javascript - 如何在初始功能之前将一个变量重置为原始值？

Question

我正在编写一个“选择你自己的冒险”脚本，其中玩家与妖精战斗，直到他们的生命值(var hp)之一达到 0 或更少。如果一轮攻击后(玩家攻击一次，妖精攻击一次)双方的生命值都没有达到 0 或更少，则脚本调用一个函数来重复原始一轮攻击(但这次妖精和玩家都减少了hp 和 def 值)。当然，该函数会继续循环，直到玩家或妖精的生命值达到 0 或更低。我的问题出现在我如何计算玩家或妖精每轮受到的伤害上。两者都有一个 atk 变量，它从对手的 def 变量中减去，如果 def 变量小于 0，那么 def 变量的绝对值就是从妖精或玩家的 HP 中减去多少(取决于谁攻击了谁) )。当函数循环时，没有任何变量重置。这对除 def 之外的每个变量都有好处，我需要每轮重置它。

我的问题是:在玩家在装甲开关中做出选择后(如下)，如何将每轮的 def 变量重置为正确的值？我需要它发生在 FightLoop() 函数之前，但不是在 vararmor 提示之前。

这是代码:

   function getRandomAtk(min,max) {
         return Math.random() *(max-min) + min;
}

//player stats
var player= {
    atk: 1,
    def: 1,
    hp: 10,
    mp: 0,
    block: 1,
    ltn: 0,
    fire: 0, 
    magic: 0,
    ltnDef: 0,
    fireDef:0,
    magDef:0
}
//goblin stats
 var goblin= {
    atk: Math.floor(getRandomAtk(3,6)),
    def: 1,
    hp: 5,
    mp: 0,
    block: 1,
    magDef: 0,
    ltnDef: 0,
    fireDef:0
}
//variable increments
f=0;
g=0;
h=0;
i=0;
j=0;
ff=0;
gg=0;



while(i<=0){
 var begin= prompt("Pick your weapon: sword, staff, or shield").toLowerCase();
 switch(begin) {
         case "sword":
         console.log("You chose the sword. Your Attack is increased by 5. Block is increased by 2");
         player.atk += 5;
         player.block += 2;
         i++;
         break;

     case "staff":
     console.log("You chose the staff. Your Magic is increased by 5. Your MP is increased by 10. You obtained Spell Attack!");
     player.magic += 5;
     player.mp+= 10;
     i++;
     //Spell Attack acquired
     break;


     case "shield":
     console.log("You chose the shield. Your Attack is increased by 2. Your Block is increased by 5");
         player.atk += 2;
         player.block += 5;
         i++;
         break;

    case "stats":
    console.log("Your Stats");
    console.log("Attack=" + " " + player.atk + " " + "Defense=" + "1"+ " "+ "HP=" + " " + player.hp+ " " + "MP=" + " " + player.mp+ " " +"Block=" + " " + player.block + " " +"Lightning Atk="  + " " + player.ltn + " " + "Fire Atk="+ " " + player.fire + " "+ "Magic Atk=" + " " + player.magic + " " + "Lightning Def="+ " " + player.ltnDef + " "+ "Fire Def=" + " " + player.fireDef + " " + "Magic Def=" + " " + player.magDef);
    continue;

    default:
     console.log("You must make a choice");
     continue;




}
}

 if(begin == "sword") {
 while (f<=0) {
     var sacrifice= prompt("Which weapon do you choose to sacrifice?").toLowerCase();
     switch(sacrifice) {
        case "sword":
        console.log("You cannot do that.");
        break;



        case "staff":
        console.log("You give up the staff. Your Block is increased by 2");
        player.block += 2;
        f++;
        break;

        case "shield":
        console.log("You give up the shield. Your Magic Attack is increased by 2. Your MP is increased by 2");
        player.magic += 2;
        player.mp+= 3;
        f++;
        break;

        case "stats":
        console.log("Your Stats");
        console.log("Attack=" + " " + player.atk + " " + "Defense=" + " " + player.def + " "+ "HP=" + " " + player.hp+ " " + "MP=" + " " + player.mp+ " " +"Block=" + " " + player.block + " " +"Lightning Atk="  + " " + player.ltn + " " + "Fire Atk="+ " " + player.fire + " "+ "Magic Atk=" + " " + player.magic + " " + "Lightning Def="+ " " + player.ltnDef + " "+ "Fire Def=" + " " + player.fireDef + " " + "Magic Def=" + " " + player.magDef);
        continue;

        default:
        console.log("You must make a choice");
        continue;

