taboolib.module.ai.PathfinderCreatorImpl17 does not define or inherit

[Moo-OvO]

服务端: Purpur-1.20.1-build1996

问题: 似乎是nms版本不兼容的问题，请问如何解决

SimpleAi使用

class ZombieAi(val zombie: Zombie) : SimpleAi() {
    
    private var target: Skeleton? = null
    
    override fun shouldExecute(): Boolean {
        target = zombie.world.getNearbyEntities(zombie.location, 10.0, 10.0, 10.0)
            .filterIsInstance<Skeleton>()
            .firstOrNull { it.equipment?.itemInMainHand?.type?.name?.contains("BOW") == true }
        return target != null
    }
    
    override fun updateTask() {
        target?.let { skeleton ->
            // 向目标移动
            zombie.navigationMove(skeleton, speed = 1.2)
            // 如果距离小于 2 格，发动攻击
            if (zombie.location.distance(skeleton.location) < 2.0) {
                zombie.attack(skeleton)
            }
        }
    }
    
    override fun resetTask() {
        target = null
    }
}

@SubscribeEvent
fun onMobsSpawn(e: EntitySpawnEvent) {
    if(e.entityType == EntityType.ZOMBIE) {
        (e.entity as LivingEntity).apply {
            clearGoalAi()
            addGoalAi(ZombieAi(e.entity as Zombie), 1)
        }
    }
}

问题

java.lang.AbstractMethodError: 

Receiver class com.gitee.mooovo.test.taboolib.module.ai.PathfinderCreatorImpl17 

does not define or inherit an implementation of the resolved method 'abstract boolean a()' of abstract class 

net.minecraft.world.entity.ai.goal.PathfinderGoal

[Bkm016]

不支持 Purpur

[Moo-OvO]

不支持 Purpur

谢谢，但是在使用spigot和paper时出现同样的问题

是否是我的方式出现了错误

spigot与paper报错相同

Caused by: java.lang.AbstractMethodError: Receiver class com.gitee.mooovo.test.taboolib.module.ai.PathfinderCreatorImpl17 

does not define or inherit an implementation of the resolved method 'abstract boolean a()' of abstract class 

net.minecraft.world.entity.ai.goal.PathfinderGoal.

gradle.kts

dependencies {
    compileOnly("ink.ptms.core:v12001:12001:mapped")
    compileOnly(kotlin("stdlib"))
    compileOnly(fileTree("libs"))
}

[Bkm016]

@claude 咋搞

[claude[bot]]

Claude finished @Bkm016's task —— View job • claude/issue-573-20250806-1751 • Create PR ➔

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✅ Fixed PathfinderCreatorImpl17 AbstractMethodError

Todo List:

• [x] Search for PathfinderCreatorImpl17 implementation
• [x] Examine the PathfinderGoal abstract methods that need implementation
• [x] Check related implementations for reference
• [x] Fix the missing method implementation
• [x] Verify the solution addresses NMS compatibility

Problem & Solution

Root Cause: The PathfinderCreatorImpl17 class was missing the obfuscated method implementations that the Minecraft server expects. While it had the deobfuscated method names (canUse(), etc.), it was missing the obfuscated method names (a(), b(), etc.) that the server actually calls at runtime.

Fix Applied: Added all missing obfuscated methods to match the working PathfinderCreatorImpl (1.16.5 version):

• a() → shouldExecute() (the missing method from your error!)
• b() → continueExecute()
• c() → startTask()
• d() → resetTask()
• e() → updateTask()

The class now implements both obfuscated and deobfuscated method names for maximum compatibility across different server mappings.

Result

This should resolve the AbstractMethodError you were seeing with Purpur, Spigot, and Paper servers. Your ZombieAi implementation should now work correctly with the AI module.

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