diff --git a/src/main/java/ru/bclib/BCLib.java b/src/main/java/ru/bclib/BCLib.java
index 5c30710d..1189f4e9 100644
--- a/src/main/java/ru/bclib/BCLib.java
+++ b/src/main/java/ru/bclib/BCLib.java
@@ -1,6 +1,8 @@
 package ru.bclib;
 
+import net.fabricmc.api.EnvType;
 import net.fabricmc.api.ModInitializer;
+import net.fabricmc.loader.api.FabricLoader;
 import ru.bclib.util.Logger;
 
 public class BCLib implements ModInitializer {
@@ -9,4 +11,12 @@ public class BCLib implements ModInitializer {
 	
 	@Override
 	public void onInitialize() {}
+	
+	public static boolean isDevEnvironment() {
+		return FabricLoader.getInstance().isDevelopmentEnvironment();
+	}
+	
+	public static boolean isClient() {
+		return FabricLoader.getInstance().getEnvironmentType() == EnvType.CLIENT;
+	}
 }
diff --git a/src/main/java/ru/bclib/config/CategoryConfig.java b/src/main/java/ru/bclib/config/CategoryConfig.java
new file mode 100644
index 00000000..ae2fb2e2
--- /dev/null
+++ b/src/main/java/ru/bclib/config/CategoryConfig.java
@@ -0,0 +1,10 @@
+package ru.bclib.config;
+
+public class CategoryConfig extends IdConfig {
+
+	public CategoryConfig(String modID, String group) {
+		super(modID, group, (id, category) -> {
+			return new ConfigKey(id.getPath(), id.getNamespace(), category);
+		});
+	}
+}
diff --git a/src/main/java/ru/bclib/config/Config.java b/src/main/java/ru/bclib/config/Config.java
new file mode 100644
index 00000000..968c45d7
--- /dev/null
+++ b/src/main/java/ru/bclib/config/Config.java
@@ -0,0 +1,153 @@
+package ru.bclib.config;
+
+import org.jetbrains.annotations.Nullable;
+
+import ru.bclib.BCLib;
+import ru.bclib.config.ConfigKeeper.BooleanEntry;
+import ru.bclib.config.ConfigKeeper.Entry;
+import ru.bclib.config.ConfigKeeper.FloatEntry;
+import ru.bclib.config.ConfigKeeper.IntegerEntry;
+import ru.bclib.config.ConfigKeeper.RangeEntry;
+import ru.bclib.config.ConfigKeeper.StringEntry;
+
+public abstract class Config {
+	protected final ConfigKeeper keeper;
+	
+	protected abstract void registerEntries();
+	
+	public Config(String modID, String group) {
+		this.keeper = new ConfigKeeper(modID, group);
+		this.registerEntries();
+	}
+	
+	public void saveChanges() {
+		this.keeper.save();
+	}
+	
+	@Nullable
+	public <T, E extends Entry<T>> E getEntry(ConfigKey key, Class<E> type) {
+		return this.keeper.getEntry(key, type);
+	}
+	
+	@Nullable
+	public <T, E extends Entry<T>> T getDefault(ConfigKey key, Class<E> type) {
+		Entry<T> entry = keeper.getEntry(key, type);
+		return entry != null ? entry.getDefault() : null;
+	}
+	
+	protected String getString(ConfigKey key, String defaultValue) {
+		String str = keeper.getValue(key, StringEntry.class);
+		if (str == null) {
+			StringEntry entry = keeper.registerEntry(key, new StringEntry(defaultValue));
+			return entry.getValue();
+		}
+		return str != null ? str : defaultValue;
+	}
+	
+	protected String getString(ConfigKey key) {
+		String str = keeper.getValue(key, StringEntry.class);
+		return str != null ? str : "";
+	}
+	
+	protected boolean setString(ConfigKey key, String value) {
+		try {
+			StringEntry entry = keeper.getEntry(key, StringEntry.class);
+			if (entry == null) return false;
+			entry.setValue(value);
+			return true;
+		} catch (NullPointerException ex) {
+			BCLib.LOGGER.catching(ex);
+		}
+		return false;
+	}
+	
+	protected int getInt(ConfigKey key, int defaultValue) {
+		Integer val = keeper.getValue(key, IntegerEntry.class);		
+		if (val == null) {
+			IntegerEntry entry = keeper.registerEntry(key, new IntegerEntry(defaultValue));
+			return entry.getValue();
+		}
+		return val != null ? val : defaultValue;
+	}
+	
+	protected int getInt(ConfigKey key) {
+		Integer val = keeper.getValue(key, IntegerEntry.class);		
+		return val != null ? val : 0;
+	}
+	
+	protected boolean setInt(ConfigKey key, int value) {
+		try {
+			IntegerEntry entry = keeper.getEntry(key, IntegerEntry.class);
