Problems with scope of variables.

Programming Questions

totaldork..

Problems with scope of variables.

in Programming Questions • 2 years ago

I have a class called Bubble. I want to replace "i" in the "for" statement in my draw function with bubble size. Also I don't know what is supposed to be in the pair of parentheses in "Bubble myBubble = new Bubble();". As you can tell I don't really know anything: help!

class Bubble{
float bubbleSize;
float centerX;
float centerY;
float cornerX = bubbleSize + centerX;
float cornerY = bubbleSize + centerY;
Bubble(){
this.bubbleSize = bubbleSize;
this.centerX = centerX;
this.centerY = centerY;
this.cornerX = cornerX;
this.cornerY = cornerY;
// for(bubbleSize=0;bubbleSize<60;bubbleSize++){
ellipse(centerX,centerY,cornerX,cornerY);
// }
fill(255,150,150);
}
}
void setup(){
size(400,400);
ellipseMode(CENTER);
}
void draw(){
for(int i=0;i<10;i++;){
Bubble myBubble = new Bubble();
}
}

Replies(6)

PhiLho

Re: Problems with scope of variables.

2 years ago

Your statement is a bit obscure, but perhaps you mean to replace the 10 value by the size of an array of Bubble objects.
And you should not use the class like a function, so you should separate the drawing code from the constructor.
Which should have the parameters matching the fields you set there.

totaldork..

Re: Re: Problems with scope of variables.

2 years ago

What does the stuff inside the parenthesis in tfguy44's code do?

I get an error now with my updated code that says "Cannot make a static reference to the non static method makeBubble() from the type BubbleGameOOP.Bubble", what does that mean?

class Bubble{
//Radius of Bubble
//Coordinates for Bubble
float centerX;
float centerY;
float cornerX;
float cornerY;
float bubbleR = dist(centerX,centerY,cornerX,cornerY);
//Constructor
Bubble(){
this.bubbleR = bubbleR;
this.centerX = centerX;
this.centerY = centerY;
this.cornerX = cornerX;
this.cornerY = cornerY;
//Call makeBubble method
Bubble.makeBubble();
}
//"makeBubble" method actually draws the circle
void makeBubble(){
//Circle for Bubble
ellipse(centerX,centerY,cornerX,cornerY);
//Insides of Bubble
fill(255,150,150);
}
}
void setup(){
//Screen size
size(400,400);
//Setting ellipse mode to center
ellipseMode(CENTER);
}
void draw(){
//Making bubble for a test, later will
//make them grow and stuff repeatedly
Bubble myBubble = new Bubble();
}

totaldork..

Re: Re: Problems with scope of variables.

2 years ago

Oh, I fixed it! I got rid of the "Bubble" before "Bubble.makeBubble". Still doesn't DO anything yet. And how do I assign specific coordinates to each bubble I make?

tfguy44

Re: Problems with scope of variables.

2 years ago

class Bubble{

float centerX;

float centerY;

float bubbleSize;

Bubble(float in_centerX, float in_centerY, float in_bubbleSize){

centerX = in_centerX;

centerY = in_centerY;

bubbleSize = in_bubbleSize;

}

void draw(){

pushStyle();

fill(255,150,150);

noStroke();

ellipseMode(CENTER);

ellipse(centerX,centerY,bubbleSize,bubbleSize);

popStyle();

}

Bubble[] bubs = new Bubble[10];

void setup(){

size(400,400);

for(int i=0; i<bubs.length; i++){

bubs[i] = new Bubble(10 + 35*i, 10 + 35*i, 5 + 5*i );

}

void draw(){

background(0);

for(int i=0; i<bubs.length; i++){

bubs[i].draw();

}

totaldork..

Re: Re: Problems with scope of variables.

2 years ago

Can I have some explanation, por favor?

PhiLho

Re: Problems with scope of variables.

2 years ago

See Getting Started, Objects tutorial, and Reference... Don't hesitate to ask more specific questions.

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