//--------------------------------------------------------
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// [Author]: 第二世界
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// [ Date ]: Monday, September 11, 2017
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//--------------------------------------------------------
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using UnityEngine;
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using System.Collections;
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using UnityEngine.UI;
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using System.Text;
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public class BossLifeBar : MonoBehaviour
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{
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[SerializeField] Sprite[] m_LifeBarSprites;
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[SerializeField] Image m_BackGround;
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[SerializeField] Image m_MiddleGround;
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[SerializeField] Image m_PrefaceGround;
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[SerializeField] Slider m_SliderMiddleground;
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[SerializeField] Slider m_SliderForeground;
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[SerializeField] Text m_Surplus;
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[SerializeField] Text m_SurplusPercent;
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[SerializeField] float m_SmoothTime = 0.3f;
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public float smoothTime {
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get { return m_SmoothTime; }
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}
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Pattern pattern = Pattern.Reduce;
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float targetValue = 0f;
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int totalSegments = 1;
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int surplusSegments = -1;
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float refValue = 0f;
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float timer = 0f;
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float behaviourStartValue = 0f;
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float m_CurrentBehaviourValue = 0f;
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float currentBehaviourValue {
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get { return m_CurrentBehaviourValue; }
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set {
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m_CurrentBehaviourValue = value;
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UpdateSurplusSegments(currentBehaviourValue);
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float behaviourDecimalValue = GetSegmentDecimal(m_CurrentBehaviourValue);
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float trueDecimalValue = GetSegmentDecimal(targetValue);
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switch (pattern)
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{
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case Pattern.Add:
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m_SliderForeground.value = behaviourDecimalValue;
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m_SliderMiddleground.value = behaviourDecimalValue > trueDecimalValue ? 1f : trueDecimalValue;
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break;
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case Pattern.Reduce:
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m_SliderMiddleground.value = behaviourDecimalValue;
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m_SliderForeground.value = behaviourDecimalValue < trueDecimalValue ? 0f : trueDecimalValue;
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break;
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case Pattern.None:
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m_SliderMiddleground.value = behaviourDecimalValue;
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m_SliderForeground.value = behaviourDecimalValue;
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break;
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}
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}
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}
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public void SetBaseInfo(int _lifeBarCount, ulong _hp, ulong _maxHp)
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{
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surplusSegments = -1;
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totalSegments = _lifeBarCount;
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// 使用精确值，不再人为减小
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float percentage = (_maxHp > 0) ? (float)_hp / (float)_maxHp : 0f;
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targetValue = currentBehaviourValue = percentage * totalSegments;
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// 使用统一的 GetSegmentDecimal，避免小数精度导致进度条为0
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var behaviourDecimalValue = GetSegmentDecimal(currentBehaviourValue);
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m_SliderForeground.value = m_SliderMiddleground.value = behaviourDecimalValue;
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refValue = 0f;
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// 立刻显示基准百分比（使用 percentage）
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m_SurplusPercent.text = (percentage * 100f).ToString("F2") + "%";
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}
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public void Show(ulong _hp, ulong _maxHp)
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{
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var percentage = Mathf.Clamp(_hp, 0, _maxHp) / (float)_maxHp;
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var tempValue = totalSegments * percentage; // 不再减小
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pattern = tempValue > targetValue ? Pattern.Add : tempValue < targetValue ? Pattern.Reduce : Pattern.None;
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behaviourStartValue = currentBehaviourValue;
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targetValue = tempValue;
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timer = 0f;
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refValue = 0f;
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// 立即更新百分比显示（直接使用 percentage）
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m_SurplusPercent.text = (percentage * 100f).ToString("F2") + "%";
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}
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private void LateUpdate()
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{
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if (Mathf.Abs(currentBehaviourValue - targetValue) > 0.00001f)
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{
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var newValue = Mathf.SmoothDamp(currentBehaviourValue, targetValue, ref refValue, smoothTime);
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currentBehaviourValue = newValue;
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}
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}
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static StringBuilder stringBuild = new StringBuilder();
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private void UpdateSurplusSegments(float _targetValue)
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{
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var currentSurplus = Mathf.CeilToInt(_targetValue);
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if (currentSurplus != surplusSegments)
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{
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surplusSegments = currentSurplus;
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var colorSetLength = m_LifeBarSprites.Length;
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var index = surplusSegments % colorSetLength;
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var nextIndex = index == 0 ? colorSetLength - 1 : index - 1;
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m_PrefaceGround.overrideSprite = m_LifeBarSprites[index];
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m_MiddleGround.overrideSprite = m_LifeBarSprites[index];
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m_BackGround.overrideSprite = m_LifeBarSprites[nextIndex];
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m_BackGround.SetActive(surplusSegments > 1);
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m_Surplus.text = "x" + surplusSegments.ToString();
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float pct = totalSegments > 0 ? Mathf.Clamp01(_targetValue / totalSegments) : 0f;
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// 修复格式并处理接近 100% 的情况
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if (1f - pct < 0.00005f) pct = 1f;
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m_SurplusPercent.text = (pct * 100f).ToString("F2") + "%";
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}
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}
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// int GetNumKey(int _num)
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// {
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// var config = DamageNumConfig.Get("BossLifeBarSurplusNum");
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// return config.nums[_num - 48];
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// }
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enum Pattern
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{
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None,
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Add,
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Reduce,
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}
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// helper: 返回段内小数部分；当恰好为整数且大于0时，返回1以表示满格（避免0导致进度条变空）
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private float GetSegmentDecimal(float value)
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{
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// 先判断是否为 0，避免被误判为"整段满格"
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if (value <= 0f) return 0f;
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// 使用一个小的容忍值来处理浮点误差，避免 near-integer 导致 0
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const float eps = 1e-5f;
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// 先做一个向下稳定的 floor，避免 2.999999 变成 2 的问题
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float stableFloor = Mathf.Floor(value + eps);
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float frac = value - stableFloor;
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// 只有在 value > 0 且接近整数时才返回 1（表示当前段满格）
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if (frac <= eps && value >= 1f - eps)
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return 1f;
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return Mathf.Clamp01(frac);
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}
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}
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