+			if (entry == null) return false;
+			entry.setValue(value);
+			return true;
+		} catch (NullPointerException ex) {
+			BCLib.LOGGER.catching(ex);
+		}
+		return false;
+	}
+	
+	protected <T extends Comparable<T>, RE extends RangeEntry<T>> boolean setRanged(ConfigKey key, T value, Class<RE> type) {
+		try {
+			RangeEntry<T> entry = keeper.getEntry(key, type);
+			if (entry == null) return false;
+			entry.setValue(value);
+			return true;
+		} catch (NullPointerException | ClassCastException ex) {
+			BCLib.LOGGER.catching(ex);
+		}
+		return false;
+	}
+	
+	protected float getFloat(ConfigKey key, float defaultValue) {
+		Float val = keeper.getValue(key, FloatEntry.class);
+		if (val == null) {
+			FloatEntry entry = keeper.registerEntry(key, new FloatEntry(defaultValue));
+			return entry.getValue();
+		}
+		return val;
+	}
+	
+	protected float getFloat(ConfigKey key) {
+		Float val = keeper.getValue(key, FloatEntry.class);
+		return val != null ? val : 0.0F;
+	}
+	
+	protected boolean setFloat(ConfigKey key, float value) {
+		try {
+			FloatEntry entry = keeper.getEntry(key, FloatEntry.class);
+			if (entry == null) return false;
+			entry.setValue(value);
+			return true;
+		} catch (NullPointerException ex) {
+			BCLib.LOGGER.catching(ex);
+		}
+		return false;
+	}
+	
+	protected boolean getBoolean(ConfigKey key, boolean defaultValue) {
+		Boolean val = keeper.getValue(key, BooleanEntry.class);
+		if (val == null) {
+			BooleanEntry entry = keeper.registerEntry(key, new BooleanEntry(defaultValue));
+			return entry.getValue();
+		}
+		return val;
+	}
+	
+	protected boolean getBoolean(ConfigKey key) {
+		Boolean val = keeper.getValue(key, BooleanEntry.class);
+		return val != null ? val : false;
+	}
+	
+	protected boolean setBoolean(ConfigKey key, boolean value) {
+		try {
+			BooleanEntry entry = keeper.getEntry(key, BooleanEntry.class);
+			if (entry == null) return false;
+			entry.setValue(value);
+			return true;
+		} catch (NullPointerException ex) {
+			BCLib.LOGGER.catching(ex);
+		}
+		return false;
+	}
+}
diff --git a/src/main/java/ru/bclib/config/ConfigKeeper.java b/src/main/java/ru/bclib/config/ConfigKeeper.java
new file mode 100644
index 00000000..0fc7f049
--- /dev/null
+++ b/src/main/java/ru/bclib/config/ConfigKeeper.java
@@ -0,0 +1,320 @@
+package ru.bclib.config;
+
+import java.lang.reflect.Type;
+import java.util.Map;
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+
+import org.jetbrains.annotations.Nullable;
+
+import com.google.common.collect.Maps;
+import com.google.common.reflect.TypeToken;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+
+import net.minecraft.util.GsonHelper;
+import ru.bclib.util.JsonFactory;
+
+public final class ConfigKeeper {
+	private final Map<ConfigKey, Entry<?>> configEntries = Maps.newHashMap();
+	private final JsonObject configObject;
+	private final ConfigWriter writer;
+
+	private boolean changed = false;
+
+	public ConfigKeeper(String modID, String group) {
+		this.writer = new ConfigWriter(modID, group);
+		this.configObject = writer.load();
+	}
+
+	public void save() {
+		if (!changed) return;
+		this.writer.save();
+		this.changed = false;
+	}
+
+	private <T, E extends Entry<T>> void initializeEntry(ConfigKey key, E entry) {
+		if (configObject == null) {
+			return;
+		}
+		String[] path = key.getPath();
+		JsonObject obj = configObject;
+
+		if (!key.isRoot()) {
+			for (String group : path) {
+				JsonElement element = obj.get(group);
+				if (element == null || !element.isJsonObject()) {
+					element = new JsonObject();
+					obj.add(group, element);
+				}
+				obj = element.getAsJsonObject();
+			}
+		}
+
+		String paramKey = key.getEntry();
+		paramKey += " [default: " + entry.getDefault() + "]";
+
+		this.changed |= entry.setLocation(obj, paramKey);
+	}
+
+	private <T, E extends Entry<T>> void storeValue(E entry, T value) {
