异形战争

这场比赛发生在一个非常拥挤的星球上，外星人是最出色的种族。您的任务是创建自己的外星人并击败其他所有外星人。

董事会

这是一个二维板。
木板一侧的长度Math.ceil(sqrt(species * 100 * 2.5))约为所用木板的40％。棋盘是一颗行星，因此，如果您走出西部的地图，便会回到东部。如果您在北部走出去，就会发现自己在南部。

能力

地球上的每个物种都有能力。他们来了：

名称        受益 
寿命HP = lifeLVL * 5（每次击中都会减少，0 =死亡），基本HP = 10
强度你的命中值在[1至强度LVL]伤害范围内随机产生一个整数
防御在[0到（50 / 防御LVL + 1）] 范围内随机选择int ，如果int == 0，则躲避下一次攻击
视力带给您视力LVL / 2视野
机灵当发送给其他外星人时，会随机模糊（增加）[从0到clevernessLVL / 2]
 范围内的每个能力

游戏

• 每个提交将有100个实例。
• 实例化后，每个外星人总共可以设置10个能力点。您可以为每个实例设置不同的点。
• 如果设置的点数超过10，实例将死亡。
• 一场比赛包括1000发回合。每轮：
  • 每个外星人都必须通过来退回行动move(char[] fields)。这包括Move.STAY。
  • 如果有几个外星人在场上，将随机选择2个：
    • 如果双方都同意和平（返回错误wantToFight），他们将留在原地，否则他们将战斗。
    • 这样循环直到只有一个外星人留在田野上或者所有人都同意和平。

• 如果一个外星人杀死了某些东西，他将获得每一种敌人技能的1/5。获胜者HP将被补充2 * 敌意生命LVL。

• 胜利者是最有能力的人（活着的外星人的能力之和）。

打架

两个外星人都将“同时打对方”，这意味着如果您杀死另一个外星人，他仍然可以打您一次。

躲避：在您被击中之前，游戏会计算您是否可以使用躲避攻击rand.nextInt(50 / defenseLvl + 1) == 0。在计算道奇技能时，defenceLvl绝不会大于50（因此，最大道奇机会为50％）。

击中：如果不躲避攻击，则会受到打击，并且HP会降低rand.nextInt(enemy.getStrengthLvl()) + 1。

当涉及的一个或两个外国人死亡时，战斗结束。获胜者（如果存在）获得奖励。

游戏规则

• 每个技能的基本等级（不给出任何技能点）为1（基本HP为10）。
• 当要求战斗时发送的值是生命（不是生命值！），力量，防御力和视野水平。
• 当要求战斗时，不会发送聪明。
• 使用/发送所有浮点数时，它们都会被舍入到最接近的整数，但会以浮点数形式存储和增加。
• 最大闪避几率是50％。否则，战斗可能永远不会终止。

猎物

已有5种在场上。由于它们是猎物，因此他们在被要求时选择不战斗。

鲸鱼：10级生命住宿   
牛：10级力量随机移动
海龟：10级防御西南
鹰：10级视野检查领域，试图避免危险      
人类：10级智慧东北

它们将W在地图中以他们的第一个字母（即鲸鱼）表示（外星人带有A，空格为空白' '）。

附加规则

• 禁止反思。
• 禁止与其他外星人互动（实例化等）。
• 也不允许读写文件或数据库之类的外部资源。
• 仅允许Java（版本1.8）提交（Java非常简单，您不必是此游戏的专家）。
• 所有提交的内容都必须扩展外星人类别，并将其放入外星人包中。
• 我将在7月19日接受最佳外星人的邀请。在当天UTC 12:00之前提交的所有外国人都将接受测试。
• 由于已经有很多外星人，因此每位用户最多只能提交3个信息。

外星人的例子

package alien;

import planet.Move;

public class YourUniqueNameHere extends Alien {

    public void setAbilityPoints(float[] abilities) {
        abilities[0] = 2; //life
        abilities[1] = 2; //strength
        abilities[2] = 2; //defense
        abilities[3] = 2; //vision
        abilities[4] = 2; //cleverness
    }

    public Move move(char[][] fields) {
        //you are in the middle of the fields, say fields[getVisionFieldsCount()][getVisionFieldsCount()]
        return Move.STAY;
    }

    public boolean wantToFight(int[] enemyAbilities) {
        //same order of array as in setAbilityPoints, but without cleverness
        return true;
    }

}

控制程序

控制程序的源代码可以在这里找到。现在更新了最新运行中包含的所有外星人。

最终比分（20.07.2014，平均10场比赛）

异族PredicatClaw 1635.4
懒人1618.8
漫画家LongVisionAlien 1584.6
选择你的战斗1571.2
弯曲者1524.5
外星人HerjanAlien 1507.5
外星人.FunkyBob 1473.1
Alien.SecretWeapon2 1467.9
外国人眼1457.1
Alien.CorporateAlien 1435.9
外星人GentleGiant 1422.4
Alien.CropCircleAlien 1321.2
VanPelt 1312.7
NewGuy 1270.4外星人
香蕉皮1162.6
1159.2号外星人
外星人.BullyAlien 1106.3
杰弗里778.3
秘密武器754.9
Alien.SecretWeapon3 752.9
外星人.FunkyJack 550.3
石头369.4
刺客277.8
外星人Predicoward 170.1
捕食者牛155.2
外星人变形105.3
埃里99.6
战士69.7
猎人56.3
外星人37.6
冲绳生活14.2
捕食鲸10.5
外星人玩家4.5
Alien.Randomite 0
守卫者0
猎物。鹰0
外星人0
Alien.WeakestLink 0
外国人0   
幸存者0
速度0
外星人。垃圾0
外星人Co夫0
Alien.CleverAlien 0
猎物人类0
外星人盲目的0
猎物。海龟0
Alien.AimlessWanderer 0

PredicatClaw（原始）

如果您根据她的预测算法看起来很虚弱，那么这个猫科动物的外星人将整个吞下您（好吧，也许她会先给您一点咀嚼）。

一种比其他同类具有更尖的爪和尖牙的谓词。

编辑：新的目标优先事项

package alien;

import planet.Move;

