80 lines
2.5 KiB
C#
80 lines
2.5 KiB
C#
using System.Collections;
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using UnityEngine;
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namespace Unheimlich.VFX
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{
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public class LightFlicker : MonoBehaviour
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{
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public Light targetLight;
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[Tooltip("Flicker oscillates around this value. Driven each frame by ScarecrowFire.")]
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public float baseIntensity = 0f;
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[Range(0f, 1f)] public float flickerRange = 0.3f;
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public float flickerSpeed = 5f;
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[Range(0f, 1f)] public float glitchChance = 0.15f;
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public float glitchMinDuration = 0.02f;
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public float glitchMaxDuration = 0.12f;
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private float _randomOffset;
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[Header("Glitch Object")]
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public GameObject glitchObject;
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void OnEnable()
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{
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_randomOffset = Random.Range(0f, 1000f);
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StartCoroutine(FlickerRoutine());
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}
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/// <summary>Called each frame by ScarecrowFire to update the base the flicker oscillates around.</summary>
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public void SetBaseIntensity(float value) => baseIntensity = value;
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private IEnumerator FlickerRoutine()
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{
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while (true)
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{
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if (flickerSpeed > 0f)
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{
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float t = Mathf.PerlinNoise(Time.time * flickerSpeed + _randomOffset, 0f);
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ApplyFlicker(t);
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}
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else
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{
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if (targetLight) targetLight.intensity = 0f;
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}
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if (Random.value < glitchChance * Time.deltaTime)
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yield return StartCoroutine(GlitchBurst());
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yield return null;
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}
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}
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private IEnumerator GlitchBurst()
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{
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float elapsed = 0f;
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float duration = Random.Range(glitchMinDuration, glitchMaxDuration);
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if (glitchObject) glitchObject.SetActive(true);
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while (elapsed < duration)
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{
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ApplyFlicker(Random.value);
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elapsed += Time.deltaTime;
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yield return null;
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}
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if (glitchObject) glitchObject.SetActive(false);
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if (targetLight) targetLight.intensity = 0f;
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}
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private void ApplyFlicker(float t)
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{
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if (targetLight == null) return;
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float offset = Mathf.Lerp(-baseIntensity * flickerRange,
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baseIntensity * flickerRange, t);
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targetLight.intensity = Mathf.Max(0f, baseIntensity + offset);
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}
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}
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} |