106 lines
3.4 KiB
C#
106 lines
3.4 KiB
C#
using UnityEngine;
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namespace IndianOceanAssets.Engine2_5D
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{
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/// <summary>
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/// 光源组件（方案B用）—— 挂到任何需要发光的物体上。
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/// 向 LightMaskSystem 注册自己的世界坐标、半径、强度。
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/// 不创建真实的 Point Light，而是由 DarknessOverlay shader 在遮罩层挖洞。
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/// </summary>
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public class LightSource : MonoBehaviour
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{
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[Header("光源参数")]
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[SerializeField] private float radius = 4f; // 光照半径（世界单位）
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[SerializeField] private float intensity = 1f; // 光照强度 (0~1)
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[SerializeField] private bool registerOnStart = true;
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[Header("可选：目标跟随（留空则跟随自身）")]
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[SerializeField] private Transform followTarget;
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[Header("闪烁效果")]
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[SerializeField] private bool enableFlicker = false;
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[SerializeField] private float flickerSpeed = 5f;
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[SerializeField] private float flickerAmount = 0.2f;
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private float baseIntensity;
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private float noiseSeed;
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private void Start()
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{
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baseIntensity = intensity;
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noiseSeed = Random.Range(0f, 100f);
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if (registerOnStart && LightMaskSystem.Instance != null)
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LightMaskSystem.Instance.RegisterLight(this);
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}
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private void Update()
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{
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if (enableFlicker)
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{
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float noise = Mathf.PerlinNoise(Time.time * flickerSpeed, noiseSeed);
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intensity = baseIntensity + (noise - 0.5f) * 2f * flickerAmount;
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intensity = Mathf.Clamp01(intensity);
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}
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}
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/// <summary>
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/// 返回光源在世界坐标的位置（XZ 平面）
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/// </summary>
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public Vector2 GetWorldPositionXZ()
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{
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Transform t = followTarget != null ? followTarget : transform;
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return new Vector2(t.position.x, t.position.z);
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}
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public float Radius => radius;
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public float Intensity => intensity;
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public void SetIntensity(float value)
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{
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baseIntensity = Mathf.Clamp01(value);
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intensity = baseIntensity;
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}
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public void SetRadius(float value)
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{
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radius = Mathf.Max(0.1f, value);
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}
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/// <summary>
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/// 平滑过渡半径（如 Q 键过场时光圈逐渐扩大）
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/// </summary>
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public void LerpRadius(float target, float speed)
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{
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radius = Mathf.Lerp(radius, target, Time.deltaTime * speed);
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radius = Mathf.Max(0.1f, radius);
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}
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/// <summary>
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/// 平滑过渡强度（如玩家受伤时光变暗、靠近篝火时光变亮）
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/// </summary>
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public void LerpIntensity(float target, float speed)
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{
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baseIntensity = Mathf.Lerp(baseIntensity, Mathf.Clamp01(target), Time.deltaTime * speed);
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intensity = baseIntensity;
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}
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private void OnEnable()
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{
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if (LightMaskSystem.Instance != null)
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LightMaskSystem.Instance.RegisterLight(this);
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}
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private void OnDisable()
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{
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if (LightMaskSystem.Instance != null)
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LightMaskSystem.Instance.UnregisterLight(this);
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}
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private void OnDestroy()
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{
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if (LightMaskSystem.Instance != null)
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LightMaskSystem.Instance.UnregisterLight(this);
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}
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}
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} |