Forge 1.12.2 核心改装：java.lang.ClassCircularityError
Forge 1.12.2 Coremodding: java.lang.ClassCircularityError
我尝试在 1.12.2 Forge 上制作一个核心mod 以修补失落之城 mod 中一些丢失的东西。 （来源：https://github.com/McJtyMods/LostCities/blob/1.12/src/main/java/mcjty/lostcities/dimensions/world/lost/BuildingInfo.java）
我和一个朋友写了这个LostCitiesClassTransformer.java:
package com.seemdmax.lcpatches;
import static org.objectweb.asm.Opcodes.ALOAD;
import static org.objectweb.asm.Opcodes.GETSTATIC;
import static org.objectweb.asm.Opcodes.IFEQ;
import static org.objectweb.asm.Opcodes.IFGT;
import static org.objectweb.asm.Opcodes.ILOAD;
import static org.objectweb.asm.Opcodes.INVOKEINTERFACE;
import static org.objectweb.asm.Opcodes.INVOKESTATIC;
import static org.objectweb.asm.Opcodes.INVOKEVIRTUAL;
import java.util.Arrays;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.Type;
import org.objectweb.asm.tree.AbstractInsnNode;
import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.InsnList;
import org.objectweb.asm.tree.JumpInsnNode;
import org.objectweb.asm.tree.LabelNode;
import org.objectweb.asm.tree.MethodInsnNode;
import org.objectweb.asm.tree.MethodNode;
import org.objectweb.asm.tree.VarInsnNode;
import mcjty.lostcities.api.ILostCityBuilding;
import mcjty.lostcities.dimensions.world.lost.BuildingInfo;
import net.minecraft.launchwrapper.IClassTransformer;
public class LostCitiesClassTransformer implements IClassTransformer {
private static final String[] classesBeingTransformed = { "mcjty.lostcities.dimensions.world.lost.BuildingInfo" };
@Override
public byte[] transform(String name, String transformedName, byte[] classBeingTransformed) {
boolean isObfuscated = !name.equals(transformedName);
int index = Arrays.asList(classesBeingTransformed).indexOf(transformedName);
return index != -1 ? transform(index, classBeingTransformed, isObfuscated) : classBeingTransformed;
}
private static byte[] transform(int index, byte[] classBeingTransformed, boolean isObfuscated) {
System.out.println("Transform " + classesBeingTransformed[index] + " got called!");
try {
ClassNode classNode = new ClassNode();
ClassReader classReader = new ClassReader(classBeingTransformed);
classReader.accept(classNode, 0);
System.out.println("Transforming " + classesBeingTransformed[index] + " Is Obf: " + isObfuscated);
switch (index) {
case 0:
transformLCCellars(classNode, isObfuscated);
break;
}
ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
classNode.accept(classWriter);
return classWriter.toByteArray();
} catch (Exception e) {
e.printStackTrace();
}
return classBeingTransformed;
}
private static void transformLCCellars(ClassNode buildingInfoClass, boolean isObfuscated) {
final String BUILDING_INFO = isObfuscated ? "<init>" : "<init>";
final String BUILDING_INFO_DESC = isObfuscated
? "(IILmcjty/lostcities/dimensions/world/LostCityChunkGenerator;)V"
: "(IILmcjty/lostcities/dimensions/world/LostCityChunkGenerator;)V";
for (MethodNode method : buildingInfoClass.methods) {
if (method.name.equals(BUILDING_INFO) && method.desc.equals(BUILDING_INFO_DESC)) {
System.out.println("Found method in BuildingInfo to transform");
AbstractInsnNode targetNode = null;
for (AbstractInsnNode instruction : method.instructions.toArray()) {
