using System;
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using System.Collections.Generic;
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using UnityEngine;
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public class BulletCurve
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{
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protected BattleObject caster;
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protected SkillConfig skillConfig;
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protected BattleEffectPlayer bulletEffect;
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protected RectTransform bulletTrans; // 子弹的RectTransform
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protected RectTransform target;
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protected Action<int, List<HB427_tagSCUseSkill.tagSCUseSkillHurt>> onHit;
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protected bool finished = false;
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protected float duration = 0f;
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protected float elapsed = 0f;
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public BulletCurve() { }
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public BulletCurve(BattleObject caster, SkillConfig skillConfig, BattleEffectPlayer bulletEffect, RectTransform target, Action<int, List<HB427_tagSCUseSkill.tagSCUseSkillHurt>> onHit)
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{
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this.caster = caster;
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this.skillConfig = skillConfig;
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this.bulletEffect = bulletEffect;
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this.target = target;
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this.onHit = onHit;
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this.bulletTrans = bulletEffect.transform as RectTransform;
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}
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public virtual void Reset()
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{
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finished = false;
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elapsed = 0f;
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duration = skillConfig.BulletFlyTime;
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}
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// 世界坐标转为bulletTrans父节点下的本地坐标
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protected Vector2 WorldToLocalAnchoredPosition(Vector3 worldPos)
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{
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var parent = bulletTrans.parent as RectTransform;
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Vector2 localPoint;
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RectTransformUtility.ScreenPointToLocalPointInRectangle(parent, RectTransformUtility.WorldToScreenPoint(null, worldPos), null, out localPoint);
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return localPoint;
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}
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// Run就是Update，每帧调用
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public virtual void Run()
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{
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if (finished) return;
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Vector2 targetPos = WorldToLocalAnchoredPosition(target.position);
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bulletTrans.anchoredPosition = targetPos;
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ReachTarget();
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}
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protected virtual void ReachTarget()
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{
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finished = true;
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onHit?.Invoke(0, null);
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caster.battleField.battleEffectMgr.RemoveEffect(skillConfig.BulletEffectId, bulletEffect);
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}
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public bool IsFinished => finished;
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}
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