48b42992ee
IGrabPresenter.Grab(GrabEvent) only; the binder's Transform and velocity resolvers go. TractorBeam presents a running grab (aims at Started's TargetPosition, emits at Power, dark otherwise). FieldDriver draws its tendril from GrabEvents alone with a real-time phase clock over each event's PhaseDuration and writes no transform and destroys nothing; its grab times move to FieldTester, now the scene's stand-in sim that owns its pickup's timeline and pose. ItemPickup keeps its label lit while held. ImpactPresenterSmoke becomes CapabilityPresentationSmoke with a grab section; its two untracked-ship expectations follow DrawsAt since contact-hud. Builds (Unity 6000.3.24f1 batchmode: smoke ok, scene opens, no missing script). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
51 lines
1.8 KiB
C#
51 lines
1.8 KiB
C#
using System;
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using UnityEngine;
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using CultMath.UnityBridge;
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// Presents the ship's grab: while the simulation holds an item, the beam looks along the ground-plane vector to the
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// point the item was held from and emits at Power. Zone pulls the held item along the segment from the ship to that
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// point (docs/aetheria-release-map.md L11), which is why GrabEvent.TargetPosition on Started is the exact aim and no
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// pose lookup is needed. Idle, the beam turns with Direction and emits nothing. The simulation decides every grab fact.
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public class TractorBeam : MonoBehaviour, IGrabPresenter
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{
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public ParticleSystem ParticleSystem;
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public float Power { get; set; }
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public Vector3 Direction { get; set; }
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private bool _grabbing;
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private Vector3 _heldPoint;
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private Vector3 _heldDirection;
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// Cancelled can carry no position (a vanished item), so only Started is read for one.
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public void Grab(GrabEvent e)
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{
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switch (e.Phase)
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{
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case GrabPhase.Started:
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_grabbing = true;
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_heldPoint = e.TargetPosition.ToUnity();
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_heldDirection = Direction;
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break;
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case GrabPhase.Completed:
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case GrabPhase.Cancelled:
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_grabbing = false;
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break;
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}
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}
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public void Update()
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{
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var look = Direction;
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if (_grabbing)
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{
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var toHeld = _heldPoint - transform.position;
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toHeld.y = 0;
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if (toHeld.sqrMagnitude > 1e-6f) _heldDirection = toHeld;
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look = _heldDirection;
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}
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transform.rotation = Quaternion.LookRotation(look);
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var emission = ParticleSystem.emission;
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emission.rateOverTimeMultiplier = _grabbing ? Power : 0;
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}
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}
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