73 lines
2.4 KiB
C#
73 lines
2.4 KiB
C#
using System;
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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 ObiEdgeShapeTracker2D : ObiShapeTracker
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{
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ObiEdgeMeshHandle handle;
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public ObiEdgeShapeTracker2D(ObiCollider2D source, EdgeCollider2D collider)
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{
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this.source = source;
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this.collider = collider;
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}
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public void UpdateEdgeData()
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{
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ObiColliderWorld.GetInstance().DestroyEdgeMesh(handle);
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}
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public override void UpdateIfNeeded (){
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EdgeCollider2D edgeCollider = collider as EdgeCollider2D;
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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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// get or create the mesh:
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if (handle == null || !handle.isValid)
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{
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handle = world.GetOrCreateEdgeMesh(edgeCollider);
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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.is2D = true;
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shape.type = ColliderShape.ShapeType.EdgeMesh;
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shape.filter = source.Filter;
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shape.SetSign(source.Inverted);
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shape.isTrigger = edgeCollider.isTrigger;
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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.center = edgeCollider.offset;
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shape.contactOffset = source.Thickness + edgeCollider.edgeRadius;
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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(edgeCollider.bounds, shape.contactOffset, true);
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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.FromTransform2D(edgeCollider.transform, source.Rigidbody as ObiRigidbody2D);
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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().DestroyEdgeMesh(handle);
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}
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}
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}
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