added the breathlessness effect

src/main/java/de/ellpeck/naturesaura/ModConfig.java

@@ -1,14 +1,9 @@
 package de.ellpeck.naturesaura;
 
 import de.ellpeck.naturesaura.api.NaturesAuraAPI;
-import net.minecraft.block.Block;
-import net.minecraft.block.BlockFlower;
-import net.minecraft.block.BlockStoneBrick;
-import net.minecraft.init.Blocks;
 import net.minecraftforge.common.config.Config;
 import net.minecraftforge.common.config.Config.Comment;
 import net.minecraftforge.common.config.Config.RangeDouble;
-import net.minecraftforge.fml.common.registry.ForgeRegistries;
 
 @Config(modid = NaturesAura.MOD_ID, category = "")
 public final class ModConfig {
@@ -40,6 +35,8 @@ public final class ModConfig {
         public boolean plantBoostEffect = true;
         @Comment("If the Aura Imbalance effect of explosions happening randomly if Aura levels are too low should occur")
         public boolean explosionEffect = true;
+        @Comment("If the Aura Imbalance effect of breathlessness if Aura levels are too low should occur")
+        public boolean breathlessEffect = true;
     }
 
     public static class Client {

src/main/java/de/ellpeck/naturesaura/NaturesAura.java

@@ -12,6 +12,7 @@ import de.ellpeck.naturesaura.compat.Compat;
 import de.ellpeck.naturesaura.events.CommonEvents;
 import de.ellpeck.naturesaura.items.ModItems;
 import de.ellpeck.naturesaura.packet.PacketHandler;
+import de.ellpeck.naturesaura.potion.ModPotions;
 import de.ellpeck.naturesaura.proxy.IProxy;
 import de.ellpeck.naturesaura.recipes.ModRecipes;
 import de.ellpeck.naturesaura.reg.ModRegistry;
@@ -59,6 +60,7 @@ public final class NaturesAura {
 
         new ModBlocks();
         new ModItems();
+        new ModPotions();
 
         Compat.preInit();
         PacketHandler.init();

src/main/java/de/ellpeck/naturesaura/blocks/BlockAncientLeaves.java

@@ -32,11 +32,11 @@ import java.util.List;
 import java.util.Random;
 
 public class BlockAncientLeaves extends BlockLeaves implements
-        IModItem, IModelProvider, IColorProvidingBlock, IColorProvidingItem, ITileEntityProvider {
+        IModItem, ICreativeItem, IModelProvider, IColorProvidingBlock, IColorProvidingItem, ITileEntityProvider {
 
     public BlockAncientLeaves() {
         this.leavesFancy = true;
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
     }
 
     @Override
@@ -49,11 +49,6 @@ public class BlockAncientLeaves extends BlockLeaves implements
         return "ancient_leaves";
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
 

src/main/java/de/ellpeck/naturesaura/blocks/BlockAncientLog.java

@@ -1,25 +1,20 @@
 package de.ellpeck.naturesaura.blocks;
 
-import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.reg.ICreativeItem;
 import de.ellpeck.naturesaura.reg.IModItem;
 import de.ellpeck.naturesaura.reg.IModelProvider;
 import de.ellpeck.naturesaura.reg.ModRegistry;
 import net.minecraft.block.BlockLog;
 import net.minecraft.block.state.BlockStateContainer;
 import net.minecraft.block.state.IBlockState;
-import net.minecraft.item.ItemStack;
-import net.minecraft.util.ResourceLocation;
 import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 
-import java.util.Collections;
-import java.util.Map;
-
-public class BlockAncientLog extends BlockLog implements IModItem, IModelProvider {
+public class BlockAncientLog extends BlockLog implements IModItem, ICreativeItem, IModelProvider {
 
     public BlockAncientLog() {
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
     }
 
