Radar: fade in/out statt hartem Enable-Toggle

Gemeinsamer 0..1-Fade-Faktor treibt Disc-Alpha (baseAlpha * fade via MPB),
Blip-Alpha (RadarTarget, im Gleichschritt) und Radar-Scale (0.8 -> 1.0).
Fade-in/-out-Speed separat einstellbar; Kamera bleibt an solange fade > 0.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Assets/Scripts/Components/Radar.cs

@@ -8,8 +8,10 @@ using UnityEngine;
 /// destroys itself after a given lifetime. See <see cref="RadarTarget"/> for the per-blip behaviour.
 ///
 /// The whole radar overlay is only shown while it is useful: at least one live target, first-person is active,
-/// AND the match is in its Seek phase. It is hidden by switching the overlay camera's rendering off (not by
-/// deactivating the GameObjects), so hidden blips keep counting down their lifetime and self-destruct on schedule.
+/// AND the match is in its Seek phase. Instead of snapping on/off it fades: a shared 0..1 factor (<see cref="CurrentFade"/>)
+/// drives the alpha of every (transparent) radar renderer - the disc here, the blip points in <see cref="RadarTarget"/> -
+/// and scales the disc from <see cref="hiddenScale"/> up to 1. Fade-in and fade-out speeds are independent. The overlay
+/// camera is switched off only once fully faded out, so hidden blips keep counting down their lifetime meanwhile.
 /// </summary>
 [DisallowMultipleComponent]
 public sealed class Radar : MonoBehaviour
@@ -31,9 +33,28 @@ public sealed class Radar : MonoBehaviour
     [Tooltip("First-person rig. The radar is only shown while first-person is active. Empty = found automatically.")]
     [SerializeField] private FirstPersonController firstPerson;
 
+    [Header("Fade")]
+    [Tooltip("Fade-in speed in alpha units per second (0 -> 1). e.g. 5 = ~0.2s to fully appear.")]
+    [SerializeField] private float fadeInSpeed = 5f;
+    [Tooltip("Fade-out speed in alpha units per second (1 -> 0). e.g. 3 = ~0.33s to fully vanish.")]
+    [SerializeField] private float fadeOutSpeed = 3f;
+    [Tooltip("Disc scale multiplier while fully hidden (fade 0); grows to 1 as it fades in, and back down on fade-out.")]
+    [SerializeField] private float hiddenScale = 0.8f;
+
     // Live blips, pruned as they self-destruct; the radar shows only while at least one is alive.
     private readonly List<RadarTarget> _blips = new List<RadarTarget>();
 
+    // Shared 0..1 visibility factor: drives disc/blip alpha and disc scale. Ramped in LateUpdate.
+    private float _fade;
+    /// <summary>Current 0..1 fade factor. Blips multiply their point alpha by this so they fade in step with the disc.</summary>
+    public float CurrentFade => _fade;
+
+    private Vector3 _baseScale;                  // authored disc scale, captured once; fade lerps hiddenScale..1 on top
+    private Renderer[] _staticRenderers;         // radar's own renderers (the disc); the template subtree is excluded
+    private Color[] _staticBaseColors;           // their full-opacity _BaseColor; alpha is scaled by _fade each frame
+    private MaterialPropertyBlock _mpb;
+    private static readonly int BaseColorId = Shader.PropertyToID("_BaseColor");
+
     private void Awake()
     {
         Instance = this;
@@ -47,7 +68,30 @@ public sealed class Radar : MonoBehaviour
         if (!radarCamera) radarCamera = GetComponentInParent<Camera>();
         if (!firstPerson) firstPerson = FindFirstObjectByType<FirstPersonController>(FindObjectsInactive.Include);
 
-        ApplyVisibility(false); // hidden until a target exists, first-person is live AND the match is seeking
+        _baseScale = transform.localScale;
+        CacheStaticRenderers();
+
+        _fade = 0f;                 // hidden until a target exists, first-person is live AND the match is seeking
+        ApplyFade();
+    }
+
+    // Gathers the radar's own renderers (the disc) once, with their full-opacity _BaseColor, so their alpha can be
+    // scaled by _fade each frame. The "Target Template" subtree is skipped: it is the blip prototype, and its clones
+    // fade themselves via RadarTarget (which owns their per-blip colour).
+    private void CacheStaticRenderers()
+    {
+        var all = GetComponentsInChildren<Renderer>(true);
+        var renderers = new List<Renderer>(all.Length);
+        var colors = new List<Color>(all.Length);
+        foreach (var r in all)
+        {
+            if (targetTemplate && r.transform.IsChildOf(targetTemplate)) continue;
+            renderers.Add(r);
+            var mat = r.sharedMaterial;
+            colors.Add(mat && mat.HasProperty(BaseColorId) ? mat.GetColor(BaseColorId) : Color.white);
+        }
+        _staticRenderers = renderers.ToArray();
+        _staticBaseColors = colors.ToArray();
     }
 
