Question

这个处理基本游戏我一直在努力，我不断得到这个＆＃34;期待EOF，发现＆＃39; YoshiXDX＆＃39;＆＃34;错误。有人能在我的代码中发现错误吗？我对这整个处理过程都很陌生，我知道我应该把所有变量放在第一位，这样他们才能进入绘图和设置的范围，但我想我一定是搞砸了。

Many thanks,

/* @pjs preload="peach-castle.jpg","Yoshi.png","Fireball.png"; */


int FireballX, FireballY;
int YoshiX, YoshiY;
int YoshiXdX, YoshiYdY;
YoshiXdX= 5;
YoshiYdY = 5;
int FireballXdX, FireballYdY;
FireballXDX = 8; 
FireballYdY = 8;
Pimage Fireball, background, Yoshi; 
int randompos;
float timeStarted;
int FireballPoints, YoshiPoints;
FireballPoints = 0;
YoshiPoints = 0;
boolean spawn1 = true;
float distance = dist(FireballX, FireballY, YoshiX, YoshiY);



    void setup()
{
  size(500, 500);
  noCursor();
  background(0);
  timeStarted = millis();
  Fireball = loadImage("Fireball.png");
  Yoshi = loadImage("Yoshi.png");
  background = loadImage("peach-castle.jpg");
  imageMode(CENTER);
  //image(background, 0, 0, width, height);
}



    void draw()
{

  long currentTime = millis();
  long elapsedTime = (currentTime - timeStarted)/1000;
  text("# of Yoshi's points: " YoshiPoints, 20, 15);
  text("# of Fireball's points: " FireballPoints, 20, 30);
  text("Time played: "+ elapsedTime, 20, 45);

  if (spawn1 == true){
   Respawn();
   image(Fireball, FireballX, FireballY);
   image(Yoshi, YoshiX, YoshiY); 
   spawn1 == false;}

  Main();
}

void Wrapcheck() {  

  if (FireballX> width) {
    FireballX = FireballX - width;
  } 
  if (FireballX < 0 ) {
    FireballX = height+ FireballX ;
  } 
  if (FireballY > height) {
    FireballY = FireballY - height;
  }
  if (FireballY < 0 ) {
    FireballY = height - FireballY;
  }
}

void Yoshimoves() {
  if ((FireballX - YoshiX)> 0) {
    YoshiX -= YoshiXdX;
  } else if ((FireballX - YoshiX)<0) {
    YoshiX += YoshiXdX;
  } else if ((FireballY - YoshiY)>0) {
    YoshiY += YoshiYdY;
  } else if ((FireballY - YoshiY)<0) {
    YoshiY -= YoshiYdY;
  }
}

void keyPressed()
{
  if (key == 'w') {
    FireballY += FireballYdY;
  }
  if (key == 's') {
    FireballY -= FireballYdY;
  }
  if (key == 'd') {
    FireballX += FireballXdX
  }
  if (key == 'a') {
    FireballX -= FireballXdX
  }

  Yoshimoves();
}

void collision() {

  if (distance <= 50) {
    FireballPoints ++;
    Respawn();
  }
}

void Yoshicheck() {
  if ((YoshiX> width) || (YoshiX>0) || (YoshiY>height) || (YoshiY<0)) {
    YoshiPoints++;
    Respawn();
  }
}


void Respawn() {

  randompos = random(0, 3);
  if (randompos == 0) {
    FireballX, FireballY = width/2, 25;
  } else if (randompos == 1) {
    FireballX, FireballY = width-25, height/2
  } else if (randompos == 2) {
    FireballX, FireballY = width/2, height-25;
  } else if (randompos == 3) {
    FireballX, FireballY = 25, height/2
  } 
  YoshiX, YoshiY = width/2, height/2;
}

void Main() {

  Wrapcheck();
  collision();
  Yoshicheck();
}

Answer 1

假设您正在编写Java代码，您是否在“类”中定义了所有这些？

Answer 2

靠近顶部的线

YoshiXdX = 5;

是错误的来源。这声明YoshiXdX没有类型，而是需要

int YoshiXdX = 5;

声明中有多个缺少类型的实例。如果你只修复了这一行，那么下一行就会给你带来同样的错误。正如bcsb1001所示，这些都需要修复才能尝试运行它。并且所有的线都没有结束;也需要修理。字节码编译器不知道如何处理具有这些语法错误的行。

在processing.org上的前几个教程解释了这些内容，或者在任何开始的Java站点/书籍中都要花很多钱。无论使用何种语言，在每一行上获得正确的语法都是让代码工作的第一步。 Processing使用简化的Java，但不是那么简单。不幸的是，Processing IDE非常简单，在这方面不是很有帮助。像Eclipse一样真正的IDE会在你输入它们时立即警告你这些错误......

使用处理并获取此错误

2 个答案: