finishing touches help please

Programming Questions

rstitt2

finishing touches help please

in Programming Questions • 1 year ago

i have finished this piece of coursework for my uni class but i would like to give it a few touch ups.

1. add a background to the program

2. make it so the fill colour is random each time

how would i accomplish this.

here is my 2 pieces of code (save the first one as Alien to work and second one as DemoAlien):

class Alien {

int bodyXLoc;

int bodyYLoc;

int bodyWidth;

int bodyHeight;

int eyeWidth;

int eyeHeight;

int eyeXLoc;

int eyeYLoc;

int eyeballWidth;

int eyeballHeight;

int eyeballXloc;

int eyeballYloc;

int earleftWidth;

int earleftHeight;

int earleftXloc;

int earleftYloc;

int earrightWidth;

int earrightHeight;

int earrightXloc;

int earrightYloc;

int mouthXloc;

int mouthYloc;

int mouthHeight;

int mouthWidth;

int noseXloc;

int noseYloc;

int noseHeight;

int noseWidth;

int eyebrowXloc;

int eyebrowYloc;

int eyebrowHeight;

int eyebrowWidth;

int speedXLoc;

int speedYLoc;

Alien(int tempX, int tempY, int tempWidth, int tempHeight, int tempXSpeed, int tempYSpeed) {

bodyXLoc = tempX;

bodyYLoc = tempY;

bodyWidth = tempWidth;

bodyHeight = tempHeight;

speedXLoc = tempXSpeed;

speedYLoc = tempYSpeed;

}

void drawleftear() {

fill(116,250,8);

earleftXloc = bodyXLoc - 50;

earleftYloc = bodyYLoc - 50;

earleftWidth = bodyWidth / 5;

earleftHeight = bodyHeight - 50;

ellipse(earleftXloc,earleftYloc,earleftWidth,earleftHeight);

}

void drawrightear() {

earrightWidth = bodyWidth / 4;

earrightHeight = bodyHeight - 50;

earrightXloc = bodyXLoc + 50;

earrightYloc = bodyYLoc - 50;

ellipse(earrightXloc,earrightYloc,earrightWidth,earrightHeight);

}

void drawbody() {

fill(255);

ellipse(bodyXLoc,bodyYLoc,bodyWidth,bodyHeight);

}

void draweye() {

int offSet = bodyWidth / 10;

eyeXLoc = bodyXLoc - offSet;

eyeYLoc = bodyYLoc - (bodyHeight / 4);

eyeWidth = bodyHeight / 5;

eyeHeight = bodyWidth / 5;

ellipse(eyeXLoc,eyeYLoc,eyeWidth,eyeHeight);

}

void draweyebrow() {

fill(0);

eyebrowXloc = bodyXLoc - 70;

eyebrowYloc = bodyYLoc - 85;

eyebrowWidth = bodyWidth - 150;

eyebrowHeight = bodyHeight / 25;

rect(eyebrowXloc,eyebrowYloc,eyebrowWidth,eyebrowHeight);

}

void draweyeball() {

fill(0);

int eyeballoffset = bodyWidth / 10;

eyeballXloc = bodyXLoc - eyeballoffset;

eyeballXloc = bodyXLoc - 25;

eyeballYloc = bodyYLoc - 50;

eyeballWidth = bodyHeight / 10;

eyeballHeight = bodyWidth / 10;

ellipse(eyeballXloc,eyeballYloc,eyeballWidth,eyeballHeight);

}

void drawmouth() {

fill(0);

mouthXloc = bodyXLoc;

mouthYloc = bodyYLoc + 75;

mouthWidth = bodyWidth - 100;

mouthHeight = bodyHeight - 150;

ellipse(mouthXloc,mouthYloc,mouthWidth,mouthHeight);

}

void drawnose() {

fill(255,3,3);

noseXloc = bodyXLoc - 50;

noseYloc = bodyYLoc + 50;

noseWidth = bodyWidth - 100;

noseHeight = bodyHeight - 100;

ellipse(noseXloc,noseYloc,noseWidth,noseHeight);

}

void move() {

bodyXLoc = bodyXLoc + speedXLoc;

bodyYLoc = bodyYLoc + speedYLoc;

}

void checkForBounce() {

if(bodyXLoc > width - (bodyWidth / 2 )) {

speedXLoc = speedXLoc * -1;

}

if(bodyXLoc < 0 + (bodyWidth / 2 )) {

speedXLoc = speedXLoc * -1;

