ъ

README.md

@@ -4,7 +4,7 @@ This library is mainly made for my mods, buy you can use it in your mod!
 ## How to use in your mods
 Go to my [maven](https://github.com/Progames723/maven) repo
 
-### first ever mod to use JNI
+### first ever library to use JNI
 im going insane 
 
 # TODO

common/src/main/java/dev/progames723/hmmm/GMPWrapper.java

@@ -7,6 +7,8 @@
 public class GMPWrapper {
 	/**
 	 * DO NOT MODIFY DURING RUNTIME
+	 * <p>
+	 * IF MODIFIED FROM {@code false} TO {@code true} EXPECT AN IRRECOVERABLE ERROR
 	 */
 	private static boolean isSupported = true;//assume true until false
 	private boolean isCleared = false;

common/src/main/java/dev/progames723/hmmm/persistence/PersistentEntityVariable.java

@@ -0,0 +1,66 @@
+package dev.progames723.hmmm.persistence;
+
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.nbt.Tag;
+import net.minecraft.world.entity.Entity;
+
+import java.util.Random;
+
+public class PersistentEntityVariable<T extends Tag> {
+	private final T baseVariable;
+	private final Entity entity;
+	private final String name;
+	private static final String HmmmPersistent = "HmmmPersistent";
+
+	private PersistentEntityVariable(Entity entity, T baseVariable) {
+		this.entity = entity;
+		this.baseVariable = baseVariable;
+		this.name = "PersistentValue_%s".formatted(new Random().nextLong(100000000L));
+		attachToEntity();
+	}
+
+	private PersistentEntityVariable(String name, Entity entity, T baseVariable) {
+		this.entity = entity;
+		this.baseVariable = baseVariable;
+		this.name = name;
+		attachToEntity();
+	}
+
+	public Entity getEntity() {
+		return entity;
+	}
+
+	public CompoundTag getAsCompound() {
+		CompoundTag tag = new CompoundTag();
+		tag.put(name, baseVariable);
+		return tag;
+	}
+
+	private void attachToEntity() {
+		CompoundTag tag = entity.saveWithoutId(new CompoundTag());
+		tag.putString("id", entity.getEncodeId());
+		tag.put(HmmmPersistent, getAsCompound());
+	}
+
+	@SuppressWarnings("unchecked")
+	private T getVariableInEntity() {
+		return (T) entity.saveWithoutId(new CompoundTag()).getCompound(HmmmPersistent).get(name);
+	}
+
+	private void setVariableInEntity(T variable) {
+		entity.saveWithoutId(new CompoundTag()).getCompound(HmmmPersistent).put(name, variable);
+	}
+
+	public static <T extends Tag> PersistentEntityVariable<T> create(Entity entity, T variable) {
+		return new PersistentEntityVariable<>(entity, variable);
+	}
+
+	public static <T extends Tag> PersistentEntityVariable<T> create(String name, Entity entity, T variable) {
+		return new PersistentEntityVariable<>(name, entity, variable);
+	}
+
+	static class test {
+		static PersistentEntityVariable variable = PersistentEntityVariable.create(null, new ListTag());
+	}
+}