+		if (configObject == null) {
+			return;
+		}
+		T val = entry.getValue();
+		if (value.equals(val)) return;
+		entry.toJson(value);
+		this.changed = true;
+	}
+
+	private <T, E extends Entry<T>> T getValue(E entry) {
+		if (!entry.hasLocation()) {
+			return entry.getDefault();
+		}
+		return entry.fromJson();
+	}
+
+	@Nullable
+	public <T, E extends Entry<T>> E getEntry(ConfigKey key, Class<E> type) {
+		Entry<?> entry = this.configEntries.get(key);
+		if (type.isInstance(entry)) {
+			return type.cast(entry);
+		}
+		return null;
+	}
+
+	@Nullable
+	public <T, E extends Entry<T>> T getValue(ConfigKey key, Class<E> type) {
+		Entry<T> entry = this.getEntry(key, type);
+		if (entry == null) {
+			return null;
+		}
+		return entry.getValue();
+	}
+
+	public <T, E extends Entry<T>> E registerEntry(ConfigKey key, E entry) {
+		entry.setWriter(value -> this.storeValue(entry, value));
+		entry.setReader(() -> {
+			return this.getValue(entry);
+		});
+		this.initializeEntry(key, entry);
+		this.configEntries.put(key, entry);
+		return entry;
+	}
+
+	public static class BooleanEntry extends Entry<Boolean> {
+
+		public BooleanEntry(Boolean defaultValue) {
+			super(defaultValue);
+		}
+
+		@Override
+		public Boolean fromJson() {
+			return GsonHelper.getAsBoolean(location, key, defaultValue);
+		}
+
+		@Override
+		public void toJson(Boolean value) {
+			this.location.addProperty(key, value);
+		}
+	}
+
+	public static class FloatEntry extends Entry<Float> {
+
+		public FloatEntry(Float defaultValue) {
+			super(defaultValue);
+		}
+
+		@Override
+		public Float fromJson() {
+			return GsonHelper.getAsFloat(location, key, defaultValue);
+		}
+
+		@Override
+		public void toJson(Float value) {
+			this.location.addProperty(key, value);
+		}
+	}
+
+	public static class FloatRange extends RangeEntry<Float> {
+
+		public FloatRange(Float defaultValue, float minVal, float maxVal) {
+			super(defaultValue, minVal, maxVal);
+		}
+
+		@Override
+		public Float fromJson() {
+			return GsonHelper.getAsFloat(location, key, defaultValue);
+		}
+
+		@Override
+		public void toJson(Float value) {
+			this.location.addProperty(key, value);
+		}
+	}
+
+	public static class IntegerEntry extends Entry<Integer> {
+
+		public IntegerEntry(Integer defaultValue) {
+			super(defaultValue);
+		}
+
+		@Override
+		public Integer getDefault() {
+			return this.defaultValue;
+		}
+
+		@Override
+		public Integer fromJson() {
+			return GsonHelper.getAsInt(location, key, defaultValue);
+		}
+
+		@Override
+		public void toJson(Integer value) {
+			this.location.addProperty(key, value);
+		}
+	}
+
+	public static class IntegerRange extends RangeEntry<Integer> {
+
+		public IntegerRange(Integer defaultValue, int minVal, int maxVal) {
+			super(defaultValue, minVal, maxVal);
+		}
+
+		@Override
+		public Integer fromJson() {
+			return GsonHelper.getAsInt(location, key, defaultValue);
+		}
+
+		@Override
+		public void toJson(Integer value) {
+			this.location.addProperty(key, value);
+		}
+	}
+
+	public static class StringEntry extends Entry<String> {
+
+		public StringEntry(String defaultValue) {
+			super(defaultValue);
+		}
+
+		@Override
+		public String fromJson() {
+			return GsonHelper.getAsString(location, key, defaultValue);
+		}
+
+		@Override
+		public void toJson(String value) {
+			this.location.addProperty(key, value);
+		}
+
+	}
+
+	public static class EnumEntry<T extends Enum<T>> extends Entry<T> {
+
+		private final Type type;
+
+		public EnumEntry(T defaultValue) {
+			super(defaultValue);
+			TypeToken<T> token = new TypeToken<T>() {
+				private static final long serialVersionUID = 1L;
+			};
+			this.type = token.getType();
+		}
+
+		@Override
+		public T getDefault() {
+			return this.defaultValue;
+		}
+
+		@Override
+		public T fromJson() {
+			return JsonFactory.GSON.fromJson(location.get(key), type);
+		}
+
+		@Override