if (instruction.getOpcode() == ILOAD) {
if (((VarInsnNode) instruction).var == 13 & instruction.getNext().getOpcode() == IFGT) {
System.out.println("Matched");
targetNode = instruction;
break;
}
}
}
if (targetNode != null) {
System.out.println("Target Node valid");
LabelNode newLabelNode = new LabelNode();
InsnList toInsert = new InsnList();
toInsert.add(new VarInsnNode(ALOAD, 0));
toInsert.add(new MethodInsnNode(INVOKEVIRTUAL, Type.getInternalName(BuildingInfo.class),
"getBuilding", "()Lmcjty/lostcities/api/ILostCityBuilding", false));
toInsert.add(new MethodInsnNode(INVOKEINTERFACE, Type.getInternalName(ILostCityBuilding.class),
"getMinCellars", "()I", false));
toInsert.add(
new MethodInsnNode(INVOKESTATIC, Type.getInternalName(Math.class), "max", "(II)I", false));
method.instructions.insertBefore(targetNode, toInsert);
System.out.println("Transform done!");
} else {
System.out.println("Something went wrong transforming BuildingInfo!");
}
}
}
}
}
我们要修补的原始代码（字节码大纲）：
L101
LINENUMBER 764 L101
ALOAD 0
GETFIELD mcjty/lostcities/dimensions/world/lost/BuildingInfo.profile : Lmcjty/lostcities/config/LostCityProfile;
GETFIELD mcjty/lostcities/config/LostCityProfile.BUILDING_MINCELLARS : I
ILOAD 13
IFGT L102
ICONST_0
GOTO L103
L102
FRAME FULL [mcjty/lostcities/dimensions/world/lost/BuildingInfo I I mcjty/lostcities/dimensions/world/LostCityChunkGenerator mcjty/lostcities/api/LostChunkCharacteristics java/util/Random I mcjty/lostcities/dimensions/world/lost/cityassets/CityStyle mcjty/lostcities/dimensions/world/lost/cityassets/PredefinedCity$PredefinedBuilding F I I I I] [I]
ALOAD 5
ILOAD 13
INVOKEVIRTUAL java/util/Random.nextInt (I)I
L103
FRAME FULL [mcjty/lostcities/dimensions/world/lost/BuildingInfo I I mcjty/lostcities/dimensions/world/LostCityChunkGenerator mcjty/lostcities/api/LostChunkCharacteristics java/util/Random I mcjty/lostcities/dimensions/world/lost/cityassets/CityStyle mcjty/lostcities/dimensions/world/lost/cityassets/PredefinedCity$PredefinedBuilding F I I I I] [I I]
IADD
ISTORE 14
L104
LINENUMBER 765 L104
ALOAD 0
INVOKEVIRTUAL mcjty/lostcities/dimensions/world/lost/BuildingInfo.getMaxHighwayLevel ()I
IFLT L105
L167
LOCALVARIABLE topleft Lmcjty/lostcities/dimensions/world/lost/BuildingInfo; L58 L73 8
LOCALVARIABLE reldest F L96 L94 13
LOCALVARIABLE predefinedBuilding Lmcjty/lostcities/dimensions/world/lost/cityassets/PredefinedCity$PredefinedBuilding; L75 L74 8
LOCALVARIABLE cityFactor F L85 L74 9
LOCALVARIABLE maxfloors I L86 L74 10
LOCALVARIABLE f I L87 L74 11
LOCALVARIABLE minfloors I L91 L74 12
LOCALVARIABLE maxcellars I L101 L74 13
LOCALVARIABLE fb I L104 L74 14
LOCALVARIABLE r F L115 L74 15
LOCALVARIABLE conditionContext Lmcjty/lostcities/dimensions/world/lost/cityassets/ConditionContext; L130 L140 10
LOCALVARIABLE randomPart Ljava/lang/String; L131 L140 11
LOCALVARIABLE i I L127 L128 9
LOCALVARIABLE this Lmcjty/lostcities/dimensions/world/lost/BuildingInfo; L0 L167 0
LOCALVARIABLE chunkX I L0 L167 1
LOCALVARIABLE chunkZ I L0 L167 2
LOCALVARIABLE provider Lmcjty/lostcities/dimensions/world/LostCityChunkGenerator; L0 L167 3
LOCALVARIABLE characteristics Lmcjty/lostcities/api/LostChunkCharacteristics; L31 L167 4