/* Predict + Cat = Predicat! */
public class PredicatClaw extends Alien {
    private static final int LIF=0, STR=1, DEF=2;
    private static final int WHALE=6, COW=1, TURTLE=4, EAGLE=3, HUMAN=2, ALIEN=-1, NONE=0;

    @Override
    public void setAbilityPoints( float[] abilities ) {
        abilities[LIF] = 4.5f;
        abilities[STR] = 5.5f;
    }

    @Override
    public Move move( char[][] fields ) {

        /* Some credits to Eagle for letting me learn how to do the moves */
        int vision = getVisionFieldsCount(); //count of fields / middle
        int fieldX;
        int fieldY;
        Move bestMove=Move.STAY;
        int bestScore=-1;

       for (Move move : Move.values()) {
            fieldX = vision + move.getXOffset();
            fieldY = vision + move.getYOffset();
            switch(fields[fieldX][fieldY]){
            case 'W' : 
                if(bestScore<WHALE){
                    bestMove=move;
                    bestScore=WHALE;
                }
                break;
            case 'C' :
                if(bestScore<COW){
                    bestMove=move;
                    bestScore=COW;
                }
                break;
            case 'T' :
                if(bestScore<TURTLE){
                    bestMove=move;
                    bestScore=TURTLE;
                }
                break;
            case 'E' :
                if(bestScore<EAGLE){
                    bestMove=move;
                    bestScore=EAGLE;
                }
                break;
            case 'H' :
                if(bestScore<HUMAN){
                    bestMove=move;
                    bestScore=HUMAN;
                }
                break;
            case 'A' :
                if(bestScore<ALIEN){
                    bestMove=move;
                    bestScore=ALIEN;
                }
                break;
            case ' ' :
                if(bestScore<NONE){
                    bestMove=move;
                    bestScore=NONE;
                }
                break;
            }
        }

        if(vision==1 && bestScore>1){
            return bestMove;
        }

        //check immediate outer field
        for (int i=vision-2; i<=vision+2; i++) {
            for(int j=vision-2; j<=vision+2; j++){
                if(i==0 || i==4 || j==0 || j==4){
                    switch(fields[i][j]){
                    case 'W' :
                        bestMove = this.getBestMoveTo(i,j);
                        bestScore = WHALE;
                        break;
                    case 'C' :
                        if(bestScore<COW){
                            bestMove = this.getBestMoveTo(i,j);
                            bestScore = COW;
                        }
                        break;
                    case 'T' :
                        if(i>=vision && j<=vision){
                            return this.getBestMoveTo(i-1,j+1);
                        }
                        if(bestScore<TURTLE){
                            bestMove = this.getBestMoveTo(i,j);
                            bestScore = TURTLE;
                        }
                        break;
                    case 'E' :
                        if(bestScore<EAGLE){
                            bestMove = this.getBestMoveTo(i,j);
                            bestScore = EAGLE;
                        }
                        break;
                    case 'H' :
                        if(i<=vision && j>=vision){
                            return this.getBestMoveTo(i+1,j-1);
                        }
                        if(bestScore<HUMAN){
                            bestMove = this.getBestMoveTo(i,j);
                            bestScore = HUMAN;
                        }
                        break;
                    case 'A' :
                        if(bestScore<ALIEN){
                            bestMove = this.getBestMoveTo(i,j);
                            bestScore = ALIEN;
                        }
                        break;
                    case ' ' :
                        if(bestScore<NONE){
                            bestMove = this.getBestMoveTo(i,j);
                            bestScore = NONE;
                        }
                        break;
                    }
                }
            }
        }

        return bestMove;
    }

    @Override
    public boolean wantToFight( int[] enemyAbilities ) {
        /*
            Fight IF
                1) I CAN BEAT YOU
                2) ????
                3) MEOW!
        */
        float e_hp = enemyAbilities[LIF]*5+10;
        float e_dmg = 1 + enemyAbilities[STR]/2;
        float e_hit = 1 - (1/(50/this.getDefenseLvl()+1));

        float m_hp = this.getCurrentHp();
        float m_dmg = 1 + this.getStrengthLvl()/2;
        float m_hit = 1 - (1/(50/enemyAbilities[DEF]+1));

        return (e_hp/(m_dmg*m_hit) < m_hp/(e_dmg*e_hit));
    }

    private Move getBestMoveTo(int visionX, int visionY){
        int vision = getVisionFieldsCount();

        if(visionX < vision && visionY < vision){
            return Move.NORTHWEST;
        }
        else if(visionX > vision && visionY < vision){
            return Move.NORTHEAST;
        }
        else if(visionX < vision && visionY > vision){
            return Move.SOUTHWEST;
        }
        else if(visionX > vision && visionY < vision){
            return Move.SOUTHEAST;
        }
        else if(visionX == vision && visionY < vision){
            return Move.NORTH;
        }
        else if(visionX == vision && visionY > vision){
            return Move.SOUTH;
        }
        else if(visionX > vision && visionY == vision){
            return Move.EAST;
        }
        else if(visionX < vision && visionY == vision){
            return Move.WEST;
        }
        else{
            return Move.WEST;
        }

    }
}

经理

这是一个经理。自然，聪明是0，他总是努力去朝着太阳不发光的地方。而且，当然，他只会与弱者抗争，并且善于规避麻烦：

public class Manager extends Alien {

    private static final int STRENGTH = 5;

    @Override
    public void setAbilityPoints( float[] abilities ) {
        abilities[/* strength   */ 1] = STRENGTH;
        abilities[/* defense    */ 2] = 5;
        abilities[/* cleverness */ 4] = 0; // just to make sure
    }

    @Override
    public Move move( char[][] fields ) {
        return Move.WEST;
    }

    @Override
    public boolean wantToFight( int[] enemyAbilities ) {
        return enemyAbilities[1] < STRENGTH;
    }
}

制图LongVisionAlien

这个外星人是我尝试生产具有获胜潜力的外星人的尝试之一，表现一致。

它具有最初的5x5视野，可用于构建周围区域的内部地图，从而具有出色的躲避敌人的能力。

在我对100发子弹的测试中，它平均比其他所有外星人都先行。（09/07/2014）

更新的GIF显示排斥/吸引场效应

我修改了游戏代码，以生成模拟的动画GIF。您可以在这里查看这样的模拟

 package alien;

 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Random;
 import planet.Move;
 import planet.Planet;

 /**
  * Created by moogie on 09/07/14.
  * 
  * This Alien attempts to map the visible and guess the movements within the immediate non-visible area around the alien.
  * To this end, the alien can initially see 5x5 grid. It applies weights on the cells of its internal map based on the 
  * prey/alien/blanks within its field of view. It then performs a simple blur to guess movements and then chooses the optimum move
  * based on the contents of its internal map.
  * 
  * If it is asked to fight, it performs battle simulations to determine whether it should nominate to fight.
  */
 public class CartographerLongVisionAlien extends Alien
 {
   private final static byte LIFE = 0, STR = 1, DEF = 2, VIS = 3, CLV = 4;

   // Plant Entity symbols
   private static final char TURTLE = 'T';
   private static final char HUMAN = 'H';
   private static final char WHALE = 'W';
   private static final char COW = 'C';
   private static final char EAGLE = 'E';
   private static final char ALIEN = 'A';
   private static final HashMap<Character, Move> preyMovement = new HashMap<>();

   static 
   {
     preyMovement.put(WHALE, Move.STAY);
     preyMovement.put(TURTLE, Move.SOUTHWEST);
     preyMovement.put(HUMAN, Move.NORTHEAST);
   };

   // Map constants
   public static final int MAP_SIZE_DIV_2 = 10;
   public static final int MAP_SIZE = MAP_SIZE_DIV_2 * 2 + 1;
   private static final int MAP_SIZE_MINUS_ONE = MAP_SIZE - 1;
   private static final double FADE_FACTOR=0.85;

   // Planet constants
   private static final int STARTING_HP = 10;
   private static final int START_HEALING_FACTOR = 5;
   private static final int MAX_DEFENCE = 50;

   // Battle Simulation constants
   private static final double AMBIGUOUS_ENEMY_HP_FACTOR = 2;
   private static final int SIMULATED_BATTLE_COUNT = 100;
   private static final int SIMULATED_BATTLE_THREASHOLD = (int)(SIMULATED_BATTLE_COUNT*1.0);

   private Random rand = new Random(Planet.rand.nextLong());

   /** The alien's map of the immediate and mid-range area */
   public double[][] map = new double[MAP_SIZE][MAP_SIZE];

   public void setAbilityPoints( float[] abilities )
   {
     // +0.5 gain due to rounding trick "borrowed" from PredicatClaw http://codegolf.stackexchange.com/a/32925/20193
     abilities[LIFE] = 3.5f; // We do need some hit points to ensure that we can survive the melee of the beginning game.
     abilities[STR] = 4.5f; // A Moderate attack strength means that we do not have to go through as many fight rounds.
     abilities[DEF] = 0; // We will get from prey and other aliens
     abilities[VIS] = 2; // A minimum of 2 is required to get a 5x5 field of view
     abilities[CLV] = 0; // We will get from prey and other aliens
   }

   /**
    * simulate alien memory fade. This allows an alien to eventually venture back to areas already traversed.
    */
   private void fadeMap()
   {
     for ( int y = 0; y < MAP_SIZE; y++ )
     {
       for ( int x = 0; x < MAP_SIZE; x++ )
       {
         map[x][y] *= FADE_FACTOR;
       }
     }
   }

   /**
    * shift the maps with the movement of the alien so that the alien is always at the centre of the map
    * 
    * @param move
    */
   private void shiftMaps( Move move )
   {
     int i, j;
     final int offsetX = -move.getXOffset();
     final int offsetY = -move.getYOffset();
     double[][] tempMap = new double[MAP_SIZE][MAP_SIZE];
     for ( int y = 0; y < MAP_SIZE; y++ )
     {
       for ( int x = 0; x < MAP_SIZE; x++ )
       {
         i = x + offsetX;
         j = y + offsetY;

         if ( i >= 0 && i <= MAP_SIZE_MINUS_ONE && j >= 0 && j <= MAP_SIZE_MINUS_ONE )
         {
           tempMap[i][j] = map[x][y];
         }
       }
     }
     map = tempMap;
   }

   /**
    * Updates a cell in the alien's map with the desirability of the entity in the cell
    * 
    * @param x
    * @param y
    * @param chr
    */
   private void updateMap( int x, int y, char chr )
   {
     // Note that these desire values are just guesses... I have not performed any analysis to determine the optimum values!
     // That said, they seem to perform adequately.
     double desire = 0;

     int i=x;
     int j=y;
     switch ( chr )
     {
       case WHALE:
         desire=2;
         break;
       case TURTLE:
       case HUMAN:
         desire=1;
         Move preyMove = preyMovement.get( chr );

         // predict movement into the future
         while ( i >= 0 && i <= MAP_SIZE_MINUS_ONE && j >= 0 && j <= MAP_SIZE_MINUS_ONE )
         {
           map[i][j] = ( map[i][j] + desire ) / 2;
           i+=preyMove.getXOffset();
           j+=preyMove.getYOffset();
           desire/=2;
         }
         break;
       case COW:
         desire = 0.5;
         break;
       case EAGLE:
         desire = 1;
         break;
       case ALIEN:
         desire = -10;
         break;
     }

     map[x][y] = ( map[x][y] + desire ) / 2;
   }

   /**
    * Apply a blur the map to simulate the movement of previously seen entities that are no longer within the field of view.
    */
   private void convolve()
   {
     double[][] tempMap = new double[MAP_SIZE][MAP_SIZE];

     int count;
     double temp;
     for ( int y = 0; y < MAP_SIZE; y++ )
     {
       for ( int x = 0; x < MAP_SIZE; x++ )
       {
         count = 0;
         temp = 0;
         for ( int i = x - 1; i < x + 2; i++ )
         {
           for ( int j = y - 1; j < y + 2; j++ )
           {
             if ( i >= 0 && i <= MAP_SIZE_MINUS_ONE && j >= 0 && j <= MAP_SIZE_MINUS_ONE )
             {
               temp += map[i][j];
               count++;
             }
           }
         }
         temp += map[x][y] * 2;
         count += 2;

         tempMap[x][y] = temp / count;
       }
     }
     map = tempMap;
   }

   /**
    * Determine the move that minimises the risk to this alien and maximises any potential reward.
    * 
    * @param fields
    * @return
    */
   private Move findBestMove( char[][] fields )
   {
     List<Move> moveOptions = new ArrayList<>();
     double bestMoveScore = -Double.MAX_VALUE;
     double score;