+		public void toJson(T value) {
+			location.addProperty(key, JsonFactory.GSON.toJson(value, type));
+		}
+	}
+
+	public static abstract class RangeEntry<T extends Comparable<T>> extends Entry<T> {
+
+		private final T min, max;
+
+		public RangeEntry(T defaultValue, T minVal, T maxVal) {
+			super(defaultValue);
+			this.min = minVal;
+			this.max = maxVal;
+		}
+
+		@Override
+		public void setValue(T value) {
+			super.setValue(value.compareTo(min) < 0 ? min : value.compareTo(max) > 0 ? max : value);
+		}
+
+		public T minValue() {
+			return this.min;
+		}
+
+		public T maxValue() {
+			return this.max;
+		}
+	}
+
+	public static abstract class Entry<T> {
+
+		protected final T defaultValue;
+		protected Consumer<T> writer;
+		protected Supplier<T> reader;
+		protected JsonObject location;
+		protected String key;
+
+		public abstract T fromJson();
+
+		public abstract void toJson(T value);
+
+		public Entry(T defaultValue) {
+			this.defaultValue = defaultValue;
+		}
+
+		protected void setWriter(Consumer<T> writer) {
+			this.writer = writer;
+		}
+
+		protected void setReader(Supplier<T> reader) {
+			this.reader = reader;
+		}
+
+		protected boolean setLocation(JsonObject location, String key) {
+			this.location = location;
+			this.key = key;
+			if (!location.has(key)) {
+				this.toJson(defaultValue);
+				return true;
+			}
+			return false;
+		}
+
+		protected boolean hasLocation() {
+			return this.location != null &&
+					this.key != null;
+		}
+
+		public T getValue() {
+			return this.reader.get();
+		}
+
+		public void setValue(T value) {
+			this.writer.accept(value);
+		}
+
+		public T getDefault() {
+			return this.defaultValue;
+		}
+
+		public void setDefault() {
+			this.setValue(defaultValue);
+		}
+	}
+}
diff --git a/src/main/java/ru/bclib/config/ConfigKey.java b/src/main/java/ru/bclib/config/ConfigKey.java
new file mode 100644
index 00000000..ed8b570d
--- /dev/null
+++ b/src/main/java/ru/bclib/config/ConfigKey.java
@@ -0,0 +1,85 @@
+package ru.bclib.config;
+
+import net.minecraft.resources.ResourceLocation;
+
+public class ConfigKey {
+	private final String path[];
+	private final String entry;
+	private final boolean root;
+	
+	public ConfigKey(String entry, String... path) {
+		this.validate(entry);
+		this.path = path;
+		this.entry = entry;
+		this.root = path.length == 0 || (path.length == 1 && path[0].isEmpty());
+	}
+	
+	public ConfigKey(String entry, ResourceLocation path) {
+		this(entry, path.getNamespace(), path.getPath());
+	}
+
+	public String[] getPath() {
+		return path;
+	}
+
+	public String getEntry() {
+		return entry;
+	}
+	
+	public boolean isRoot() {
+		return root;
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + path.hashCode();
+		result = prime * result + entry.hashCode();
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj) {
+			return true;
+		}
+		if (!(obj instanceof ConfigKey)) {
+			return false;
+		}
+		ConfigKey other = (ConfigKey) obj;
+		if (other.path.length != path.length) {
+			return false;
+		}
+		for (int i = 0; i < path.length; i++) {
+			if (!path[i].equals(other.path[i])) {
+				return false;
+			}
+		}
+		if (!entry.equals(other.entry)) {
+			return false;
+		}
+		return true;
+	}
+	
+	@Override
+	public String toString() {
+		if (root) {
+			return String.format("[root]:%s", entry);
+		}
+		String p = path[0];
+		for (int i = 1; i < path.length; i++) {
+			p += "." + path[i];
+		}
+		return String.format("%s:%s", p, entry);
+	}
+	
+	private void validate(String entry) {
+		if (entry == null) {
+			throw new NullPointerException("Config key must be not null!");
+		}
+		if (entry.isEmpty()) {
+			throw new IndexOutOfBoundsException("Config key must be not empty!");
+		}
+	}
+}
diff --git a/src/main/java/ru/bclib/config/ConfigWriter.java b/src/main/java/ru/bclib/config/ConfigWriter.java
new file mode 100644
index 00000000..ed4e125b
--- /dev/null