    }
}
}

else if(begin=="shield") {
    while(g<=0) {
    var sacrifice2= prompt("Which weapon do you choose to sacrifice?").toLowerCase();
    switch(sacrifice2) {
        case "sword":
        console.log("You give up the sword. Your Magic Attack is increased by 2. Your MP is increased by 2");
        player.magic +=2;
        player.mp+= 3;
        g++;
        break;

        case "staff":
        console.log("You give up the staff. Your Attack is increased by 2. Your Block is increased by 1");
        player.atk += 2;
        player.block +=1;
        g++;
        break;

        case "shield":
        console.log("You cannot do that");
        continue;

    case "stats":
        console.log("Your Stats");
        console.log("Attack=" + " " + player.atk + " " + "Defense="+ " " + "1" +" "+ "HP=" + " " + player.hp+ " " + "MP=" + " " + player.mp+ " " +"Block=" + " " + player.block + " " +"Lightning Atk="  + " " + player.ltn + " " + "Fire Atk="+ " " + player.fire + " "+ "Magic Atk=" + " " + player.magic + " " + "Lightning Def="+ " " + player.ltnDef + " "+ "Fire Def=" + " " + player.fireDef + " " + "Magic Def=" + " " + player.magDef);
        continue;

        default:
        console.log("You must make a choice");
        continue;

    }
}
}

 else if(begin == "staff") {
    while(h<=0) {
    var sacrifice3= prompt("Which weapon do you choose to sacrifice?").toLowerCase();
    switch(sacrifice3) {
        case "sword":
        console.log("You give up the sword. Your Block is increased by 2");
        player.block +=2;
        h++;
        break;

        case "staff":
        console.log("You cannot do that.");
        continue;


         case "shield":
         console.log("You give up the shield. Your Attack is increased by 2. Your Block is increased by 1");
         player.atk +=2;
         player.block +=1;
         h++;
         break;

         case "stats":
         console.log("Your Stats");
         console.log("Attack=" + " " + player.atk + " " + "Defense=" + " " + "1" + " "+ "HP=" + " " + player.hp+ " " + "MP=" + " " + player.mp+ " " +"Block=" + " " + player.block + " " +"Lightning Atk="  + " " + player.ltn + " " + "Fire Atk="+ " " + player.fire + " "+ "Magic Atk=" + " " + player.magic + " " + "Lightning Def="+ " " + player.ltnDef + " "+ "Fire Def=" + " " + player.fireDef + " " + "Magic Def=" + " " + player.magDef);
        continue;

        default:
        console.log("You must make a choice");
        continue;

    }
}
}

 while(j<=0){

var armor= prompt("Which armor set do you choose? Magic Robe('robe') or Leather Plate? ('plate')").toLowerCase();
switch(armor) {
    case "robe":
    console.log("You choose the Magic Robe. Your Magic Defense goes up by 3.");
    player.magDef+=3;
    j++;
    break;

    case "plate":
    console.log("You choose the Leather Plate. Your Defense goes up by 3.");
    player.def+=3;
    j++;
    break;

     case "stats":
     console.log("Your stats");
     console.log("Attack=" + " " + player.atk + " " + "Defense=" + " " + player.def + " "+ "HP=" + " " + player.hp+ " " + "MP=" + " " + player.mp+ " " +"Block=" + " " + player.block + " " +"Lightning Atk="  + " " + player.ltn + " " + "Fire Atk="+ " " + player.fire + " "+ "Magic Atk=" + " " + player.magic + " " + "Lightning Def="+ " " + player.ltnDef + " "+ "Fire Def=" + " " + player.fireDef + " " + "Magic Def=" + " " + player.magDef);
     continue;

