Question

所以下面我有我的整个代码用于我正在编程的乒乓球游戏，虽然我在y坐标中使用了mouseY

fill ( 255, 10, 20 ); rect(x, mouseY + y, 20, 100); // red pong
fill ( 60, 255, 0 ); rect(paddleX, mouseY + y, 20, 100);  // green pong

它不起作用，我根本找不到我的错误。

此外，我正在努力获得Score（）部分，因为每次我尝试放

if ( ballX = paddleX ) { score = score + 1;}

处理告诉我无法将int转换为Boolean。有人可以告诉我如何重写我的代码所以这个错误不再出现了。我的代码部分的目标是，每当球击中其中一个桨时，我希望计数器增加1。

完整代码：

float ballX = 15, ballY = 15, dX = 15, dY = 15; // variables for the ball
float x = 40, y, score = 0;
float paddleX, paddleY = 0; // variables for the paddles
float mouseY, mouseX;
boolean playing = false, gameover = false, finalscore = false, Score = true;  // game states
boolean keyPressed, key;

void setup() {
    size (1500,1100); // the field is going to be 1500x1100px big
    paddleX = width - 40;
}

void keyPressed () { // the game will only start when a key is pressed
    playing = true; 
}

void draw() {
    background(0); // black background

    if (!playing) { // playing = false

        fill(255); textSize(80); textAlign(CENTER); text("Press Space to Play",width/2, height/4);

    fill (255); ellipse (width/2, height/2, 15, 15); // this is the starting point of the ball
    fill (255,10,20); rect(paddleX/58, (height/2)-50, 20, 100);  // red pong
    fill (60,255,0); rect(paddleX, (height/2)-50, 20, 100);  // green pong 

    }  
    if (playing) { // playing = true

        Score();

        fill ( 0, 255, 0 ); ellipse (ballX, ballY, 15, 15); 

        fill ( 255, 10, 20 ); rect(x, mouseY + y, 20, 100); // red pong
        fill ( 60, 255, 0 ); rect(paddleX, mouseY + y, 20, 100);  // green pong

        if ( ballY > height ) { dY = -dY; } // if the ball reaches the lower wall it will bounce off
        if ( ballY < 0 ) { dY = -dY; } // if the ball reaches the upper wall it will bounce off

        ballX = ballX + dX; ballY = ballY + dY;

        if (ballX > width || ballX < 0 ) { gameover = true;}
    } 

    if (gameover) { // gameover = true
        finalscore = true;

        if (keyPressed) { playing = false; }
        else if (playing) { playing = true; }

        if (finalscore) {  // score = true

            fill(255); textSize(45); textAlign(CENTER); text("Game Over. Press a letter to play again.",width/2, height/4);
            fill(255); textSize(80); textAlign(CENTER); text("You scored " + score + " points" ,width/2, (height/4) * 3);

            if (keyPressed) { playing = true;}
        } 
    } 
}

void Score() {

    fill(255); textSize(45); textAlign(CENTER); text(score,width/2, height/4);

    if (playing) {
        if (paddleX <= ballX){ score = score + 1;}
    }
}

Answer 1

您在草图顶部声明了自己的mouseX和mouseY变量：

float mouseY, mouseX;

不要这样做。处理会自动为您创建mouseX和mouseY个变量。你不自己创建它们。摆脱这一行，以便您使用Processing的mouseX和mouseY变量，而不是您自己的变量。

此外，我正在努力获得Score（）部分，因为每次我尝试放

if ( ballX = paddleX ) { score = score + 1;}

查看if语句。您只使用一个=，这是一项任务。您需要使用两个等于==，或者更好的是<=或>=之类的不等式，因为球击中球拍的精确像素值的几率非常低。

有人能找到我的矩形不跟随鼠标的原因吗？

1 个答案: