incompatible operand types foat[] and int

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alexmcdou..

incompatible operand types foat[] and int

in Programming Questions • 2 years ago

I know I need to find out how to write an if statement that says when a line hits the ellipse play a sound. I know the position of the ellipse is mouseX and mouseY and the dimentions are 50pixels by 20pixels, but i cant quite work out where each line is being drawn exactly and how to arrange it in an if statement? Please help I have been at it for hours and have gotten nowhere.

This is my code:

import ddf.minim.*;
import ddf.minim.signals.*;
import ddf.minim.analysis.*;
import ddf.minim.effects.*;

Minim minim;

AudioPlayer song2;
AudioPlayer song3;
AudioPlayer song4;

float[] yCoord;
float[] speed;
float[] circles;
int space=6;
float size1=50;
int r=0;
int g=0;
int b=255;
void setup()
{
minim = new Minim(this);

song2 = minim.loadFile("noise1.aif");
song3 = minim.loadFile("nosie2.aif");
song4 = minim.loadFile("noise3.aif");
song5 = minim.loadFile("noise4.aif");

size (500,500);
smooth();
yCoord = new float [width/space+1];
speed = new float [width/space+1];
for(int i=0;i<yCoord.length;i=i+1) {

    yCoord[i]=0;
    speed[i]=random(6,8);
}
circles = new float [50+1];
for(int n=0;n<circles.length;n=n+1) {
    circles[n]=random(10,50);
}

background(0);
fill(0,5);
rect(0,0,width,height);
stroke(56, 146,240);
strokeWeight(5);
}

void draw()
{
noCursor();
noStroke();
fill(200);
ellipse(mouseX,mouseY,50,20);
fill(0,10);
noStroke();
rect(0,0,width,height);
stroke(56, 146,240);
strokeWeight(5);

for(int i=0;i<yCoord.length;i=i+1) {
    line(i*space,yCoord[i]-5,i*space,yCoord[i]);
    yCoord[i]= yCoord[i] + speed[i];


    if (yCoord[i]>500)
    {
      yCoord[i]=0;
    }

}

if (yCoord[i]==mouseX&&yCoord[i]==mouseY) //<<< I thought it should go something like this to start off with

{ song1.play();

}

}

void stop()
{
song2.close();
minim.stop();
super.stop();
}

First it says that it cannot find anything called "i", then when I take away the [i] from each yCoord in the if statement it says incompatible operand types foat[] and int. How do I fix this?

Replies(4)

PhiLho

Re: incompatible operand types foat[] and int

2 years ago

We cannot run your code because of Minim code (which has nothing to do with your issue, I suppose).
So we have to guess where you have your problem. Fortunately, there aren't so much ifs in your code...
Now, the error you report doesn't make much sense, as yCoord[i] is already used above.
Can you report the exact error message you have? And no, there is no point in removing [i]

Side note, useful shortcuts:
instead of i = i + 1 you can write i++
instead of yCoord[i] = yCoord[i] + speed[i]; you can write yCoord[i] += speed[i];

Oh, and don't put anything before the size() call in setup(). Move it to the top of the function.

PhiLho

Re: incompatible operand types foat[] and int

2 years ago

Come to think of it, I can just remove the Minim code...
Trying to run it confirms the error is on the second if.
Putting the caret on the closing brace just before the condition, I see it matches the one of the for loop.
It isn't obvious at first because of semi-random indenting. An advice: take time to make consistent indenting, it can save debug time! You can also use the auto-format feature of the PDE.
So, move the 'if' inside the for loop and it should work better.

alexmcdou..

Re: Re: incompatible operand types foat[] and int

2 years ago

I'm sorry about my messy code, the first time I had even herd of processing was about a month or so ago so I'm a bit new. Also the course I'm doing is based around using processing from a pure design perspective, so I haven't been taught how to make my code more easily readable as we are not graded on it. My project is due in a few hours so I ended up getting help from a friend, we also changed my idea slightly because we couldn't get exactly what I was after. Ended up getting a way better result which I'm excited about. Thank you so much for going over my question though, I will be sure to use the useful shortcuts to tidy up my code before I hand it in. :)

PhiLho

Re: incompatible operand types foat[] and int

2 years ago

Yes, my remarks aren't for reducing your grade or scolding you, but to try and give advices how to get better help in the future...

(and to be able to read back your own code in a few days/months/years...)

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