Processing: Making an array of an image fall

Programming Questions

hoshi_rai..

Processing: Making an array of an image fall

in Programming Questions • 5 months ago

Hi, I'm a beginner to Processing.

I'm trying to make a game where an array of pictures (pokeballs) fall randomly from the top of the screen and the user has to shoot at them and every time the user hits one the speed gets increased by 1. However, I'm having difficulty getting the pokeballs to fall so I was wondering is anyone could help me? To be honest, I've looked at loads of examples and I just don't get it as there's different ways and it's confusing me.

Main class:
PFont font;
int life = 3;
boolean playerAlive = true;
PImage back;
void setup(){
size(500,500);
font = loadFont("CourierNewPS-BoldMT-48.vlw");
image = loadImage("Pokeball2.png");
frameRate(60);
smooth();
back= loadImage("bg.jpg");
}
void draw(){
background (back);
image.update();
//text
text("Lives remaining:"+life, width-250,height-30);
fill(0);
if(life<=0){
textFont(font, 20);
fill(0);
text("Gave Over!", width/2-100, height/2);
}
}
class Pokeball{
float x, y, s;
float radius = 20;
Pokeball (float x, float y, float s){
xpos = x;
ypos = y;
speed = s;
}
void update(){
ypos+=speed;
if (ypos>20+20){
ypos = 0-20;
speed = 2.0;
xpos = random(500);
if (xpos - 20<=0){
xpos = 30.0;
}
}
}
}
Pokeball class:
PImage[] image = new PImage[500];
float x = random (500); //x axies location
float y = 505;//y axies location
float speed = 2.0;
class Pokeball{
PImage [] image = {getRandomX(), getRandomX, getRandomX, getRandomX, getRandomX};
PImage [] image = {0,0,0,0,0};
}

Replies(2)

PhiLho

Re: Processing: Making an array of an image fall

5 months ago

Indeed, your code is confusing. image is actually an array, so the name is misleading (we usually use plural names for arrays), I don't know why you want to create 500 images!, you assign one image to the array, and I don't know what image.update() does.

The Pokeball class at the bottom conflicts with the previous one, and doesn't make sense at all (why redeclare image? why declare it twice? what is getRandomX?)
And you doesn't even create an instance of the Pokeball class.

Instead of typing lot of code then finding it doesn't compile, you should make small changes and test them right away. Processing makes it easy, it will avoid having tons of errors at once, now knowing where to fix them.

hoshi_rai..

Re: Processing: Making an array of an image fall

5 months ago

I've recoded it now so that it makes sense and I got the images to drop now :) thank you for the reply!

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