253 lines
8.5 KiB
C#
253 lines
8.5 KiB
C#
using UnityEngine;
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using Shapes;
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namespace AibisDream.MiniGame.Language
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{
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/// <summary>
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/// 复古噪点叠加渲染器 - 在指定区域上方绘制复古显示器效果
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/// 使用 Shapes 库绘制，与粒子系统使用相同的渲染方式
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/// </summary>
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[ExecuteAlways]
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public class NoiseOverlayRenderer : ImmediateModeShapeDrawer
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{
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[Header("区域设置")]
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[Tooltip("效果覆盖的世界空间区域中心")]
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public Vector3 areaCenter = Vector3.zero;
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[Tooltip("效果覆盖的区域大小")]
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public Vector2 areaSize = new Vector2(10f, 10f);
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[Header("噪点效果")]
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[Tooltip("启用噪点效果")]
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public bool enableNoise = true;
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[Range(0f, 1f)]
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[Tooltip("噪点强度")]
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public float noiseIntensity = 0.15f;
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[Range(1, 100)]
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[Tooltip("噪点密度（点数）")]
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public int noiseDensity = 50;
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[Tooltip("噪点颜色")]
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public Color noiseColor = new Color(1f, 1f, 1f, 0.3f);
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[Range(0.001f, 0.05f)]
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[Tooltip("噪点大小")]
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public float noiseSize = 0.02f;
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[Header("扫描线效果")]
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[Tooltip("启用扫描线")]
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public bool enableScanlines = true;
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[Range(0f, 1f)]
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[Tooltip("扫描线强度")]
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public float scanlineIntensity = 0.1f;
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[Range(10, 200)]
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[Tooltip("扫描线数量")]
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public int scanlineCount = 60;
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[Tooltip("扫描线颜色")]
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public Color scanlineColor = new Color(0f, 0f, 0f, 0.15f);
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[Range(0.001f, 0.02f)]
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[Tooltip("扫描线厚度")]
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public float scanlineThickness = 0.005f;
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[Header("闪烁效果")]
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[Tooltip("启用闪烁")]
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public bool enableFlicker = true;
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[Range(0f, 0.5f)]
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[Tooltip("闪烁强度")]
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public float flickerIntensity = 0.05f;
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[Range(1f, 30f)]
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[Tooltip("闪烁频率")]
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public float flickerFrequency = 10f;
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[Header("边框暗角")]
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[Tooltip("启用边框暗角")]
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public bool enableVignette = true;
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[Range(0f, 1f)]
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[Tooltip("暗角强度")]
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public float vignetteIntensity = 0.3f;
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[Tooltip("暗角颜色")]
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public Color vignetteColor = new Color(0f, 0f, 0f, 0.5f);
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[Header("颜色失真")]
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[Tooltip("启用色差")]
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public bool enableChromaticAberration = false;
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[Range(0f, 0.05f)]
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[Tooltip("色差偏移量")]
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public float chromaticOffset = 0.01f;
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// 内部状态
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private float noiseTimer = 0f;
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private float flickerValue = 1f;
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private System.Random noiseRandom;
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private void OnEnable()
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{
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noiseRandom = new System.Random(42);
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}
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private void Update()
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{
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// 更新噪点动画
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noiseTimer += Time.deltaTime * 20f;
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if (noiseTimer > 1000f) noiseTimer = 0f;
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// 更新闪烁
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if (enableFlicker)
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{
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flickerValue = 1f - flickerIntensity * Mathf.PerlinNoise(Time.time * flickerFrequency, 0f);
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}
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else
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{
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flickerValue = 1f;
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}
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// 重新生成噪点种子
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noiseRandom = new System.Random((int)(Time.time * 60f) % 10000);
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}
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public override void DrawShapes(Camera cam)
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{
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if (!enabled) return;
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using (Draw.Command(cam))
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{
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Draw.BlendMode = ShapesBlendMode.Transparent;
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Draw.ZTest = UnityEngine.Rendering.CompareFunction.Always;
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// 绘制暗角
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if (enableVignette)
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{
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DrawVignette();
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}
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// 绘制扫描线
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if (enableScanlines)
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{
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DrawScanlines();
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}
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// 绘制噪点
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if (enableNoise)
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{
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DrawNoise();