LOCALVARIABLE rand Ljava/util/Random; L37 L167 5
LOCALVARIABLE b Z L39 L167 6
LOCALVARIABLE cs Lmcjty/lostcities/dimensions/world/lost/cityassets/CityStyle; L55 L167 7
LOCALVARIABLE building Lmcjty/lostcities/dimensions/world/lost/cityassets/Building; L126 L167 8
MAXSTACK = 14
MAXLOCALS = 16
包含我们修复的字节码大纲：
L101
LINENUMBER 764 L101
ALOAD 0
GETFIELD mcjty/lostcities/dimensions/world/lost/BuildingInfo.profile : Lmcjty/lostcities/config/LostCityProfile;
GETFIELD mcjty/lostcities/config/LostCityProfile.BUILDING_MINCELLARS : I
ALOAD 0
INVOKEVIRTUAL mcjty/lostcities/dimensions/world/lost/BuildingInfo.getBuilding ()Lmcjty/lostcities/api/ILostCityBuilding
INVOKEINTERFACE mcjty/lostcities/api/ILostCityBuilding.getMinCellars ()I
INVOKESTATIC java/lang/Math.max (II)I
ILOAD 13
IFGT L102
ICONST_0
GOTO L103
L102
FRAME FULL [mcjty/lostcities/dimensions/world/lost/BuildingInfo I I mcjty/lostcities/dimensions/world/LostCityChunkGenerator mcjty/lostcities/api/LostChunkCharacteristics java/util/Random I mcjty/lostcities/dimensions/world/lost/cityassets/CityStyle mcjty/lostcities/dimensions/world/lost/cityassets/PredefinedCity$PredefinedBuilding F I I I I] [I]
ALOAD 5
ILOAD 13
L104
LINENUMBER 765 L104
INVOKEVIRTUAL java/util/Random.nextInt (I)I
L103
FRAME FULL [mcjty/lostcities/dimensions/world/lost/BuildingInfo I I mcjty/lostcities/dimensions/world/LostCityChunkGenerator mcjty/lostcities/api/LostChunkCharacteristics java/util/Random I mcjty/lostcities/dimensions/world/lost/cityassets/CityStyle mcjty/lostcities/dimensions/world/lost/cityassets/PredefinedCity$PredefinedBuilding F I I I I] [I I]
IADD
ISTORE 14
...
L168
LOCALVARIABLE topleft Lmcjty/lostcities/dimensions/world/lost/BuildingInfo; L58 L73 8
LOCALVARIABLE reldest F L96 L94 13
LOCALVARIABLE predefinedBuilding Lmcjty/lostcities/dimensions/world/lost/cityassets/PredefinedCity$PredefinedBuilding; L75 L74 8
LOCALVARIABLE cityFactor F L85 L74 9
LOCALVARIABLE maxfloors I L86 L74 10
LOCALVARIABLE f I L87 L74 11
LOCALVARIABLE minfloors I L91 L74 12
LOCALVARIABLE maxcellars I L101 L74 13
LOCALVARIABLE fb I L105 L74 14
LOCALVARIABLE r F L116 L74 15
LOCALVARIABLE conditionContext Lmcjty/lostcities/dimensions/world/lost/cityassets/ConditionContext; L131 L141 10
LOCALVARIABLE randomPart Ljava/lang/String; L132 L141 11
LOCALVARIABLE i I L128 L129 9
LOCALVARIABLE this Lmcjty/lostcities/dimensions/world/lost/BuildingInfo; L0 L168 0
LOCALVARIABLE chunkX I L0 L168 1
LOCALVARIABLE chunkZ I L0 L168 2
LOCALVARIABLE provider Lmcjty/lostcities/dimensions/world/LostCityChunkGenerator; L0 L168 3
LOCALVARIABLE characteristics Lmcjty/lostcities/api/LostChunkCharacteristics; L31 L168 4
LOCALVARIABLE rand Ljava/util/Random; L37 L168 5
LOCALVARIABLE b Z L39 L168 6
LOCALVARIABLE cs Lmcjty/lostcities/dimensions/world/lost/cityassets/CityStyle; L55 L168 7
LOCALVARIABLE building Lmcjty/lostcities/dimensions/world/lost/cityassets/Building; L127 L168 8
MAXSTACK = 14
MAXLOCALS = 16
我们得到的 Stacktrace：
net.minecraft.util.ReportedException: Exception generating new chunk
at net.minecraft.world.WorldServer.initialize(WorldServer.java:930) ~[WorldServer.class:?]
at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:124) ~[IntegratedServer.class:?]
