Apply Age celestial angles

src/main/java/net/dnorberg/rivencraft/Rivencraft.java

@@ -9,6 +9,7 @@ import net.dnorberg.rivencraft.registry.ModBlocks;
 import net.dnorberg.rivencraft.registry.ModBlockEntities;
 import net.dnorberg.rivencraft.registry.ModBiomeSources;
 import net.dnorberg.rivencraft.event.BookStandConversionHandler;
+import net.dnorberg.rivencraft.event.AgeCelestialAngleSync;
 import net.dnorberg.rivencraft.network.ModNetworking;
 import net.dnorberg.rivencraft.config.RivencraftConfig;
 import net.dnorberg.rivencraft.config.RivencraftClientConfig;
@@ -40,6 +41,8 @@ public final class Rivencraft {
         ModCreativeTabs.register(modEventBus);
         NeoForge.EVENT_BUS.addListener(BookStandConversionHandler::onRightClickBlock);
         NeoForge.EVENT_BUS.addListener(AgeWeatherService::onLevelTickPost);
+        NeoForge.EVENT_BUS.addListener(AgeCelestialAngleSync::onPlayerLoggedIn);
+        NeoForge.EVENT_BUS.addListener(AgeCelestialAngleSync::onPlayerChangedDimension);
         LOGGER.info("Initializing Rivencraft");
     }
 }

src/main/java/net/dnorberg/rivencraft/client/ClientAgeCelestialAngles.java

@@ -0,0 +1,24 @@
+package net.dnorberg.rivencraft.client;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import net.dnorberg.rivencraft.network.AgeCelestialAnglePayload;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.world.level.Level;
+import net.neoforged.neoforge.network.handling.IPayloadContext;
+
+/** Client cache used by both the active world and remote preview renderers. */
+public final class ClientAgeCelestialAngles {
+    private static final Map<ResourceKey<Level>, Float> ANGLES = new ConcurrentHashMap<>();
+
+    private ClientAgeCelestialAngles() {
+    }
+
+    public static void handle(AgeCelestialAnglePayload payload, IPayloadContext context) {
+        ANGLES.put(payload.dimension(), payload.angle());
+    }
+
+    public static float get(ResourceKey<Level> dimension) {
+        return ANGLES.getOrDefault(dimension, 0.0F);
+    }
+}

src/main/java/net/dnorberg/rivencraft/event/AgeCelestialAngleSync.java

@@ -0,0 +1,43 @@
+package net.dnorberg.rivencraft.event;
+
+import net.dnorberg.rivencraft.book.AgeDefinition;
+import net.dnorberg.rivencraft.book.AgeDimensionService;
+import net.dnorberg.rivencraft.book.AgeRegistrySavedData;
+import net.dnorberg.rivencraft.network.AgeCelestialAnglePayload;
+import net.minecraft.server.level.ServerPlayer;
+import net.neoforged.neoforge.event.entity.player.PlayerEvent;
+import net.neoforged.neoforge.network.PacketDistributor;
+import net.neoforged.neoforge.network.registration.NetworkRegistry;
+
+/** Sends saved celestial angles when a client joins or enters an Age. */
+public final class AgeCelestialAngleSync {
+    private AgeCelestialAngleSync() {
+    }
+
+    public static void onPlayerLoggedIn(PlayerEvent.PlayerLoggedInEvent event) {
+        if (!(event.getEntity() instanceof ServerPlayer player)) {
+            return;
+        }
+        for (AgeDefinition age : AgeRegistrySavedData.get(player.serverLevel()).definitions()) {
+            send(player, age);
+        }
+    }
+
+    public static void onPlayerChangedDimension(PlayerEvent.PlayerChangedDimensionEvent event) {
+        if (!(event.getEntity() instanceof ServerPlayer player)) {
+            return;
+        }
+        AgeRegistrySavedData.get(player.serverLevel()).definitions().stream()
+                .filter(age -> AgeDimensionService.dimensionKey(age).equals(event.getTo()))
+                .findFirst()
+                .ifPresent(age -> send(player, age));
+    }
+
+    public static void send(ServerPlayer player, AgeDefinition age) {
+        if (!NetworkRegistry.hasChannel(player.connection, AgeCelestialAnglePayload.TYPE.id())) {
+            return;
+        }
+        PacketDistributor.sendToPlayer(player, new AgeCelestialAnglePayload(
+                AgeDimensionService.dimensionKey(age), age.traits().celestialAngle()));
+    }
+}

src/main/java/net/dnorberg/rivencraft/mixin/client/LevelRendererMixin.java

@@ -0,0 +1,31 @@
+package net.dnorberg.rivencraft.mixin.client;
+
+import com.mojang.math.Axis;
+import net.dnorberg.rivencraft.client.ClientAgeCelestialAngles;
+import net.minecraft.client.multiplayer.ClientLevel;
+import net.minecraft.client.renderer.LevelRenderer;
+import org.joml.Quaternionf;
+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.Redirect;
+
+/** Tilts the vanilla sun, moon, and star plane by each Age's saved angle. */
+@Mixin(LevelRenderer.class)
+public abstract class LevelRendererMixin {
+    @Shadow
+    private ClientLevel level;
+
+    @Redirect(
+            method = "renderSky",
+            at = @At(
+                    value = "INVOKE",
+                    target = "Lcom/mojang/math/Axis;rotationDegrees(F)Lorg/joml/Quaternionf;",
+                    ordinal = 3
+            )
+    )
+    private Quaternionf rivencraft$rotateCelestialPlane(Axis axis, float degrees) {
+        float angle = ClientAgeCelestialAngles.get(level.dimension());
+        return new Quaternionf(Axis.ZP.rotationDegrees(angle)).mul(axis.rotationDegrees(degrees));
+    }
+}