     // find the moves that have the best score using the alien's map
     for ( Move move : Move.values() )
     {
       int x = MAP_SIZE_DIV_2 + move.getXOffset();
       int y = MAP_SIZE_DIV_2 + move.getYOffset();
       score = map[x][y];
       if ( score == bestMoveScore )
       {
         moveOptions.add( move );
       }
       else if ( score > bestMoveScore )
       {
         bestMoveScore = score;
         moveOptions.clear();
         moveOptions.add( move );
       }
     }

     Move move = moveOptions.get( rand.nextInt( moveOptions.size() ) );

     // if the best move is to stay...
     if ( move == Move.STAY )
     {
       // find whether there are no surrounding entities in field of vision...
       int midVision = getVisionFieldsCount();
       boolean stuck = true;
       out: for ( int i = 0; i < fields.length; i++ )
       {
         for ( int j = 0; j < fields.length; j++ )
         {
           if ( !( i == midVision && j == midVision ) && fields[i][j] != ' ' )
           {
             stuck = false;
             break out;
           }
         }
       }

       // there there are no other entities within field of vision and we are healthy... choose a random move
       if ( stuck && getCurrentHp() > getLifeLvl() * 2 )
       {
         move = Move.getRandom();
       }
     }
     return move;
   }

   /**
    * Update the alien's map with the current field of vision
    * 
    * @param fields
    */
   private void mapVisibleSurroundings( char[][] fields )
   {
     int midVision = getVisionFieldsCount();

     // update the map with currently visible information
     for ( int y = -midVision; y <= midVision; y++ )
     {
       for ( int x = -midVision; x <= midVision; x++ )
       {
         char chr = fields[midVision + x][midVision + y];
         updateMap( MAP_SIZE_DIV_2 + x, MAP_SIZE_DIV_2 + y, chr );
       }
     }

     // ensure that the map where this alien currently sits is marked as empty.
     updateMap( MAP_SIZE_DIV_2, MAP_SIZE_DIV_2, ' ' );
   }

   public Move move( char[][] fields )
   {
     Move returnMove = null;

     // pre-move decision processing
     mapVisibleSurroundings( fields );
     convolve();

     returnMove = findBestMove( fields );

     // post-move decision processing
     fadeMap();
     shiftMaps( returnMove );

     return returnMove;
   }

   public boolean wantToFight( final int[] enemyAbilities )
   {
     double toughnessFactor =((double) enemyAbilities[STR])/(enemyAbilities[LIFE]*10); // a fudge-factor to ensure that whales are attacked.
     if (enemyAbilities[VIS]>=3 && enemyAbilities[LIFE]>4.5f) toughnessFactor*=3.5; // make sure that we do not attack other Cartogapher aliens 
     return winsBattleSimulation( enemyAbilities, toughnessFactor );
   }

   /**
    * Perform simulations to determine whether we will win against the enemy most of the time.
    * 
    * @param enemyAbilities
    * @return
    */
   private boolean winsBattleSimulation( int[] enemyAbilities, double toughnessFactor )
   {
     int surviveCount = 0;
     for ( int i = 0; i < SIMULATED_BATTLE_COUNT; i++ )
     {
       int estimatedEnemyHitPoints =
           STARTING_HP + (int)( enemyAbilities[LIFE] * START_HEALING_FACTOR * AMBIGUOUS_ENEMY_HP_FACTOR * toughnessFactor );
       int enemyPoints = estimatedEnemyHitPoints;
       int myHitPoints = getCurrentHp();
       int myDefenceLevel = getDefenseLvl() < MAX_DEFENCE ? getDefenseLvl() : MAX_DEFENCE;
       int enemyDefenceLevel = enemyAbilities[DEF] < MAX_DEFENCE ? enemyAbilities[DEF] : MAX_DEFENCE;

       while ( !( myHitPoints <= 0 || enemyPoints <= 0 ) )
       {
         if ( rand.nextInt( MAX_DEFENCE / myDefenceLevel + 1 ) != 0 )
         {
           myHitPoints -= rand.nextInt( enemyAbilities[STR] ) + 1;
         }

         if ( rand.nextInt( MAX_DEFENCE / enemyDefenceLevel + 1 ) != 0 )
         {
           enemyPoints -= rand.nextInt( getStrengthLvl() ) + 1;
         }
       }
       if ( myHitPoints > 0 )
       {
         surviveCount++;
       }
     }
     return ( surviveCount >= SIMULATED_BATTLE_THREASHOLD );
   }

 }

选择你的战斗

这个外星人与其他外星人背道而驰，但是却朝着猎物奔跑（只要这不会把它带向外星人）。

我使用遗传算法来帮助我选择起始值。结果表明，我们应该依靠力量和生活来度过早期的蝙蝠。视觉在以后很有用，但我们可以从战败的敌人中了解。

我们只打那些我们认为可以轻松获胜的战斗-我们估计杀死敌人需要多少步，杀死敌人需要多少步，并且只有在我们“努力两次”的情况下才加入战斗我们的对手。

package alien;

import planet.Move;

import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import static java.lang.Math.*;

public class ChooseYourBattles extends Alien {
    private static final boolean DEBUG = false;
    private static final int LIFE = 0;
    private static final int STRENGTH = 1;
    private static final int DEFENCE = 2;
    private static final int VISION = 3;
    private static final int CLEVERNESS = 4;
    private static final Set<Character> prey = new HashSet<>();
    {
        Collections.addAll(prey, 'H', 'T', 'W', 'C', 'E');
    }

    public void setAbilityPoints(float[] abilities) {
        // Rounding promotes these to 4 and 7 - 11 points!
        abilities[LIFE] = 3.5f;
        abilities[STRENGTH] = 6.5f;
    }

    @Override
    public Move move(char[][] fields) {
        if (DEBUG) {
            StringBuilder sb = new StringBuilder();
            for (int j = 0; j < 2 * getVisionFieldsCount() + 1; j++) {
                for (int i = 0; i < 2 * getVisionFieldsCount() + 1; i++) {
                    char chr = fields[i][j];
                    if (chr == ' ') chr = '.';
                    if (i == getVisionFieldsCount() && j == getVisionFieldsCount()) chr = 'X';
                    sb.append(chr);
                }
                sb.append('\n');
            }
            String view = sb.toString();
            System.out.println(this.toString());
            System.out.println(view);
        }

