107 lines
4.5 KiB
C#
107 lines
4.5 KiB
C#
using Opsive.BehaviorDesigner.Runtime.Tasks;
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using Opsive.BehaviorDesigner.Runtime.Tasks.Conditionals;
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using Opsive.GraphDesigner.Runtime;
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using Opsive.GraphDesigner.Runtime.Variables;
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using Opsive.Shared.Utility;
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using SLSUtilities.General;
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using UnityEngine;
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namespace Cielonos.MainGame.Characters.AI
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{
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[Description("使用伪随机分布（PRD/稳定概率）进行掷骰判定。连续判定失败会提升下次触发几率，判定成功后重置。用于防脸黑与连爆，制造更为平滑均匀的“伪随机”发生感。")]
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[NodeIcon("69bf50f8923f54c4c8bb8e258883a411", "6c5770241610a4c4aae4ac3af0ac8bf8")]
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[Category("Cielonos")]
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public class StableRandomProbability : Conditional
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{
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[Tooltip("当前节点期望判定的成功概率(0~1)。")]
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public SharedVariable<float> successProbability = 0.25f;
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[Tooltip("是否启用跨节点共享概率机制。启用后，多个绑定了同一 SharedStableProbability 变量的 StableRandomProbability 节点将共享同一个 N 计数（但可独立设定各自的目标概率 P）。如果不启用，则每个节点独立追踪自己的 N 计数。")]
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public bool useSharedProbability = false;
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[Tooltip("【可选】跨节点共享状态槽。如果需要多个不同的判定节点（如：连续3次不同的普攻）共享同一个失败累计次数 N，请绑定同一个 SharedStableProbability 变量")]
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public SharedVariable<StableProbability> sharedStableProbability;
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[Tooltip("冷却时间(秒)。在此期间内如果节点被每帧重复求值（由于条件打断 Lower Priority/Both），将直接返回上一次的判定结果，不会进行新的掷骰。配置为 0 则不使用冷却。")]
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public SharedVariable<float> rollCooldown = 0.5f;
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private float _lastRollTime = -999f;
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private bool _lastResult = false;
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private StableProbability _internalProbability;
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public override void OnAwake()
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{
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// 如果用户没有绑定共享变量，或者绑定了但由于某种原因无法引用
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if (!useSharedProbability)
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{
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// 创建此节点私有的稳定概率对象
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_internalProbability = new StableProbability(successProbability.Value);
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}
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else
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{
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// 如果绑定了共享变量，但在整棵树第一次唤醒时尚未初始化其值实例，则由此节点代为创建
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if (sharedStableProbability.Value == null)
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{
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sharedStableProbability.Value = new StableProbability(successProbability.Value);
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}
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}
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}
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public override TaskStatus OnUpdate()
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{
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if (rollCooldown != null && rollCooldown.Value > 0f)
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{
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if (Time.time - _lastRollTime < rollCooldown.Value)
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{
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return _lastResult ? TaskStatus.Success : TaskStatus.Failure;
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}
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}
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StableProbability prdInstance = null;
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if (useSharedProbability && sharedStableProbability.Value != null)
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{
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prdInstance = sharedStableProbability.Value;
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// 实时更新外接共享实例的期望概率 (防止外部在游戏运行中用其他 Action 更改了目标百分比)
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prdInstance.Probability = successProbability.Value;
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}
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else
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{
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prdInstance = _internalProbability;
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if (prdInstance != null)
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{
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prdInstance.Probability = successProbability.Value;
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}
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}
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if (prdInstance == null)
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{
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return TaskStatus.Failure;
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}
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// 执行 Roll 判定并自动增加 N 计数 / 重置 N 计数
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Debug.Log($"当前实际概率: {prdInstance.C * prdInstance.N:F2}");
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bool isSuccess = prdInstance.Roll();
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_lastResult = isSuccess;
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_lastRollTime = Time.time;
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return isSuccess ? TaskStatus.Success : TaskStatus.Failure;
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}
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public override void Reset()
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{
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base.Reset();
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successProbability = 0.25f;
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rollCooldown = 0.5f;
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_lastRollTime = -999f;
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_lastResult = false;
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useSharedProbability = false;
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sharedStableProbability = null;
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if (_internalProbability != null)
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{
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_internalProbability.Reset();
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}
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}
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}
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}
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