70 lines
1.2 KiB
C#
70 lines
1.2 KiB
C#
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using System;
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using UnityEngine;
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using UnityEngine.UI;
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namespace RoR2.UI;
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public class FlashPanel : MonoBehaviour
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{
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public RectTransform flashRectTransform;
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public float strength = 1f;
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public float freq = 1f;
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public float flashAlpha = 0.7f;
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public bool alwaysFlash = true;
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private bool isFlashing;
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private float theta = 1f;
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private Image image;
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private void Start()
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{
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image = flashRectTransform.GetComponent<Image>();
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}
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private void Update()
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{
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flashRectTransform.anchorMin = new Vector2(0f, 0f);
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flashRectTransform.anchorMax = new Vector2(1f, 1f);
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if (alwaysFlash)
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{
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isFlashing = true;
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}
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if (isFlashing)
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{
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theta += Time.deltaTime * freq;
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}
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if (theta > 1f)
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{
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if (alwaysFlash)
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{
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theta -= theta - theta % 1f;
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}
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else
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{
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theta = 1f;
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}
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isFlashing = false;
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}
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float num = 1f - (1f + Mathf.Cos(theta * MathF.PI * 0.5f + MathF.PI / 2f));
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flashRectTransform.sizeDelta = new Vector2(1f + num * 20f * strength, 1f + num * 20f * strength);
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if ((bool)image)
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{
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Color color = image.color;
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color.a = (1f - num) * strength * flashAlpha;
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image.color = color;
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}
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}
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public void Flash()
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{
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theta = 0f;
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isFlashing = true;
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}
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}
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