Combine X and Count variables

Programming Questions

aksoapy29

Combine X and Count variables

in Programming Questions • 1 year ago

Hello,

This is my first post on the Processing forums. I have been making games in Processing for a day or to, and I have a question. How do I combine 2 variables? Here's an example of what I want todo:

int count=0;

void draw(){

count++;

int X..count // So it will make X(x), or int X1, int X2, etc..

delay(500);

}

Replies(7)

jbum

Re: Combine X and Count variables

1 year ago

It sounds like you probably need to learn a bit about loops, and a little bit about arrays. The two subjects go together.

You need loops to iterate through a set of things, and arrays are a good way to store a set of things. There are some tutorials on both of these subjects here:

http://processing.org/learning/basics/

Look at the sections entitled Control / Iteration (this describes loops)

and all the tutorials under Arrays.

aksoapy29

Re: Combine X and Count variables

1 year ago

I have always been confused with arrays. Could it store three things for me? X1, Y1, and life1? Then change the 1's to any number? It's an idea I have for a new Processing game I'm trying to write.I already wrote one called The Blob, so now for zombies.

aksoapy29

Re: Combine X and Count variables

1 year ago

Idea. I read that arrays are bases off zeros, so instead of one pair being 0 1 2, I could have 3 arrays, so Array1 0, Array2 0, and Array3 0. Lemme try this.

jbum

Re: Combine X and Count variables

1 year ago

Look at this closely, hopefully it will explain what is meant by "based off zero", as well as a few other tricks.

// create an array of 10 values

int[] ary = new int[10];

// set the first one to 5

ary[0] = 5;

// set the 5th one to 5

ary[4] = 5;

// set the 10th one to 5

ary[9] = 5;

// set the first one to a random integer from 1-100

ary[0] = int(random(1,100));

// set a random one to 5

ary[ int(random(ary.length)) ] = 5;

// set a random one to a random value from 1-100

ary[ int(random(ary.length)) ] = int(random(1,100));

// print every one

for (int i = 0; i < 10; ++i) println(ary[i]);

// set every one to 5

for (int i = 0; i < 10; ++i) ary[i] = 5;

// set every one to a random value

for (int i = 0; i < 10; ++i) ary[i] = int(random(1,100));

// set up to 3 random ones to a random value

for (int i = 0; i < 3; ++i) ary[ int(random(ary.length)) ] = int(random(1,100));

aksoapy29

Re: Combine X and Count variables

1 year ago

In away that's easy, but confusing. Here's what I wrote in a couple minutes, but it doesn't work:

int count=0;
int[] X=new int[count];
int[] Y=new int[count];
int[] life=new int[count];
void setup(){
size(400,400);
}
void draw(){
for(int i=0;i<10;i++){
createZombie();
background(255);
rectMode(CENTER);
rect(X[count],Y[count],20,20);
}}
void createZombie(){
X[count]=int(random(400));
Y[count]=int(random(400));
life[count]=5;
count++;

}

jbum

Re: Combine X and Count variables

1 year ago

Remember that the draw function executes many times per second. My guess is that you want to create the zombies once, and then display them in the draw routine. So you need two loops. One to create the zombies (in setup) and one to display them (in draw).

Also, all the code in your loop executes 10 times (10 times per frame). As shown, you are clearing the background 10 times. Setting rectMode to CENTER 10 times....

aksoapy29

Re: Combine X and Count variables

1 year ago

Well the code is going to be very different than what I just posted.

Top Reply