significally boost decay performance by using a Hashmap

src/datagen/java/org/dimdev/dimdoors/datagen/LimboDecayProvider.java

@@ -157,7 +157,6 @@ public class LimboDecayProvider implements DataProvider {
         createSimplePattern(new Identifier("dimdoors:jungle_wood"), JUNGLE_WOOD, JUNGLE_LOG).run(consumer);
         createSimplePattern(new Identifier("dimdoors:acacia_wood"), ACACIA_WOOD, ACACIA_LOG).run(consumer);
         createSimplePattern(new Identifier("dimdoors:dark_oak_wood"), DARK_OAK_WOOD, DARK_OAK_LOG).run(consumer);
-        createSimplePattern(new Identifier("dimdoors:bedrock"), BEDROCK, SOLID_STATIC).run(consumer);
     }
 
     private DecayPatternData turnIntoSelf(Identifier identifier, Block before) {

src/main/java/org/dimdev/dimdoors/world/decay/DecayPattern.java

@@ -1,5 +1,6 @@
 package org.dimdev.dimdoors.world.decay;
 
+import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
 import net.minecraft.nbt.NbtCompound;
 import net.minecraft.util.math.BlockPos;
@@ -8,6 +9,8 @@ import net.minecraft.world.World;
 import net.fabricmc.fabric.api.event.Event;
 import net.fabricmc.fabric.api.event.EventFactory;
 
+import java.util.Set;
+
 public class DecayPattern {
     public static final Event<EntropyEvent> ENTROPY_EVENT = EventFactory.createArrayBacked(EntropyEvent.class, (world, pos, entorpy) -> {}, entropyEvents -> (world, pos, entorpy) -> {
         for (EntropyEvent event : entropyEvents) event.entropy(world, pos, entorpy);
@@ -37,6 +40,10 @@ public class DecayPattern {
         ENTROPY_EVENT.invoker().entropy(world, pos, processor.process(world, pos, origin, target));
     }
 
+	public Set<Block> constructApplicableBlocks() {
+		return predicate.constructApplicableBlocks();
+	}
+
     public static DecayPattern.Builder builder() {
         return new DecayPattern.Builder();
     }

src/main/java/org/dimdev/dimdoors/world/decay/DecayPredicate.java

@@ -1,8 +1,10 @@
 package org.dimdev.dimdoors.world.decay;
 
+import java.util.Set;
 import java.util.function.Supplier;
 
 import com.mojang.serialization.Lifecycle;
+import net.minecraft.block.Block;
 import net.minecraft.nbt.NbtCompound;
 import org.dimdev.dimdoors.DimensionalDoorsInitializer;
 import org.dimdev.dimdoors.world.decay.predicates.SimpleDecayPredicate;
@@ -43,7 +45,12 @@ public interface DecayPredicate {
         public boolean test(World world, BlockPos pos, BlockState origin, BlockState target) {
             return false;
         }
-    };
+
+		@Override
+		public Set<Block> constructApplicableBlocks() {
+			return Set.of();
+		}
+	};
 
     static DecayPredicate deserialize(NbtCompound nbt) {
         Identifier id = Identifier.tryParse(nbt.getString("type"));
@@ -67,6 +74,8 @@ public interface DecayPredicate {
 
     boolean test(World world, BlockPos pos, BlockState origin, BlockState target);
 
+    Set<Block> constructApplicableBlocks();
+
     interface DecayPredicateType<T extends DecayPredicate> {
         DecayPredicateType<DecayPredicate> NONE_PREDICATE_TYPE = register(new Identifier("dimdoors", "none"), () -> DUMMY);
         DecayPredicateType<SimpleDecayPredicate> SIMPLE_PREDICATE_TYPE = register(new Identifier("dimdoors", SimpleDecayProcesor.KEY), SimpleDecayPredicate::new);

src/main/java/org/dimdev/dimdoors/world/decay/LimboDecay.java

@@ -6,17 +6,15 @@ import java.util.stream.Collectors;
 
 import net.fabricmc.fabric.api.resource.SimpleSynchronousResourceReloadListener;
 
