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Programming noob, help with simple program

[1 Reply]
- 19-Nov-2012 08:26 PM
- Forum: Programming Questions
Okay so this: http://www.ic.ucsc.edu/~ptantalo/cmps5J/Fall12/Examples/BallBounce/ is what the program I'm trying to write is supposed to do.

This is what I have so far:

// ball variables

float X, Y, Xspeed, Yspeed;

// environment variables

float gravity, stopSpeed, dissipation;

void setup() {

size(500,500);

smooth();

// initialize ball variables

X=250;

Y=50;

Xspeed=0;

Yspeed=0;

// initialize physical variables

gravity=0.6;

stopSpeed=0.2;

dissipation=0.08;

}

// do not change this function

void draw() {

background(0,255,255);

displayBall();

if( mousePressed && mouseOnBall() ){

holdBall();

}else{

moveBall();

updateSpeed();

}

}

void displayBall(){

fill(255, 0, 0);

ellipse(X, Y, 100, 100);

}

void holdBall(){

fill(255,0, 0);

ellipse(mouseX, mouseY, 100, 100);

}

void moveBall(){

Y += Yspeed;

X += Xspeed;

}

void updateSpeed(){

if( abs(speed)<stopSpeed ){

speed=0.0;

}else if (y>height-50){

speed = -(1-dissipation);

}

boolean mouseOnBall(float d, 50){

float d = dist(X, Y, mouseX, mouseY);

return d<50;

}

I get an unexpected token: boolean when I try to run it. Can someone tell me what I'm doing wrong? I am super new to programming so I'm sure there's a lot wrong with it. Any help is much appreciated!

Unexpected token

[2 Replies]
- 31-Oct-2012 07:12 PM
- Forum: Programming Questions
I am getting an unexpected token: void error for line 72:

void mousePressed() {

and I can't figure out why! I'm not missing any semicolons and I don't have any extra or missing curly braces. It's a super simple program, I'm sure the problem will be obvious to anyone with more experience than me

boolean mouseInRed;

boolean redOn = false;

boolean mouseInGreen;

boolean greenOn = false;

boolean mouseInBlue;

boolean blueOn = false;

void setup() {

size(500, 500);

rectMode(CORNERS);

}

void draw() {

if (redOn) {

background(255, 0, 0);

}

else {

background(0);

}

if (greenOn) {

background(0, 255, 0);

}

else {

background(0);

if (blueOn) {

background(0, 0, 255);

}

else {

background(0);

}

fill(255, 0, 0);

stroke(175);

strokeWeight(12);

rect(50, 200, 150, 300);

if (redOn) {

noFill();

stroke(0);

strokeWeight(2);

rect(50, 200, 150, 300);

}

fill(0, 255, 0);

stroke(175);

strokeWeight(12);

rect(200, 200, 300, 300);

if (greenOn) {

noFill();

stroke(0);

strokeWeight(2);

rect(200, 200, 300, 300);

}

fill(0, 0, 255);

stroke(175);

strokeWeight(12);

rect(350, 200, 450, 300);

if (blueOn) {

noFill();

stroke(0);

strokeWeight(2);

rect(350, 200, 450, 300);

}

void mousePressed() {

mouseInRed = (mouseX > 50) && (mouseX < 150)

&& (mouseY > 200) && (mouseY < 300);

if (mouseInRed) redOn = !redOn;

mouseInGreen = (mouseX > 200) && (mouseX < 300)

&& (mouseY > 200) && (mouseY < 300);

if (mouseInGreen) greenOn = !greenOn;

mouseInBlue = (mouseX > 350) && (mouseX < 450)

&& (mouseY > 200) && (mouseY < 300);

if (mouseInBlue) blueOn = !blueOn;

}

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