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}
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}
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}
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private void DrawNoise()
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{
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float halfWidth = areaSize.x / 2f;
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float halfHeight = areaSize.y / 2f;
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// 根据闪烁调整噪点数量
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int actualDensity = Mathf.RoundToInt(noiseDensity * noiseIntensity * flickerValue);
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for (int i = 0; i < actualDensity; i++)
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{
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// 使用随机数生成器获取位置
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float x = areaCenter.x + (float)(noiseRandom.NextDouble() * 2 - 1) * halfWidth;
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float y = areaCenter.y + (float)(noiseRandom.NextDouble() * 2 - 1) * halfHeight;
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float z = areaCenter.z;
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// 随机亮度
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float brightness = (float)noiseRandom.NextDouble();
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Color pointColor = noiseColor;
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pointColor.a = noiseColor.a * brightness * flickerValue;
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// 随机大小
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float size = noiseSize * (0.5f + (float)noiseRandom.NextDouble());
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Draw.Disc(new Vector3(x, y, z), size, pointColor);
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}
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}
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private void DrawScanlines()
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{
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float halfWidth = areaSize.x / 2f;
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float halfHeight = areaSize.y / 2f;
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// 计算扫描线间距
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float spacing = areaSize.y / scanlineCount;
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Draw.LineGeometry = LineGeometry.Flat2D;
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Draw.Thickness = scanlineThickness;
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Color lineColor = scanlineColor;
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lineColor.a = scanlineColor.a * scanlineIntensity * flickerValue;
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for (int i = 0; i < scanlineCount; i++)
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{
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float y = areaCenter.y - halfHeight + spacing * i + spacing * 0.5f;
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// 添加轻微的闪烁变化
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float lineAlpha = lineColor.a * (0.8f + 0.2f * Mathf.Sin(y * 10f + Time.time * 5f));
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Color finalColor = lineColor;
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finalColor.a = lineAlpha;
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Vector3 start = new Vector3(areaCenter.x - halfWidth, y, areaCenter.z);
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Vector3 end = new Vector3(areaCenter.x + halfWidth, y, areaCenter.z);
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Draw.Line(start, end, finalColor);
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}
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}
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private void DrawVignette()
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{
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float halfWidth = areaSize.x / 2f;
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float halfHeight = areaSize.y / 2f;
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// 绘制四个角落的暗角渐变（使用多个半透明矩形模拟）
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int steps = 8;
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for (int i = 0; i < steps; i++)
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{
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float t = (float)i / steps;
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float alpha = vignetteColor.a * vignetteIntensity * (1f - t) * flickerValue;
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Color cornerColor = vignetteColor;
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cornerColor.a = alpha * 0.3f;
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float cornerSize = Mathf.Lerp(areaSize.x * 0.3f, 0.1f, t);
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float offset = cornerSize * 0.5f;
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// 四个角落
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Vector3[] corners = new Vector3[]
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{
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new Vector3(areaCenter.x - halfWidth + offset, areaCenter.y + halfHeight - offset, areaCenter.z),
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new Vector3(areaCenter.x + halfWidth - offset, areaCenter.y + halfHeight - offset, areaCenter.z),
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new Vector3(areaCenter.x - halfWidth + offset, areaCenter.y - halfHeight + offset, areaCenter.z),
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new Vector3(areaCenter.x + halfWidth - offset, areaCenter.y - halfHeight + offset, areaCenter.z)
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};
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foreach (var corner in corners)
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{
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Draw.Disc(corner, cornerSize, cornerColor);
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}
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}
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}
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/// <summary>
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/// 设置覆盖区域（可以从 LanguageParticleManager 获取 Canvas 区域）
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/// </summary>
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public void SetArea(Vector3 center, Vector2 size)
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{
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areaCenter = center;
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areaSize = size;
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}
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/// <summary>
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/// 设置效果强度（0-1）
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/// </summary>
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public void SetIntensity(float intensity)
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{
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intensity = Mathf.Clamp01(intensity);
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noiseIntensity = intensity * 0.15f;
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scanlineIntensity = intensity * 0.1f;
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flickerIntensity = intensity * 0.05f;
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vignetteIntensity = intensity * 0.3f;
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}
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private void OnDrawGizmosSelected()
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{
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// 在编辑器中显示效果区域
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Gizmos.color = new Color(0f, 1f, 0f, 0.3f);
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Gizmos.DrawWireCube(areaCenter, new Vector3(areaSize.x, areaSize.y, 0.01f));
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}
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}
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}
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