     private void OnDestroy()
@@ -93,7 +137,14 @@ public sealed class Radar : MonoBehaviour
             if (!_blips[i]) _blips.RemoveAt(i);
 
         bool visible = _blips.Count > 0 && firstPerson && firstPerson.enabled && InSeekPhase();
-        ApplyVisibility(visible);
+
+        // Ramp the shared factor toward shown/hidden with the matching speed, so the whole overlay fades
+        // (alpha + scale) instead of snapping. A mid-fade visibility flip reverses smoothly.
+        float target = visible ? 1f : 0f;
+        float speed = Mathf.Max(0f, visible ? fadeInSpeed : fadeOutSpeed);
+        _fade = Mathf.MoveTowards(_fade, target, speed * Time.deltaTime);
+
+        ApplyFade();
     }
 
     // The radar only makes sense during the seek phase (hunters chasing hiders). Blips only spawn then anyway,
@@ -104,12 +155,30 @@ public sealed class Radar : MonoBehaviour
         return m && m.MatchActive && m.LocalSubPhase == MatchManager.MatchSubPhase.Seek;
     }
 
-    // Shows/hides the whole radar overlay in one toggle (disc + blips) by switching the overlay camera's
-    // rendering. The GameObjects stay active, so blips keep ticking down their lifetime while hidden. The
-    // overlay renders only the Radar layer, so nothing else is affected.
-    private void ApplyVisibility(bool visible)
+    // Applies the current _fade to the whole overlay: disc scale (hiddenScale..1), disc alpha (baseAlpha*fade),
+    // and the overlay camera - switched off only once fully faded out, so blips keep ticking their lifetime while
+    // hidden and no rendering happens for an invisible radar. Blips fade themselves via RadarTarget/CurrentFade.
+    private void ApplyFade()
     {
-        if (radarCamera && radarCamera.enabled != visible)
-            radarCamera.enabled = visible;
+        transform.localScale = _baseScale * Mathf.Lerp(hiddenScale, 1f, _fade);
+
+        if (_staticRenderers != null)
+        {
+            _mpb ??= new MaterialPropertyBlock();
+            for (int i = 0; i < _staticRenderers.Length; i++)
+            {
+                var r = _staticRenderers[i];
+                if (!r) continue;
+                Color c = _staticBaseColors[i];
+                c.a *= _fade;
+                r.GetPropertyBlock(_mpb);
+                _mpb.SetColor(BaseColorId, c);
+                r.SetPropertyBlock(_mpb);
+            }
+        }
+
+        bool render = _fade > 0.0001f;
+        if (radarCamera && radarCamera.enabled != render)
+            radarCamera.enabled = render;
     }
 }

Assets/Scripts/Components/RadarTarget.cs

@@ -27,6 +27,7 @@ public sealed class RadarTarget : MonoBehaviour
     private bool _initialised;
 
     private MaterialPropertyBlock _mpb;
+    private Color _pointColor = Color.white;   // last gradient-evaluated point colour; its alpha is scaled by the radar fade
     private static readonly int BaseColorId = Shader.PropertyToID("_BaseColor");
 
     public Transform Target => _target;
@@ -40,6 +41,7 @@ public sealed class RadarTarget : MonoBehaviour
         _age = 0f;
         _initialised = true;
         Aim();
+        PushPointColor();
     }
 
     // LateUpdate so the aim uses the camera's final position/rotation for this frame.
@@ -62,6 +64,7 @@ public sealed class RadarTarget : MonoBehaviour
         }
 
         Aim();
+        PushPointColor(); // every frame so the blip's alpha tracks the radar fade even when Aim early-returns
     }
 
     private void Aim()
@@ -88,13 +91,25 @@ public sealed class RadarTarget : MonoBehaviour
     }
 
     // Tints the point's base colour by how far the target sits ahead of (0) vs directly behind (1) the camera.
+    // Only caches the colour here; PushPointColor writes it (with the fade applied) so the alpha can track the
+    // radar fade every frame independent of when the bearing last changed.
     private void ApplyForwardColor(Vector3 dirNormalized)
     {
-        if (!pointRenderer || forwardGradient == null) return;
+        if (forwardGradient == null) return;
         float t = Vector3.Angle(_camera.transform.forward, dirNormalized) / 180f;
+        _pointColor = forwardGradient.Evaluate(t);
+    }
+
+    // Writes the point's _BaseColor with its alpha scaled by the radar's shared fade factor, so blips fade in/out
+    // in step with the disc instead of the overlay snapping on/off.
+    private void PushPointColor()
+    {
+        if (!pointRenderer) return;
+        Color c = _pointColor;
+        c.a *= Radar.Instance ? Radar.Instance.CurrentFade : 1f;
         _mpb ??= new MaterialPropertyBlock();
         pointRenderer.GetPropertyBlock(_mpb);
-        _mpb.SetColor(BaseColorId, forwardGradient.Evaluate(t));
+        _mpb.SetColor(BaseColorId, c);
         pointRenderer.SetPropertyBlock(_mpb);
     }
 }