     @Override
@@ -27,11 +22,6 @@ public class BlockAncientLog extends BlockLog implements IModItem, IModelProvide
         return "ancient_log";
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
 

src/main/java/de/ellpeck/naturesaura/blocks/BlockAncientSapling.java

@@ -1,7 +1,7 @@
 package de.ellpeck.naturesaura.blocks;
 
-import de.ellpeck.naturesaura.NaturesAura;
 import de.ellpeck.naturesaura.gen.WorldGenAncientTree;
+import de.ellpeck.naturesaura.reg.ICreativeItem;
 import de.ellpeck.naturesaura.reg.IModItem;
 import de.ellpeck.naturesaura.reg.IModelProvider;
 import de.ellpeck.naturesaura.reg.ModRegistry;
@@ -11,8 +11,6 @@ import net.minecraft.block.IGrowable;
 import net.minecraft.block.SoundType;
 import net.minecraft.block.state.BlockStateContainer;
 import net.minecraft.block.state.IBlockState;
-import net.minecraft.item.ItemStack;
-import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
@@ -22,11 +20,9 @@ import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 
-import java.util.Collections;
-import java.util.Map;
 import java.util.Random;
 
-public class BlockAncientSapling extends BlockBush implements IGrowable, IModItem, IModelProvider {
+public class BlockAncientSapling extends BlockBush implements IGrowable, IModItem, ICreativeItem, IModelProvider {
 
     private static final AxisAlignedBB AABB = new AxisAlignedBB(
             0.09999999403953552D, 0.0D, 0.09999999403953552D,
@@ -36,7 +32,7 @@ public class BlockAncientSapling extends BlockBush implements IGrowable, IModIte
         this.setHardness(0.0F);
         this.setSoundType(SoundType.PLANT);
 
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
     }
 
     @Override
@@ -60,11 +56,6 @@ public class BlockAncientSapling extends BlockBush implements IGrowable, IModIte
         return "ancient_sapling";
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
 

src/main/java/de/ellpeck/naturesaura/blocks/BlockContainerImpl.java

@@ -2,6 +2,7 @@ package de.ellpeck.naturesaura.blocks;
 
 import de.ellpeck.naturesaura.NaturesAura;
 import de.ellpeck.naturesaura.blocks.tiles.TileEntityImpl;
+import de.ellpeck.naturesaura.reg.ICreativeItem;
 import de.ellpeck.naturesaura.reg.IModItem;
 import de.ellpeck.naturesaura.reg.IModelProvider;
 import de.ellpeck.naturesaura.reg.ModRegistry;
@@ -26,7 +27,7 @@ import net.minecraftforge.fml.common.registry.GameRegistry;
 
 import javax.annotation.Nullable;
 
-public class BlockContainerImpl extends BlockContainer implements IModItem, IModelProvider {
+public class BlockContainerImpl extends BlockContainer implements IModItem, ICreativeItem, IModelProvider {
 
     private final String baseName;
 
@@ -40,7 +41,7 @@ public class BlockContainerImpl extends BlockContainer implements IModItem, IMod
         this.tileClass = tileClass;
         this.tileRegName = tileReg;
 
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
     }
 
     @Nullable
@@ -58,11 +59,6 @@ public class BlockContainerImpl extends BlockContainer implements IModItem, IMod
         return this.baseName;
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
     }

src/main/java/de/ellpeck/naturesaura/blocks/BlockGoldenLeaves.java

@@ -37,7 +37,7 @@ public class BlockGoldenLeaves extends BlockLeaves implements
 
     public BlockGoldenLeaves() {
         this.leavesFancy = true;
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
     }
 
     @Override
@@ -50,11 +50,6 @@ public class BlockGoldenLeaves extends BlockLeaves implements
         return "golden_leaves";
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
 

src/main/java/de/ellpeck/naturesaura/blocks/BlockImpl.java

@@ -1,5 +1,6 @@
 package de.ellpeck.naturesaura.blocks;
 
