lazy load chunk capabilities so that OptiFine doesn't kill itself

src/main/java/de/ellpeck/naturesaura/api/aura/chunk/IAuraChunk.java

@@ -6,7 +6,6 @@ import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 import net.minecraft.world.chunk.Chunk;
-import net.minecraftforge.common.capabilities.ICapabilityProvider;
 import net.minecraftforge.common.util.INBTSerializable;
 
 import java.util.function.BiConsumer;
@@ -19,7 +18,7 @@ import java.util.function.BiConsumer;
  * It is not intended for API users to create custom implementation of this
  * class.
  */
-public interface IAuraChunk extends ICapabilityProvider, INBTSerializable<NBTTagCompound> {
+public interface IAuraChunk extends INBTSerializable<NBTTagCompound> {
     /**
      * The default amount of Aura that a chunk has stored
      */

src/main/java/de/ellpeck/naturesaura/chunk/AuraChunk.java

@@ -11,18 +11,14 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTBase;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.nbt.NBTTagList;
-import net.minecraft.util.EnumFacing;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.Tuple;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 import net.minecraft.world.chunk.Chunk;
-import net.minecraftforge.common.capabilities.Capability;
 import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
 import org.apache.commons.lang3.mutable.MutableInt;
 
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -196,17 +192,6 @@ public class AuraChunk implements IAuraChunk {
         }
     }
 
-    @Override
-    public boolean hasCapability(@Nonnull Capability<?> capability, @Nullable EnumFacing facing) {
-        return capability == NaturesAuraAPI.capAuraChunk;
-    }
-
-    @Nullable
-    @Override
-    public <T> T getCapability(@Nonnull Capability<T> capability, @Nullable EnumFacing facing) {
-        return capability == NaturesAuraAPI.capAuraChunk ? (T) this : null;
-    }
-
     @Override
     public NBTTagCompound serializeNBT() {
         NBTTagList list = new NBTTagList();

src/main/java/de/ellpeck/naturesaura/chunk/AuraChunkProvider.java

@@ -0,0 +1,51 @@
+package de.ellpeck.naturesaura.chunk;
+
+import de.ellpeck.naturesaura.api.NaturesAuraAPI;
+import de.ellpeck.naturesaura.api.aura.chunk.IAuraChunk;
+import de.ellpeck.naturesaura.api.aura.type.IAuraType;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.util.EnumFacing;
+import net.minecraft.world.chunk.Chunk;
+import net.minecraftforge.common.capabilities.Capability;
+import net.minecraftforge.common.capabilities.ICapabilityProvider;
+import net.minecraftforge.common.util.INBTSerializable;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
+public class AuraChunkProvider implements ICapabilityProvider, INBTSerializable<NBTTagCompound> {
+
+    private final Chunk chunk;
+    private IAuraChunk auraChunk;
+
+    public AuraChunkProvider(Chunk chunk) {
+        this.chunk = chunk;
+    }
+
+    private IAuraChunk getAuraChunk() {
+        if (this.auraChunk == null)
+            this.auraChunk = new AuraChunk(this.chunk, IAuraType.forWorld(this.chunk.getWorld()));
+        return this.auraChunk;
+    }
+
+    @Override
+    public boolean hasCapability(@Nonnull Capability<?> capability, @Nullable EnumFacing facing) {
+        return capability == NaturesAuraAPI.capAuraChunk;
+    }
+
+    @Nullable
+    @Override
+    public <T> T getCapability(@Nonnull Capability<T> capability, @Nullable EnumFacing facing) {
+        return capability == NaturesAuraAPI.capAuraChunk ? (T) this.getAuraChunk() : null;
+    }
+
+    @Override
+    public NBTTagCompound serializeNBT() {
+        return this.getAuraChunk().serializeNBT();
+    }
+
+    @Override
+    public void deserializeNBT(NBTTagCompound nbt) {
+        this.getAuraChunk().deserializeNBT(nbt);
+    }
+}

src/main/java/de/ellpeck/naturesaura/events/CommonEvents.java

@@ -5,8 +5,8 @@ import de.ellpeck.naturesaura.ModConfig;
 import de.ellpeck.naturesaura.NaturesAura;
 import de.ellpeck.naturesaura.api.NaturesAuraAPI;
 import de.ellpeck.naturesaura.api.aura.chunk.IAuraChunk;
-import de.ellpeck.naturesaura.api.aura.type.IAuraType;
 import de.ellpeck.naturesaura.chunk.AuraChunk;
+import de.ellpeck.naturesaura.chunk.AuraChunkProvider;
 import de.ellpeck.naturesaura.misc.WorldData;
 import de.ellpeck.naturesaura.packet.PacketHandler;
 import net.minecraft.util.ResourceLocation;
@@ -28,13 +28,7 @@ public class CommonEvents {
     @SubscribeEvent
     public void onChunkCapsAttach(AttachCapabilitiesEvent<Chunk> event) {
         Chunk chunk = event.getObject();
-        World world = chunk.getWorld();
+        event.addCapability(new ResourceLocation(NaturesAura.MOD_ID, "aura"), new AuraChunkProvider(chunk));
-        if (world == null) {
-            NaturesAura.LOGGER.warn("Chunk with null world found. This is most likely due to OptiFine doing stuff that should really be disallowed. I don't know if this will cause any further issues, but hopefully not.");
-            return;
-        }
-        IAuraType type = IAuraType.forWorld(world);
-        event.addCapability(new ResourceLocation(NaturesAura.MOD_ID, "aura"), new AuraChunk(chunk, type));
     }
 
     @SubscribeEvent