122 lines
4.7 KiB
C#
122 lines
4.7 KiB
C#
using Cielonos.MainGame.Characters;
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using UnityEngine;
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namespace Cielonos.MainGame.Effects.Feedback
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{
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/// <summary>
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/// 反馈用向量转换工具。
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/// 统一处理“攻击方向”“摄像机本地方向”“反馈振幅”等常见转换，避免各个武器和角色重复实现。
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/// </summary>
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public static class FeedbackVectorUtility
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{
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private const float DirectionEpsilon = 0.0001f;
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/// <summary>
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/// 获取攻击打向目标的世界方向。
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/// 对于 Projectile，优先使用真实移动速度方向；对于 NormalArea，使用攻击者指向目标的方向。
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/// </summary>
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public static Vector3 GetAttackDirection(AttackAreaBase attackArea, CharacterBase target)
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{
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if (attackArea == null)
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{
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return Vector3.forward;
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}
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if (attackArea is Projectile)
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{
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return GetProjectileDirection(attackArea);
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}
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if (attackArea is NormalArea && attackArea.creator != null && target != null)
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{
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return NormalizeOrFallback(
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target.CenterPoint.position - attackArea.creator.CenterPoint.position,
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attackArea.topParent.forward);
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}
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if (attackArea.creator != null && target != null)
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{
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return NormalizeOrFallback(
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target.CenterPoint.position - attackArea.creator.CenterPoint.position,
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attackArea.topParent.forward);
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}
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return NormalizeOrFallback(attackArea.topParent.forward, Vector3.forward);
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}
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/// <summary>
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/// 将世界方向转换为摄像机本地方向。
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/// 摄像机不存在时返回标准化世界方向，保证调用端仍能获得稳定结果。
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/// </summary>
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public static Vector3 WorldDirectionToCameraLocal(Vector3 worldDirection, Camera camera)
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{
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Vector3 normalizedDirection = NormalizeOrFallback(worldDirection, Vector3.forward);
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return camera != null
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? camera.transform.InverseTransformDirection(normalizedDirection).normalized
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: normalizedDirection;
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}
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/// <summary>
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/// 获取攻击方向对应的摄像机本地方向。
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/// 语义为“攻击从来源打向目标”，适合玩家受击、受击后处理、方向性摄像机反馈等场景。
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/// </summary>
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public static Vector3 GetCameraLocalAttackDirection(AttackAreaBase attackArea, CharacterBase target, Camera camera)
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{
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Vector3 attackDirection = GetAttackDirection(attackArea, target);
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return WorldDirectionToCameraLocal(attackDirection, camera);
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}
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/// <summary>
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/// 根据方向和强度生成摄像机反馈振幅。
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/// </summary>
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public static Vector3 DirectionToAmplitude(Vector3 direction, float strength)
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{
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return NormalizeOrFallback(direction, Vector3.forward) * Mathf.Max(0f, strength);
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}
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/// <summary>
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/// 根据命中点在屏幕中的横向位置生成振幅。
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/// 适合远程命中确认等“屏幕位置比物理飞行方向更重要”的反馈。
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/// </summary>
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public static Vector3 ScreenHitPositionToAmplitude(
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Vector3 hitPosition,
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Camera camera,
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float horizontalStrength,
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float verticalKick,
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float depthKick)
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{
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if (camera == null)
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{
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return new Vector3(0f, verticalKick, depthKick);
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}
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Vector3 viewportPosition = camera.WorldToViewportPoint(hitPosition);
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float screenX = viewportPosition.z >= 0f
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? Mathf.Clamp((viewportPosition.x - 0.5f) * 2f, -1f, 1f)
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: 0f;
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return new Vector3(screenX * horizontalStrength, verticalKick, depthKick);
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}
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private static Vector3 GetProjectileDirection(AttackAreaBase attackArea)
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{
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if (attackArea.moveSm != null && attackArea.moveSm.unscaledVelocity.sqrMagnitude > DirectionEpsilon)
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{
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return attackArea.moveSm.unscaledVelocity.normalized;
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}
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return NormalizeOrFallback(attackArea.topParent.forward, Vector3.forward);
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}
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private static Vector3 NormalizeOrFallback(Vector3 direction, Vector3 fallback)
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{
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if (direction.sqrMagnitude > DirectionEpsilon)
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{
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return direction.normalized;
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}
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return fallback.sqrMagnitude > DirectionEpsilon ? fallback.normalized : Vector3.forward;
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}
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}
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}
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