+import de.ellpeck.naturesaura.reg.ICreativeItem;
 import de.ellpeck.naturesaura.reg.IModItem;
 import de.ellpeck.naturesaura.reg.IModelProvider;
 import de.ellpeck.naturesaura.reg.ModRegistry;
@@ -10,14 +11,14 @@ import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 
-public class BlockImpl extends Block implements IModItem, IModelProvider {
+public class BlockImpl extends Block implements IModItem, ICreativeItem, IModelProvider {
 
     private final String baseName;
 
     public BlockImpl(String baseName, Material material) {
         super(material);
         this.baseName = baseName;
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
     }
 
     @Override
@@ -25,11 +26,6 @@ public class BlockImpl extends Block implements IModItem, IModelProvider {
         return this.baseName;
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
 

src/main/java/de/ellpeck/naturesaura/blocks/BlockSlabsNA.java

@@ -9,6 +9,7 @@ import net.minecraft.block.properties.PropertyEnum;
 import net.minecraft.block.state.BlockFaceShape;
 import net.minecraft.block.state.BlockStateContainer;
 import net.minecraft.block.state.IBlockState;
+import net.minecraft.creativetab.CreativeTabs;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemBlock;
@@ -39,8 +40,8 @@ public abstract class BlockSlabsNA extends BlockImpl implements ICustomItemBlock
     }
 
     @Override
-    public boolean shouldAddCreative() {
-        return !this.isDouble();
+    public CreativeTabs getTabToAdd() {
+        return this.isDouble() ? null : super.getTabToAdd();
     }
 
     @Override

src/main/java/de/ellpeck/naturesaura/blocks/BlockStairsNA.java

@@ -1,5 +1,6 @@
 package de.ellpeck.naturesaura.blocks;
 
+import de.ellpeck.naturesaura.reg.ICreativeItem;
 import de.ellpeck.naturesaura.reg.IModItem;
 import de.ellpeck.naturesaura.reg.IModelProvider;
 import de.ellpeck.naturesaura.reg.ModRegistry;
@@ -11,14 +12,14 @@ import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 
-public class BlockStairsNA extends BlockStairs implements IModItem, IModelProvider {
+public class BlockStairsNA extends BlockStairs implements IModItem, ICreativeItem, IModelProvider {
 
     private final String baseName;
 
     protected BlockStairsNA(String baseName, IBlockState modelState) {
         super(modelState);
         this.baseName = baseName;
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
         this.fullBlock = false;
         this.lightOpacity = 0;
     }
@@ -28,11 +29,6 @@ public class BlockStairsNA extends BlockStairs implements IModItem, IModelProvid
         return this.baseName;
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
 

src/main/java/de/ellpeck/naturesaura/chunk/effect/BreathlessEffect.java

@@ -0,0 +1,52 @@
+package de.ellpeck.naturesaura.chunk.effect;
+
+import de.ellpeck.naturesaura.ModConfig;
+import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.api.aura.chunk.IAuraChunk;
+import de.ellpeck.naturesaura.api.aura.chunk.IDrainSpotEffect;
+import de.ellpeck.naturesaura.api.aura.type.IAuraType;
+import de.ellpeck.naturesaura.potion.ModPotions;
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.potion.PotionEffect;
+import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.MathHelper;
+import net.minecraft.world.World;
+import net.minecraft.world.chunk.Chunk;
+import org.apache.commons.lang3.mutable.MutableInt;
+
+import java.util.List;
+
+public class BreathlessEffect implements IDrainSpotEffect {
+
+    public static final ResourceLocation NAME = new ResourceLocation(NaturesAura.MOD_ID, "breathless");
+
+    @Override
+    public void update(World world, Chunk chunk, IAuraChunk auraChunk, BlockPos pos, MutableInt spot) {
+        if (spot.intValue() >= 0 || world.getTotalWorldTime() % 100 != 0)
+            return;
+        int aura = IAuraChunk.getAuraInArea(world, pos, 50);
+        if (aura > 0)
+            return;
+        int dist = Math.min(Math.abs(aura) / 500, 75);
+        if (dist < 10)
+            return;
+        int amp = Math.min(MathHelper.floor(Math.abs(aura) / 25000F), 3);
+
+        List<EntityLivingBase> entities = world.getEntitiesWithinAABB(EntityLivingBase.class,
+                new AxisAlignedBB(pos).grow(dist));
+        for (EntityLivingBase entity : entities)
+            entity.addPotionEffect(new PotionEffect(ModPotions.BREATHLESS, 300, amp));
+    }
+
+    @Override
+    public boolean appliesHere(Chunk chunk, IAuraChunk auraChunk, IAuraType type) {
+        return ModConfig.enabledFeatures.breathlessEffect;
+    }
+
+    @Override
+    public ResourceLocation getName() {
+        return NAME;
+    }
+}