        Move bestMove = null;
        int bestEnemyDistance = Integer.MIN_VALUE;
        int bestPreyDistance = Integer.MAX_VALUE;

        for (Move tryMove: Move.values()) {
            int currentDistanceToEnemy = Integer.MAX_VALUE;
            int currentDistanceToPrey = Integer.MAX_VALUE;
            int x = getVisionFieldsCount() + tryMove.getXOffset();
            int y = getVisionFieldsCount() + tryMove.getYOffset();
            for (int i = 0; i < 2 * getVisionFieldsCount() + 1; i++) {
                for (int j = 0; j < 2 * getVisionFieldsCount() + 1; j++) {
                    char chr = fields[i][j];
                    if (chr == 'A' && (i != getVisionFieldsCount() || j != getVisionFieldsCount())) {
                        // Use L-infinity distance, but fll back to L-1 distance
                        int distance = max(abs(i - x), abs(j - y)) * 100 + abs(i -x) + abs(j - y);
                        if (distance < currentDistanceToEnemy) currentDistanceToEnemy = distance;
                    } else if (prey.contains(chr)) {
                        int distance = max(abs(i - x), abs(j - y)) * 100 + abs(i -x) + abs(j - y);
                        if (distance < currentDistanceToPrey) currentDistanceToPrey = distance;
                    }
                }
            }
            if (currentDistanceToEnemy > bestEnemyDistance
                    || (currentDistanceToEnemy == bestEnemyDistance && currentDistanceToPrey < bestPreyDistance)) { // Prefer to stay put
                bestMove = tryMove;
                bestEnemyDistance = currentDistanceToEnemy;
                bestPreyDistance = currentDistanceToPrey;
            }
        }

        if (DEBUG) {
            System.out.println("Going " + bestMove);
            System.out.println();
        }
        return bestMove;
    }

    @Override
    public boolean wantToFight(int[] enemyAbilities) {
        // Estimate whether likely to survive the encounter - are we at least "twice as hard" as our opponent
        return getCurrentHp() * (50.0 + getDefenseLvl()) / (enemyAbilities[STRENGTH])
                > 2.0 * (enemyAbilities[LIFE] * 5 + 10) * (50.0 + enemyAbilities[DEFENCE])/ (getStrengthLvl());
    }

    @Override
    public String toString() {
        return "ChooseYourBattles" + System.identityHashCode(this)
                + ": HP " + getCurrentHp()
                + ", LFE " + getLifeLvl()
                + ", STR " + getStrengthLvl()
                + ", DEF " + getDefenseLvl()
                + ", VIS " + getVisionLvl()
                + ", CLV " + getClevernessLvl();
    }
}

如果您想运行自己的遗传算法/育种程序，我将为此目的提供一份控制程序的分叉副本。

容基

这个外星人沉迷于某种东西。他以令人讨厌的解决方法开始战争。

当他的动作变得强壮（fix > 3）时，他很高兴坐在自己的木凳上，为任何事情准备。

但是，一旦他的修复程序开始fix <= 3失效（），他就开始朝着无法分辨的方向绊倒，试图找出发生了什么。如果要求打架，他会变得谨慎，只有在认为自己可以赢的情况下才打架。

一旦他的修复用尽，成为瘾君子，他必须重新开始恶性循环。

public class Junkie extends Alien {
    private int fix = 10;

    public void setAbilityPoints(float[] abilities) {
        abilities[0] = 4; //life
        abilities[1] = 3; //strength
        abilities[2] = 3; //defense
    }

    public Move move(char[][] fields) {
        fix -= 1;
        if (fix == 0) {
            fix = 10;
        }
        else if(fix <= 3 && fix > 0) {
            return Move.getRandom();
        }

        return Move.STAY;
    }

    public boolean wantToFight(int[] enemyAbilities) {
        if(fix > 3) {
            return true;
        }
        // Am I stronger than their defense and can I withstand their attack?
        else if(enemyAbilities[2] < getStrength() && enemyAbilities[1] < getDefense()) {
            return true;
        }

        return false;
    }
}

香蕉皮

只尝试绊倒需要重击的人。击败它不会使您更健康。

package alien;

import planet.Move;
public class BananaPeel extends Alien{
    public void setAbilityPoints(float[] abilities){
        abilities[0] = 0.5f;  // banana peels barely hold themselves together
        abilities[1] = 9.5f;  // banana peels can't help tripping people up
        abilities[2] = 0;  // banana peels can't defend themselves
        abilities[3] = 0;  // banana peels can't see
        abilities[4] = 0;  // banana peels can't think
    }

    public Move move(char[][] fields){
        return Move.STAY; // banana peels can't move
    }

    public boolean wantToFight(int[] enemyAbilities){
        return enemyAbilities[0] == 0 || enemyAbilities[1] == 0;
    }
}

范佩尔特

来自Jumanji的猎人。当他没有受伤时，他会打猎；当他受伤时，他会回避。他是他能杀人的好法官。香蕉皮不断使他绊倒，但教会了他一些新技巧。

package alien;

import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

import planet.Move;

public class VanPelt extends Alien {

    private static final int LIFE = 0;
    private static final int STRENGTH = 1;
    private static final int DEFENSE = 2;
    private static final int VISION = 3;
    private static final int CLEVER = 4;

    // we all agreed before starting to move a certain direction if we're not
    // hunting or avoiding, helps avoid self-collisions... since we can't tell 
    // who we're fighting
    private static Move randomMove = Move.getRandom();

    @Override
    public void setAbilityPoints(float[] abilities) {
        abilities[LIFE] = 3.5f;
        abilities[STRENGTH] = 6f;
        abilities[VISION] = 0.5f;
    }

