add the concept of aura types and make some stuff inaccessible in the nether and the end

src/main/java/de/ellpeck/naturesaura/aura/AuraType.java

@@ -0,0 +1,27 @@
+package de.ellpeck.naturesaura.aura;
+
+import net.minecraft.world.World;
+
+public enum AuraType {
+    OVERWORLD,
+    NETHER,
+    END,
+    OTHER;
+
+    public boolean isPresent(World world) {
+        return forWorld(world) == this;
+    }
+
+    public static AuraType forWorld(World world) {
+        switch (world.provider.getDimensionType()) {
+            case OVERWORLD:
+                return OVERWORLD;
+            case NETHER:
+                return NETHER;
+            case THE_END:
+                return END;
+            default:
+                return OTHER;
+        }
+    }
+}

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

@@ -2,6 +2,7 @@ package de.ellpeck.naturesaura.aura.chunk;
 
 import de.ellpeck.naturesaura.Helper;
 import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.aura.AuraType;
 import de.ellpeck.naturesaura.aura.Capabilities;
 import de.ellpeck.naturesaura.aura.chunk.effect.GrassDieEffect;
 import de.ellpeck.naturesaura.aura.chunk.effect.IDrainSpotEffect;
@@ -36,15 +37,23 @@ public class AuraChunk implements ICapabilityProvider, INBTSerializable<NBTTagCo
     public static final int DEFAULT_AURA = 10000;
 
     private final Chunk chunk;
+    private final AuraType type;
     private final Map<BlockPos, MutableInt> drainSpots = new HashMap<>();
     private final List<IDrainSpotEffect> effects = new ArrayList<>();
     private boolean needsSync;
 
-    public AuraChunk(Chunk chunk) {
+    public AuraChunk(Chunk chunk, AuraType type) {
         this.chunk = chunk;
-        this.effects.add(new ReplenishingEffect());
-        this.effects.add(new GrassDieEffect());
-        this.effects.add(new PlantBoostEffect());
+        this.type = type;
+
+        this.addEffect(new ReplenishingEffect());
+        this.addEffect(new GrassDieEffect());
+        this.addEffect(new PlantBoostEffect());
+    }
+
+    public void addEffect(IDrainSpotEffect effect) {
+        if (effect.appliesToType(this.type))
+            this.effects.add(effect);
     }
 
     public static void getSpotsInArea(World world, BlockPos pos, int radius, BiConsumer<BlockPos, MutableInt> consumer) {
@@ -149,6 +158,10 @@ public class AuraChunk implements ICapabilityProvider, INBTSerializable<NBTTagCo
         this.drainSpots.putAll(spots);
     }
 
+    public AuraType getType() {
+        return this.type;
+    }
+
     public void markDirty() {
         this.needsSync = true;
     }

src/main/java/de/ellpeck/naturesaura/aura/chunk/effect/GrassDieEffect.java

@@ -1,6 +1,7 @@
 package de.ellpeck.naturesaura.aura.chunk.effect;
 
 import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.aura.AuraType;
 import de.ellpeck.naturesaura.aura.chunk.AuraChunk;
 import de.ellpeck.naturesaura.blocks.ModBlocks;
 import net.minecraft.block.*;
@@ -49,4 +50,9 @@ public class GrassDieEffect implements IDrainSpotEffect {
             }
         }
     }
+
+    @Override
+    public boolean appliesToType(AuraType type) {
+        return type == AuraType.OVERWORLD;
+    }
 }

src/main/java/de/ellpeck/naturesaura/aura/chunk/effect/IDrainSpotEffect.java

@@ -1,5 +1,6 @@
 package de.ellpeck.naturesaura.aura.chunk.effect;
 
+import de.ellpeck.naturesaura.aura.AuraType;
 import de.ellpeck.naturesaura.aura.chunk.AuraChunk;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
@@ -10,4 +11,5 @@ public interface IDrainSpotEffect {
 
     void update(World world, Chunk chunk, AuraChunk auraChunk, BlockPos pos, MutableInt spot);
 