src/main/java/de/ellpeck/naturesaura/chunk/effect/DrainSpotEffects.java

@@ -10,5 +10,6 @@ public final class DrainSpotEffects {
         NaturesAuraAPI.DRAIN_SPOT_EFFECTS.put(ReplenishingEffect.NAME, ReplenishingEffect::new);
         NaturesAuraAPI.DRAIN_SPOT_EFFECTS.put(BalanceEffect.NAME, BalanceEffect::new);
         NaturesAuraAPI.DRAIN_SPOT_EFFECTS.put(ExplosionEffect.NAME, ExplosionEffect::new);
+        NaturesAuraAPI.DRAIN_SPOT_EFFECTS.put(BreathlessEffect.NAME, BreathlessEffect::new);
     }
 }

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

@@ -24,11 +24,11 @@ public class GrassDieEffect implements IDrainSpotEffect {
     @Override
     public void update(World world, Chunk chunk, IAuraChunk auraChunk, BlockPos pos, MutableInt spot) {
         if (spot.intValue() < 0) {
-            int aura = IAuraChunk.getAuraInArea(world, pos, 25);
+            int aura = IAuraChunk.getAuraInArea(world, pos, 50);
             if (aura < 0) {
                 int amount = Math.min(300, Math.abs(aura) / 1000);
                 if (amount > 1) {
-                    int dist = MathHelper.clamp(Math.abs(aura) / 750, 5, 45);
+                    int dist = MathHelper.clamp(Math.abs(aura) / 750, 5, 75);
                     for (int i = amount / 2 + world.rand.nextInt(amount / 2); i >= 0; i--) {
                         BlockPos grassPos = new BlockPos(
                                 pos.getX() + world.rand.nextGaussian() * dist,

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

@@ -1,26 +1,21 @@
 package de.ellpeck.naturesaura.items;
 
-import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.reg.ICreativeItem;
 import de.ellpeck.naturesaura.reg.IModItem;
 import de.ellpeck.naturesaura.reg.IModelProvider;
 import de.ellpeck.naturesaura.reg.ModRegistry;
 import net.minecraft.item.Item;
-import net.minecraft.item.ItemStack;
-import net.minecraft.util.ResourceLocation;
 import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 
-import java.util.Collections;
-import java.util.Map;
-
-public class ItemImpl extends Item implements IModItem, IModelProvider {
+public class ItemImpl extends Item implements IModItem, ICreativeItem, IModelProvider {
 
     private final String baseName;
 
     public ItemImpl(String baseName) {
         this.baseName = baseName;
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
     }
 