at net.minecraft.server.integrated.IntegratedServer.init(IntegratedServer.java:160) ~[IntegratedServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:552) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_281]
Caused by: java.lang.NoClassDefFoundError: mcjty/lostcities/dimensions/world/lost/BuildingInfo
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
Caused by: java.lang.ClassNotFoundException: mcjty.lostcities.dimensions.world.lost.BuildingInfo
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_281]
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer com.seemdmax.lcpatches.LostCitiesClassTransformer@1bec3ef7 from coremod Lost Cities Patches
at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:260) ~[forgeSrc-1.12.2-14.23.5.2847.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_281]
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
Caused by: java.lang.ClassCircularityError: mcjty/lostcities/dimensions/world/lost/BuildingInfo
at com.seemdmax.lcpatches.LostCitiesClassTransformer.transformLCCellars(LostCitiesClassTransformer.java:100) ~[bin/:?]
at com.seemdmax.lcpatches.LostCitiesClassTransformer.transform(LostCitiesClassTransformer.java:55) ~[bin/:?]
at com.seemdmax.lcpatches.LostCitiesClassTransformer.transform(LostCitiesClassTransformer.java:39) ~[bin/:?]
at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:256) ~[forgeSrc-1.12.2-14.23.5.2847.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_281]
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
我们尝试了什么：
我们尝试使用不同的方式获得建筑物，例如使用 GETFIELD。错误保持不变。
如有任何帮助，我们将不胜感激。如果您需要了解更多详细信息，请随时询问。提前致谢。
编辑：
对字符串进行硬编码后，我得到了另一个 Stacktrace。这是否仍然与我在 ASM 上做错了什么有关？
net.minecraft.util.ReportedException: Exception generating new chunk
at net.minecraft.world.WorldServer.initialize(WorldServer.java:930) ~[WorldServer.class:?]
at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:124) ~[IntegratedServer.class:?]
at net.minecraft.server.integrated.IntegratedServer.init(IntegratedServer.java:160) ~[IntegratedServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:552) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_281]
Caused by: java.lang.NoClassDefFoundError: mcjty/lostcities/dimensions/world/lost/BuildingInfo
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
Caused by: java.lang.ClassNotFoundException: mcjty.lostcities.dimensions.world.lost.BuildingInfo
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_281]
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: 41
at org.objectweb.asm.Type.getType(Type.java:490) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.Type.getReturnType(Type.java:384) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.commons.Remapper.mapMethodDesc(Remapper.java:125) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.commons.RemappingMethodAdapter.doVisitMethodInsn(RemappingMethodAdapter.java:157) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.commons.RemappingMethodAdapter.visitMethodInsn(RemappingMethodAdapter.java:143) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.ClassReader.readCode(ClassReader.java:1496) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.ClassReader.readMethod(ClassReader.java:1032) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.ClassReader.accept(ClassReader.java:708) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.ClassReader.accept(ClassReader.java:521) ~[asm-debug-all-5.2.jar:5.2]
at net.minecraftforge.fml.common.asm.transformers.DeobfuscationTransformer.transform(DeobfuscationTransformer.java:76) ~[forgeSrc-1.12.2-14.23.5.2847.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_281]
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
问题是你Type.getInternalName(BuildingInfo.class)。这正是您在加载时尝试转换的 class，因此您通过以需要加载它的方式使用它来创建循环引用。您需要在那里硬编码字符串 "mcjty/lostcities/dimensions/world/lost/BuildingInfo"。
此外，在"()Lmcjty/lostcities/api/ILostCityBuilding"中，它应该在末尾有一个分号，因此将其更改为"()Lmcjty/lostcities/api/ILostCityBuilding;"。
