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<title>瑪奇.防保逆算</title>
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<body onload="calc()">

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function calc()
{

atk = eval(document.cat_Form.atk.value);
dmg1 = eval(document.cat_Form.dmg1.value);
dmg1x = eval(document.cat_Form.dmg1x.value);
dmg2 = eval(document.cat_Form.dmg2.value);
dmg2x = eval(document.cat_Form.dmg2x.value);

ele=0;
PD=1;

//document.cat_Form.dmg1x.value=1;

ref1=0;
ref2=0;
c=0;
x2=0;
y2=0;
tmp1=0;
tmp2=0;

ref.innerHTML="";

ref.innerHTML="交點：<br>";

for(x=0;x<=1000;x++){
for(y=0;y<=100;y++){

//ref1=Math.floor(Math.floor(Math.floor(atk*dmg1x-x)*(100-y)/100)*(ele+9)/9*PD);
//ref2=Math.floor(Math.floor(Math.floor(atk*dmg2x-x)*(100-y)/100)*(ele+9)/9*PD);

ref1=(atk*dmg1x-x)-Math.floor((atk*dmg1x-x)*y/100);
ref2=(atk*dmg2x-x)-Math.floor((atk*dmg2x-x)*y/100);
//扣保後小數進位

if(ref1==dmg1){tmp1++;}//=","+x+"+"+y+","
if(ref2==dmg2){tmp2++;}

if(ref1==dmg1 & ref2==dmg2){ref.innerHTML+="防"+x+"保"+y+"<br>";c++;x2=x;y2=y;}

}//for y
if(ref1==dmg1 & ref2==dmg2){ref.innerHTML+="防"+x+"保"+y+"<br>";c++;x2=x;y2=y;}

if(c>=1 & x>100){break;}//防100以下已找到結果則迴圈終止，否則到1000為止繼續算。已知貝中有500附近。
}//for x

//break;
//ref.innerHTML+=" x: "+ x +" ,y: " + y;

if(c==1 & !ele){

ref.innerHTML+="，1組防保符合。";

//ref.innerHTML+="<br><br>30%所需暴擊率："+y2+"*2+"+30+" ="+(y2*2+30);
//ref.innerHTML+="<br><br>驗算：<br>";

//checking="( "+atk+"*"+dmg1x+" -"+x2+" ) *"+Math.floor(100-y2)/100;//+" *"+(ele+9)+"/9";
//checking="( "+atk+"*"+dmg1x+" -"+x2+" ) -"+Math.floor((atk*dmg1x-x2)*y2/100);//+" *"+(ele+9)+"/9";
//ref.innerHTML+="倍率一傷害"+checking+" ="+Math.floor(eval(checking))+"，符合<br>";

//checking="( "+atk+"*"+dmg2x+" -"+x2+" ) *"+Math.floor(100-y2)/100;//+" *"+(ele+9)+"/9";
//checking="( "+atk+"*"+dmg2x+" -"+x2+" ) -"+Math.floor((atk*dmg2x-x2)*y2/100);//+" *"+(ele+9)+"/9";
//ref.innerHTML+="倍率二傷害"+checking+" ="+Math.floor(eval(checking))+"，符合<br>";

}//if

if(!c){ref.innerHTML+="這組數據找不出防保。";}

show1.innerHTML="，"+tmp1+"組防保符合。";
show2.innerHTML="，"+tmp2+"組防保符合。";



}//function

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<center>
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<tr><td><center>
<font size="3">瑪奇.防保逆算機</font></p>
<p>撰寫 by路過的貓。<a target="_top" href="to_index.htm">回首頁</a></p>
<hr>
<tr><td align=center>計算怪物未知防保，用二組無浮動相異倍率傷，計算交點。<br>

<tr><td align=center><br>
大＝小傷<INPUT size=6 name=atk value="284" onchange=calc()>用減傷裝壓到無浮動。<br>

<tr><td align=center>
倍率一　<INPUT size=6 name=dmg1x value="1" onchange=calc()>
實測傷害<INPUT size=6 name=dmg1 value="249" onchange=calc()><span id=show1></span><br>

倍率二　<INPUT size=6 name=dmg2x value="5" onchange=calc()>
實測傷害<INPUT size=6 name=dmg2 value="1271" onchange=calc()><span id=show2></span><br><br>

<INPUT onclick=calc() type=button value=計算 style="float: center"></p>

<tr><td align=center>
<div id=ref></div></p>

g18s2算出的保改為減傷量(偽保)</p>

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