Expecting TRIPLE_DOT, found 'tempId' And Other Things

Programming Questions

Pershonkey

Expecting TRIPLE_DOT, found 'tempId' And Other Things

in Programming Questions • 10 months ago

Hi, I'm a new programmer, and I had a question about some errors I had with this sketch. I've just been experimenting with arrays and class files over the last few days, and am new to some of the syntax. In this program, I'm trying to get a series of rectangles acting as buttons to switch colors when they're pressed using arrays, just to use as a template for some more advanced code. It's not done yet, as I tested it out to see if it would work, got an Expecting TRIPLE_DOT error, and decided that I would fix this bug as well as get some feedback on how to make it better/fix other things before moving on. I looked up the TRIPLE_DOT error, and also tried to find syntax for declaring a single value for an int array inside a constructor online, but found nothing that was helpful/noob friendly.

Anyways, here's my code for the main file:

int i;
int j;
int numButtonX;
int numButtonY;
Button [][] newButton;
boolean [][] on;
void setup() {
size(500,500);
numButtonX = width/50;
numButtonY = height/50;
newButton = new Button[numButtonX][numButtonY];
on = new boolean[numButtonX][numButtonY];
for(i=0;i<numButtonX;i++) {
for(j=0;j<numButtonY;j++) {
newButton[i][j] = new Button(i,j,i*50,j*50);
on[i][j] = false;
}
}
}
void draw() {
for(i=0;i<numButtonX;i++) {
for(j=0;j<numButtonY;j++) {
newButton.display();
}
}
}
void mousePressed() {
for(i=0;i<numButtonX;i++) {
for(j=0;j<numButtonY;j++) {
on[i][j] = false;
}
}
on[round(mouseX/50)][round(mouseY/50)] = true;
}

And for the Button class:

class Button {
int [] id = new int [2];
int x;
int y;
int w = 45;
int h = 45;
Button(int tempId[0], int tempId[1], int tempX, int tempY) {
id[0] = tempId[0];
id[1] = tempId[1];
x = tempX;
y = tempY;
}
void display() {
if(on[id[0]][id[1]]) {
fill(255);
rect(x,y,w,h);
}
else if(!on[id[0]][id[1]]) {
fill(100);
rect(x,y,w,h);
}
}
}

Thanks!

Replies(2)

GoToLoop

Re: Expecting TRIPLE_DOT, found 'tempId' And Other Things

10 months ago

Sketch @ line #24 -> newButton [i][j].display();

class Button @ line #8 -> Button( int id0, int id1, int tempX, int tempY) {

class Button @ line #9 & #10 -> id[0] = id0; id[1] = id1;

You can't pass an array as parameter specifying its index like int tempId[0],
Although, you may choose to pass it raw like -> int tempId[],

But you have to call it passing a real array. Something you haven't done anyways!

P.S.: I guess TRIPLE_DOT means some kind of variant parameters or something.
Never used such feature yet myself.

Pershonkey

Re: Expecting TRIPLE_DOT, found 'tempId' And Other Things

10 months ago

1. Thank you very much! I used your id[_] = id_ idea, and that fixes it.

2. Line 24: Forgetting that embarrasses me. Such an elementary mistake! *Slaps self* Another embarrassing mistake: On line 33, I inverted the mouseX and mouseY functions.

3. If you're referring to why I put int [] id in the class file, its because besides defining it in the main sketch, I don't use it outside the class, and I would also have to deal with 2D arrays, which cause way more errors for me than normal arrays. If thats not what your referring to, ignore #3.

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