BlockFace;
 import dev.galacticraft.machinelib.impl.Constant;
 import dev.galacticraft.machinelib.impl.network.s2c.BaseMachineUpdatePayload;
+import dev.galacticraft.machinelib.impl.network.s2c.MachineStatusUpdatePayload;
 import dev.galacticraft.machinelib.impl.network.s2c.SideConfigurationUpdatePayload;
 import net.fabricmc.fabric.api.blockview.v2.RenderDataBlockEntity;
 import net.minecraft.core.BlockPos;
@@ -329,8 +330,12 @@ private class InternalMachineState extends MachineState {
         @Override
         public void setStatus(@Nullable MachineStatus status) {
             if (this.status != status) {
+                MachineStatus oldStatus = this.status;
                 this.status = status;
                 ConfiguredBlockEntity.this.setChanged();
+                if (ConfiguredBlockEntity.this.level != null && !ConfiguredBlockEntity.this.level.isClientSide) {
+                    ConfiguredBlockEntity.this.broadcastToPlayers(new MachineStatusUpdatePayload(ConfiguredBlockEntity.this.worldPosition, status, oldStatus));
+                }
             }
         }
 

src/main/java/dev/galacticraft/machinelib/api/machine/MachineStatus.java

@@ -28,6 +28,7 @@
 import net.minecraft.network.chat.Component;
 import net.minecraft.network.chat.ComponentSerialization;
 import net.minecraft.network.chat.Style;
+import net.minecraft.network.codec.StreamCodec;
 import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -38,6 +39,8 @@
  * @see MachineStatuses
  */
 public interface MachineStatus {
+    public static final StreamCodec<RegistryFriendlyByteBuf, @Nullable MachineStatus> STREAM_CODEC = StreamCodec.ofMember(MachineStatus::writePacket, MachineStatus::readPacket);
+
     /**
      * Creates a new machine status.
      *

src/main/java/dev/galacticraft/machinelib/client/api/event/MachineStatusEvents.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2021-2025 Team Galacticraft
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package dev.galacticraft.machinelib.client.api.event;
+
+import dev.galacticraft.machinelib.api.machine.MachineStatus;
+import net.fabricmc.fabric.api.event.Event;
+import net.fabricmc.fabric.api.event.EventFactory;
+import net.minecraft.core.BlockPos;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.player.LocalPlayer;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Events related to the statuses of machines.
+ */
+public interface MachineStatusEvents {
+    /**
+     * An event that is called on the client-side when the {@link MachineStatus} of a {@link dev.galacticraft.machinelib.api.block.entity.ConfiguredBlockEntity} changes.
+     */
+    Event<MachineStatusChanged> MACHINE_STATUS_CHANGED = EventFactory.createArrayBacked(MachineStatusChanged.class, callbacks -> (minecraft, player, pos, status, oldStatus) -> {
+        for (MachineStatusChanged callback : callbacks)
+            callback.onMachineStatusChanged(minecraft, player, pos, status, oldStatus);
+    });
+
+    @FunctionalInterface
+    interface MachineStatusChanged {
+        /**
+         * Called on the client-side after the {@link MachineStatus} of a {@link dev.galacticraft.machinelib.api.block.entity.ConfiguredBlockEntity} has changed.
+         */
+        void onMachineStatusChanged(Minecraft minecraft, LocalPlayer player, BlockPos pos, @Nullable MachineStatus status, @Nullable MachineStatus oldStatus);
+    }
+}

src/main/java/dev/galacticraft/machinelib/impl/network/MachineLibPackets.java

@@ -27,6 +27,7 @@
 import dev.galacticraft.machinelib.impl.network.c2s.SideConfigurationClickPayload;
 import dev.galacticraft.machinelib.impl.network.c2s.TankInteractionPayload;
 import dev.galacticraft.machinelib.impl.network.s2c.BaseMachineUpdatePayload;
+import dev.galacticraft.machinelib.impl.network.s2c.MachineStatusUpdatePayload;
 import dev.galacticraft.machinelib.impl.network.s2c.MenuSyncPayload;
 import dev.galacticraft.machinelib.impl.network.s2c.SideConfigurationUpdatePayload;
 import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking;
@@ -43,6 +44,7 @@ public static void registerServer() {
 
     public static void registerClient() {
         ClientPlayNetworking.registerGlobalReceiver(BaseMachineUpdatePayload.TYPE, BaseMachineUpdatePayload::apply);
+        ClientPlayNetworking.registerGlobalReceiver(MachineStatusUpdatePayload.TYPE, MachineStatusUpdatePayload::apply);
         ClientPlayNetworking.registerGlobalReceiver(SideConfigurationUpdatePayload.TYPE, SideConfigurationUpdatePayload::apply);
         ClientPlayNetworking.registerGlobalReceiver(MenuSyncPayload.TYPE, MenuSyncPayload::apply);
     }
@@ -57,6 +59,7 @@ public static void registerChannels() {
         // s2c
         PayloadTypeRegistry.playS2C().register(BaseMachineUpdatePayload.TYPE, BaseMachineUpdatePayload.CODEC);
         PayloadTypeRegistry.playS2C().register(SideConfigurationUpdatePayload.TYPE, SideConfigurationUpdatePayload.CODEC);
+        PayloadTypeRegistry.playS2C().register(MachineStatusUpdatePayload.TYPE, MachineStatusUpdatePayload.CODEC);
         PayloadTypeRegistry.playS2C().register(MenuSyncPayload.TYPE, MenuSyncPayload.CODEC);
     }
 }

src/main/java/dev/galacticraft/machinelib/impl/network/s2c/MachineStatusUpdatePayload.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2021-2025 Team Galacticraft
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package dev.galacticraft.machinelib.impl.network.s2c;
+
+import dev.galacticraft.machinelib.api.machine.MachineStatus;
+import dev.galacticraft.machinelib.client.api.event.MachineStatusEvents;
+import dev.galacticraft.machinelib.impl.Constant;
+import net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking;
+import net.minecraft.core.BlockPos;
+import net.minecraft.network.RegistryFriendlyByteBuf;
+import net.minecraft.network.codec.StreamCodec;
+import net.minecraft.network.protocol.common.custom.CustomPacketPayload;
+import org.jetbrains.annotations.Nullable;
+
+public record MachineStatusUpdatePayload(BlockPos pos, @Nullable MachineStatus status, @Nullable MachineStatus oldStatus) implements CustomPacketPayload {
+    public static final Type<MachineStatusUpdatePayload> TYPE = new Type<>(Constant.id("status_update"));
+    public static final StreamCodec<RegistryFriendlyByteBuf, MachineStatusUpdatePayload> CODEC = StreamCodec.composite(
+            BlockPos.STREAM_CODEC, p -> p.pos,
+            MachineStatus.STREAM_CODEC, p -> p.status,
+            MachineStatus.STREAM_CODEC, p -> p.oldStatus,
+            MachineStatusUpdatePayload::new
+    );
+
+    @Override
+    public Type<? extends CustomPacketPayload> type() {
+        return TYPE;
+    }
+
+    public void apply(ClientPlayNetworking.Context context) {
+        MachineStatusEvents.MACHINE_STATUS_CHANGED.invoker().onMachineStatusChanged(context.client(), context.player(), this.pos, this.status, this.oldStatus);
+    }
+}