java - 处理，在类中单击鼠标重绘

Question

我正在尝试通过简单的单击来更改类绘制中的颜色。我尝试打印该声明以查看它是否会重新绘制，但它根本没有重新绘制。点击有效。有谁知道为什么会发生这种情况？这是到目前为止的代码。

Monster firstmonster;
Monster secondmonster;

void setup() {
  size(600,400);
  firstmonster = new Monster(100,200); 
  secondmonster = new Monster(300,200);
  firstmonster.draw();
  secondmonster.draw();
  noLoop();
}

class Monster { 
  float xpos;
  float ypos;
  boolean isAngry;
  int timeAngry;

  Monster(float x, float y) {
    xpos = x;
    ypos = y;
    isAngry = false;
    timeAngry = 0;
  }

  void draw() {
    if(isAngry = true && timeAngry<60){
      print(int(timeAngry));
      timeAngry=timeAngry+1;
      rectMode(CENTER);
      fill(127-timeAngry*5,0,0);
      rect(xpos+100,ypos+100,20,100);
      fill(255,200,200);
      ellipse(xpos+100,ypos+70,60,60);
      ellipse(xpos+81,ypos+70,16,32); 
      ellipse(xpos+119,ypos+70,16,32); 
      line(xpos+90,ypos+150,xpos+80,ypos+160);
      line(xpos+110,ypos+150,xpos+120,ypos+160);
    } else {
      timeAngry = 0;
      rectMode(CENTER);
      print(int(timeAngry));
      fill(127,0,0);
      rect(xpos+100,ypos+100,20,100);
      fill(255,200,200);
      ellipse(xpos+100,ypos+70,60,60);
      ellipse(xpos+81,ypos+70,16,32); 
      ellipse(xpos+119,ypos+70,16,32); 
      line(xpos+90,ypos+150,xpos+80,ypos+160);
      line(xpos+110,ypos+150,xpos+120,ypos+160);

    }
  }
  void mousePressed(){
    poke();
  }
  void poke(){
    isAngry = true;
    print(timeAngry);
    timeAngry=timeAngry+1;
    redraw();
  }
} 

void mousePressed(){
  firstmonster.mousePressed();
}

而且我似乎无法区分这两种模型。如果我放置 firstmonster.poke() 那么第一个和第二个模型颜色都会改变。

Answer 1

您的代码中没有全局 void draw() { .. }，因此 redraw 无法触发。将应作为框架一部分绘制的代码移出 setup()。毫不奇怪，安装程序用于一次性安装代码。

void setup() {
  size(600,400);
  firstmonster = new Monster(100,200); 
  secondmonster = new Monster(300,200);
  noLoop();
}

void draw() {
  firstmonster.draw();
  secondmonster.draw();
}

应该可以解决问题。