3da1622478
OpacityAt is already saturated to 0..1 by the sim, so a 0.3 vent reads thinner than a full cloud and nothing above full draws thinner. Builds (Unity compile run after). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
44 lines
1.8 KiB
C#
44 lines
1.8 KiB
C#
using CultMath;
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using CultMath.UnityBridge;
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using UnityEngine;
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// How one vented vapour cloud looks: a fog-bank brush painted into the Patch layer, which the volumetric pass reads as
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// patch thickness. Zone owns every cloud fact (existence, body, radius, opacity); this reads them and draws, and writes
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// nothing back (rulings vapour-cloud-obscuration, unity-presents-only-r3). The brush's depth scales with the sim's OpacityAt, so the bank fades to nothing at the cloud's lifetime.
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public class VapourCloudInstance : MonoBehaviour
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{
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// The world height the scene's patch brushes sit at (Depth Micro), inside the Patch camera's clip range.
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public float PatchHeight = -5f;
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private static readonly int Depth = Shader.PropertyToID("_Depth");
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private Zone _zone;
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private VapourCloud _cloud;
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private MeshRenderer _renderer;
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private MaterialPropertyBlock _block;
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private float _authoredDepth;
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public void Bind(Zone zone, VapourCloud cloud)
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{
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_zone = zone;
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_cloud = cloud;
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_renderer = GetComponent<MeshRenderer>();
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_block = new MaterialPropertyBlock();
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_authoredDepth = _renderer.sharedMaterial.GetFloat(Depth);
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Place();
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}
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private void Update() => Place();
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private void Place()
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{
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var p = DrawAhead.Position(_cloud.Body, ActionGameManager.Clock.Lead);
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transform.position = new Vector3(p.x, PatchHeight, p.y);
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transform.localScale = Vector3.one * (2f * _cloud.Radius);
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// The sim's own opacity, already saturated to 0..1 (VapourCloud.OpacityAt); the presenter adds no rule of its own.
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_renderer.GetPropertyBlock(_block);
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_block.SetFloat(Depth, _authoredDepth * _cloud.OpacityAt(_zone.Time));
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_renderer.SetPropertyBlock(_block);
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}
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}
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