Assets/EZ Effects/Scripts/ComplexLight.cs

   1 using UnityEngine;
   2 using System.Collections;
   3
   4 namespace EZEffects
   5 {
   6     [AddComponentMenu("EZ Effects/Complex Light")]
   7     public class ComplexLight : MonoBehaviour
   8     {
   9         [Header("Fade Properties")]
  10         /// <summary>
  11         /// The light to use.
  12         /// </summary>
  13         public Light Light;
  14         /// <summary>
  15         /// A gradient that represents the change in color of the light.
  16         /// </summary>
  17         public Gradient ColorGradient;
  18         /// <summary>
  19         /// How long to fade the light, in seconds.
  20         /// </summary>
  21         public float FadeTime;
  22         /// <summary>
  23         /// Should the light automatically fade when enabled? Useful when used with an EffectImpact or EffectMuzzleFlash.
  24         /// </summary>
  25         public bool FadeOutOnEnable;
  26
  27         [Header("Flicker Properties")]
  28         /// <summary>
  29         /// Should this light flicker?
  30         /// </summary>
  31         public bool Flicker;
  32         /// <summary>
  33         /// The range in intensity the light uses while flickering.
  34         /// </summary>
  35         public Range IntensityRange;
  36         /// <summary>
  37         /// How quickly the light should flicker.
  38         /// </summary>
  39         public float FlickerSpeed;
  40
  41         float timer = 0;
  42         bool fadeIn, off, fading;
  43         Vector2 randomValue;
  44
  45         void Start()
  46         {
  47             randomValue = Random.insideUnitCircle.normalized;
  48
  49             if (Light == null)
  50                 Light = GetComponentInChildren<Light>();
  51
  52             if (Light == null)
  53             {
  54                 Debug.LogError("LightComplex " + gameObject.name + " does not have a light assigned!");
  55                 this.enabled = false;
  56                 return;
  57             }
  58         }
  59
  60
  61         void OnEnable()
  62         {
  63             if (!FadeOutOnEnable)
  64                 return;
  65
  66             fadeIn = false;
  67             timer = 0;
  68             Light.enabled = true;
  69             off = false;
  70
  71             StartCoroutine(fade(FadeTime));
  72         }
  73
  74         /// <summary>
  75         /// Starts a fade in of the light.
  76         /// <param name="time">An optional parameter defining how long to fade the light (in seconds).</param>
  77         /// </summary>
  78         public void FadeIn(float time = -1)
  79         {
  80             fadeIn = true;
  81             timer = 0;
  82
  83             if (time == -1)
  84                 time = FadeTime;
  85
  86             if (!fading)
  87                 StartCoroutine(fade(time));
  88         }
  89
  90         /// <summary>
  91         /// Starts a fade out of the light.
  92         /// <param name="time">An optional parameter defining how long to fade the light (in seconds).</param>
  93         /// </summary>
  94         public void FadeOut(float time = -1)
  95         {
  96             fadeIn = false;
  97             timer = 0;
  98
  99             if (time == -1)
 100                 time = FadeTime;
 101
 102             if (!fading)
 103                 StartCoroutine(fade(time));
 104         }
 105
 106         IEnumerator fade(float fadeTime)
 107         {
 108             fading = true;
 109
 110             if (fadeIn)
 111                 Light.enabled = true;
 112
 113             while (timer < fadeTime)
 114             {
 115                 timer += Time.deltaTime;
 116
 117                 if (fadeIn)
 118                     Light.color = ColorGradient.Evaluate(1 - (timer / fadeTime));
 119                 else
 120                     Light.color = ColorGradient.Evaluate(timer / fadeTime);
 121
 122                 yield return null;
 123             }
 124
 125             if (fadeIn)
 126                 off = false;
 127             else
 128             {
 129                 off = true;
 130                 Light.enabled = false;
 131             }
 132
 133             fading = false;
 134         }
 135
 136         void Update()
 137         {
 138             if (off || !Flicker)
 139                 return;
 140
 141             float noise = Mathf.PerlinNoise(Time.time * randomValue.x * FlickerSpeed, Time.time * randomValue.y * FlickerSpeed);
 142             Light.intensity = IntensityRange.Lerp(noise);
 143         }
 144     }
 145 }