143 lines
5.0 KiB
C#
143 lines
5.0 KiB
C#
using UnityEngine;
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using System.Collections;
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namespace IndianOceanAssets.Engine2_5D
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{
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/// <summary>
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/// 场景交互点 —— 玩家走到指定物体附近，按 Q 触发过场。
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/// 触发后主角的光圈逐渐扩大，最终点亮整个场景（PPT式过渡）。
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///
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/// 挂载位置：场景中的交互物件（如祭坛、机关、特殊NPC等）
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/// 需要：物体上有 Collider + 勾选 IsTrigger
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/// 玩家需要 Tag = "Player"
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/// </summary>
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public class SceneInteraction : MonoBehaviour
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{
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[Header("交互设置")]
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[SerializeField] private KeyCode interactKey = KeyCode.Q;
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[Tooltip("玩家进入此范围才能交互")]
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[SerializeField] private float interactionRadius = 3f;
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[Header("过场参数")]
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[Tooltip("光圈扩大的持续时间（秒），类似PPT过场")]
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[SerializeField] private float transitionDuration = 5f;
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[Tooltip("最终光圈半径（要覆盖整个场景的话设大一点）")]
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[SerializeField] private float finalLightRadius = 60f;
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[Tooltip("最终全局最小亮度（0.6=全场景可见但偏暗, 1.0=全亮）")]
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[SerializeField, Range(0f, 1f)] private float finalMinBrightness = 0.7f;
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[Header("引用")]
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[Tooltip("玩家的 LightSource 组件（必须已挂载）")]
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[SerializeField] private LightSource playerLightSource;
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[Tooltip("交互提示 UI（可选，玩家靠近时显示）")]
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[SerializeField] private GameObject interactionPrompt;
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[Header("音效（可选）")]
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[SerializeField] private AudioSource interactionSFX;
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// 状态
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private bool _triggered = false;
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private bool _playerInRange = false;
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private Transform _player;
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private void Start()
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{
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// 自动查找玩家
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GameObject playerObj = GameObject.FindGameObjectWithTag("Player");
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if (playerObj != null)
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{
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_player = playerObj.transform;
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if (playerLightSource == null)
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playerLightSource = playerObj.GetComponent<LightSource>();
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}
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if (interactionPrompt != null)
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interactionPrompt.SetActive(false);
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}
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private void Update()
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{
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if (_triggered) return;
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// 检测玩家是否在范围内
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if (_player != null)
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{
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float dist = Vector3.Distance(transform.position, _player.position);
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_playerInRange = dist <= interactionRadius;
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}
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// 显示/隐藏交互提示
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if (interactionPrompt != null)
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interactionPrompt.SetActive(_playerInRange);
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// 检测 Q 键
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if (_playerInRange && Input.GetKeyDown(interactKey))
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{
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StartCoroutine(ExpandLightTransition());
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}
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}
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/// <summary>
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/// 过场协程：光圈逐渐扩大 + 全局亮度提升
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/// </summary>
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private IEnumerator ExpandLightTransition()
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{
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_triggered = true;
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// 隐藏交互提示
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if (interactionPrompt != null)
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interactionPrompt.SetActive(false);
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// 播放音效
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if (interactionSFX != null)
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interactionSFX.Play();
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// 记录初始值
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float startRadius = playerLightSource != null ? playerLightSource.Radius : 5f;
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float startBrightness = LightMaskSystem.Instance != null ? 0f : 0f;
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float elapsed = 0f;
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// 过程：平滑插值扩大
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while (elapsed < transitionDuration)
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{
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elapsed += Time.deltaTime;
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float t = elapsed / transitionDuration;
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// SmoothStep 插值（开始和结束都柔和）
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float smoothT = t * t * (3f - 2f * t);
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// 扩大玩家光圈半径
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if (playerLightSource != null)
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playerLightSource.SetRadius(Mathf.Lerp(startRadius, finalLightRadius, smoothT));
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// 提升全局最小亮度（让黑暗区域也逐渐可见）
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if (LightMaskSystem.Instance != null)
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LightMaskSystem.Instance.SetMinBrightness(Mathf.Lerp(startBrightness, finalMinBrightness, smoothT));
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yield return null;
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}
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// 确保最终值
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if (playerLightSource != null)
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playerLightSource.SetRadius(finalLightRadius);
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if (LightMaskSystem.Instance != null)
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LightMaskSystem.Instance.SetMinBrightness(finalMinBrightness);
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Debug.Log("[SceneInteraction] 过场完成，场景已全部点亮");
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}
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// ===== 编辑器可视化 =====
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private void OnDrawGizmosSelected()
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{
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Gizmos.color = new Color(0f, 1f, 0f, 0.3f);
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Gizmos.DrawWireSphere(transform.position, interactionRadius);
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}
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}
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}
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