+    boolean appliesToType(AuraType type);
 }

src/main/java/de/ellpeck/naturesaura/aura/chunk/effect/PlantBoostEffect.java

@@ -1,6 +1,7 @@
 package de.ellpeck.naturesaura.aura.chunk.effect;
 
 import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.aura.AuraType;
 import de.ellpeck.naturesaura.aura.chunk.AuraChunk;
 import de.ellpeck.naturesaura.packet.PacketHandler;
 import de.ellpeck.naturesaura.packet.PacketParticles;
@@ -51,4 +52,9 @@ public class PlantBoostEffect implements IDrainSpotEffect {
             }
         }
     }
+
+    @Override
+    public boolean appliesToType(AuraType type) {
+        return type == AuraType.OVERWORLD;
+    }
 }

src/main/java/de/ellpeck/naturesaura/aura/chunk/effect/ReplenishingEffect.java

@@ -1,7 +1,7 @@
 package de.ellpeck.naturesaura.aura.chunk.effect;
 
 import de.ellpeck.naturesaura.Helper;
-import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.aura.AuraType;
 import de.ellpeck.naturesaura.aura.Capabilities;
 import de.ellpeck.naturesaura.aura.chunk.AuraChunk;
 import de.ellpeck.naturesaura.aura.chunk.ISpotDrainable;
@@ -19,6 +19,7 @@ public class ReplenishingEffect implements IDrainSpotEffect {
     public void update(World world, Chunk chunk, AuraChunk auraChunk, BlockPos pos, MutableInt spot) {
         int amount = spot.intValue();
         if (amount < 0) {
+            AuraType type = AuraType.forWorld(world);
             List<ISpotDrainable> tiles = new ArrayList<>();
             Helper.getTileEntitiesInArea(world, pos, 25, tile -> {
                 if (tile.hasCapability(Capabilities.auraContainer, null)) {
@@ -31,7 +32,11 @@ public class ReplenishingEffect implements IDrainSpotEffect {
             if (!tiles.isEmpty()) {
                 for (int i = world.rand.nextInt(6); i >= 0; i--) {
                     ISpotDrainable tile = tiles.get(world.rand.nextInt(tiles.size()));
+                    if (!tile.isAcceptableType(type))
+                        continue;
                     int drained = tile.drainAuraPassively(-amount, false);
+                    if (drained <= 0)
+                        continue;
                     auraChunk.storeAura(pos, drained);
                     amount += drained;
                     if (amount >= drained) {
@@ -41,4 +46,9 @@ public class ReplenishingEffect implements IDrainSpotEffect {
             }
         }
     }
+
+    @Override
+    public boolean appliesToType(AuraType type) {
+        return true;
+    }
 }

src/main/java/de/ellpeck/naturesaura/aura/container/BasicAuraContainer.java

@@ -1,13 +1,16 @@
 package de.ellpeck.naturesaura.aura.container;
 
+import de.ellpeck.naturesaura.aura.AuraType;
 import net.minecraft.nbt.NBTTagCompound;
 
 public class BasicAuraContainer implements IAuraContainer {
 
+    protected final AuraType type;
     protected final int maxAura;
     protected int aura;
 
-    public BasicAuraContainer(int maxAura) {
+    public BasicAuraContainer(AuraType type, int maxAura) {
+        this.type = type;
         this.maxAura = maxAura;
     }
 
@@ -44,6 +47,11 @@ public class BasicAuraContainer implements IAuraContainer {
         return 0x1E891E;
     }
 
+    @Override
+    public boolean isAcceptableType(AuraType type) {
+        return this.type == null || this.type == type;
+    }
+
     public void writeNBT(NBTTagCompound compound) {
         compound.setInteger("aura", this.aura);
     }

src/main/java/de/ellpeck/naturesaura/aura/container/IAuraContainer.java

@@ -1,5 +1,7 @@
 package de.ellpeck.naturesaura.aura.container;
 
+import de.ellpeck.naturesaura.aura.AuraType;
+
 public interface IAuraContainer {
     int storeAura(int amountToStore, boolean simulate);
 
@@ -10,4 +12,6 @@ public interface IAuraContainer {
     int getMaxAura();
 
     int getAuraColor();
+
+    boolean isAcceptableType(AuraType type);
 }

src/main/java/de/ellpeck/naturesaura/aura/container/ItemAuraContainer.java

@@ -1,15 +1,18 @@
 package de.ellpeck.naturesaura.aura.container;
 
+import de.ellpeck.naturesaura.aura.AuraType;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 
 public class ItemAuraContainer implements IAuraContainer {
 
     protected final ItemStack stack;
+    protected final AuraType type;
     protected final int maxAura;
 
