67 lines
2.9 KiB
C#
67 lines
2.9 KiB
C#
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using System.Collections.Generic;
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using UnityEngine;
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namespace DestroyIt
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{
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/// <summary>This script fades out all the child particle effects for the game object it is attached to.</summary>
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public class FadeParticleEffect : MonoBehaviour
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{
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[Range(0f, 60f)]
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public float delaySeconds = 10f; // How long to delay before starting the fade.
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[Range(0f, 60f)]
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public float fadeSeconds = 2f; // How long to spend fading out the particle effect.
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[Range(1, 30)]
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public int updatesPerSecond = 15; // How often to update the fade effect. Higher values have smoother fade-out, but higher performance cost.
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private float fadeTiming;
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private int stepCounter;
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private float totalFadeSteps;
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private List<ParticleEffectPropertyBag> particleEffectProperties;
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void Start()
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{
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particleEffectProperties = new List<ParticleEffectPropertyBag>();
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fadeTiming = 1 / (float)updatesPerSecond;
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totalFadeSteps = fadeSeconds / fadeTiming;
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Destroy(transform.gameObject, delaySeconds + fadeSeconds);
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if (fadeSeconds > 0f)
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InvokeRepeating("Fade", delaySeconds, fadeTiming);
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}
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void Fade()
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{
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stepCounter += 1;
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if (particleEffectProperties.Count == 0)
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{
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ParticleSystem[] particleSystems = this.GetComponentsInChildren<ParticleSystem>();
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foreach (ParticleSystem particleSystem in particleSystems)
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{
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Material mat = particleSystem.GetComponent<Renderer>().material;
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if (!mat.HasProperty("_TintColor")) continue;
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Color tintColorStart = mat.GetColor("_TintColor");
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particleEffectProperties.Add(new ParticleEffectPropertyBag() { ParticleSystem = particleSystem, TintColorStart = tintColorStart });
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}
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}
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foreach (ParticleEffectPropertyBag particleSystemPropBag in particleEffectProperties)
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{
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Material mat = particleSystemPropBag.ParticleSystem.GetComponent<Renderer>().material;
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if (!mat.HasProperty("_TintColor")) continue;
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Color tintColor = particleSystemPropBag.TintColorStart;
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float fadeAmountPerStep = ((1.0f - particleSystemPropBag.TintColorStart.a) / 1.0f) / totalFadeSteps;
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float newAlphaValue = Mathf.Clamp01(particleSystemPropBag.TintColorStart.a - (fadeAmountPerStep * stepCounter));
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Color newTintColor = new Color(tintColor.r, tintColor.g, tintColor.b, newAlphaValue);
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mat.SetColor("_TintColor", newTintColor);
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}
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}
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}
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public class ParticleEffectPropertyBag
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{
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public ParticleSystem ParticleSystem { get; set; }
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public Color TintColorStart { get; set; }
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}
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}
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