     @Override
@@ -28,11 +23,6 @@ public class ItemImpl extends Item implements IModItem, IModelProvider {
         return this.baseName;
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
 

src/main/java/de/ellpeck/naturesaura/items/tools/ItemAxeNA.java

@@ -2,6 +2,7 @@ package de.ellpeck.naturesaura.items.tools;
 
 import de.ellpeck.naturesaura.Helper;
 import de.ellpeck.naturesaura.items.ModItems;
+import de.ellpeck.naturesaura.reg.ICreativeItem;
 import de.ellpeck.naturesaura.reg.IModItem;
 import de.ellpeck.naturesaura.reg.IModelProvider;
 import de.ellpeck.naturesaura.reg.ModRegistry;
@@ -17,13 +18,13 @@ import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 
 import javax.annotation.Nullable;
 
-public class ItemAxeNA extends ItemAxe implements IModItem, IModelProvider {
+public class ItemAxeNA extends ItemAxe implements IModItem, ICreativeItem, IModelProvider {
     private final String baseName;
 
     public ItemAxeNA(String baseName, ToolMaterial material, float damage, float speed) {
         super(material, damage, speed);
         this.baseName = baseName;
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
     }
 
     @Override
@@ -31,11 +32,6 @@ public class ItemAxeNA extends ItemAxe implements IModItem, IModelProvider {
         return this.baseName;
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
 

src/main/java/de/ellpeck/naturesaura/items/tools/ItemHoeNA.java

@@ -1,7 +1,9 @@
 package de.ellpeck.naturesaura.items.tools;
 
+import crafttweaker.api.creativetabs.ICreativeTab;
 import de.ellpeck.naturesaura.Helper;
 import de.ellpeck.naturesaura.items.ModItems;
+import de.ellpeck.naturesaura.reg.ICreativeItem;
 import de.ellpeck.naturesaura.reg.IModItem;
 import de.ellpeck.naturesaura.reg.IModelProvider;
 import de.ellpeck.naturesaura.reg.ModRegistry;
@@ -24,14 +26,14 @@ import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 
 import javax.annotation.Nullable;
 
-public class ItemHoeNA extends ItemHoe implements IModItem, IModelProvider {
+public class ItemHoeNA extends ItemHoe implements IModItem, ICreativeItem, IModelProvider {
 
     private final String baseName;
 
     public ItemHoeNA(String baseName, ToolMaterial material) {
         super(material);
         this.baseName = baseName;
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
     }
 
     @Override
@@ -66,11 +68,6 @@ public class ItemHoeNA extends ItemHoe implements IModItem, IModelProvider {
         return this.baseName;
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
 

src/main/java/de/ellpeck/naturesaura/items/tools/ItemPickaxeNA.java

@@ -3,13 +3,12 @@ package de.ellpeck.naturesaura.items.tools;
 import de.ellpeck.naturesaura.Helper;
 import de.ellpeck.naturesaura.api.NaturesAuraAPI;
 import de.ellpeck.naturesaura.items.ModItems;
+import de.ellpeck.naturesaura.reg.ICreativeItem;
 import de.ellpeck.naturesaura.reg.IModItem;
 import de.ellpeck.naturesaura.reg.IModelProvider;
 import de.ellpeck.naturesaura.reg.ModRegistry;
-import net.minecraft.block.BlockStoneBrick;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.init.Blocks;
 import net.minecraft.init.SoundEvents;
 import net.minecraft.item.ItemPickaxe;
 import net.minecraft.item.ItemStack;
@@ -27,14 +26,14 @@ import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 
 import javax.annotation.Nullable;
 
-public class ItemPickaxeNA extends ItemPickaxe implements IModItem, IModelProvider {
+public class ItemPickaxeNA extends ItemPickaxe implements IModItem, ICreativeItem, IModelProvider {
 
     private final String baseName;
 
     public ItemPickaxeNA(String baseName, ToolMaterial material) {
         super(material);
         this.baseName = baseName;
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
     }
 
