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There is a newer version: 1.20.40-r1

package cn.nukkit.entity.ai.behavior;

import cn.nukkit.api.PowerNukkitXOnly;
import cn.nukkit.api.Since;
import cn.nukkit.entity.EntityIntelligent;
import cn.nukkit.entity.ai.evaluator.IBehaviorEvaluator;
import cn.nukkit.entity.ai.executor.IBehaviorExecutor;
import lombok.Getter;

/**
 * 单个的行为对象

 * 包含一个执行器和一个评估器，行为对象委托了它们的方法
 */
@PowerNukkitXOnly
@Since("1.6.0.0-PNX")
@Getter
public class Behavior extends AbstractBehavior {

    protected final int priority;
    protected final int weight;
    protected final int period;
    protected IBehaviorExecutor executor;
    protected IBehaviorEvaluator evaluator;

    public Behavior(IBehaviorExecutor executor, IBehaviorEvaluator evaluator) {
        this(executor, evaluator, 1);
    }

    public Behavior(IBehaviorExecutor executor, IBehaviorEvaluator evaluator, int priority) {
        this(executor, evaluator, priority, 1);
    }

    public Behavior(IBehaviorExecutor executor, IBehaviorEvaluator evaluator, int priority, int weight) {
        this(executor, evaluator, priority, weight, 1);
    }


    public Behavior(IBehaviorExecutor executor, IBehaviorEvaluator evaluator, int priority, int weight, int period) {
        this.executor = executor;
        this.evaluator = evaluator;
        this.priority = priority;
        this.weight = weight;
        this.period = period;
    }

    @Override
    public boolean evaluate(EntityIntelligent entity) {
        return evaluator.evaluate(entity);
    }

    @Override
    public boolean execute(EntityIntelligent entity) {
        return executor.execute(entity);
    }

    @Override
    public void onStart(EntityIntelligent entity) {
        executor.onStart(entity);
    }

    @Override
    public void onInterrupt(EntityIntelligent entity) {
        executor.onInterrupt(entity);
    }

    @Override
    public void onStop(EntityIntelligent entity) {
        executor.onStop(entity);
    }

    @Override
    public String toString(){
        return "[" + priority + "] " + executor.getClass().getSimpleName() + " | " + evaluator.getClass().getSimpleName();
    }
}