最后需要把new MethodInsnNode(INVOKEINTERFACE, Type.getInternalName(ILostCityBuilding.class), "getMinCellars", "()I", false));中的false改成true，因为它其实是一个接口方法
我尝试在 1.12.2 Forge 上制作一个核心mod 以修补失落之城 mod 中一些丢失的东西。 （来源：https://github.com/McJtyMods/LostCities/blob/1.12/src/main/java/mcjty/lostcities/dimensions/world/lost/BuildingInfo.java）
我和一个朋友写了这个LostCitiesClassTransformer.java:
package com.seemdmax.lcpatches;
import static org.objectweb.asm.Opcodes.ALOAD;
import static org.objectweb.asm.Opcodes.GETSTATIC;
import static org.objectweb.asm.Opcodes.IFEQ;
import static org.objectweb.asm.Opcodes.IFGT;
import static org.objectweb.asm.Opcodes.ILOAD;
import static org.objectweb.asm.Opcodes.INVOKEINTERFACE;
import static org.objectweb.asm.Opcodes.INVOKESTATIC;
import static org.objectweb.asm.Opcodes.INVOKEVIRTUAL;
import java.util.Arrays;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.Type;
import org.objectweb.asm.tree.AbstractInsnNode;
import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.InsnList;
import org.objectweb.asm.tree.JumpInsnNode;
import org.objectweb.asm.tree.LabelNode;
import org.objectweb.asm.tree.MethodInsnNode;
import org.objectweb.asm.tree.MethodNode;
import org.objectweb.asm.tree.VarInsnNode;
import mcjty.lostcities.api.ILostCityBuilding;
import mcjty.lostcities.dimensions.world.lost.BuildingInfo;
import net.minecraft.launchwrapper.IClassTransformer;
public class LostCitiesClassTransformer implements IClassTransformer {
private static final String[] classesBeingTransformed = { "mcjty.lostcities.dimensions.world.lost.BuildingInfo" };
@Override
public byte[] transform(String name, String transformedName, byte[] classBeingTransformed) {
boolean isObfuscated = !name.equals(transformedName);
int index = Arrays.asList(classesBeingTransformed).indexOf(transformedName);
return index != -1 ? transform(index, classBeingTransformed, isObfuscated) : classBeingTransformed;
}
private static byte[] transform(int index, byte[] classBeingTransformed, boolean isObfuscated) {
System.out.println("Transform " + classesBeingTransformed[index] + " got called!");
try {
ClassNode classNode = new ClassNode();
ClassReader classReader = new ClassReader(classBeingTransformed);
classReader.accept(classNode, 0);
System.out.println("Transforming " + classesBeingTransformed[index] + " Is Obf: " + isObfuscated);
switch (index) {
case 0:
transformLCCellars(classNode, isObfuscated);
break;
}
ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
classNode.accept(classWriter);
return classWriter.toByteArray();
} catch (Exception e) {
e.printStackTrace();
}
return classBeingTransformed;
}
private static void transformLCCellars(ClassNode buildingInfoClass, boolean isObfuscated) {
final String BUILDING_INFO = isObfuscated ? "<init>" : "<init>";
final String BUILDING_INFO_DESC = isObfuscated
? "(IILmcjty/lostcities/dimensions/world/LostCityChunkGenerator;)V"
: "(IILmcjty/lostcities/dimensions/world/LostCityChunkGenerator;)V";
for (MethodNode method : buildingInfoClass.methods) {
if (method.name.equals(BUILDING_INFO) && method.desc.equals(BUILDING_INFO_DESC)) {
System.out.println("Found method in BuildingInfo to transform");
AbstractInsnNode targetNode = null;
for (AbstractInsnNode instruction : method.instructions.toArray()) {
if (instruction.getOpcode() == ILOAD) {
if (((VarInsnNode) instruction).var == 13 & instruction.getNext().getOpcode() == IFGT) {
System.out.println("Matched");
targetNode = instruction;
break;
}
}
}
if (targetNode != null) {
System.out.println("Target Node valid");
LabelNode newLabelNode = new LabelNode();
InsnList toInsert = new InsnList();
toInsert.add(new VarInsnNode(ALOAD, 0));
toInsert.add(new MethodInsnNode(INVOKEVIRTUAL, Type.getInternalName(BuildingInfo.class),
"getBuilding", "()Lmcjty/lostcities/api/ILostCityBuilding", false));
toInsert.add(new MethodInsnNode(INVOKEINTERFACE, Type.getInternalName(ILostCityBuilding.class),
"getMinCellars", "()I", false));
toInsert.add(
new MethodInsnNode(INVOKESTATIC, Type.getInternalName(Math.class), "max", "(II)I", false));