     @Override
@@ -42,11 +41,6 @@ public class ItemPickaxeNA extends ItemPickaxe implements IModItem, IModelProvid
         return this.baseName;
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
 

src/main/java/de/ellpeck/naturesaura/items/tools/ItemShovelNA.java

@@ -2,6 +2,7 @@ package de.ellpeck.naturesaura.items.tools;
 
 import de.ellpeck.naturesaura.Helper;
 import de.ellpeck.naturesaura.items.ModItems;
+import de.ellpeck.naturesaura.reg.ICreativeItem;
 import de.ellpeck.naturesaura.reg.IModItem;
 import de.ellpeck.naturesaura.reg.IModelProvider;
 import de.ellpeck.naturesaura.reg.ModRegistry;
@@ -27,13 +28,13 @@ import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 
 import javax.annotation.Nullable;
 
-public class ItemShovelNA extends ItemSpade implements IModItem, IModelProvider {
+public class ItemShovelNA extends ItemSpade implements IModItem, ICreativeItem, IModelProvider {
     private final String baseName;
 
     public ItemShovelNA(String baseName, ToolMaterial material) {
         super(material);
         this.baseName = baseName;
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
     }
 
     @Override
@@ -81,11 +82,6 @@ public class ItemShovelNA extends ItemSpade implements IModItem, IModelProvider
         return this.baseName;
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
 

src/main/java/de/ellpeck/naturesaura/items/tools/ItemSwordNA.java

@@ -2,6 +2,7 @@ package de.ellpeck.naturesaura.items.tools;
 
 import de.ellpeck.naturesaura.Helper;
 import de.ellpeck.naturesaura.items.ModItems;
+import de.ellpeck.naturesaura.reg.ICreativeItem;
 import de.ellpeck.naturesaura.reg.IModItem;
 import de.ellpeck.naturesaura.reg.IModelProvider;
 import de.ellpeck.naturesaura.reg.ModRegistry;
@@ -18,13 +19,13 @@ import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 
 import javax.annotation.Nullable;
 
-public class ItemSwordNA extends ItemSword implements IModItem, IModelProvider {
+public class ItemSwordNA extends ItemSword implements IModItem, ICreativeItem, IModelProvider {
     private final String baseName;
 
     public ItemSwordNA(String baseName, ToolMaterial material) {
         super(material);
         this.baseName = baseName;
-        ModRegistry.addItemOrBlock(this);
+        ModRegistry.add(this);
     }
 
     @Override
@@ -32,11 +33,6 @@ public class ItemSwordNA extends ItemSword implements IModItem, IModelProvider {
         return this.baseName;
     }
 
-    @Override
-    public boolean shouldAddCreative() {
-        return true;
-    }
-
     @Override
     public void onPreInit(FMLPreInitializationEvent event) {
 

src/main/java/de/ellpeck/naturesaura/potion/ModPotions.java

@@ -0,0 +1,9 @@
+package de.ellpeck.naturesaura.potion;
+
+import net.minecraft.potion.Potion;
+
+public final class ModPotions {
+
+    public static final Potion BREATHLESS = new PotionBreathless().setIconIndex(0, 0);
+
+}

src/main/java/de/ellpeck/naturesaura/potion/PotionBreathless.java

@@ -0,0 +1,42 @@
+package de.ellpeck.naturesaura.potion;
+
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.potion.PotionEffect;
+import net.minecraft.util.DamageSource;
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.event.entity.living.LivingHealEvent;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+
+import java.util.Random;
+
+public class PotionBreathless extends PotionImpl {
+
+    private final Random random = new Random();
+
+    protected PotionBreathless() {
+        super("breathless", true, 0);
+        MinecraftForge.EVENT_BUS.register(this);
+    }
+
+    @SubscribeEvent
+    public void onHeal(LivingHealEvent event) {
+        PotionEffect effect = event.getEntityLiving().getActivePotionEffect(this);
+        if (effect == null)
+            return;
+        float chance = (effect.getAmplifier() + 1) / 15F;
+        if (this.random.nextFloat() <= chance) {
+            event.setAmount(event.getAmount() / 4F);
+        }
+    }
+
+    @Override
+    public boolean isReady(int duration, int amplifier) {
+        int mod = 200 >> amplifier;
+        return mod > 0 && duration % mod == 0 && this.random.nextBoolean();
+    }
+
+    @Override
+    public void performEffect(EntityLivingBase entity, int amplifier) {
+        entity.attackEntityFrom(DamageSource.MAGIC, 1F);
+    }
+}

