EntityCitizen 是mc里的entity子类，
在构造函数里初始化了一个statemachine
entityStatemachine.addTransition(new TickingTransition<>(EntityState.INIT, () -> true, this::initialize, 40));
entityStatemachine.addTransition(new TickingTransition<>(EntityState.ACTIVE_CLIENT, () -> {citizenColonyHandler.updateColonyClient();return false;}, () -> null, 1));
entityStatemachine.addTransition(new TickingTransition<>(EntityState.ACTIVE_CLIENT, this::shouldBeInactive, () -> EntityState.INACTIVE, TICKS_20));
entityStatemachine.addTransition(new TickingTransition<>(EntityState.ACTIVE_CLIENT, this::refreshCitizenDataView, () -> null, TICKS_20));
entityStatemachine.addTransition(new TickingTransition<>(EntityState.ACTIVE_SERVER, this::updateSaturation, () -> null, HEAL_CITIZENS_AFTER));
entityStatemachine.addTransition(new TickingTransition<>(EntityState.ACTIVE_SERVER, this::updateVisualData, () -> null, 200));
entityStatemachine.addTransition(new TickingTransition<>(EntityState.ACTIVE_SERVER, this::onServerUpdateHandlers, () -> null, TICKS_20));
entityStatemachine.addTransition(new TickingTransition<>(EntityState.ACTIVE_SERVER, this::onTickDecrements, () -> null, 1));
entityStatemachine.addTransition(new TickingTransition<>(EntityState.ACTIVE_SERVER, this::shouldBeInactive, () -> EntityState.INACTIVE, TICKS_20));
entityStatemachine.addTransition(new TickingTransition<>(EntityState.ACTIVE_SERVER, this::determineDesiredActivity, () -> null, 100));
entityStatemachine.addTransition(new TickingTransition<>(EntityState.INACTIVE, this::isAlive, () -> EntityState.INIT, 100));entityCitizen还有一个livingTick方法 负责
/**
* Called frequently so the entity can update its state every tick as required.
For example, zombies and skeletons. use this to react to sunlight and start to burn.
*/
@Override
public void livingTick()
{
super.livingTick();
entityStatemachine.tick();
}有一个statemachine 承担状态变化的任务，如 active 死亡 回血 初始化，这些
还有一个mc的ai实现方案实现一些ai，如 吃 睡 躲怪 哀悼 生病 注视等
this.goalSelector.addGoal(++priority, new EntityAIEatTask(this));
job ai
分配工作时： this.goalSelector.addGoal(++priority, new EntityAIEatTask(this));
这里是 和 其他 交流的地方, ai只会调用job的方法.
EntityAIWorkDeliveryman
这个是Goal的子类， 可以直接添加到entity的goalSelector里
里面也包含一个状态机，主要负责的是工作相关的AI
public EntityAIWorkDeliveryman(@NotNull final JobDeliveryman deliveryman)
{
super(deliveryman);
super.registerTargets(
/*
* Check if tasks should be executed.
*/
new AITarget(IDLE, () -> START_WORKING, 1),
new AITarget(START_WORKING, this::checkIfExecute, this::decide, DECISION_DELAY),
new AITarget(PREPARE_DELIVERY, this::prepareDelivery, STANDARD_DELAY),
new AITarget(DELIVERY, this::deliver, STANDARD_DELAY),
new AITarget(PICKUP, this::pickup, PICKUP_DELAY),
new AITarget(DUMPING, this::dump, TICKS_SECOND)
);
worker.setCanPickUpLoot(true);
}job 与 ai
ai里会调用job里的方法，
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