修改反向堆栈方法

时间:2014-12-21 15:24:07

标签: java android handler andengine

我的方法存在一个问题,我用它来突出怪物(我只是简单的精灵),但问题是,它并没有突出显示每个怪物,只有最后一个添加。

这是突出显示的方法:

public void highlightMonsters(){
    while (mStack.size()!=0){
        if (mStack.peek().toString().equals("1")) {
            monsterTopLeft.setVisible(!visibility);
            monsterTopLeftColored.setVisible(visibility);
            monsterTopLeftColored.registerUpdateHandler(changeColorsMonster1);
            mReverseStack.push(mStack.pop());
            monsterTopLeft.registerUpdateHandler(cakaj);
        }
        else if(mStack.peek().toString().equals("2")) {
            monsterTopRight.setVisible(!visibility);
            monsterTopRightColored.setVisible(visibility);
            monsterTopRightColored.registerUpdateHandler(changeColorsMonster2);
            mReverseStack.push(mStack.pop());
            monsterTopRight.registerUpdateHandler(cakaj);
        }
        else if(mStack.peek().toString().equals("3")) {
            monsterBottomLeft.setVisible(!visibility);
            monsterBottomLeftColored.setVisible(visibility);
            monsterBottomLeftColored.registerUpdateHandler(changeColorsMonster3);
            mReverseStack.push(mStack.pop());
            monsterBottomLeft.registerUpdateHandler(cakaj);
        }
        else if (mStack.peek().toString().equals("4")){
            monsterBottomRight.setVisible(!visibility);
            monsterBottomRightColored.setVisible(visibility);
            monsterBottomRightColored.registerUpdateHandler(changeColorsMonster4);
            mReverseStack.push(mStack.pop());
            monsterBottomRight.registerUpdateHandler(cakaj);
        }
    }
}

这是主循环

public void mainLoop() {

    cislo = generateNumber();
    testText.setText(String.valueOf(cislo));
    mReverseStack.push(new Integer(cislo)); //debugging purposes
    //cisla su v mReverseStack
    reverseNumbersInStack2();
    //prehodime do mStack
    highlightMonsters();
    //vysvietime a zaroven prehodime do mReverseStack
    reverseNumbersInStack2();
    //prehodime do mStack
}

2 个答案:

答案 0 :(得分:0)

如果您希望while()周期减少堆叠,请使用pop()代替peek()

答案 1 :(得分:0)

我不确定您的代码是否适合您的目的,但如果您希望代码能够正常工作,那么您就不会偷看,而是会弹出。每次循环一次 - 如果你没有覆盖一个数字,那么在if语句中执行它可能会导致无限循环。如果代码的其他部分没有错误,那么这样的事情应该有效:

public void highlightMonsters(){
    while (mStack.size()!=0){ 
      String monsterString = mStack.pop().toString();
        switch(monsterString) 
case "1" : {
            monsterTopLeft.setVisible(!visibility);
            monsterTopLeftColored.setVisible(visibility);
            monsterTopLeftColored.registerUpdateHandler(changeColorsMonster1);
            monsterTopLeft.registerUpdateHandler(cakaj);
            break;
        }
case "2" :  {
            monsterTopRight.setVisible(!visibility);
            monsterTopRightColored.setVisible(visibility);
            monsterTopRightColored.registerUpdateHandler(changeColorsMonster2);
            monsterTopRight.registerUpdateHandler(cakaj);
            break;
        }
case "3" :  {
            monsterBottomLeft.setVisible(!visibility);
            monsterBottomLeftColored.setVisible(visibility);
            monsterBottomLeftColored.registerUpdateHandler(changeColorsMonster3);
            monsterBottomLeft.registerUpdateHandler(cakaj);
            break;
        }
case "4" : (mStack.peek().toString().equals("4")){
            monsterBottomRight.setVisible(!visibility);
            monsterBottomRightColored.setVisible(visibility);
            monsterBottomRightColored.registerUpdateHandler(changeColorsMonster4);
            monsterBottomRight.registerUpdateHandler(cakaj);
            break;
        }
default : break;
    }  
  mReverseStack.push(monsterString);
  } 
}

但是,我真的建议不要使用这种代码。你应该尝试在堆栈而不是数字上推动你自己的怪物,并使changeColors-Stuff更加通用的参数。或者,至少将if或case语句中的一些代码放入单独的方法中。上面代码中的这种冗余不是很好的编码风格,你迟早会遇到问题。