Java tutorial
/* * Copyright (c) 2018 eaglgenes101 * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.tussle.motion; import com.tussle.collision.CollisionStadium; import com.tussle.collision.ProjectionVector; import com.tussle.collision.StageElement; import org.apache.commons.lang3.tuple.Pair; import java.util.LinkedHashMap; public class CollisionMap extends LinkedHashMap<Pair<StageElement<CollisionStadium>, StageElement>, ProjectionVector> { public ProjectionVector get(StageElement<CollisionStadium> c, StageElement s) { //Ah well, looks like I'm going to have to use a transient pair return get(Pair.of(c, s)); } public ProjectionVector put(StageElement<CollisionStadium> c, StageElement s, ProjectionVector p) { return put(Pair.of(c, s), p); } }