src/main/java/net/dnorberg/rivencraft/network/AgeCelestialAnglePayload.java

@@ -0,0 +1,32 @@
+package net.dnorberg.rivencraft.network;
+
+import net.dnorberg.rivencraft.Rivencraft;
+import net.minecraft.core.registries.Registries;
+import net.minecraft.network.RegistryFriendlyByteBuf;
+import net.minecraft.network.codec.StreamCodec;
+import net.minecraft.network.protocol.common.custom.CustomPacketPayload;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.level.Level;
+
+/** Synchronizes an Age's saved celestial-plane rotation to clients. */
+public record AgeCelestialAnglePayload(ResourceKey<Level> dimension, float angle)
+        implements CustomPacketPayload {
+    public static final Type<AgeCelestialAnglePayload> TYPE = new Type<>(
+            ResourceLocation.fromNamespaceAndPath(Rivencraft.MOD_ID, "age_celestial_angle")
+    );
+    public static final StreamCodec<RegistryFriendlyByteBuf, AgeCelestialAnglePayload> STREAM_CODEC =
+            StreamCodec.of(
+                    (buffer, payload) -> {
+                        buffer.writeResourceKey(payload.dimension());
+                        buffer.writeFloat(payload.angle());
+                    },
+                    buffer -> new AgeCelestialAnglePayload(
+                            buffer.readResourceKey(Registries.DIMENSION), buffer.readFloat())
+            );
+
+    @Override
+    public Type<? extends CustomPacketPayload> type() {
+        return TYPE;
+    }
+}

src/main/java/net/dnorberg/rivencraft/network/ModNetworking.java

@@ -8,6 +8,8 @@ import net.dnorberg.rivencraft.book.AgeDimensionService;
 import net.dnorberg.rivencraft.block.entity.BookStandBlockEntity;
 import net.dnorberg.rivencraft.client.ClientLinkPreviewHandler;
 import net.dnorberg.rivencraft.client.ClientBookInteractionHandler;
+import net.dnorberg.rivencraft.client.ClientAgeCelestialAngles;
+import net.dnorberg.rivencraft.event.AgeCelestialAngleSync;
 import net.dnorberg.rivencraft.item.DescriptiveBookItem;
 import net.dnorberg.rivencraft.item.LinkingBookItem;
 import net.dnorberg.rivencraft.registry.ModDataComponents;
@@ -46,7 +48,7 @@ public final class ModNetworking {
     }
 
     public static void register(RegisterPayloadHandlersEvent event) {
-        PayloadRegistrar registrar = event.registrar("8");
+        PayloadRegistrar registrar = event.registrar("9");
         registrar.playToServer(RequestDescriptiveBookScreenPayload.TYPE, RequestDescriptiveBookScreenPayload.STREAM_CODEC,
                 ModNetworking::requestDescriptiveBookScreen);
         registrar.playToClient(OpenDescriptiveBookScreenPayload.TYPE, OpenDescriptiveBookScreenPayload.STREAM_CODEC,
@@ -64,6 +66,8 @@ public final class ModNetworking {
                 (payload, context) -> releaseLinkPreview(context));
         registrar.playToClient(LinkPreviewPayload.TYPE, LinkPreviewPayload.STREAM_CODEC,
                 ClientLinkPreviewHandler::handle);
+        registrar.playToClient(AgeCelestialAnglePayload.TYPE, AgeCelestialAnglePayload.STREAM_CODEC,
+                ClientAgeCelestialAngles::handle);
     }
 
     private static void requestDescriptiveBookScreen(RequestDescriptiveBookScreenPayload payload, IPayloadContext context) {
@@ -222,6 +226,11 @@ public final class ModNetworking {
             return;
         }
 
+        AgeRegistrySavedData.get(player.serverLevel()).definitions().stream()
+                .filter(age -> AgeDimensionService.dimensionKey(age).equals(target.location().dimension()))
+                .findFirst()
+                .ifPresent(age -> AgeCelestialAngleSync.send(player, age));
+
         ServerLevel level = player.getServer().getLevel(target.location().dimension());
         if (level == null) {
             return;

src/main/resources/rivencraft.mixins.json

@@ -0,0 +1,12 @@
+{
+  "required": true,
+  "minVersion": "0.8",
+  "package": "net.dnorberg.rivencraft.mixin",
+  "compatibilityLevel": "JAVA_21",
+  "client": [
+    "client.LevelRendererMixin"
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  }
+}

src/main/templates/META-INF/neoforge.mods.toml

@@ -50,8 +50,8 @@ A spiritual successor and modern port of Mystcraft for Minecraft 1.21.1 on NeoFo
 '''
 
 # The [[mixins]] block allows you to declare your mixin config to FML so that it gets loaded.
-#[[mixins]]
-#config="${mod_id}.mixins.json"
+[[mixins]]
+config="${mod_id}.mixins.json"
 
 # The [[accessTransformers]] block allows you to declare where your AT file is.
 # If this block is omitted, a fallback attempt will be made to load an AT from META-INF/accesstransformer.cfg