Simple Circle Game

Programming Questions

sweethd11

in Programming Questions • 1 year ago

Hey everyone,

I asked a question earlier about how to expand a circle with a mouse click and got very helpful answers. I have another question about how I can get the circle that is expanding to stop when I release my mouse button. I figure I will have to use void mouseReleased () but I want the circle to stay the shape it has expanded to, not return to a small dot.

My code so far is as follows:

int a = 0;

void setup() {

size(500,500);

smooth();

}

void draw() {

fill(255);

ellipse(250,250,300,300);

a++;

fill(0);

ellipse(width/2, height/2,a,a);

if (a>width) {

a=0;

}

if (mousePressed ==true) {

a = a++;

}else{

a=0;

}

//void mouseReleased() {

//if(a==0) {

//a=a++;

// }else{

//a=0;

//}

Any advice would be greatly appreciated,

Thanks

Replies(6)

calsign

Re: Simple Circle Game

1 year ago

For that, you do not need mouseReleased().

Firstly, you have:

if (mousePressed ==true) {
a = a++;
}else{
a=0;
}

All that that does is reset a to be 0 whenever the mouse is released.
a = a++; does absolutely nothing; instead, replace this with a++;.
Also, you have a++; earlier in draw(); you don't need that.

Then, to stop the circle from expanding but not reset its size, simply remove the else statement found in the block of code above; all it does is reset the size to be 0.

I also recommend that you add a call to background() at the beginning of draw().

sweethd11

Re: Re: Simple Circle Game

1 year ago

Thanks for the advice! I'm new to processing and I'm trying to figure out how all this works. I have more questions relating to where I should go from here? I'm trying to make this concept into an easy game. The objective would be to get the black center circle to expand to the size of the white circle. You want to get the black circle as close as you can to the black perimeter of the white circle without coming in contact with it. As soon as contact or a collision is made a "gameover" screen would appear. I guess what I'm asking is should I make the collision code first or should I concentrate on making a startscreen and gameover screen before I make the code for a collision?

Hopefully this makes sense.

Thanks

tishan_pu..

Re: Simple Circle Game

1 year ago

Just adding some more stuff to improve the quality of the code.

Do you need

ellipse(250,250,300,300);

this ellipse. If you need it I suggest to use width/2 instead of 250. That will enhance portability of the code(Means you can then change the size of the panel anytime and still you will have your ellipse in the center.).

calsign

Re: Simple Circle Game

1 year ago

Making the collision code should come first; it's relatively simple to detect that kind of thing.
If the radius of the inner circle is larger than that of the outer one, you have a game over.

Once you have the logic for that working and printing out the correct results, you can move on to the menu and interface programming.

sweethd11

Re: Simple Circle Game

1 year ago

Okay...

So I think I have the collision worked out, but I'm struggling with how to incorporate a startscreen and gameover screen. I was looking at other games posted on open processing and trying to figure out how they switched over from gameplay to menu screens. I tried incorporating a code that I saw used but I'm not sure if I'm using it correctly. If anyone has any suggestions as to how I could go about creating a gameover and startscreen it would be much appreciated. I'm a newbie at this.

Here is the code I have but not sure if I'm using it correctly,

int a = 0;

int num = 0

void setup() {

size(500,500);

smooth();

}

void draw() {

background(120);

switch(num) {

case 0:

text("CLICK TO START",200,250);

if (mousePressed==true) {

num = 1;

}

break;

case 1:

fill(255);

strokeWeight(10);

ellipse(width/2, height/2,400,400);

fill(0);

ellipse(width/2, height/2,a,a);

if (a>width) {

a=0;

}

if (mousePressed == true) {

a++;

}

if (a>380) {

num = 2; // if inner circle reaches the black parameter "gameover" screen appears

}

break;

case 2:

text("GAMEOVER", 220, 250);

text("Press A Key On Keyboard To Restart", 160, 300);

if (keyPressed ==true) { // if key is pressed goes back to case 1

num = 1;

}

break;

}

calsign

Re: Simple Circle Game

1 year ago

The problem that you have is that every time the game ends and is restarted, you have the data from the last play left over. When you restart it (after num = 1;) you need to reset a to be 0.

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