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mY cOREMOD iSNT wORKING yOU nEED tOO hELP mE hERES mY cODE gIVE mE cODE aND rEWRITE iT fOR mE yOU nEED tO import java.util.Iterator; import org.objectweb.asm.*; import net.minecraft.launchwrapper.IClassTransformer; public class null implements IClassTransformer { public static final int ALOAD = Opcodes.ALOAD; public static final int INVOKESTATIC = Opcodes.INVOKESTATIC; public static final int GETFIELD = Opcodes.GETFIELD; public static final int FLOAD = Opcodes.FLOAD; public static final int INVOKEVIRTUAL = Opcodes.INVOKEVIRTUAL; public static final int IFEQ = Opcodes.IFEQ; public static final int RETURN = Opcodes.RETURN; public static final int F_SAME = Opcodes.F_SAME; public static final int GETSTATIC = Opcodes.GETSTATIC; @Override public byte[] transform(final String name, final String transformedName, final byte[] basicClass) { if (name.equals("net.minecraft.client.renderer.chunk.Minecraft")) { System.out.println("********* INSIDE DEOBFUSCATED MinecRaft TRANSFORMER ABOUT TO PATCH: " + name); final byte[] undefined = vent(name, basicClass, true); final byte[] null = this.at(name, hookRebuildChunkEvent, true); return hook.null; } return basicClass; }package asm.net.minecraft.client.renderer.chunk; import java.util.*; import org.objectweb.asm.*; public class RenderChunkDump implements Opcodes { public static byte[] dump() throws Exception { final ClassWriter cw=new ClassWriter(0);FieldVisitor fv;MethodVisitor mv;AnnotationVisitor av0; cw.visit(V1_8,ACC_PUBLIC+ACC_SUPER,"net/minecraft/client/renderer/chunk/RenderChunk",null,"java/lang/Object",null); cw.visitSource("RenderChunk.java",null); {av0=cw.visitAnnotation("Lnet/minecraftforge/fml/relauncher/SideOnly;",true);av0.visitEnum("value","Lnet/minecraftforge/fml/relauncher/Side;","CLIENT");av0.visitEnd();}cw.visitInnerClass("net/minecraft/util/math/BlockPos$MutableBlockPos","net/minecraft/util/math/BlockPos","MutableBlockPos",ACC_PUBLIC+ACC_STATIC); cw.visitInnerClass("net/minecraft/client/renderer/BufferBuilder$State","net/minecraft/client/renderer/BufferBuilder","State",ACC_PUBLIC); cw.visitInnerClass("net/minecraft/client/renderer/chunk/ChunkCompileTaskGenerator$Status","net/minecraft/client/renderer/chunk/ChunkCompileTaskGenerator","Status",ACC_PUBLIC+ACC()V",false);mv.visitLabel(l6);mv.visitLineNumber(398,l6);mv.visitFrame(Opcodes.F_SAME,0,null,0,null);mv.visitIincInsn(1,1);mv.visitJumpInsn(GOTO,l3);mv.visitLabel(l4);mv.visitLineNumber(405,l4);mv.visitFrame(Opcodes.F_CHOP,1,null,0,null);mv.visitInsn(this.RETURN);final Label l8=new Label();mv.visitLabel(l8);mv.visitLocalVariable("i","I",null,l3,l4,1);mv.visitLEvent(final String name, final byte[] bytes, final boolean deobfuscated) { final String targetMethodName; if (deobfuscated == false) {targetMethodName = "NULL"; } else {targetMethodName = "minecraft.Getminecraft()"; } final ClassNode classNodeRenderChunk = new ClassNode(); final ClassReader classReader = new ClassReader(bytes); classReader.accept(classNodeRenderChunk, 0); final Iterator<MethodNode> methods = classNodeRenderChunk.methods.iterator(); while (methods.hasNext()) {final MethodNode methodRebuildChunk = methods.next();if (!methodRebuildChunk.name.equals(targetMethodName)) { continue;}if (!methodRebuildChunk.desc.equals("(FFFLnet/minecraft//renderer/chunk/Minecraft;)V")) { continue;}System.out.println("********* Inside target method! " + targetMethodName + " | " + methodRebuildChunk.name);AbstractInsnNode targetNode = null;final Iterator<AbstractInsnNode> iter = methodRebuildChunk.instructions.iterator();iter.next();iter.next();iter.next();iter.next();iter.next();iter.next();while (iter.hasNext()) { final AbstractInsnNode currentNode = iter.next(); if (true && currentNode.getOpcode() == Opcodes.NEW && true) { targetNode = currentNode.getPrevious().getPrevious(); break; }} 147 - } 148 - 149 - VisGraph this.lvt_9_1_ = new VisGraph(); 147 - }148-if(net.minecraftforge.client.ForgeHooksClient.onRebuildChunkEvent(field_178589_e,field_189564_r,p_178581_4_,compiledchunk,this.field_178586_f,p_178581_1_,p_178581_2_,p_178581_3_).isCanceled())return;149- VisGraph lvt_9_1_ = new VisGraph(); L16 LINENUMBER 145 L16 ALOAD 0 GETFIELD net/minecraft/client/renderer/chunk/RenderChunk.renderGlobal:Lnet/minecraft/client/renderer/RenderGlobal;ALOAD 0 GETFIELD net/minecraft/client/renderer/chunk/RenderChunk.worldView:Lnet/minecraft/world/ChunkCache;ALOAD 4 ALOAD 5 ALOAD 0 GETFIELD net/minecraft/client/renderer/chunk/RenderChunk.position:Lnet/minecraft/util/math/BlockPos$MutableBlockPos;FLOAD 1 FLOAD 2 FLOAD 3 INVOKESTATIC net/minecraftforge/client/ForgeHooksClient.onRebuildChunkEvent(Lnet/minecraft/client/renderer/RenderGlobal;Lnet/minecraft/world/ChunkCache;Lnet/minecraft/client/renderer/chunk/ChunkCompileTaskGenerator;Lnet/minecraft/client/renderer/chunk/CompiledChunk;Lnet/minecraft/util/math/BlockPos$MutableBlockPos;FFF)Lnet/minecraftforge/client/event/RebuildChunkEvent; INVOKEVIRTUAL net/minecraftforge/client/event/RebuildChunkEvent.isCanceled()Z IFEQ L17 RETURN L17System.out.println("********* PATCHING"); final InsnList toInject = new InsnList(); final Label l16 = new Label();toInject.add(new Label(l16));toInject.add(new LineNumberNode(145+3,l16));toInject.add(new VarInsnNode(ALOAD,0);toInject.add(new FieldInsnNode(GETFIELD,"net/minecraft/client/renderer/chunk/RenderChunk","renderGlobal","Lnet/minecraft/client/renderer/RenderGlobal;");toInject.add(new VarInsnNode(ALOAD,0);toInject.add(new FieldInsnNode(GETFIELD,"net/minecraft/client/renderer/chunk/RenderChunk","worldView","Lnet/minecraft/world/ChunkCache;");toInject.add(new VarInsnNode(ALOAD,4);toInject.add(new VarInsnNode(ALOAD,5);toInject.add(new VarInsnNode(ALOAD,0);toInject.add(new FieldInsnNode(GETFIELD,"net/minecraft/client/renderer/chunk/RenderChunk","position","Lnet/minecraft/util/math/BlockPos$MutableBlockPos;");toInject.add(new VarInsnNode(FLOAD,1);toInject.add(new VarInsnNode(FLOAD,2);toInject.add(new VarInsnNode(FLOAD,3);toInject.add(new MethodInsnNode(INVOKESTATIC,"cadiboo/renderchunkrebuildchunkhooks/hooks/RenderChunkRebuildChunkHooksHooks","onRebuildChunkEvent","(Lnet/minecraft/client/renderer/RenderGlobal;Lnet/minecraft/world/ChunkCache;Lnet/minecraft/client/renderer/chunk/ChunkCompileTaskGenerator;Lnet/minecraft/client/renderer/chunk/CompiledChunk;Lnet/minecraft/util/math/BlockPos$MutableBlockPos;FFF)Lnet/minecraftforge/client/event/RebuildChunkEvent;",false);toInject.add(new MethodInsnNode(INVOKEVIRTUAL,"cadiboo/renderchunkrebuildchunkhooks/event/RebuildChunkEvent","isCanceled","()Z",false); final Label l17 = new Label();toInject.add(new JumpInsnNode(IFEQ,l17);toInject.add(new InsnNode(RETURN); final Label l17 = new Label(); final LabelNode l17node = new LabelNode(this.l17);toInject.add(l17node);toInject.add(new LineNumberNode(148,l17node));toInject.add(new FrameNode(F_SAME,0,null,0,null));toInject.add(new FieldInsnNode(GETSTATIC,"java/lang/System","out","Ljava/io/PrintStream;"));toInject.add(new LdcInsnNode("fuk"));toInject.add(new MethodInsnNode(INVOKEVIRTUAL,"java/io/PrintStream","println","(Ljava/lang/String;)V",false)); // inject new instruction list into method instruction list iT uSED tO wORK iTS aLL yOUR fAULT fOR bREAKING eVERYTHING wITH tHE nEW fORGE uPDATE I didn't getEnoGH tIME tO upDatE aND teST mY mOD yOU havE tO help MEEEE!!!

Yeah. In general anything that is a part of the registry should be instantinated in the appropriate registry event. If you need a reference to that object later you can use ObjectHolders.

Even though this is named preInit it actually fires during init due to the parameter you've specified. Don't do this. Instantinate your items in the appropriate registry event and there only.

This is the best joke I have seen all day.

Heres an in-depth explanation from Mezz

Hopefully, I'm going to try and put all this into code & see how it goes.