}

if(bodyYLoc > height - (bodyHeight / 2 )) {

speedYLoc = speedYLoc * -1;

}

if(bodyYLoc < 0 + (bodyHeight / 2 )) {

speedYLoc = speedYLoc * -1;

}

}//endclass

2nd piece:

Alien myAlien;

void setup(){

size(700,700);

myAlien = new Alien(300,175,250,250,3,6);

}

void draw(){

background(75);

stroke(0);

myAlien.drawleftear();

myAlien.drawrightear();

myAlien.drawbody();

myAlien.draweye();

myAlien.draweyebrow();

myAlien.draweyeball();

myAlien.drawmouth();

myAlien.drawnose();

myAlien.move();

myAlien.checkForBounce();

}

Replies(8)

eightohni..

Re: finishing touches help please

1 year ago

Why do you keep writing new posts for the same program? You could use the other thread you already have, if you have more questions.

You already are setting the background color to gray, using background(75). The simplest way to have it be a random color every time you relaunch the sketch would be something like this:

Alien myAlien;
int r,g,b;
void setup(){
size(700,700);
myAlien = new Alien(300,175,250,250,3,3);
// randomly created numbers are always of the type float. therefore you have to change them to an int, before you can use them in the background
r = int(random(255)); // value for red
g = int(random(255)); // value for green
b = int(random(255)); // value for blue
}
void draw(){
background(r,g,b); // the color is made up from the red, green and blue value
stroke(0);
myAlien.move(); // calculates movement
myAlien.drawFace(); // draws the alien
}

Or where you talking about an image for the background?

rstitt2

Re: finishing touches help please

1 year ago

what about if i wanted to set the colour of the alien to random. i am wanting to set the background to an image

eightohni..

Re: finishing touches help please

1 year ago

Sorry, I misunderstood your question.

Setting a background image is quite simple. Check out loadImage() in the reference.

Random colors for the various parts of the face is a bit trickier. I edited your Alien object a bit, for it to generate random colors for the face and nose. Just check out the comments. As soon as you get a hang of it, you can adapt the other face parts accordingly.

Hope this helps.