method.instructions.insertBefore(targetNode, toInsert);
System.out.println("Transform done!");
} else {
System.out.println("Something went wrong transforming BuildingInfo!");
}
}
}
}
}
我们要修补的原始代码（字节码大纲）：
L101
LINENUMBER 764 L101
ALOAD 0
GETFIELD mcjty/lostcities/dimensions/world/lost/BuildingInfo.profile : Lmcjty/lostcities/config/LostCityProfile;
GETFIELD mcjty/lostcities/config/LostCityProfile.BUILDING_MINCELLARS : I
ILOAD 13
IFGT L102
ICONST_0
GOTO L103
L102
FRAME FULL [mcjty/lostcities/dimensions/world/lost/BuildingInfo I I mcjty/lostcities/dimensions/world/LostCityChunkGenerator mcjty/lostcities/api/LostChunkCharacteristics java/util/Random I mcjty/lostcities/dimensions/world/lost/cityassets/CityStyle mcjty/lostcities/dimensions/world/lost/cityassets/PredefinedCity$PredefinedBuilding F I I I I] [I]
ALOAD 5
ILOAD 13
INVOKEVIRTUAL java/util/Random.nextInt (I)I
L103
FRAME FULL [mcjty/lostcities/dimensions/world/lost/BuildingInfo I I mcjty/lostcities/dimensions/world/LostCityChunkGenerator mcjty/lostcities/api/LostChunkCharacteristics java/util/Random I mcjty/lostcities/dimensions/world/lost/cityassets/CityStyle mcjty/lostcities/dimensions/world/lost/cityassets/PredefinedCity$PredefinedBuilding F I I I I] [I I]
IADD
ISTORE 14
L104
LINENUMBER 765 L104
ALOAD 0
INVOKEVIRTUAL mcjty/lostcities/dimensions/world/lost/BuildingInfo.getMaxHighwayLevel ()I
IFLT L105
L167
LOCALVARIABLE topleft Lmcjty/lostcities/dimensions/world/lost/BuildingInfo; L58 L73 8
LOCALVARIABLE reldest F L96 L94 13
LOCALVARIABLE predefinedBuilding Lmcjty/lostcities/dimensions/world/lost/cityassets/PredefinedCity$PredefinedBuilding; L75 L74 8
LOCALVARIABLE cityFactor F L85 L74 9
LOCALVARIABLE maxfloors I L86 L74 10
LOCALVARIABLE f I L87 L74 11
LOCALVARIABLE minfloors I L91 L74 12
LOCALVARIABLE maxcellars I L101 L74 13
LOCALVARIABLE fb I L104 L74 14
LOCALVARIABLE r F L115 L74 15
LOCALVARIABLE conditionContext Lmcjty/lostcities/dimensions/world/lost/cityassets/ConditionContext; L130 L140 10
LOCALVARIABLE randomPart Ljava/lang/String; L131 L140 11
LOCALVARIABLE i I L127 L128 9
LOCALVARIABLE this Lmcjty/lostcities/dimensions/world/lost/BuildingInfo; L0 L167 0
LOCALVARIABLE chunkX I L0 L167 1
LOCALVARIABLE chunkZ I L0 L167 2
LOCALVARIABLE provider Lmcjty/lostcities/dimensions/world/LostCityChunkGenerator; L0 L167 3
LOCALVARIABLE characteristics Lmcjty/lostcities/api/LostChunkCharacteristics; L31 L167 4
LOCALVARIABLE rand Ljava/util/Random; L37 L167 5
LOCALVARIABLE b Z L39 L167 6
LOCALVARIABLE cs Lmcjty/lostcities/dimensions/world/lost/cityassets/CityStyle; L55 L167 7
LOCALVARIABLE building Lmcjty/lostcities/dimensions/world/lost/cityassets/Building; L126 L167 8
MAXSTACK = 14
MAXLOCALS = 16
包含我们修复的字节码大纲：
L101
LINENUMBER 764 L101
ALOAD 0
GETFIELD mcjty/lostcities/dimensions/world/lost/BuildingInfo.profile : Lmcjty/lostcities/config/LostCityProfile;
GETFIELD mcjty/lostcities/config/LostCityProfile.BUILDING_MINCELLARS : I
ALOAD 0
INVOKEVIRTUAL mcjty/lostcities/dimensions/world/lost/BuildingInfo.getBuilding ()Lmcjty/lostcities/api/ILostCityBuilding
INVOKEINTERFACE mcjty/lostcities/api/ILostCityBuilding.getMinCellars ()I
INVOKESTATIC java/lang/Math.max (II)I
ILOAD 13
IFGT L102
ICONST_0
GOTO L103
L102
FRAME FULL [mcjty/lostcities/dimensions/world/lost/BuildingInfo I I mcjty/lostcities/dimensions/world/LostCityChunkGenerator mcjty/lostcities/api/LostChunkCharacteristics java/util/Random I mcjty/lostcities/dimensions/world/lost/cityassets/CityStyle mcjty/lostcities/dimensions/world/lost/cityassets/PredefinedCity$PredefinedBuilding F I I I I] [I]
ALOAD 5
ILOAD 13
L104
LINENUMBER 765 L104
INVOKEVIRTUAL java/util/Random.nextInt (I)I
L103
FRAME FULL [mcjty/lostcities/dimensions/world/lost/BuildingInfo I I mcjty/lostcities/dimensions/world/LostCityChunkGenerator mcjty/lostcities/api/LostChunkCharacteristics java/util/Random I mcjty/lostcities/dimensions/world/lost/cityassets/CityStyle mcjty/lostcities/dimensions/world/lost/cityassets/PredefinedCity$PredefinedBuilding F I I I I] [I I]
IADD
ISTORE 14
...
L168
LOCALVARIABLE topleft Lmcjty/lostcities/dimensions/world/lost/BuildingInfo; L58 L73 8
LOCALVARIABLE reldest F L96 L94 13
LOCALVARIABLE predefinedBuilding Lmcjty/lostcities/dimensions/world/lost/cityassets/PredefinedCity$PredefinedBuilding; L75 L74 8
LOCALVARIABLE cityFactor F L85 L74 9
LOCALVARIABLE maxfloors I L86 L74 10
LOCALVARIABLE f I L87 L74 11
LOCALVARIABLE minfloors I L91 L74 12
LOCALVARIABLE maxcellars I L101 L74 13
LOCALVARIABLE fb I L105 L74 14
LOCALVARIABLE r F L116 L74 15
LOCALVARIABLE conditionContext Lmcjty/lostcities/dimensions/world/lost/cityassets/ConditionContext; L131 L141 10
LOCALVARIABLE randomPart Ljava/lang/String; L132 L141 11
LOCALVARIABLE i I L128 L129 9
LOCALVARIABLE this Lmcjty/lostcities/dimensions/world/lost/BuildingInfo; L0 L168 0
LOCALVARIABLE chunkX I L0 L168 1
LOCALVARIABLE chunkZ I L0 L168 2
LOCALVARIABLE provider Lmcjty/lostcities/dimensions/world/LostCityChunkGenerator; L0 L168 3
LOCALVARIABLE characteristics Lmcjty/lostcities/api/LostChunkCharacteristics; L31 L168 4
LOCALVARIABLE rand Ljava/util/Random; L37 L168 5
LOCALVARIABLE b Z L39 L168 6
LOCALVARIABLE cs Lmcjty/lostcities/dimensions/world/lost/cityassets/CityStyle; L55 L168 7
LOCALVARIABLE building Lmcjty/lostcities/dimensions/world/lost/cityassets/Building; L127 L168 8
MAXSTACK = 14
MAXLOCALS = 16
我们得到的 Stacktrace：
net.minecraft.util.ReportedException: Exception generating new chunk
at net.minecraft.world.WorldServer.initialize(WorldServer.java:930) ~[WorldServer.class:?]
at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:124) ~[IntegratedServer.class:?]
at net.minecraft.server.integrated.IntegratedServer.init(IntegratedServer.java:160) ~[IntegratedServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:552) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_281]
Caused by: java.lang.NoClassDefFoundError: mcjty/lostcities/dimensions/world/lost/BuildingInfo
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
Caused by: java.lang.ClassNotFoundException: mcjty.lostcities.dimensions.world.lost.BuildingInfo
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_281]
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer com.seemdmax.lcpatches.LostCitiesClassTransformer@1bec3ef7 from coremod Lost Cities Patches
at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:260) ~[forgeSrc-1.12.2-14.23.5.2847.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_281]
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
Caused by: java.lang.ClassCircularityError: mcjty/lostcities/dimensions/world/lost/BuildingInfo
at com.seemdmax.lcpatches.LostCitiesClassTransformer.transformLCCellars(LostCitiesClassTransformer.java:100) ~[bin/:?]