    @Override
    public Move move(char[][] fields) {
        int curHealth = this.getCurrentHp();
        List<Target> targets = new LinkedList<Target>();
        int vision = getVisionFieldsCount();
        boolean foundMe = false;
        for (int x = 0; x < fields.length; x++) {
            for (int y = 0; y < fields[x].length; y++) {
                switch (fields[x][y]) {
                case ' ' :
                    continue;
                case 'A' :
                    if (!foundMe && x == vision && y == vision) {
                        foundMe = true;
                        continue;
                    }
                    break;
                }
                targets.add(new Target(-vision + x, -vision + y, fields[x][y]));
            }
        }
        // if we're low health we need to move away from danger
        double desiredX = 0;
        double desiredY = 0;
        if (curHealth < this.getLifeLvl() * 7) {
            for (Target t : targets) {
                if (t.id == 'A') {
                    // closer aliens are more dangerous
                    desiredX -= vision / t.x;
                    desiredY -= vision / t.y;
                }
            }
        } else {
            // seek and destroy closest prey
            Collections.sort(targets);
            for (Target t : targets) {
                if (t.id != 'A') {
                    desiredX = t.x;
                    desiredY = t.y;
                    break;
                }
            }
        }
        desiredX = (int)Math.signum(desiredX);
        desiredY = (int)Math.signum(desiredY);
        for (Move m : Move.values()) {
            if (m.getXOffset() == desiredX && m.getYOffset() == desiredY) {
                return m;
            }
        }

        return randomMove;
    }

    @Override
    public boolean wantToFight(int[] enemyAbilities) {
        // we don't want to fight if we're hurt
        int curHealth = this.getCurrentHp();
        if (curHealth < this.getLifeLvl() * 4) {
            return false;
        }
        // determine if we're fighting prey
        int count = 0;
        int abilityMaxed = 0;
        int total = 0;
        for (int i = 0; i < enemyAbilities.length; i++) {
            total += enemyAbilities[i];
            if (enemyAbilities[i] == 11) {
                count++;
                abilityMaxed = i;
            }
        }
        // very likely to be prey, ignoring cows... they're dangerous
        if (abilityMaxed != STRENGTH && (count == 1 || total < 10)) {
            return true;
        }

        // else use a scoring system with tinkered constants
        double score = enemyAbilities[LIFE] * 4.0 
                + enemyAbilities[DEFENSE] * 0.5 
                + enemyAbilities[STRENGTH] * 5.0;

        double myScore = this.getDefenseLvl() * 0.5 +
                this.getStrengthLvl() * 5.0 +
                this.getCurrentHp() * 2.5;

        return myScore > score * 2;
    }



    private class Target implements Comparable<Target> {
        public int x, y;
        public char id;
        public int distanceSq;

        public Target(int x, int y, char id) {
            // adjust for known movement patterns
            switch(id) {
            case 'T' :
                x += Move.SOUTHWEST.getXOffset();
                y += Move.SOUTHWEST.getYOffset();
                break;
            case 'H' :
                x += Move.NORTHEAST.getXOffset();
                y += Move.NORTHEAST.getYOffset();
                break;
            }
            this.x = x;
            this.y = y;
            this.id = id;

            distanceSq = x * x + y * y;
        }

        @Override
        public int compareTo(Target other) {
            return distanceSq - other.distanceSq;
        }
    }

}

冲绳生活

难怪我会成为最后一名。

package alien;

import planet.Move;


public class OkinawaLife extends Alien{
    public void setAbilityPoints(float[] abilities){
        abilities[0] = 8.5f;
        abilities[1] = 0.5f;
        abilities[3] = 1;
    }

    public Move move(char[][] fields){
        int vision = getVisionFieldsCount(); //count of fields / middle
        char me = fields[vision][vision]; //middle of fields
        int leastDanger = Integer.MAX_VALUE;
        Move bestMove = Move.STAY;
        for (Move move : Move.values()) {
            int danger = 0;
            for (int i = 1; i <= vision; i++) { //loop through fields in specific direction
                int fieldX = vision + (i * move.getXOffset());
                int fieldY = vision + (i * move.getYOffset());
                switch(fields[fieldX][fieldY])  {
                    case 'A': danger++;
                    case ' ': break;
                    case 'C': break;
                    case 'E': break;
                    case 'H': break;
                    default: danger--;
                }
            }
            if (danger < leastDanger) {
                bestMove = move;
                leastDanger = danger;
            }
        }
        return bestMove;
    }

    public boolean wantToFight(int[] enemyAbilities){
        return enemyAbilities[1] == 0;
    }
}

猎人

我也只是偷走了老鹰的运动，除了现在他想去探寻其他外星人以外的一切。尝试狩猎并尽可能多地捕获猎物，并且仅在看起来有很大获胜机会时才进行战斗。

package alien;

import planet.Move;

public class Hunter extends Alien   {
    private final static byte LIFE=0, STR=1, DEF=2, VIS=3, CLV=4;

    public void setAbilityPoints(float[] abilities) {
        abilities[LIFE] = 0;
        abilities[STR] = 9;
        abilities[DEF] = 0;
        abilities[VIS] = 1;
        abilities[CLV] = 0;
    }

    public Move move(char[][] fields)   {
        int vision = getVisionFieldsCount(); //count of fields / middle
        char me = fields[vision][vision]; //middle of fields
        int leastDanger = Integer.MAX_VALUE;
        Move bestMove = Move.STAY;
        for (Move move : Move.values()) {
            int danger = 0;
            for (int i = 1; i <= vision; i++) { //loop through fields in specific direction
                int fieldX = vision + (i * move.getXOffset());
                int fieldY = vision + (i * move.getYOffset());
                switch(fields[fieldX][fieldY])  {
                    case 'A': danger++;
                    case ' ': break;
                    default: danger--;
                }
            }
            if (danger < leastDanger) {
                bestMove = move;
                leastDanger = danger;
            }
        }
        return bestMove;
    }

    public boolean wantToFight(int[] enemyAbilities)    {
        return ((double)this.getCurrentHp() * this.getDefenseLvl()) / (double)enemyAbilities[STR] > (enemyAbilities[LIFE] * enemyAbilities[DEF]) / this.getStrengthLvl();
    }
}

超过9000！

package alien;

import planet.Move;

public class Over9000 extends Alien {
    public void setAbilityPoints(float[] abilities) {
        abilities[0] = 10;
    }

    public Move move(char[][] fields) {
        return Move.WEST;
    }

    public boolean wantToFight(int[] enemyAbilities) {
        return enemyAbilities[1] <= 9000;
    }

