Question

我正在尝试为我必须上学的游戏制作原型。但它并不好。我的问题是如何将变量从一个类导入另一个类？我想要playerX和Y变量，所以我可以检查碰撞。这是用Processing（Java）编写的。

如果有更好的检查碰撞的方法，请告诉我:)我的想法。提前谢谢！

我的代码：

主要课程

Player thePlayer = new Player();
Guard theGuard = new Guard();
SpeedPWRUP speedPowerUp = new SpeedPWRUP();

void setup() {
  size(1000, 500);
  theGuard.init();
  thePlayer.init();
  speedPowerUp.init();
}

void updateGame() {
  theGuard.update();
  thePlayer.update();
  speedPowerUp.update();
}

void drawGame() {
  thePlayer.draw();
  theGuard.draw();
  speedPowerUp.draw();
  fill(color(255, 255, 255));
  text("Score:", 10, 20);
}

void draw() {
  background(255);
  fill (0, 0, 0);
  rect(-10, 401, 1100, 100);
  noFill();

  updateGame();
  drawGame();
}

警卫班

class Guard {
  public float guardX, guardY;
  float guardVX, guardVY;
  int fillColor;
  float guardHeight, guardWidth;

void init() {
   guardHeight = 80;
   guardWidth = 40;
   guardX = 300;
   guardY = 400-guardHeight;
   fillColor = color(255,0,0);
}

void update() {
  if (guardX == (random(width)-100)) 
    guardVX = 3;

  if (guardX == (random(width)+100)) 
    guardVX = -3;

  guardX += guardVX;
  guardY += guardVY;
}

void draw() {
  fill(fillColor);
  rect(guardX, guardY, guardWidth, guardHeight);
  noFill();
}
}

玩家类

class Player {
  public float playerX, playerY;
  float vx, vy;
  int fillColor;
  float playerHeight, playerWidth;
  float jumpTime;
  float jumpHeight;
  boolean isJumping;

void init() {
  playerHeight = 80;
  playerWidth = 40;
  fillColor = color(0, 0, 0);
  jumpTime = 200;
  jumpHeight = 100;
  isJumping = false;

  playerX = 100;
  playerY = 400-playerHeight;

  vx = 0;
  vy = 0;
}

void update() {

  if (keyPressed) {
    if (key == 'a' || key == 'A') {
      vx = -2;
    }
  } else {
    vx = 0;
  }

  if (keyPressed) {
    if (key == 'd' || key == 'D') {
      vx = 2;
    }
  } else {
    vx = 0;
  }

  if (keyPressed) {
    if ((key == 'w' || key == 'W') && ( playerY > 400 - jumpHeight)) {
      isJumping = true;
    }
  } else {
    isJumping = false;
  }

  if (playerY < 400 - jumpHeight) {
  }

  if (keyPressed) {
    if (key == 's' || key == 'S') {
      playerHeight = 40;
    }
  } else {
    playerHeight = 80;
  }

  if(isJumping == true) {
    vy = -15;
  } else {
    vy = 0;
  }

  if (playerY < (400-playerHeight)) {
  vy = vy + 2.5;
  }

  playerX += vx;
  playerY += vy;
}

void draw() {
  fill(fillColor);
  rect(playerX, playerY, playerWidth, playerHeight);
  noFill();
}
}

加快上课速度

class SpeedPWRUP {

  float diameter;
  public float pwrUpX, pwrUpY;
  int fillColor;

  void init() {
    diameter = 40;
    pwrUpX = 100;
    pwrUpY = 100;
    fillColor = color(0, 0, 255);
  }

  void update() {
    if (((playerX>pwrUpX) && (playerX < pwrUpX+diameter)) && (playerY > pwrUpY)&&(playerY>pwrUpY+diameter))
        end();
  }

  void draw() {
    fill(fillColor);
    ellipse(pwrUpX, pwrUpY, diameter, diameter);
    noFill();
  }
}

Answer 1

检查碰撞：
您可以在主CLASS中定义静态对象：

/* global static values */
 public static Player thePlayer = new Player();

或球员名单

public static ArrayList<Player> Players = new ArrayList<>();

Answer 2

您可以在Player类中使用Getter函数。例如： public float getPlayerX（）{ 返回playerX; }

如何将变量导入另一个类？

2 个答案: