AdvGroupIgnorer.cs

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#region MIT License
/*
 * Copyright (c) 2005-2008 Jonathan Mark Porter. http://physics2d.googlepages.com/
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy 
 * of this software and associated documentation files (the "Software"), to deal 
 * in the Software without restriction, including without limitation the rights to 
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of 
 * the Software, and to permit persons to whom the Software is furnished to do so, 
 * subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be 
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */
#endregion
 
 
 
#if UseDouble
using Scalar = System.Double;
#else
using Scalar = System.Single;
#endif
using System;
using Jypeli.Physics;
 
namespace Jypeli
{
    public class AdvGroupIgnorer : Ignorer
    {
        GroupCollection groups;
        GroupCollection ignoredGroups;
        public AdvGroupIgnorer()
        {
            this.groups = new GroupCollection();
            this.ignoredGroups = new GroupCollection();
        }
        protected AdvGroupIgnorer( AdvGroupIgnorer copy )
            : base( copy )
        {
            this.groups = new GroupCollection( copy.groups );
            this.groups = new GroupCollection( copy.ignoredGroups );
        }
        public override bool BothNeeded
        {
            get { return true; }
        }
        public GroupCollection Groups { get { return groups; } }
        public GroupCollection IgnoredGroups { get { return ignoredGroups; } }
        public bool CanCollide( AdvGroupIgnorer other )
        {
            if ( other == null ) { throw new ArgumentNullException( "other" ); }
            return CanCollideInternal( other );
        }
        private bool CanCollideInternal( AdvGroupIgnorer other )
        {
            return !GroupCollection.Intersect( ignoredGroups, other.groups );
        }
        public override bool CanCollide( IPhysicsBody thisBody, IPhysicsBody otherBody, Ignorer other )
        {
            AdvGroupIgnorer value = other as AdvGroupIgnorer;
            return
                value == null ||
                CanCollideInternal( value );
        }
        public virtual object Clone()
        {
            return new AdvGroupIgnorer( this );
        }
    }
}