+++ b/src/main/java/ru/bclib/config/ConfigWriter.java
@@ -0,0 +1,63 @@
+package ru.bclib.config;
+
+import java.io.File;
+import java.nio.file.Path;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+
+import net.fabricmc.loader.api.FabricLoader;
+import ru.bclib.util.JsonFactory;
+
+public class ConfigWriter {
+	private final static Path GAME_CONFIG_DIR = FabricLoader.getInstance().getConfigDir();
+
+	private final File configFile;
+	private JsonObject configObject;
+
+	public ConfigWriter(String modID, String configFile) {
+		this.configFile = new File(new File(GAME_CONFIG_DIR.toFile(), modID), configFile + ".json");
+		File parent = this.configFile.getParentFile();
+		if (!parent.exists()) {
+			parent.mkdirs();
+		}
+		this.load();
+	}
+
+	public JsonObject getConfig() {
+		return configObject;
+	}
+
+	public void save() {
+		if (configObject == null) {
+			return;
+		}
+		save(configFile, configObject);
+	}
+
+	public JsonObject load() {
+		if (configObject == null) {
+			configObject = load(configFile);
+		}
+		return configObject;
+	}
+
+	public void save(JsonElement config) {
+		this.configObject = config.getAsJsonObject();
+		save(configFile, config);
+	}
+
+	public static JsonObject load(File configFile) {
+		return JsonFactory.getJsonObject(configFile);
+	}
+
+	public static void save(File configFile, JsonElement config) {
+		JsonFactory.storeJson(configFile, config);
+	}
+
+	public static String scrubFileName(String input) {
+		input = input.replaceAll("[/\\ ]+", "_");
+		input = input.replaceAll("[,:&\"\\|\\<\\>\\?\\*]", "_");
+		return input;
+	}
+}
diff --git a/src/main/java/ru/bclib/config/EntryConfig.java b/src/main/java/ru/bclib/config/EntryConfig.java
new file mode 100644
index 00000000..0b22de86
--- /dev/null
+++ b/src/main/java/ru/bclib/config/EntryConfig.java
@@ -0,0 +1,9 @@
+package ru.bclib.config;
+
+public class EntryConfig extends IdConfig {
+	public EntryConfig(String modID, String group) {
+		super(modID, group, (id, entry) -> {
+			return new ConfigKey(entry, id);
+		});
+	}
+}
diff --git a/src/main/java/ru/bclib/config/IdConfig.java b/src/main/java/ru/bclib/config/IdConfig.java
new file mode 100644
index 00000000..379d8551
--- /dev/null
+++ b/src/main/java/ru/bclib/config/IdConfig.java
@@ -0,0 +1,92 @@
+package ru.bclib.config;
+
+import java.util.function.BiFunction;
+
+import org.jetbrains.annotations.Nullable;
+
+import net.minecraft.resources.ResourceLocation;
+import ru.bclib.config.ConfigKeeper.Entry;
+import ru.bclib.config.ConfigKeeper.FloatRange;
+import ru.bclib.config.ConfigKeeper.IntegerRange;
+
+public class IdConfig extends Config {
+	protected final BiFunction<ResourceLocation, String, ConfigKey> keyFactory;
+	
+	public IdConfig(String modID, String group, BiFunction<ResourceLocation, String, ConfigKey> keyFactory) {
+		super(modID, group);
+		this.keyFactory = keyFactory;
+	}
+
+	@Override
+	protected void registerEntries() {}
+
+	protected ConfigKey createKey(ResourceLocation id, String key) {
+		return this.keyFactory.apply(id, key);
+	}
+
+	@Nullable
+	public <T, E extends Entry<T>> E getEntry(ResourceLocation id, String key, Class<E> type) {
+		return this.getEntry(createKey(id, key), type);
+	}
+
+	@Nullable
+	public <T, E extends Entry<T>> T getDefault(ResourceLocation id, String key, Class<E> type) {
+		return this.getDefault(createKey(id, key), type);
+	}
+
+	public String getString(ResourceLocation id, String key, String defaultValue) {
+		return this.getString(createKey(id, key), defaultValue);
+	}
+
+	public String getString(ResourceLocation id, String key) {
+		return this.getString(createKey(id, key));
+	}
+
+	public boolean setString(ResourceLocation id, String key, String value) {
+		return this.setString(createKey(id, key), value);
+	}
+
+	public int getInt(ResourceLocation id, String key, int defaultValue) {
+		return this.getInt(createKey(id, key), defaultValue);
+	}
+