+import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
 import net.minecraft.nbt.NbtCompound;
 import net.minecraft.nbt.NbtElement;
-import net.minecraft.network.packet.s2c.play.BlockBreakingProgressS2CPacket;
 import net.minecraft.predicate.entity.EntityPredicates;
 import net.minecraft.resource.ResourceManager;
 
 import net.minecraft.server.world.ServerWorld;
 import net.minecraft.sound.SoundCategory;
-import net.minecraft.sound.SoundEvent;
-import net.minecraft.sound.SoundEvents;
 import net.minecraft.util.math.Direction;
 import net.minecraft.util.registry.RegistryKey;
 import org.apache.logging.log4j.LogManager;
@@ -26,7 +24,6 @@ import org.dimdev.dimdoors.network.ExtendedServerPlayNetworkHandler;
 import org.dimdev.dimdoors.network.packet.s2c.RenderBreakBlockS2CPacket;
 import org.dimdev.dimdoors.sound.ModSoundEvents;
 import org.dimdev.dimdoors.util.ResourceUtil;
-import org.jetbrains.annotations.NotNull;
 
 import net.minecraft.util.Identifier;
 import net.minecraft.util.math.BlockPos;
@@ -68,12 +65,15 @@ public final class LimboDecay {
 	 * Checks if a block can be decayed and, if so, changes it to the next block ID along the decay sequence.
 	 */
 	private static void decayBlock(ServerWorld world, BlockPos pos, BlockState origin) {
-		@NotNull Collection<DecayPattern> patterns = DecayLoader.getInstance().getPatterns();
-
-		if(patterns.isEmpty()) return;
-
 		BlockState target = world.getBlockState(pos);
 
+		Collection<DecayPattern> patterns = DecayLoader.getInstance().getPatterns(target.getBlock());
+
+		if(patterns == null || patterns.isEmpty()) {
+			return;
+		}
+
+
 		for(DecayPattern pattern : patterns) {
 			if (!pattern.test(world, pos, origin, target)) {
 				continue;
@@ -109,7 +109,7 @@ public final class LimboDecay {
 	public static class DecayLoader implements SimpleSynchronousResourceReloadListener {
 		private static final Logger LOGGER = LogManager.getLogger();
 		private static final DecayLoader INSTANCE = new DecayLoader();
-		private List<DecayPattern> patterns = new ArrayList<>();
+		private final Map<Block, List<DecayPattern>> patterns = new HashMap();
 
 		private DecayLoader() {
 		}
@@ -121,16 +121,21 @@ public final class LimboDecay {
 		@Override
 		public void reload(ResourceManager manager) {
 			patterns.clear();
-			CompletableFuture<List<DecayPattern>> futurePatternMap = ResourceUtil.loadResourcePathToCollection(manager, "decay_patterns", ".json", new ArrayList<>(), ResourceUtil.NBT_READER.andThenReader(this::loadPattern));
+			CompletableFuture<List<DecayPattern>> futurePatternList = ResourceUtil.loadResourcePathToCollection(manager, "decay_patterns", ".json", new ArrayList<>(), ResourceUtil.NBT_READER.andThenReader(this::loadPattern));
-			patterns = futurePatternMap.join();
+			for (DecayPattern pattern : futurePatternList.join()) {
+				for (Block block : pattern.constructApplicableBlocks()) {
+					patterns.computeIfAbsent(block, (b) -> new ArrayList<>());
+					patterns.get(block).add(pattern);
+				}
+			}
 		}
 
 		private DecayPattern loadPattern(NbtElement nbt, Identifier ignored) {
 			return DecayPattern.deserialize((NbtCompound) nbt);
 		}
 
-		public @NotNull Collection<DecayPattern> getPatterns() {
+		public Collection<DecayPattern> getPatterns(Block block) {
-			return patterns;
+			return patterns.get(block);
 		}
 
 		@Override

src/main/java/org/dimdev/dimdoors/world/decay/predicates/SimpleDecayPredicate.java

@@ -13,6 +13,8 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.registry.Registry;
 import net.minecraft.world.World;
 
+import java.util.Set;
+
 public class SimpleDecayPredicate implements DecayPredicate {
     public static final String KEY = "simple";
 
@@ -54,7 +56,12 @@ public class SimpleDecayPredicate implements DecayPredicate {
         return state.getBlock() == block;
     }
 
-    public static Builder builder() {
+	@Override
+	public Set<Block> constructApplicableBlocks() {
+		return Set.of(block);
+	}
+
+	public static Builder builder() {
         return new Builder();
     }