Drools 3.1M1真的不错 回合制游戏开发原来并不难

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     前几天在论坛讨论了Drools后，说到了Drools的问题，根据DaDa老兄的描述，找到了Drools 3.1M1，发现From Collect真的不错。已经试着成功集成到公司开发框架中（现在可以不重新编辑，只是改改文本文件就达到调整Control层的效果），昨晚突发奇想，试着花了几个小时用Drools写了一个Tank自动对打游戏，感觉还不错。打算后续完善一下，集成同事推荐的robocode玩玩。   相信Drools3.2正式版出来以后，用这个搞开发真的会很流行

   Copy一段昨晚Rule上来抛砖引玉，帮助想了解M1却不想看E文的朋友。

  规则代码

package warrule

import warunit.Tank;
import work.Hit;
import work.Exp;
import work.Order;
import java.util.ArrayList;

rule "destroy"
  salience 1000
  when
    tk:Tank(life <= 0 , $id:id)
    ht:Hit(to == $id ,$s:soruce)
    xp:Exp(status ==0)
  then
    System.out.println("Tank:"+ $id +" 被"+ $s +"击毁!");
    xp.setCt(1);
    xp.setId($s);
    xp.setStatus(1);
    retract(tk);
    modify(xp);
 end

rule "get exp"
  salience 950
  when
     xp:Exp(status == 1,$id:id,$ct:ct)
     tk:Tank(id==$id,$xp:exp)
  then
     xp.setStatus(0);
     modify(xp);
     int nxp =$xp + $ct;
     tk.setExp(nxp);
     modify(tk);
     System.out.println("Tank:"+ $id +" 击毁Tank，获取经验:1,现有经验:"+ nxp);
 end

rule "hit by enemy"
 salience 900
 when
     ht:Hit(status ==1,$t:to,$ht:hit)
     tk:Tank(id == $t,$lf:life)
 then
     int rm = $lf - $ht;
    // System.out.println(" 剩余生命:" + rm);
     ht.setStatus(0);
     tk.setLife(rm);
     modify(tk);
     modify(ht);
end



rule "hit enemy right"
 salience 800
 when
    ht:Hit(status ==0 )
    $tk:Tank(run >0 , $x:x,$y:y,$id:id,$t:team,$r:run,$ht:hit)
    li:ArrayList(size >0) from collect( Tank(x ==($x+1),y==$y,team != $t))
 then
    Tank tk1 = (Tank)li.get(0);
    System.out.print("Tank:"+ $id +" 打击右侧敌人:" + tk1.getId() );
    ht.setSoruce($id);
    ht.setTo(tk1.getId());
    ht.setHit($ht);
    ht.setStatus(1);
    $tk.setRun($r-1);
    modify($tk);
    modify(ht);
end



rule "hit enemy left"
 salience 800
 when
    ht:Hit(status ==0 )
    $tk:Tank(run >0 , $x:x,$y:y,$id:id,$t:team,$r:run,$ht:hit)
    li:ArrayList(size >0) from collect( Tank(x ==($x-1),y==$y,team != $t))
 then
    Tank tk1 = (Tank)li.get(0);
    System.out.print("Tank:"+ $id +" 打击左侧敌人:" + tk1.getId() );
    ht.setSoruce($id);
    ht.setTo(tk1.getId());
    ht.setHit($ht);
    ht.setStatus(1);
    $tk.setRun($r-1);
    modify($tk);
    modify(ht);
end


rule "hit enemy down"
 salience 800
 when
    ht:Hit(status ==0 )
    $tk:Tank(run >0 , $x:x,$y:y,$id:id,$t:team,$r:run,$ht:hit)
    li:ArrayList(size >0) from collect( Tank(x ==$x,y==($y+1),team != $t))
 then
    Tank tk1 = (Tank)li.get(0);
    System.out.print("Tank:"+ $id +" 打击下侧敌人:" + tk1.getId() );
    ht.setSoruce($id);
    ht.setTo(tk1.getId());
    ht.setHit($ht);
    ht.setStatus(1);
    $tk.setRun($r-1);
    modify($tk);
    modify(ht);
end

rule "hit enemy up"
 salience 800
 when
    ht:Hit(status ==0 )
    $tk:Tank(run >0 , $x:x,$y:y,$id:id,$t:team,$r:run,$ht:hit)
    li:ArrayList(size >0) from collect( Tank(x ==$x,y==($y-1),team != $t))
 then
    Tank tk1 = (Tank)li.get(0);
    System.out.print("Tank:"+ $id +" 打击上侧敌人:" + tk1.getId() );
    ht.setSoruce($id);
    ht.setTo(tk1.getId());
    ht.setHit($ht);
    ht.setStatus(1);
    $tk.setRun($r-1);
    modify($tk);
    modify(ht);
end

rule "goRight"
    salience 100
    when
    od:Order(status ==1,px:px,py:py);
        tk:Tank(x < px, run > 0,$x:x,$y:y,$r:run,$id:id )
        ArrayList(size == 0) from collect( Tank(x ==($x+1),y==$y))
    then
        int $nx = $x +1;
        //System.out.println("Tank:["+ $id +"]向右移动: ["+ $x +","+ $y +"] => ["+ $nx +","+ $y +"]" );
        tk.setX($nx);
        tk.setRun($r-1);
        modify(tk);
end