src/main/java/de/ellpeck/naturesaura/potion/PotionImpl.java

@@ -0,0 +1,58 @@
+package de.ellpeck.naturesaura.potion;
+
+import de.ellpeck.naturesaura.NaturesAura;
+import de.ellpeck.naturesaura.reg.IModItem;
+import de.ellpeck.naturesaura.reg.ModRegistry;
+import net.minecraft.client.Minecraft;
+import net.minecraft.potion.Potion;
+import net.minecraft.util.ResourceLocation;
+import net.minecraftforge.fml.common.event.FMLInitializationEvent;
+import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
+import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
+
+public class PotionImpl extends Potion implements IModItem {
+
+    private static final ResourceLocation TEXTURE = new ResourceLocation(NaturesAura.MOD_ID, "textures/gui/potions.png");
+    protected final String baseName;
+
+    protected PotionImpl(String baseName, boolean isBadEffectIn, int liquidColorIn) {
+        super(isBadEffectIn, liquidColorIn);
+        this.baseName = baseName;
+
+        ModRegistry.add(this);
+    }
+
+    @Override
+    public Potion setIconIndex(int x, int y) {
+        return super.setIconIndex(x, y);
+    }
+
+    @Override
+    @SideOnly(Side.CLIENT)
+    public int getStatusIconIndex() {
+        Minecraft.getMinecraft().renderEngine.bindTexture(TEXTURE);
+        return super.getStatusIconIndex();
+    }
+
+    @Override
+    public String getBaseName() {
+        return this.baseName;
+    }
+
+    @Override
+    public void onPreInit(FMLPreInitializationEvent event) {
+
+    }
+
+    @Override
+    public void onInit(FMLInitializationEvent event) {
+
+    }
+
+    @Override
+    public void onPostInit(FMLPostInitializationEvent event) {
+
+    }
+}

src/main/java/de/ellpeck/naturesaura/reg/ICreativeItem.java

@@ -0,0 +1,11 @@
+package de.ellpeck.naturesaura.reg;
+
+import de.ellpeck.naturesaura.NaturesAura;
+import net.minecraft.creativetab.CreativeTabs;
+
+public interface ICreativeItem {
+
+    default CreativeTabs getTabToAdd() {
+        return NaturesAura.CREATIVE_TAB;
+    }
+}

src/main/java/de/ellpeck/naturesaura/reg/IModItem.java

@@ -8,8 +8,6 @@ public interface IModItem {
 
     String getBaseName();
 
-    boolean shouldAddCreative();
-
     void onPreInit(FMLPreInitializationEvent event);
 
     void onInit(FMLInitializationEvent event);

src/main/java/de/ellpeck/naturesaura/reg/ModRegistry.java

@@ -3,9 +3,11 @@ package de.ellpeck.naturesaura.reg;
 import de.ellpeck.naturesaura.NaturesAura;
 import net.minecraft.block.Block;
 import net.minecraft.client.renderer.block.model.ModelResourceLocation;
+import net.minecraft.creativetab.CreativeTabs;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemBlock;
 import net.minecraft.item.ItemStack;
+import net.minecraft.potion.Potion;
 import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
@@ -19,23 +21,27 @@ public final class ModRegistry {
 
     private static final List<IModItem> ALL_ITEMS = new ArrayList<>();
 
-    public static void addItemOrBlock(IModItem item) {
+    public static void add(IModItem item) {
         ALL_ITEMS.add(item);
     }
 
