public class Sprite {

    int x,y;
    PImage img;
    float s;
    
    int layer;
    
    public Sprite( PImage img, int x, int y, float s, int layer ) {
        this.img = img;
        this.x = x;
        this.y = y;
        this.s = s;
        this.layer = layer;
    }

    public void moveBy( int x, int y) {
       this.x += x;
       this.y += y; 
    }

    public void draw() {
        image( img, x, 300 - y - img.height * s, img.width * s, img.height * s );       
    }
    
    public boolean isVisible() {
        return x + img.width * s > 0;
    }
}