51     this.cfg = this.cfg || {};

    51     this.cfg = ai.copyObj(ai.blindWeightRandom.bestCfg);

    52     var left = ai.blindWeightRandom.fixWeight(this.cfg.left);

    52     ai.copyObj(cfg, this.cfg);

    53     var right = ai.blindWeightRandom.fixWeight(this.cfg.right);

    53     var total = this.cfg.left + this.cfg.right + this.cfg.up + this.cfg.down;

    54     var up = ai.blindWeightRandom.fixWeight(this.cfg.up);

    54     this.threshold1 = this.cfg.left/total;

    55     var down = ai.blindWeightRandom.fixWeight(this.cfg.down);

    55     this.threshold2 = (this.cfg.left + this.cfg.down)/total;

    56     var total = left + right + up + down;

    56     this.threshold3 = (this.cfg.left + this.cfg.down + this.cfg.right)/total;

    57     this.threshold1 = left/total;

    57 }

    58     this.threshold2 = (left+down)/total;

    58 ai.blindWeightRandom.bestCfg = {left: 1, down: 10, right: 5, up: 1};

    59     this.threshold3 = (left+down+right)/total;

    60 }

    61 ai.blindWeightRandom.fixWeight = function(val) {

    62     val = val && parseFloat(v) || 1;

    63     if (val <= 0)

    64         val = 1;

    65     return val;

    66 }