     default:
     console.log("You must make a choice.");
     continue;
 }
 }





 var fight= alert("A goblin attacks you!");

 fightLoop();

 function fightLoop() {
 while(ff<=0) {
  var fight2= prompt("What do you do? 'Attack' or 'Block'? or 'Spell      Attack(spell)'?").toLowerCase();
 switch(fight2) {
    case "attack":
     console.log("You Attack the goblin!");
     goblin.def-=player.atk;

     if(goblin.def<0) {
         goblin.hp-=Math.abs(goblin.def);
         console.log("You dealt"+ " " + Math.abs(goblin.def) + " "+ "damage!");
        if(goblin.hp<=0) {
            console.log("The goblin is slain!");
            ff++;
             gg++;
         }

         else if(goblin.hp>=0) {
            ff++;
        }
    }

     else {
         console.log("You did 0 damage!");
     ff++;
     }
     break;

    case "spell":
     if(begin=="staff"){
         console.log("You cast a Spell Attack!");
         goblin.magDef-=player.magic;

         if(goblin.magDef<0) {
             goblin.hp-= Math.abs(goblin.magDef);
             console.log("You dealt" + " " + Math.abs(goblin.magDef) + " " + "damage!");
            if(goblin.hp<=0) {
                console.log("The goblin is slain!");
                ff++;
                gg++;
            }

            else {
                ff++;
            }
        }

        else {
            console.log("You did 0 damage!");
            f++;
        }
}

     else {
         console.log("You cannot use magic.")
     }
    continue;

    case "block":
    console.log("You choose to Block the goblin's next Attack!");
    ff++;
    break;

     case "stats":
     console.log("Your Stats");
     console.log("Attack=" + " " + player.atk + " " + "Defense=" + " " + player.def + " "+ "HP=" + " " + player.hp+ " " + "MP=" + " " + player.mp+ " " +"Block=" + " " + player.block + " " +"Lightning Atk="  + " " + player.ltn + " " + "Fire Atk="+ " " + player.fire + " "+ "Magic Atk=" + " " + player.magic + " " + "Lightning Def="+ " " + player.ltnDef + " "+ "Fire Def=" + " " + player.fireDef + " " + "Magic Def=" + " " + player.magDef);
    continue;

    case "goblin stats":
    console.log("Goblin Stats");
    console.log("Attack=" + " " + goblin.atk+ " " + "Defense="+ " "+ goblin.def+ " "+ "HP="+ " "+ goblin.hp+ " "+ "MP="+ " "+ goblin.mp+ " " + "Block"+ " "+ goblin.block+ " "+ "Magic Defense"+ " "+ goblin.magDef)
    continue;

    default:
    console.log("You must make a choice.");
     continue;
}
}

if (gg>0) {
    console.log("You won the game! Congratulations!")
}

else {
var retaliate= alert("The Goblin Attacks you!");

if (fight2== "block") {
    player.def+=player.block;
    player.def-= goblin.atk;
        if(player.def<0) {
            console.log("You blocked the Attack!");
            player.hp-=Math.abs(player.def);
            console.log("The Goblin did"+ " "+ Math.abs(player.def)+ " "+ "Damage!");

            if(player.hp<=0) {
                console.log("The Goblin defeated you! You died.");
                console.log("Game Over.");


            }


        }


        else {
            console.log("The goblin did 0 damage!");
        }
}

else {
    player.def-=goblin.atk;
        if(player.def<0) {
            player.hp-=Math.abs(player.def);
            console.log("The Goblin did"+ " "+ Math.abs(player.def)+ " "+ "Damage!");
                if(player.hp<=0) {
                    console.log("The Goblin defeated you! You died");
                    console.log("Game Over.");

                }


        }
        else {
            console.log("The Goblin did 0 damage!");
        }
}
}
}

if (goblin.hp>=0) {
    ff-=1;
    fightLoop();

}

Answer 1

向玩家“类别”添加变量以表示每个统计数据的最大值:

var player= {
  def: 1,
  max_def: 10,
  hp: 10,
  max_hp: 10,
  ...
}

如果您需要在遭遇中重置某些内容，请将当前值设置回最大值:

player.def = player.max_def;