-    public ItemAuraContainer(ItemStack stack, int maxAura) {
+    public ItemAuraContainer(ItemStack stack, AuraType type, int maxAura) {
         this.stack = stack;
+        this.type = type;
         this.maxAura = maxAura;
     }
 
@@ -58,4 +61,9 @@ public class ItemAuraContainer implements IAuraContainer {
     public int getAuraColor() {
         return 0x42a6bc;
     }
+
+    @Override
+    public boolean isAcceptableType(AuraType type) {
+        return this.type == null || this.type == type;
+    }
 }

src/main/java/de/ellpeck/naturesaura/aura/container/NaturalAuraContainer.java

@@ -1,13 +1,14 @@
 package de.ellpeck.naturesaura.aura.container;
 
+import de.ellpeck.naturesaura.aura.AuraType;
 import de.ellpeck.naturesaura.aura.chunk.ISpotDrainable;
 
 public class NaturalAuraContainer extends BasicAuraContainer implements ISpotDrainable {
 
     private final int drainAmount;
 
-    public NaturalAuraContainer(int aura, int drainAmount) {
-        super(aura);
+    public NaturalAuraContainer(AuraType type, int aura, int drainAmount) {
+        super(type, aura);
         this.aura = aura;
         this.drainAmount = drainAmount;
     }

src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityAncientLeaves.java

@@ -1,5 +1,6 @@
 package de.ellpeck.naturesaura.blocks.tiles;
 
+import de.ellpeck.naturesaura.aura.AuraType;
 import de.ellpeck.naturesaura.aura.container.IAuraContainer;
 import de.ellpeck.naturesaura.aura.container.NaturalAuraContainer;
 import net.minecraft.nbt.NBTTagCompound;
@@ -7,7 +8,7 @@ import net.minecraft.util.EnumFacing;
 
 public class TileEntityAncientLeaves extends TileEntityImpl {
 
-    private final NaturalAuraContainer container = new NaturalAuraContainer(20, 5) {
+    private final NaturalAuraContainer container = new NaturalAuraContainer(AuraType.OVERWORLD, 20, 5) {
         @Override
         public int getAuraColor() {
             return 0xc46df9;

src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityFlowerGenerator.java

@@ -1,6 +1,7 @@
 package de.ellpeck.naturesaura.blocks.tiles;
 
 import de.ellpeck.naturesaura.Helper;
+import de.ellpeck.naturesaura.aura.AuraType;
 import de.ellpeck.naturesaura.aura.chunk.AuraChunk;
 import de.ellpeck.naturesaura.packet.PacketHandler;
 import de.ellpeck.naturesaura.packet.PacketParticleStream;
@@ -62,7 +63,7 @@ public class TileEntityFlowerGenerator extends TileEntityImpl implements ITickab
             int toAdd = Math.max(0, addAmount - curr.getValue());
             if (toAdd > 0) {
                 BlockPos auraPos = AuraChunk.getLowestSpot(this.world, this.pos, 30, this.pos);
-                if (AuraChunk.getAuraInArea(this.world, auraPos, 30) < 20000)
+                if (AuraType.OVERWORLD.isPresent(this.world) && AuraChunk.getAuraInArea(this.world, auraPos, 30) < 20000)
                     AuraChunk.getAuraChunk(this.world, auraPos).storeAura(auraPos, toAdd);
                 else
                     toAdd = 0;

src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityNatureAltar.java

@@ -1,6 +1,7 @@
 package de.ellpeck.naturesaura.blocks.tiles;
 
 import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.aura.AuraType;
 import de.ellpeck.naturesaura.aura.Capabilities;
 import de.ellpeck.naturesaura.aura.chunk.AuraChunk;
 import de.ellpeck.naturesaura.aura.container.BasicAuraContainer;
@@ -47,7 +48,7 @@ public class TileEntityNatureAltar extends TileEntityImpl implements ITickable {
         }
     };
 
-    private final BasicAuraContainer container = new BasicAuraContainer(5000);
+    private final BasicAuraContainer container = new BasicAuraContainer(AuraType.OVERWORLD, 5000);
     public boolean structureFine;
 
     private AltarRecipe currentRecipe;
@@ -70,7 +71,7 @@ public class TileEntityNatureAltar extends TileEntityImpl implements ITickable {
 
             if (this.structureFine) {
                 int space = this.container.storeAura(3, true);
-                if (space > 0) {
+                if (space > 0 && this.container.isAcceptableType(AuraType.forWorld(this.world))) {
                     int toStore = Math.min(AuraChunk.getAuraInArea(this.world, this.pos, 20), space);
                     if (toStore > 0) {
                         BlockPos spot = AuraChunk.getHighestSpot(this.world, this.pos, 20, this.pos);