class Alien {
int bodyXLoc;
int bodyYLoc;
int bodyWidth;
int bodyHeight;
int eyeWidth;
int eyeHeight;
int eyeXLoc;
int eyeYLoc;
int eyeballWidth;
int eyeballHeight;
int eyeballXloc;
int eyeballYloc;
int earleftWidth;
int earleftHeight;
int earleftXloc;
int earleftYloc;
int earrightWidth;
int earrightHeight;
int earrightXloc;
int earrightYloc;
int mouthXloc;
int mouthYloc;
int mouthHeight;
int mouthWidth;
int noseXloc;
int noseYloc;
int noseHeight;
int noseWidth;
int eyebrowXloc;
int eyebrowYloc;
int eyebrowHeight;
int eyebrowWidth;
int speedXLoc;
int speedYLoc;
color cBody; // variable for Body color
color cNose; // variable for Nose color
Alien(int tempX, int tempY, int tempWidth, int tempHeight, int tempXSpeed, int tempYSpeed) {
bodyXLoc = tempX;
bodyYLoc = tempY;
bodyWidth = tempWidth;
bodyHeight = tempHeight;
speedXLoc = tempXSpeed;
speedYLoc = tempYSpeed;
cBody = this.randomColor(); // calls method, receives a random color
cNose = this.randomColor(); // calls same method as above, receives another random color
}
color randomColor() {
color c = color(random(255), random(255), random(255)); // creates a random color
return c; // sends back the color
}
void drawFace() {
this.drawleftear();
this.drawrightear();
this.drawbody();
this.draweye();
this.draweyebrow();
this.draweyeball();
this.drawmouth();
this.drawnose();
}
void drawleftear() {
fill(116,250,8);
earleftXloc = bodyXLoc - 50;
earleftYloc = bodyYLoc - 50;
earleftWidth = bodyWidth / 5;
earleftHeight = bodyHeight - 50;
ellipse(earleftXloc,earleftYloc,earleftWidth,earleftHeight);
}
void drawrightear() {
earrightWidth = bodyWidth / 4;
earrightHeight = bodyHeight - 50;
earrightXloc = bodyXLoc + 50;
earrightYloc = bodyYLoc - 50;
ellipse(earrightXloc,earrightYloc,earrightWidth,earrightHeight);
}
void drawbody() {
fill(cBody); // fill with value from variable
ellipse(bodyXLoc,bodyYLoc,bodyWidth,bodyHeight);
}
void draweye() {
int offSet = bodyWidth / 10;
eyeXLoc = bodyXLoc - offSet;
eyeYLoc = bodyYLoc - (bodyHeight / 4);
eyeWidth = bodyHeight / 5;
eyeHeight = bodyWidth / 5;
ellipse(eyeXLoc,eyeYLoc,eyeWidth,eyeHeight);
}
void draweyebrow() {
fill(0);
eyebrowXloc = bodyXLoc - 70;
eyebrowYloc = bodyYLoc - 85;
eyebrowWidth = bodyWidth - 150;
eyebrowHeight = bodyHeight / 25;
rect(eyebrowXloc,eyebrowYloc,eyebrowWidth,eyebrowHeight);
}
void draweyeball() {
fill(0);
int eyeballoffset = bodyWidth / 10;
eyeballXloc = bodyXLoc - eyeballoffset;
eyeballXloc = bodyXLoc - 25;
eyeballYloc = bodyYLoc - 50;
eyeballWidth = bodyHeight / 10;
eyeballHeight = bodyWidth / 10;
ellipse(eyeballXloc,eyeballYloc,eyeballWidth,eyeballHeight);
}
void drawmouth() {
fill(0);
mouthXloc = bodyXLoc;
mouthYloc = bodyYLoc + 75;
mouthWidth = bodyWidth - 100;
mouthHeight = bodyHeight - 150;
ellipse(mouthXloc,mouthYloc,mouthWidth,mouthHeight);
}
void drawnose() {
fill(cNose); // fill with value from variable
noseXloc = bodyXLoc - 50;
noseYloc = bodyYLoc + 50;
noseWidth = bodyWidth - 100;
noseHeight = bodyHeight - 100;
ellipse(noseXloc,noseYloc,noseWidth,noseHeight);
}
void move() {
bodyXLoc = bodyXLoc + speedXLoc;
bodyYLoc = bodyYLoc + speedYLoc;
this.checkForBounce();
}
void checkForBounce() {
if(bodyXLoc > width - (bodyWidth / 2 )) {
speedXLoc = speedXLoc * -1;
}
if(bodyXLoc < 0 + (bodyWidth / 2 )) {
speedXLoc = speedXLoc * -1;
}
println(bodyYLoc);
if(bodyYLoc > height - (bodyHeight / 2 )) {
speedYLoc = speedYLoc * -1;
}
if(bodyYLoc < 0 + (bodyHeight / 2 )) {
speedYLoc = speedYLoc * -1;
}
}
}//endclass

rstitt2

Re: finishing touches help please

1 year ago

thanks it works great now. Thanks for your help. Last question though. when i change the colour i have noticed other people can make their alien flash diffrent colours how do i do that it would be a perfect finish to this piece

eightohni..

Re: finishing touches help please

1 year ago

What exactly do you mean by "flash different colors". As in wild strobeing effects? Or is the color-change based on a certain event, e.g. when the alien bounces off of a wall?

rstitt2

Re: finishing touches help please

1 year ago

yes a wild strobeing effect is what im implying however i do like the idea of it changing colours whenever it bounces off a wall. whatever is easiest i suppose

eightohni..

Re: finishing touches help please

1 year ago

OK, that's quite simple. Remember this?

cBody = this.randomColor();
cNose = this.randomColor();

In above code, these are part of the object constructor. So they are called, whenever the alien object is created. Since you only create one alien at the beginning of the sketch, the color values are only set once. But we want a way to colorize all the face parts not once, but whenever we like:

void setColors() {
cBody = randomColor();
cNose = randomColor();
// add here all the other face parts you want to color
}

Now the color-creation takes place in it's own function. And you can call this function anytime using

setColors();

Now it's up to you, when you want to call the function. If you put it in the constructor, then it will do the same as the old code and just colorize the face parts once. If you put it in the objects "move()" method, then it will be called in every frame, resulting in a strobeing effect. And if you put it into the part, where you check if the alien is colliding with a wall, then it will only change color, when bouncing of a wall.

Hope this helps.

rstitt2

Re: finishing touches help please

1 year ago

thanks the program looks great thankyou for all your help. i only have to change a slight part of the coding now. for some reason whenever i change the height/width of the alien then it doesnt shrink like its supposed to the alien goes out of control and looks really stupid. i understand its something to do with my calculations but i cant figure it out. any ideas???

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