-    private static void registerItem(Item item, String name, boolean addCreative) {
+    private static void registerPotion(Potion potion, String name) {
+        potion.setPotionName("potion." + NaturesAura.MOD_ID + "." + name + ".name");
+
+        potion.setRegistryName(NaturesAura.MOD_ID, name);
+        ForgeRegistries.POTIONS.register(potion);
+    }
+
+    private static void registerItem(Item item, String name, CreativeTabs tab) {
         item.setTranslationKey(NaturesAura.MOD_ID + "." + name);
 
         item.setRegistryName(NaturesAura.MOD_ID, name);
         ForgeRegistries.ITEMS.register(item);
 
-        if (addCreative)
-            item.setCreativeTab(NaturesAura.CREATIVE_TAB);
-        else
-            item.setCreativeTab(null);
+        item.setCreativeTab(tab);
     }
 
-    private static void registerBlock(Block block, String name, ItemBlock item, boolean addCreative) {
+    private static void registerBlock(Block block, String name, ItemBlock item, CreativeTabs tab) {
         block.setTranslationKey(NaturesAura.MOD_ID + "." + name);
 
         block.setRegistryName(NaturesAura.MOD_ID, name);
@@ -46,17 +52,20 @@ public final class ModRegistry {
             ForgeRegistries.ITEMS.register(item);
         }
 
-        if (addCreative)
-            block.setCreativeTab(NaturesAura.CREATIVE_TAB);
-        else
-            block.setCreativeTab(null);
+        item.setCreativeTab(tab);
+    }
+
+    private static CreativeTabs getTab(IModItem item) {
+        if (item instanceof ICreativeItem)
+            return ((ICreativeItem) item).getTabToAdd();
+        return null;
     }
 
     public static void preInit(FMLPreInitializationEvent event) {
         for (IModItem item : ALL_ITEMS) {
-            if (item instanceof Item)
-                registerItem((Item) item, item.getBaseName(), item.shouldAddCreative());
-            else if (item instanceof Block) {
+            if (item instanceof Item) {
+                registerItem((Item) item, item.getBaseName(), getTab(item));
+            } else if (item instanceof Block) {
                 Block block = (Block) item;
 
                 ItemBlock itemBlock;
@@ -65,8 +74,9 @@ public final class ModRegistry {
                 else
                     itemBlock = new ItemBlock(block);
 
-                registerBlock(block, item.getBaseName(), itemBlock, item.shouldAddCreative());
-            }
+                registerBlock(block, item.getBaseName(), itemBlock, getTab(item));
+            } else if (item instanceof Potion)
+                registerPotion((Potion) item, item.getBaseName());
 
             if (item instanceof IModelProvider) {
                 Map<ItemStack, ModelResourceLocation> models = ((IModelProvider) item).getModelLocations();

src/main/resources/assets/naturesaura/lang/en_US.lang

@@ -109,3 +109,5 @@ advancement.naturesaura.sky_ingot=Sturdy and light
 advancement.naturesaura.sky_ingot.desc=Create an Ingot of the Skies using the Offering to the Gods
 
 command.naturesaura.aura.usage=/naaura <action> <amount> <range>
+
+potion.naturesaura.breathless.name=Breathless

src/main/resources/assets/naturesaura/patchouli_books/book/en_us/entries/effects/breathlessness.json

@@ -0,0 +1,12 @@
+{
+    "name": "Breathlessness",
+    "icon": "minecraft:wool",
+    "category": "effects",
+    "advancement": "naturesaura:furnace_heater",
+    "pages": [
+        {
+            "type": "text",
+            "text": "The removal of $(aura) from an area not only has an effect on plantlife around the effected area, but also on creatures that require $(item)oxygen$() to breathe. These creatures will quickly notice that, the more $(aura) is drained, the less easy it becomes to breathe: Their lungs will start producing an acute pain that stings in irregular intervals, and it becomes severely harder to regenerate health."
+        }
+    ]
+}