+	public int getInt(ResourceLocation id, String key) {
+		return this.getInt(createKey(id, key));
+	}
+
+	public boolean setInt(ResourceLocation id, String key, int value) {
+		return this.setInt(createKey(id, key), value);
+	}
+
+	public boolean setRangedInt(ResourceLocation id, String key, int value) {
+		return this.setRanged(createKey(id, key), value, IntegerRange.class);
+	}
+	
+	public boolean setRangedFloat(ResourceLocation id, String key, float value) {
+		return this.setRanged(createKey(id, key), value, FloatRange.class);
+	}
+
+	public float getFloat(ResourceLocation id, String key, float defaultValue) {
+		return this.getFloat(createKey(id, key), defaultValue);
+	}
+
+	public float getFloat(ResourceLocation id, String key) {
+		return this.getFloat(createKey(id, key));
+	}
+
+	public boolean setFloat(ResourceLocation id, String key, float value) {
+		return this.setFloat(createKey(id, key), value);
+	}
+
+	public boolean getBoolean(ResourceLocation id, String key, boolean defaultValue) {
+		return this.getBoolean(createKey(id, key), defaultValue);
+	}
+
+	public boolean getBoolean(ResourceLocation id, String key) {
+		return this.getBoolean(createKey(id, key));
+	}
+
+	public boolean setBoolean(ResourceLocation id, String key, boolean value) {
+		return this.setBoolean(createKey(id, key), value);
+	}
+}
diff --git a/src/main/java/ru/bclib/config/PathConfig.java b/src/main/java/ru/bclib/config/PathConfig.java
new file mode 100644
index 00000000..3f7bc3e9
--- /dev/null
+++ b/src/main/java/ru/bclib/config/PathConfig.java
@@ -0,0 +1,149 @@
+package ru.bclib.config;
+
+import org.jetbrains.annotations.Nullable;
+
+import ru.bclib.config.ConfigKeeper.Entry;
+import ru.bclib.config.ConfigKeeper.FloatRange;
+import ru.bclib.config.ConfigKeeper.IntegerRange;
+
+public class PathConfig extends Config {
+
+	public PathConfig(String modID, String group) {
+		super(modID, group);
+	}
+
+	@Override
+	protected void registerEntries() {}
+	
+	protected ConfigKey createKey(String category, String key) {
+		return new ConfigKey(key, category.split("\\."));
+	}
+	
+	protected ConfigKey createKey(String key) {
+		return createKey("", key);
+	}
+	
+	@Nullable
+	public <T, E extends Entry<T>> E getEntry(String category, String key, Class<E> type) {
+		return this.getEntry(createKey(category, key), type);
+	}
+
+	@Nullable
+	public <T, E extends Entry<T>> T getDefault(String category, String key, Class<E> type) {
+		return this.getDefault(createKey(category, key), type);
+	}
+
+	public String getString(String category, String key, String defaultValue) {
+		return this.getString(createKey(category, key), defaultValue);
+	}
+
+	public String getString(String category, String key) {
+		return this.getString(createKey(category, key));
+	}
+
+	public boolean setString(String category, String key, String value) {
+		return this.setString(createKey(category, key), value);
+	}
+
+	public int getInt(String category, String key, int defaultValue) {
+		return this.getInt(createKey(category, key), defaultValue);
+	}
+
+	public int getInt(String category, String key) {
+		return this.getInt(createKey(category, key));
+	}
+
+	public boolean setInt(String category, String key, int value) {
+		return this.setInt(createKey(category, key), value);
+	}
+
+	public boolean setRangedInt(String category, String key, int value) {
+		return this.setRanged(createKey(category, key), value, IntegerRange.class);
+	}
+	
+	public boolean setRangedFloat(String category, String key, float value) {
+		return this.setRanged(createKey(category, key), value, FloatRange.class);
+	}
+
+	public float getFloat(String category, String key, float defaultValue) {
+		return this.getFloat(createKey(category, key), defaultValue);
+	}
+
+	public float getFloat(String category, String key) {
+		return this.getFloat(createKey(category, key));
+	}
+
+	public boolean setFloat(String category, String key, float value) {