rule "goRightDown"
    salience 150
    when
    od:Order(status ==1,px:px,py:py);
        tk:Tank(x < px, y < py, run > 0,$x:x,$y:y,$r:run,$id:id )
        ArrayList(size == 0) from collect( Tank(x ==($x+1),y==($y+1)))
    then
        int $nx = $x +1;
        int $ny = $y +1;
        //System.out.println("Tank:["+ $id +"]向右下移动: ["+ $x +","+ $y +"] => ["+ $nx +","+ $y +"]" );
        tk.setX($nx);
        tk.setY($ny);
        tk.setRun($r-1);
        modify(tk);
end

rule "goLeftDown"
    salience 150
    when
        od:Order(status ==1,px:px,py:py);
        tk:Tank(x >  px, y < py, run > 0,$x:x,$y:y,$r:run,$id:id )
        ArrayList(size == 0) from collect( Tank(x ==($x-1),y==($y+1)))
    then
        int $nx = $x -1;
        int $ny = $y +1;
        //System.out.println("Tank:["+ $id +"]向右下移动: ["+ $x +","+ $y +"] => ["+ $nx +","+ $y +"]" );
        tk.setX($nx);
        tk.setY($ny);
        tk.setRun($r-1);
        modify(tk);
end

rule "goLeftUp"
    salience 150
    when
        od:Order(status ==1,px:px,py:py);
        tk:Tank(x >  px, y > py, run > 0,$x:x,$y:y,$r:run,$id:id )
        ArrayList(size == 0) from collect( Tank(x ==($x-1),y==($y-1)))
    then
        int $nx = $x -1;
        int $ny = $y -1;
        //System.out.println("Tank:["+ $id +"]向右下移动: ["+ $x +","+ $y +"] => ["+ $nx +","+ $y +"]" );
        tk.setX($nx);
        tk.setY($ny);
        tk.setRun($r-1);
        modify(tk);
end

rule "goRightUp"
    salience 150
    when
    od:Order(status ==1,px:px,py:py);
        tk:Tank(x < px, y > py, run > 0,$x:x,$y:y,$r:run,$id:id )
        ArrayList(size == 0) from collect( Tank(x ==($x+1),y==($y-1)))
    then
        int $nx = $x + 1;
        int $ny = $y - 1;
        //System.out.println("Tank:["+ $id +"]向右移动: ["+ $x +","+ $y +"] => ["+ $nx +","+ $y +"]" );
        tk.setX($nx);
        tk.setY($ny);
        tk.setRun($r-1);
        modify(tk);
end


rule "goLeft"
    salience 100
    when
        od:Order(status ==1,px:px,py:py);
        tk:Tank(x > px , run > 0,$x:x,$y:y,$r:run,$id:id )
        ArrayList(size == 0) from collect( Tank(x == ($x-1),y==$y))
    then
        int $nx = $x - 1;
        //System.out.println("Tank:["+ $id +"]向右移动: ["+ $x +","+ $y +"] => ["+ $nx +","+ $y +"]" );
        tk.setX($nx);
        tk.setRun($r-1);
        modify(tk);
end


rule "goDown"
    salience 100
    activation-group "down"
    when
        od:Order(status ==1,px:px,py:py);
        tk:Tank(y < py, run > 0,$x:x,$y:y,$r:run,$id:id )
        ArrayList(size == 0) from collect( Tank(x == $x,y== ($y+1) ))
    then
        int $ny = $y +1;
        //System.out.println("Tank:["+ $id +"]向下移动: ["+ $x +","+ $y +"] => ["+ $x +","+ $ny +"]");
        tk.setY($ny);
        tk.setRun($r-1);
        modify(tk);
end

rule "goDownTarget"
    salience 200
    activation-group "down"
    when
        od:Order(status ==0,tm:team,px:px,py:py);
        tk:Tank(team ==tm, y < py, run > 0,$x:x,$y:y,$r:run,$id:id )
        ArrayList(size == 0) from collect( Tank(x == $x,y== ($y+1) ))
    then
        int $ny = $y +1;
        //System.out.println("Tank:["+ $id +"]向下移动: ["+ $x +","+ $y +"] => ["+ $x +","+ $ny +"]");
        tk.setY($ny);
        tk.setRun($r-1);
        modify(tk);
end

rule "goUp"
    salience 100
    when
    od:Order(status ==1,px:px,py:py);
        tk:Tank(y > py, run > 0,$x:x,$y:y,$r:run,$id:id )
        ArrayList(size == 0) from collect( Tank(x == $x,y== ($y-1)))
    then
        int $ny = $y - 1;
        //System.out.println("Tank:["+ $id +"]向上移动: ["+ $x +","+ $y +"] => ["+ $x +","+ $ny +"]");
        tk.setY($ny);
        tk.setRun($r-1);
        modify(tk);
end

rule "atTarget"
    salience 0
    when
    od:Order(status ==1,px:px,py:py);
        tk:Tank(x == px, y==py,$x:x,$y:y,$r:run,$id:id)
    then
        System.out.println("Tank:["+ $id +"]到达中心["+ $x +","+ $y +"],剩余:"+ $r);
end