类未在处理IDE中调用

Question

final color RED = color(255,0,0);
final color BLUE = color(0,0,255);

motorbike bike1;
motorbike bike2;

class motorbike
{
int x = 5;
//members
int y;
int speed=2;
int size=30;
color colour;

void render()
{
  float wheelHeight = size/3;
  fill(colour);
  triangle(x,y,x+size,y,x+size/2,y-size/2);
  //built-in triangle routine
  drawWheel(x,y,wheelHeight);
  drawWheel(x+size,y,wheelHeight);
}

void drawWheel( int x, int y,float size)
{
  float inner = size*2/3;
  fill(0);
  ellipse(x,y,size,size);
  fill(255);
  ellipse(x,y,inner,inner);
}

void move() 
{
  speed= (int)random(5.0);
  //a random step [0..5]
  x=x+speed;
}
void update()  {
  move();
  render();
}

motorbike(int y,color col){
  //constructor
  this.y=y;
  this.speed= (int)random(5.0);
  this.colour=col;
}


//endof class description
}

void setup()
{
  size(500,100);
  bike1 = new motorbike(RED,30);
  bike2 = new motorbike(BLUE,60);
  print("Come on");
}

void draw()
{
  background(125);
}

抱歉，真的愚蠢的问题，但这应该是调用，我不知道为什么它没有绘制对象。

Answer 1

您的构造函数有参数(int，color)。

motorbike(int y,color col)

您以错误的顺序（颜色、int）传递参数

bike1 = new motorbike(RED,30);

您还必须从最近创建的对象Bike1调用函数。

bike1.render();