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Fix Mob target handling on Minecraft 26.2 #19

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Merged
slyphmp4 merged 1 commit into from
Aug 25, 2026
Merged

Fix Mob target handling on Minecraft 26.2 #19

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47 changes: 27 additions & 20 deletions src/main/java/org/cardboardpowered/mixin/world/entity/MobMixin.java
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Original file line number Diff line number Diff line change
Expand Up @@ -23,17 +23,14 @@ public abstract class MobMixin extends LivingEntity implements MobBridge, Entity
@Nullable
public LivingEntity target;

@Shadow
public abstract @Nullable LivingEntity getTarget();

protected MobMixin(EntityType<? extends LivingEntity> entityType, Level level) {
super(entityType, level);
}

@Inject(method = "setTarget", at = @At("HEAD"), cancellable = true)
public void setTargetCraftBukkit(LivingEntity livingEntity, CallbackInfo ci) {
// CraftBukkit start - fire event
boolean set = this.cardboard$setTarget(target, EntityTargetEvent.TargetReason.UNKNOWN);
public void setTargetCraftBukkit(@Nullable LivingEntity livingEntity, CallbackInfo ci) {
// CraftBukkit start - fire event for the target Minecraft is actually trying to set.
boolean set = this.cardboard$setTarget(livingEntity, EntityTargetEvent.TargetReason.UNKNOWN);
if (set) { // Let the other mods call their @Inject if set is false.
ci.cancel();
}
Expand All @@ -44,36 +41,46 @@ public void setTargetCraftBukkit(LivingEntity livingEntity, CallbackInfo ci) {
new java.util.concurrent.atomic.AtomicBoolean(false);

@Override
public boolean cardboard$setTarget(@Nullable LivingEntity target, EntityTargetEvent.@Nullable TargetReason reason) {
if (this.getTarget() == target) {
public boolean cardboard$setTarget(@Nullable LivingEntity newTarget, EntityTargetEvent.@Nullable TargetReason reason) {
// Use the raw target field here. In 26.2 Mob#getTarget() can apply validity checks,
// while Bukkit needs to compare against the actual target currently stored by Minecraft.
LivingEntity oldTarget = this.target;
if (oldTarget == newTarget) {
return false;
}

if (reason != null) {
if (reason == EntityTargetEvent.TargetReason.UNKNOWN && this.getTarget() != null && target == null) {
reason = this.getTarget().isAlive() ? EntityTargetEvent.TargetReason.FORGOT_TARGET : EntityTargetEvent.TargetReason.TARGET_DIED;
if (reason == EntityTargetEvent.TargetReason.UNKNOWN && oldTarget != null && newTarget == null) {
reason = oldTarget.isAlive()
? EntityTargetEvent.TargetReason.FORGOT_TARGET
: EntityTargetEvent.TargetReason.TARGET_DIED;
}
if (reason == EntityTargetEvent.TargetReason.UNKNOWN && cardboard$warnedUnknownTarget.compareAndSet(false, true)) {
// Fires on every generic setTarget call, i.e. constantly once mobs are active.
// Report it once per run so the signal survives without flooding the log.
((ServerLevelBridge)this.level()).getCraftServer().getLogger().log(java.util.logging.Level.WARNING,
// Some generic target acquisitions still do not expose a Bukkit reason.
// Report only the first occurrence so useful diagnostics remain without log spam.
((ServerLevelBridge) this.level()).getCraftServer().getLogger().log(java.util.logging.Level.WARNING,
"Unknown target reason, please report on the issue tracker (further occurrences suppressed)", new Exception());
}
CraftLivingEntity ctarget = null;
if (target != null) {
ctarget = (CraftLivingEntity) target.getBukkitEntity();

CraftLivingEntity craftTarget = null;
if (newTarget != null) {
craftTarget = (CraftLivingEntity) newTarget.getBukkitEntity();
}
org.bukkit.event.entity.EntityTargetLivingEntityEvent event = new org.bukkit.event.entity.EntityTargetLivingEntityEvent(this.getBukkitEntity(), ctarget, reason);

org.bukkit.event.entity.EntityTargetLivingEntityEvent event =
new org.bukkit.event.entity.EntityTargetLivingEntityEvent(this.getBukkitEntity(), craftTarget, reason);
if (!event.callEvent()) {
return false;
}

if (event.getTarget() != null) {
target = ((CraftLivingEntity) event.getTarget()).getHandle();
newTarget = ((CraftLivingEntity) event.getTarget()).getHandle();
} else {
target = null;
newTarget = null;
}
}
this.target = target;

this.target = newTarget;
return true;
// CraftBukkit end
}
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