001package ball.game.ant.taskdefs; 002/*- 003 * ########################################################################## 004 * Game Applications and Utilities 005 * $Id: LifeTask.java 5285 2020-02-05 04:23:21Z ball $ 006 * $HeadURL: svn+ssh://svn.hcf.dev/var/spool/scm/repository.svn/ball-game/trunk/src/main/java/ball/game/ant/taskdefs/LifeTask.java $ 007 * %% 008 * Copyright (C) 2010 - 2020 Allen D. Ball 009 * %% 010 * Licensed under the Apache License, Version 2.0 (the "License"); 011 * you may not use this file except in compliance with the License. 012 * You may obtain a copy of the License at 013 * 014 * http://www.apache.org/licenses/LICENSE-2.0 015 * 016 * Unless required by applicable law or agreed to in writing, software 017 * distributed under the License is distributed on an "AS IS" BASIS, 018 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 019 * See the License for the specific language governing permissions and 020 * limitations under the License. 021 * ########################################################################## 022 */ 023import ball.game.life.Board; 024import ball.game.life.Game; 025import ball.util.ant.taskdefs.AnnotatedAntTask; 026import ball.util.ant.taskdefs.AntTask; 027import ball.util.ant.taskdefs.ClasspathDelegateAntTask; 028import ball.util.ant.taskdefs.ConfigurableAntTask; 029import java.math.BigInteger; 030import lombok.Getter; 031import lombok.NoArgsConstructor; 032import lombok.Setter; 033import lombok.ToString; 034import lombok.experimental.Accessors; 035import org.apache.tools.ant.BuildException; 036import org.apache.tools.ant.Task; 037import org.apache.tools.ant.util.ClasspathUtils; 038 039import static org.apache.commons.lang3.StringUtils.EMPTY; 040 041/** 042 * {@link.uri http://ant.apache.org/ Ant} {@link Task} to start {@link Game} 043 * of Life simulation. 044 * 045 * {@ant.task} 046 * 047 * @author {@link.uri mailto:ball@hcf.dev Allen D. Ball} 048 * @version $Revision: 5285 $ 049 */ 050@AntTask("life") 051@NoArgsConstructor @ToString 052public class LifeTask extends Task implements AnnotatedAntTask, 053 ClasspathDelegateAntTask, 054 ConfigurableAntTask { 055 @Getter @Setter @Accessors(chain = true, fluent = true) 056 private ClasspathUtils.Delegate delegate = null; 057 @Getter @Setter 058 private int height = 0; 059 @Getter @Setter 060 private int width = 0; 061 @Getter 062 private BigInteger state0 = BigInteger.ZERO; 063 064 public void setState0(String state0) { this.state0 = parse(state0); } 065 066 public void addText(String text) { setState0(text); } 067 068 private BigInteger parse(String string) { 069 BigInteger state = null; 070 071 try { 072 state = new BigInteger(string); 073 } catch (NumberFormatException exception) { 074 state = BigInteger.ZERO; 075 string = string.replaceAll("[\\p{Space}]+", EMPTY); 076 077 for (int i = 0, n = string.length(); i < n; i += 1) { 078 switch (string.charAt(i)) { 079 case '+': 080 state = state.setBit(i); 081 break; 082 083 case '-': 084 default: 085 state = state.clearBit(i); 086 break; 087 } 088 } 089 } 090 091 return state; 092 } 093 094 @Override 095 public void init() throws BuildException { 096 super.init(); 097 ClasspathDelegateAntTask.super.init(); 098 ConfigurableAntTask.super.init(); 099 } 100 101 @Override 102 public void execute() throws BuildException { 103 super.execute(); 104 AnnotatedAntTask.super.execute(); 105 106 try { 107 Game game = new Game(getHeight(), getWidth(), getState0()); 108 Board board = new Board(game); 109 110 for (;;) { 111 log(); 112 log("Generation #" + String.valueOf(game.size() - 1)); 113 log(board); 114 115 BigInteger state = game.automata().next(game.getLast()); 116 117 if (! game.contains(state)) { 118 game.addLast(state); 119 continue; 120 } else { 121 log("Steady state: Returned to Generation #" 122 + String.valueOf(game.indexOf(state))); 123 break; 124 } 125 } 126 } catch (BuildException exception) { 127 throw exception; 128 } catch (Throwable throwable) { 129 throwable.printStackTrace(); 130 throw new BuildException(throwable); 131 } 132 } 133}