89 lines
3.1 KiB
C#
89 lines
3.1 KiB
C#
using System;
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using System.Collections.Generic;
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using UnityEngine;
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using System.Runtime.InteropServices;
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namespace Obi{
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public class ObiDistanceFieldShapeTracker : ObiShapeTracker
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{
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public ObiDistanceField distanceField;
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ObiDistanceFieldHandle handle;
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public ObiDistanceFieldShapeTracker(ObiCollider source, Component collider, ObiDistanceField distanceField){
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this.source = source;
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this.collider = collider;
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this.distanceField = distanceField;
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}
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/**
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* Forces the tracker to update distance field data during the next call to UpdateIfNeeded().
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*/
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public void UpdateDistanceFieldData()
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{
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ObiColliderWorld.GetInstance().DestroyDistanceField(handle);
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}
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public override void UpdateIfNeeded ()
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{
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bool trigger = false;
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if (collider is Collider) trigger = ((Collider)collider).isTrigger;
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else if (collider is Collider2D) trigger = ((Collider2D)collider).isTrigger;
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// retrieve collision world and index:
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var world = ObiColliderWorld.GetInstance();
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int index = source.Handle.index;
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// decrease reference count of current handle if the df data it points to is different
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// than the df used by the collider:
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if (handle != null && handle.owner != distanceField)
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{
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if (handle.Dereference())
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world.DestroyDistanceField(handle);
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}
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if (handle == null || !handle.isValid)
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{
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handle = world.GetOrCreateDistanceField(distanceField);
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handle.Reference();
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}
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// update collider:
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var shape = world.colliderShapes[index];
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shape.type = ColliderShape.ShapeType.SignedDistanceField;
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shape.filter = source.Filter;
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shape.SetSign(source.Inverted);
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shape.isTrigger = trigger;
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shape.rigidbodyIndex = source.Rigidbody != null ? source.Rigidbody.Handle.index : -1;
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shape.materialIndex = source.CollisionMaterial != null ? source.CollisionMaterial.handle.index : -1;
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shape.forceZoneIndex = source.ForceZone != null ? source.ForceZone.Handle.index : -1;
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shape.contactOffset = source.Thickness;
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shape.dataIndex = handle.index;
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world.colliderShapes[index] = shape;
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// update bounds:
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var aabb = world.colliderAabbs[index];
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aabb.FromBounds(distanceField.FieldBounds.Transform(source.transform.localToWorldMatrix), shape.contactOffset);
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world.colliderAabbs[index] = aabb;
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// update transform:
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var trfm = world.colliderTransforms[index];
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trfm.FromTransform3D(source.transform, source.Rigidbody as ObiRigidbody);
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world.colliderTransforms[index] = trfm;
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}
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public override void Destroy()
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{
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base.Destroy();
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if (handle != null && handle.Dereference())
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ObiColliderWorld.GetInstance().DestroyDistanceField(handle);
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}
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}
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}
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