added inexplicable anger

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

@@ -32,6 +32,7 @@ public final class ModConfig {
     public ForgeConfigSpec.ConfigValue<Boolean> cacheRechargeEffect;
     public ForgeConfigSpec.ConfigValue<Boolean> explosionEffect;
     public ForgeConfigSpec.ConfigValue<Boolean> breathlessEffect;
+    public ForgeConfigSpec.ConfigValue<Boolean> angerEffect;
     public ForgeConfigSpec.ConfigValue<Boolean> animalEffect;
     public ForgeConfigSpec.ConfigValue<Boolean> oreEffect;
     public ForgeConfigSpec.ConfigValue<Boolean> auraBlooms;
@@ -111,6 +112,10 @@ public final class ModConfig {
                 .comment("If the Aura Imbalance effect of breathlessness if Aura levels are too low should occur")
                 .translation("config." + NaturesAura.MOD_ID + ".breathlessEffect")
                 .define("breathlessEffect", true);
+        this.angerEffect = builder
+                .comment("If the Aura Imbalance effect of passive mobs being angered if Aura levels are too low should occur")
+                .translation("config." + NaturesAura.MOD_ID + ".angerEffect")
+                .define("angerEffect", true);
         this.animalEffect = builder
                 .comment("If the Aura Imbalance effect of farm animals being affected in positive ways if Aura levels are too high should occur")
                 .translation("config." + NaturesAura.MOD_ID + ".animalEffect")
@@ -166,7 +171,7 @@ public final class ModConfig {
     }
 
     public void apply() {
-        if (!this.grassDieEffect.get() && !this.netherDecayEffect.get() && !this.explosionEffect.get() && !this.breathlessEffect.get())
+        if (!this.grassDieEffect.get() && !this.netherDecayEffect.get() && !this.explosionEffect.get() && !this.breathlessEffect.get() && !this.angerEffect.get())
             throw new IllegalStateException("Nature's Aura has detected that all negative Aura Imbalance effects are disabled in the config file. This is disallowed behavior. Please enable at least one negative effect.");
 
         try {

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

@@ -0,0 +1,80 @@
+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 net.minecraft.entity.IAngerable;
+import net.minecraft.entity.LivingEntity;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.item.ItemStack;
+import net.minecraft.item.Items;
+import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import net.minecraft.world.chunk.Chunk;
+
+import java.util.List;
+
+public class AngerEffect implements IDrainSpotEffect {
+
+    public static final ResourceLocation NAME = new ResourceLocation(NaturesAura.MOD_ID, "anger");
+
+    private AxisAlignedBB bb;
+
+    private boolean calcValues(World world, BlockPos pos, Integer spot) {
+        if (spot >= 0)
+            return false;
+        int aura = IAuraChunk.getAuraInArea(world, pos, 50);
+        if (aura > 0)
+            return false;
+        int dist = Math.min(Math.abs(aura) / 50000, 75);
+        if (dist < 10)
+            return false;
+        this.bb = new AxisAlignedBB(pos).grow(dist);
+        return true;
+    }
+
+    @Override
+    public ActiveType isActiveHere(PlayerEntity player, Chunk chunk, IAuraChunk auraChunk, BlockPos pos, Integer spot) {
+        if (!this.calcValues(player.world, pos, spot))
+            return ActiveType.INACTIVE;
+        if (!this.bb.contains(player.getPositionVec()))
+            return ActiveType.INACTIVE;
+        return ActiveType.ACTIVE;
+    }
+
+    @Override
+    public ItemStack getDisplayIcon() {
+        return new ItemStack(Items.FIRE_CHARGE);
+    }
+
+    @Override
+    public void update(World world, Chunk chunk, IAuraChunk auraChunk, BlockPos pos, Integer spot) {
+        if (world.getGameTime() % 100 != 0)
+            return;
+        if (!this.calcValues(world, pos, spot))
+            return;
+        List<LivingEntity> entities = world.getEntitiesWithinAABB(LivingEntity.class, this.bb);
+        for (LivingEntity entity : entities) {
+            if (!(entity instanceof IAngerable))
+                continue;
+            PlayerEntity player = world.getClosestPlayer(entity, 25);
+            if (player == null)
+                continue;
+            ((IAngerable) entity).setAttackTarget(player);
+        }
+    }
+
+    @Override
+    public boolean appliesHere(Chunk chunk, IAuraChunk auraChunk, IAuraType type) {
+        return ModConfig.instance.angerEffect.get();
+    }
+
+    @Override
+    public ResourceLocation getName() {
+        return NAME;
+    }
+}

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

@@ -17,6 +17,7 @@ public final class DrainSpotEffects {
         NaturesAuraAPI.DRAIN_SPOT_EFFECTS.put(OreSpawnEffect.NAME, OreSpawnEffect::new);
         NaturesAuraAPI.DRAIN_SPOT_EFFECTS.put(NetherGrassEffect.NAME, NetherGrassEffect::new);
         NaturesAuraAPI.DRAIN_SPOT_EFFECTS.put(NetherDecayEffect.NAME, NetherDecayEffect::new);
+        NaturesAuraAPI.DRAIN_SPOT_EFFECTS.put(AngerEffect.NAME, AngerEffect::new);
 
         NaturesAuraAPI.EFFECT_POWDERS.put(PlantBoostEffect.NAME, 0xc2f442);
         NaturesAuraAPI.EFFECT_POWDERS.put(CacheRechargeEffect.NAME, 0x1fb0d1);

src/main/resources/data/naturesaura/patchouli_books/book/en_us/entries/effects/anger.json

@@ -0,0 +1,12 @@
+{
+    "name": "Inexplicable Anger",
+    "icon": "minecraft:fire_charge",
+    "category": "effects",
+    "advancement": "naturesaura:negative_imbalance",
+    "pages": [
+        {
+            "type": "text",
+            "text": "When $(aura) levels get low enough in any area of any world, the increasing pressure of the environment makes it harder to contain oneself. Certain monsters, like $(item)Zombified Piglins$(), $(item)Endermen$() and other creatures that would usually only feel bothered when disturbed will instead start to $(thing)get angry$() seemingly completely out of the blue as soon as one comes close enough to them."
+        }
+    ]
+}