    @Override
    public int getStrengthLvl() {
        return 9001; // It's over 9000!!!!!!111
    }
}

是的，这是对作弊的公然尝试，但确实会破坏规则。如果planet.Specie最终的吸气剂被制止，这个漏洞将会关闭。

岩石

我认为它只会攻击弱者和“聪明”的人。

package alien;

import planet.Move;

public class Rock extends Alien{
    public void setAbilityPoints(float[] abilities){
        abilities[0] = 0.5f;
        abilities[1] = 9.5f;
    }

    public Move move(char[][] fields){
        return Move.STAY;
    }

    public boolean wantToFight(int[] enemyAbilities){
        return enemyAbilities[0] + enemyAbilities[1] + enemyAbilities[2] + enemyAbilities[3] < 10;
    }
}

变形

没想到别的名字了，这个家伙随机分配10点能力。几乎像冲绳生命（需要您的努力）一样移动，并且只想在他的力量大于敌人的力量时战斗。

package alien;

import planet.Move;
import java.util.Random;


public class Morphling extends Alien {

    @Override
    public void setAbilityPoints(float[] abilities) {
        Random rand = new Random();
        for(int attr = 0, maxPoints = 10, value = rand.nextInt(maxPoints); attr <5 && maxPoints > 0 ; attr++, maxPoints -=value, value = rand.nextInt(maxPoints)){
            abilities[attr] = value;
            if(attr == 4 && (maxPoints-=value) > 0){
                abilities[1]+=maxPoints;
            }
        }
    }

    @Override
    public Move move(char[][] fields) {
        int vision = getVisionFieldsCount(); //count of fields / middle
        char me = fields[vision][vision]; //middle of fields
        int leastDanger = Integer.MAX_VALUE;
        Move bestMove = Move.STAY;
        for (Move move : Move.values()) {
            int danger = 0;
            for (int i = 1; i <= vision; i++) { //loop through fields in specific direction
                int fieldX = vision + (i * move.getXOffset());
                int fieldY = vision + (i * move.getYOffset());
                switch(fields[fieldX][fieldY])  {
                    case 'A': danger++;
                    case ' ': break;
                    case 'T': break;
                    case 'E': break;
                    case 'H': break;
                    default: danger--;
                }
            }
            if (danger < leastDanger) {
                bestMove = move;
                leastDanger = danger;
            }
        }
        return bestMove;
    }

    @Override
    public boolean wantToFight(int[] enemyAbilities) {
        return getStrengthLvl() > enemyAbilities[1];
    }

}

弯曲者“弯曲”罗德里格斯

我对代码注释相当宽容。您可以在上下文中阅读它们，以了解发生了什么，但是我还将在下面添加一些片段。

摘要

该外星人的工作原理是杀死微不足道的人类很容易，并夸大了您的感知力，这会吓other其他外星人以避开。

鲸鱼和老鹰也是可弯曲的。=）

运动

向西或向南移动，除非您发现有什么有趣的东西可攻击：

• 对于已知运动的猎物，我们将它们的期望值添加到下一轮的位置。
• 对于那些我们不喜欢的人，我们将它们的期望值平均分配到可能移至下一回合的正方形之间。
  • 由于香蕉皮，外星人获得的奖励对他们现有的正方形为负。

如果您在附近找不到任何有趣的事物，请了解一下南，西还是西南是一个更有希望的选择。

选择一个或两个主要方向会减少任何给定的本德尔碰到任何同胞的机会，并且选择一个与他的主要猎物相反的方向应该有助于他更快地杀死所有人类。

我可能可以使用James_pic的遗传算法调整可取性矩阵中的数字，以获得更好的结果，但是我不知道该怎么做。

好斗

班德主要瞄准猎物，并且对他非常保守wantToFight。除非您认为自己正在与一个聪明的人打交道，否则任何超越“力量4”的人都会被回避。拥有比外星人更多的防御力和视野，可以证明聪明的人性。在某个实例的过程中，它会根据Bender自身的能力统计数据进行调整，以考虑到杀死海龟和老鹰的外星人。

package alien;

import planet.Move;
import java.util.HashMap;

/// The Bender "Kill All Humans" Alien
///
/// This alien operates on the principle that killing puny
/// Humans is easy and inflates your perceived strength,
/// which will intimidate other aliens into steering clear.
///
/// Whales and Eagles are also bendable. =)
public class Bender extends Alien {

    private static final boolean DEBUG = false;
    private final int LIF = 0, STR = 1, DEF = 2, VIS = 3, CLV = 4;
    protected static HashMap<Character, Integer> preyDesirability = new HashMap<Character, Integer>() {{
        put('A', -5);
        put('W',  5);
        put('C',  0); // Originally -2, but Cows don't attack
        put('T',  2);
        put('E',  3);
        put('H',  4);
    }};
    private static final int bananaTweak = -2;

    private static final HashMap<Character, Move> preyMovement = new HashMap<Character, Move>() {{
        put('W', Move.STAY);
        put('T', Move.SOUTHWEST);
        put('H', Move.NORTHEAST);
    }};

    public void setAbilityPoints(float[] abilities) {
        abilities[LIF] = 3.5f; // Shiny metal ass
        abilities[STR] = 5.5f; // Bending strength
        abilities[DEF] = 0;
        abilities[VIS] = 1;    // Binocular eyes
        abilities[CLV] = 0;
    }

    /// Looks for humans to intercept!
    ///
    /// Generally speaking, move either west or south
    /// unless you have found something interesting to
    /// attack:
    /// - For the prey whose movement is known, we add
    ///   their desirability to the index at which they
    ///   will be next turn.
    /// - For those we do not, we divide their desirability
    ///   equally among the squares that they may move to
    ///   next turn. Aliens get a bonus negative to their
    ///   existing square because of banana peels.
    public Move move(char[][] fields) {

        int vision = getVisionFieldsCount();
        // I am at fields[vision][vision]

        if (DEBUG) {
            System.out.format("\n----- %s -----\n", this);
        }

        float[][] scoringMap = new float[fields.length][fields.length];
        for (int y = 0; y < fields.length; y++) {
            for (int x = 0; x < fields.length; x++) {

                // Ignore my square and blanks
                if (x == vision && y == vision ||
                    fields[x][y] == ' ') {
                    continue;
                }