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

@@ -2,6 +2,7 @@ package de.ellpeck.naturesaura.events;
 
 import baubles.api.BaublesApi;
 import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.aura.AuraType;
 import de.ellpeck.naturesaura.aura.Capabilities;
 import de.ellpeck.naturesaura.aura.chunk.AuraChunk;
 import de.ellpeck.naturesaura.aura.container.IAuraContainer;
@@ -60,6 +61,7 @@ public class ClientEvents {
                     left.add(prefix + drainSpot.intValue() + " @ " + blockPos.getX() + " " + blockPos.getY() + " " + blockPos.getZ());
                 }));
                 left.add(prefix + "Total: " + amount.intValue() + " in " + spots.intValue() + " spots");
+                left.add(prefix + "Type: " + AuraType.forWorld(mc.world));
             }
         }
     }

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

@@ -1,6 +1,7 @@
 package de.ellpeck.naturesaura.events;
 
 import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.aura.AuraType;
 import de.ellpeck.naturesaura.aura.Capabilities;
 import de.ellpeck.naturesaura.aura.chunk.AuraChunk;
 import de.ellpeck.naturesaura.packet.PacketHandler;
@@ -21,7 +22,9 @@ public class CommonEvents {
 
     @SubscribeEvent
     public void onChunkCapsAttach(AttachCapabilitiesEvent<Chunk> event) {
-        event.addCapability(new ResourceLocation(NaturesAura.MOD_ID, "aura"), new AuraChunk(event.getObject()));
+        Chunk chunk = event.getObject();
+        AuraType type = AuraType.forWorld(chunk.getWorld());
+        event.addCapability(new ResourceLocation(NaturesAura.MOD_ID, "aura"), new AuraChunk(chunk, type));
     }
 
     @SubscribeEvent

src/main/java/de/ellpeck/naturesaura/items/ItemAuraCache.java

@@ -76,7 +76,7 @@ public class ItemAuraCache extends ItemImpl implements ITrinketItem {
     @Override
     public ICapabilityProvider initCapabilities(ItemStack stack, @Nullable NBTTagCompound nbt) {
         return new ICapabilityProvider() {
-            private final ItemAuraContainer container = new ItemAuraContainer(stack, 4000);
+            private final ItemAuraContainer container = new ItemAuraContainer(stack, null, 4000);
 
             @Override
             public boolean hasCapability(@Nonnull Capability<?> capability, @Nullable EnumFacing facing) {

src/main/resources/assets/naturesaura/patchouli_books/book/en_us/entries/intro/aura.json

@@ -6,11 +6,11 @@
     "pages": [
         {
             "type": "text",
-            "text": "Contrary to popular belief, $(aura) isn't stored in single, floating $(italic)nodes$(), but rather, it is present everywhere in the world.$(br)While touching it is impossible, making use of its powers certainly is not. When $(aura) is used right, it can assist in the production of materials, the creation of new ideas and the harnessing of the world and its components."
+            "text": "Contrary to popular belief, $(aura) isn't stored in single, floating $(italic)nodes$(), but rather, it is present everywhere in the world.$(br)While touching it is impossible, making use of its powers certainly is not. When $(aura) is used right, it can assist in the $(thing)production$() of materials, the $(thing)creation$() of new ideas and the $(thing)harnessing$() of the world and its components."
         },
         {
             "type": "text",
-            "text": "However, it isn't always as easy as that. Making use of it wrongly, specifically draining it completely from an area, will face the culprit with diminishing returns.$(br)So while $(aura) is plentiful and useful, abusing it would certainly be ill-advised."
+            "text": "However, it isn't always as easy as that. Making use of it wrongly, specifically $(thing)draining$() it completely from an area, will face the culprit with diminishing returns.$(br)So while $(aura) is plentiful and useful, abusing it would certainly be ill-advised.$(p)An additional thing to note is that, based on the world you are in - specifically, the $(item)dimension$(), different types of $(aura) will be present, making some mechanics work unlike expected."
         }
     ]
 }