+		return this.setFloat(createKey(category, key), value);
+	}
+
+	public boolean getBoolean(String category, String key, boolean defaultValue) {
+		return this.getBoolean(createKey(category, key), defaultValue);
+	}
+
+	public boolean getBoolean(String category, String key) {
+		return this.getBoolean(createKey(category, key));
+	}
+
+	public boolean setBoolean(String category, String key, boolean value) {
+		return this.setBoolean(createKey(category, key), value);
+	}
+	
+	// From Root
+	
+	public String getStringRoot(String key, String defaultValue) {
+		return this.getString(createKey(key), defaultValue);
+	}
+
+	public String getStringRoot(String key) {
+		return this.getString(createKey(key));
+	}
+
+	public boolean setStringRoot(String key, String value) {
+		return this.setString(createKey(key), value);
+	}
+
+	public int getIntRoot(String key, int defaultValue) {
+		return this.getInt(createKey(key), defaultValue);
+	}
+
+	public int getIntRoot(String key) {
+		return this.getInt(createKey(key));
+	}
+
+	public boolean setIntRoot(String key, int value) {
+		return this.setInt(createKey(key), value);
+	}
+
+	public boolean setRangedIntRoot(String key, int value) {
+		return this.setRanged(createKey(key), value, IntegerRange.class);
+	}
+	
+	public boolean setRangedFloatRoot(String key, float value) {
+		return this.setRanged(createKey(key), value, FloatRange.class);
+	}
+
+	public float getFloatRoot(String key, float defaultValue) {
+		return this.getFloat(createKey(key), defaultValue);
+	}
+
+	public float getFloatRoot(String key) {
+		return this.getFloat(createKey(key));
+	}
+
+	public boolean setFloatRoot(String key, float value) {
+		return this.setFloat(createKey(key), value);
+	}
+
+	public boolean getBooleanRoot(String key, boolean defaultValue) {
+		return this.getBoolean(createKey(key), defaultValue);
+	}
+
+	public boolean getBooleanRoot(String key) {
+		return this.getBoolean(createKey(key));
+	}
+
+	public boolean setBooleanRoot(String key, boolean value) {
+		return this.setBoolean(createKey(key), value);
+	}
+}
diff --git a/src/main/java/ru/bclib/sdf/SDF.java b/src/main/java/ru/bclib/sdf/SDF.java
index ca89f7e3..396850de 100644
--- a/src/main/java/ru/bclib/sdf/SDF.java
+++ b/src/main/java/ru/bclib/sdf/SDF.java
@@ -17,8 +17,8 @@ import net.minecraft.core.Direction;
 import net.minecraft.world.level.ServerLevelAccessor;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.phys.AABB;
-import ru.bclib.structures.StructureWorld;
 import ru.bclib.util.BlocksHelper;
+import ru.bclib.world.structures.StructureWorld;
 
 public abstract class SDF {
 	private List<Function<PosInfo, BlockState>> postProcesses = Lists.newArrayList();
diff --git a/src/main/java/ru/bclib/util/JsonFactory.java b/src/main/java/ru/bclib/util/JsonFactory.java
new file mode 100644
index 00000000..9397f32c
--- /dev/null
+++ b/src/main/java/ru/bclib/util/JsonFactory.java
@@ -0,0 +1,93 @@
+package ru.bclib.util;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+
+import ru.bclib.BCLib;
+
+public class JsonFactory {
+	public final static Gson GSON = new GsonBuilder().setPrettyPrinting().create();
+
+	public static JsonObject getJsonObject(InputStream stream) {
+		try {
+			Reader reader = new InputStreamReader(stream);
+			JsonElement json = loadJson(reader);
+			if (json != null && json.isJsonObject()) {
+				JsonObject jsonObject = json.getAsJsonObject();
+				return jsonObject != null ? jsonObject : new JsonObject();
+			}
+		}
+		catch (Exception ex) {
+			BCLib.LOGGER.catching(ex);
+		}
+		return new JsonObject();
+	}
+
+	public static JsonObject getJsonObject(File jsonFile) {
+		if (jsonFile.exists()) {
+			JsonElement json = loadJson(jsonFile);
+			if (json != null && json.isJsonObject()) {
+				JsonObject jsonObject = json.getAsJsonObject();
+				return jsonObject != null ? jsonObject : new JsonObject();