                // Check out the prey 8^]
                char organism = fields[x][y];
                float desirability = preyDesirability.get(organism);

                // If we know where it's going, score tiles accordingly...
                if (preyMovement.containsKey(organism)) {
                    Move preyMove = preyMovement.get(organism);
                    if (DEBUG) {
                        System.out.println(String.format("Prey %s will move %s", organism, preyMove));
                    }
                    int newPreyX = x + preyMove.getXOffset();
                    int newPreyY = y + preyMove.getYOffset();
                    try {
                        scoringMap[newPreyX][newPreyY] += desirability;
                        if (DEBUG) {
                            System.out.println(String.format(
                                "Adding %.1f to %d, %d",
                                desirability,
                                newPreyX,
                                newPreyY));
                        }
                    }
                    catch(Exception e) {
                        if (DEBUG) {
                            System.out.println(String.format(
                                "Failed adding %.1f to %d, %d",
                                desirability,
                                newPreyX,
                                newPreyY));
                        }
                    }
                }
                // ...otherwise, divide its score between its
                //    available moves...
                else {
                    for (int j = y - 1; j <= y + 1; j++) {
                        for (int i = x - 1; i <= x + 1; i++) {
                            try {
                                scoringMap[i][j] += desirability / 9.;
                            }
                            catch (Exception e) {
                                if (DEBUG) {
                                    //System.out.println(e);
                                }
                            }
                        }
                    }
                }
                // ...and if it is an alien, add a handicap
                //    for bananas and rocks.
                if (organism == 'A') {
                    scoringMap[x][y] += bananaTweak;
                }
            }
        }

        // Evaluate immediate surroundings 8^|
        //
        // +-----------+
        // |           |
        // |   # # #   |
        // |   # B #   |
        // |   # # #   |
        // |           |
        // +-----------+
        float bestScore = -10;
        int[] bestXY = new int[2];
        for (int y = vision - 1; y <= vision + 1; y++) {
            for (int x = vision - 1; x <= vision + 1; x++) {

                if (DEBUG) {
                    System.out.format("\nx:%d, y:%d", x, y);
                }
                // Look for the best score, but if scores
                // are tied, try for most southwest high score
                if (scoringMap[x][y] > bestScore ||
                    scoringMap[x][y] == bestScore && (
                        x <= bestXY[0] && y > bestXY[1] ||
                        y >= bestXY[1] && x < bestXY[0])
                    ) {
                    bestScore = scoringMap[x][y];
                    bestXY[0] = x;
                    bestXY[1] = y;
                    if (DEBUG) {
                        System.out.format("\nBest score of %.1f found at %d, %d", bestScore, x, y);
                    }
                }
            }
        }

        if (DEBUG) {
            StringBuilder sb = new StringBuilder();
            sb.append("\n-----\n");
            for (int y = 0; y < fields.length; y++) {
                for (int x = 0; x < fields.length; x++) {
                    sb.append(String.format("%5s", fields[x][y]));
                }
                sb.append("\n");
            }
            for (int y = 0; y < scoringMap.length; y++) {
                for (int x = 0; x < scoringMap.length; x++) {
                    sb.append(String.format("%5.1f", scoringMap[x][y]));
                }
                sb.append("\n");
            }
            System.out.println(sb.toString());
        }

        // If something looks tasty, go for it :^F
        if (bestScore > 0.5) {
            for (Move m : Move.values()) {
                if (m.getXOffset() == bestXY[0] - vision &&
                    m.getYOffset() == bestXY[1] - vision) {
                    if (DEBUG) {
                        System.out.println("Using immediate circumstances.");
                        System.out.println(m);
                    }
                    return m;
                }
            }
        }

        // If nothing looks good, do a lookahead to
        // the south, west, and southwest to guess
        // which is best. 8^[
        //
        // There is potential in recursively applying our
        // vision data with updated score rankings, but
        // that would be hard. :P
        float westScore = 0, southScore = 0, southWestScore = 0;
        for (int y = vision - 1; y < vision + 1; y++) {
            for (int x = 0; x < vision; x++) {
                // +-----------+
                // |           |
                // | # # #     |
                // | # # B     |
                // | # # #     |
                // |           |
                // +-----------+
                westScore += scoringMap[x][y] / (vision - x);
            }
        }
        for (int y = vision; y < fields.length; y++) {
            for (int x = vision - 1; x < vision + 1; x++) {
                // +-----------+
                // |           |
                // |           |
                // |   # B #   |
                // |   # # #   |
                // |   # # #   |
                // +-----------+
                southScore += scoringMap[x][y] / (y - vision);
            }
        }
        for (int y = vision; y < fields.length; y++) {
            for (int x = 0; x < vision; x++) {
                // +-----------+
                // |           |
                // |           |
                // | # # B     |
                // | # # #     |
                // | # # #     |
                // +-----------+
                southWestScore += scoringMap[x][y] / Math.sqrt((y - vision) + (vision - x));
            }
        }
        if (southScore > westScore && southScore > southWestScore) {
            if (DEBUG) {
                System.out.println(Move.SOUTH);
            }
            return Move.SOUTH;
        }
        if (westScore > southScore && westScore > southWestScore) {
            if (DEBUG) {
                System.out.println(Move.WEST);
            }
            return Move.WEST;
        }
        if (DEBUG) {
            System.out.println(Move.SOUTHWEST);
        }
        return Move.SOUTHWEST;
    }

    public boolean wantToFight(int[] enemyAbilities) {

        // Be afraid...
        if (enemyAbilities[STR] > 4) {

            // ...unless you suspect you are being lied to
            if (enemyAbilities[DEF] + enemyAbilities[VIS] > 4 * sumMyAbilities() / 5.) {

                // Enemy has more than expected attribute levels of unhelpful
                // abilities. Assume you're dealing with a clever bastard.
                return true;
            }

            return false;
        }
        return true;
    }

    int sumAbilities(int[] abilities){
        int sum = 0;
        for (int ability : abilities){
            sum += ability;
        }
        return sum;
    }

    int sumMyAbilities(){
        return sumAbilities(new int[]{
            getLifeLvl(),
            getStrengthLvl(),
            getDefenseLvl(),
            getVisionLvl(),
            getClevernessLvl()
        });
    }
}