at com.seemdmax.lcpatches.LostCitiesClassTransformer.transform(LostCitiesClassTransformer.java:55) ~[bin/:?]
at com.seemdmax.lcpatches.LostCitiesClassTransformer.transform(LostCitiesClassTransformer.java:39) ~[bin/:?]
at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:256) ~[forgeSrc-1.12.2-14.23.5.2847.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_281]
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
我们尝试了什么： 我们尝试使用不同的方式获得建筑物，例如使用 GETFIELD。错误保持不变。
如有任何帮助，我们将不胜感激。如果您需要了解更多详细信息，请随时询问。提前致谢。
编辑： 对字符串进行硬编码后，我得到了另一个 Stacktrace。这是否仍然与我在 ASM 上做错了什么有关？
net.minecraft.util.ReportedException: Exception generating new chunk
at net.minecraft.world.WorldServer.initialize(WorldServer.java:930) ~[WorldServer.class:?]
at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:124) ~[IntegratedServer.class:?]
at net.minecraft.server.integrated.IntegratedServer.init(IntegratedServer.java:160) ~[IntegratedServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:552) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_281]
Caused by: java.lang.NoClassDefFoundError: mcjty/lostcities/dimensions/world/lost/BuildingInfo
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
Caused by: java.lang.ClassNotFoundException: mcjty.lostcities.dimensions.world.lost.BuildingInfo
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_281]
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: 41
at org.objectweb.asm.Type.getType(Type.java:490) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.Type.getReturnType(Type.java:384) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.commons.Remapper.mapMethodDesc(Remapper.java:125) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.commons.RemappingMethodAdapter.doVisitMethodInsn(RemappingMethodAdapter.java:157) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.commons.RemappingMethodAdapter.visitMethodInsn(RemappingMethodAdapter.java:143) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.ClassReader.readCode(ClassReader.java:1496) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.ClassReader.readMethod(ClassReader.java:1032) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.ClassReader.accept(ClassReader.java:708) ~[asm-debug-all-5.2.jar:5.2]
at org.objectweb.asm.ClassReader.accept(ClassReader.java:521) ~[asm-debug-all-5.2.jar:5.2]
at net.minecraftforge.fml.common.asm.transformers.DeobfuscationTransformer.transform(DeobfuscationTransformer.java:76) ~[forgeSrc-1.12.2-14.23.5.2847.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279) ~[launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_281]
at mcjty.lostcities.dimensions.world.LostCityChunkGenerator.generateChunk(LostCityChunkGenerator.java:216) ~[LostCityChunkGenerator.class:?]
at net.minecraft.world.gen.ChunkProviderServer.provideChunk(ChunkProviderServer.java:155) ~[ChunkProviderServer.class:?]
at net.minecraft.world.World.getChunkFromChunkCoords(World.java:362) ~[World.class:?]
at net.minecraft.world.World.getChunkFromBlockCoords(World.java:354) ~[World.class:?]
at net.minecraft.world.World.getBlockState(World.java:995) ~[World.class:?]
at net.minecraft.world.World.isAirBlock(World.java:279) ~[World.class:?]
at net.minecraft.world.World.getGroundAboveSeaLevel(World.java:252) ~[World.class:?]
at net.minecraft.world.WorldProvider.canCoordinateBeSpawn(WorldProvider.java:102) ~[WorldProvider.class:?]
at net.minecraft.world.WorldServer.createSpawnPosition(WorldServer.java:989) ~[WorldServer.class:?]
at net.minecraft.world.WorldServer.initialize(WorldServer.java:908) ~[WorldServer.class:?]
... 4 more
问题是你Type.getInternalName(BuildingInfo.class)。这正是您在加载时尝试转换的 class，因此您通过以需要加载它的方式使用它来创建循环引用。您需要在那里硬编码字符串 "mcjty/lostcities/dimensions/world/lost/BuildingInfo"。
此外，在"()Lmcjty/lostcities/api/ILostCityBuilding"中，它应该在末尾有一个分号，因此将其更改为"()Lmcjty/lostcities/api/ILostCityBuilding;"。
最后需要把new MethodInsnNode(INVOKEINTERFACE, Type.getInternalName(ILostCityBuilding.class), "getMinCellars", "()I", false));中的false改成true，因为它其实是一个接口方法