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Programming Questions

cped01

in Programming Questions • 2 years ago

im tying to get it so that it takes progressively more and more clicks to return the circle to zero.

float radius;
int timespressed;

void setup()
{
size(300,300);
radius = 10;
radius ++;
smooth();

}

void draw ()
{
background(0);
// println(radius);
ellipse (150,150, radius ,radius);
int timespressed = ENTER;

if( radius <= 300)
{
    radius ++;

}

}

void keyPressed()
{

if((key== ENTER) && (timespressed == 0))
{
    radius = 0;
    println("hit");
    timespressed = 1;
}
if((key== ENTER) && (timespressed == 01))
{
    radius = 0;
    println("hit");
    timespressed = 2;
}
if((key== ENTER) && (timespressed == 2))
{
    radius = 0;
    println("hit");
    timespressed = 3;
}

}

Replies(5)

benjaminm..

Re: help

2 years ago

here's a working version:

float radius;
int timespressed,last;

void setup()
{
size(300,300);
radius=10;
smooth();
}

void draw ()
{
background(0);
ellipse(width/2,height/2,radius,radius);
radius++;
radius%=width/2;
}

void keyPressed()
{
if(key== ENTER)
{
    timespressed++;
    if(timespressed>last){
      radius=0;
      last=timespressed;
      timespressed=0;
    }
}
}

if you'd like we can discuss why your version didnt work...

cped01

Re: Re: help

2 years ago

Thank you very much!!!!!!!! and yes, being a novice in Processing i would love to learn from my mistakes?

benjaminm..

Re: help

2 years ago

some thoughts about coding in general:

first of all you may want to logically plan your sketch before doing any coding. i use pieces of paper for that, and it really helps. e.g. here you obviously needed a variable to store the minimum number of presses to zero the circle, (thats why i created 'last'), which changes at every successful zeroing, and this requirement would have been evident if you had a plan on paper. by a plan i mean stuff like this:

If A happens then B should happen.
Find a way to see if A happened or not?
A happens, when x is greater than y.
Make variables to store x and y.

so on...(this could also be done by drawing logical connections and stuff, it really depends on how your mind works)

syntax (coding) problems with your sketch:
"int timespressed = ENTER;" - doesnt make much sense. before writing a line of code you should always think about the purpose of that line. (im sure you had something in your mind when you wrote this, but i just cant figure what :).)

well, i hope this helps

benjaminm..

Re: help

2 years ago

and here's a commented version of the working version, each comment states the purpose of that line, it may teach you something:

float radius; //make variable called "radius", which stores float type of numbers
int timespressed,last; //make two int type variables, called "timespressed" and "last" (this could have been done in two separate lines, its just shorter)
void setup() //tell the program what to do once after pressing run
{
size(300,300); //set the size of the sketch
radius=10; //assign an initial value to sketch
smooth(); //enable antialiasing
}
void draw () //tell the program what to do in every cycle (over and over again) after setup has been ran once
{
background(0); //set the background black
ellipse(width/2,height/2,radius,radius); //draw an ellipse at the center of the screen, using the variable 'radius' as... well, not radius, but diameter, take a closer look at the ellipse() function
radius++; //increment 'radius' by one (the circle will be one pixel greater in the next cycle)
radius%=width/2; //this is a bit tricky, i dont know if you are familiar with '%' (no, its not percent) or not, if not then click, also 'x%=y' is a shorter way of saying 'x=x%y', (it also works with other mathematical operations, like 'x+=y' means 'x=x+y' etc...)
}
void keyPressed() //what to do when a key (any key!) is pressed
{
if(key== ENTER) //check whether the pressed key is ENTER, if yes, continue
{
timespressed++; //increment 'timespressed' by one (since we pressed ENTER)
if(timespressed>last){ //check whether it was pressed more times than the last time, if yes, continue
radius=0; //zero the circle
last=timespressed; //store ("make the program remember") how many presses were needed this time to zero the circle
timespressed=0; //start a new counting of presses
}
}
}

also, the reference (an encyclopedia-like collection of every single word and expression and statement processing understands) is a real eden

PhiLho

Re: help

2 years ago

PS.: Try and find more significant subjects, 90% at least of the topics is to seek for help, so if each and every one has the same subject, we are in trouble to find a specific one!

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