+			}
+		}
+		return new JsonObject();
+	}
+
+	public static JsonElement loadJson(File jsonFile) {
+		if (jsonFile.exists()) {
+			try (Reader reader = new FileReader(jsonFile)) {
+				return loadJson(reader);
+			}
+			catch (Exception ex) {
+				BCLib.LOGGER.catching(ex);
+			}
+		}
+		return null;
+	}
+
+	public static JsonElement loadJson(Reader reader) {
+		return GSON.fromJson(reader, JsonElement.class);
+	}
+
+	public static void storeJson(File jsonFile, JsonElement jsonObject) {
+		try (FileWriter writer = new FileWriter(jsonFile)) {
+			String json = GSON.toJson(jsonObject);
+			writer.write(json);
+			writer.flush();
+		}
+		catch (IOException ex) {
+			BCLib.LOGGER.catching(ex);
+		}
+	}
+
+	public static int getInt(JsonObject object, String member, int def) {
+		JsonElement elem = object.get(member);
+		return elem == null ? def : elem.getAsInt();
+	}
+
+	public static float getFloat(JsonObject object, String member, float def) {
+		JsonElement elem = object.get(member);
+		return elem == null ? def : elem.getAsFloat();
+	}
+
+	public static boolean getBoolean(JsonObject object, String member, boolean def) {
+		JsonElement elem = object.get(member);
+		return elem == null ? def : elem.getAsBoolean();
+	}
+
+	public static String getString(JsonObject object, String member, String def) {
+		JsonElement elem = object.get(member);
+		return elem == null ? def : elem.getAsString();
+	}
+}
diff --git a/src/main/java/ru/bclib/world/structures/BCLStructureFeature.java b/src/main/java/ru/bclib/world/structures/BCLStructureFeature.java
new file mode 100644
index 00000000..581f0b60
--- /dev/null
+++ b/src/main/java/ru/bclib/world/structures/BCLStructureFeature.java
@@ -0,0 +1,42 @@
+package ru.bclib.world.structures;
+
+import java.util.Random;
+
+import net.fabricmc.fabric.api.structure.v1.FabricStructureBuilder;
+import net.minecraft.data.BuiltinRegistries;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.level.levelgen.GenerationStep;
+import net.minecraft.world.level.levelgen.feature.ConfiguredStructureFeature;
+import net.minecraft.world.level.levelgen.feature.StructureFeature;
+import net.minecraft.world.level.levelgen.feature.configurations.NoneFeatureConfiguration;
+
+public class BCLStructureFeature {
+	private static final Random RANDOM = new Random(354);
+	private final StructureFeature<NoneFeatureConfiguration> structure;
+	private final ConfiguredStructureFeature<?, ?> featureConfigured;
+	private final GenerationStep.Decoration featureStep;
+	
+	public BCLStructureFeature(ResourceLocation id, StructureFeature<NoneFeatureConfiguration> structure, GenerationStep.Decoration step, int spacing, int separation) {
+		this.featureStep = step;
+		this.structure = FabricStructureBuilder.create(id, structure)
+		.step(step)
+		.defaultConfig(spacing, separation, RANDOM.nextInt(8192))
+		.register();
+
+		this.featureConfigured = this.structure.configured(NoneFeatureConfiguration.NONE);
+		
+		BuiltinRegistries.register(BuiltinRegistries.CONFIGURED_STRUCTURE_FEATURE, id, this.featureConfigured);
+	}
+
+	public StructureFeature<NoneFeatureConfiguration> getStructure() {
+		return structure;
+	}
+
+	public ConfiguredStructureFeature<?, ?> getFeatureConfigured() {
+		return featureConfigured;
+	}
+
+	public GenerationStep.Decoration getFeatureStep() {
+		return featureStep;
+	}
+}
diff --git a/src/main/java/ru/bclib/structures/StructureWorld.java b/src/main/java/ru/bclib/world/structures/StructureWorld.java
similarity index 95%
rename from src/main/java/ru/bclib/structures/StructureWorld.java
rename to src/main/java/ru/bclib/world/structures/StructureWorld.java
index 78b1c05f..af49651b 100644
--- a/src/main/java/ru/bclib/structures/StructureWorld.java
+++ b/src/main/java/ru/bclib/world/structures/StructureWorld.java
@@ -1,4 +1,4 @@
-package ru.bclib.structures;
+package ru.bclib.world.structures;
 
 import java.util.Map;