Greetings,
I'm new to the forum and fairly new to processing. I tried to find a topic that discussed this already but didn't find one so hope i'm not repeating questions.
We're learning it at multimedia in school but this is the first year we're learning about it so i'm certainly still a novice at it( to put it in a polite way :p).
We were given an assignment to work around an object and i took a cowboy hat, now we had to do something in processing about it. I found a really good example here that i liked to use, called explosion. But i'd like to change the mouse movement into a bullet (square) that will hit my picture and then make it explode.


here's the coding;

PImage img;       // The source image
int cellsize = 2; // Dimensions of each cell in the grid
int COLS, ROWS;   // Number of columns and rows in our system
void setup()
{
 size(200, 200, P3D);
 img = loadImage("eames.jpg"); // Load the image
 COLS = width/cellsize;            // Calculate # of columns
 ROWS = height/cellsize;           // Calculate # of rows
 colorMode(RGB,255,255,255,100);   // Setting the colormode
}
void draw()
{
 background(0);
 // Begin loop for columns
 for ( int i = 0; i < COLS;i++) {
   // Begin loop for rows
   for ( int j = 0; j < ROWS;j++) {
     int x = i*cellsize + cellsize/2; // x position
     int y = j*cellsize + cellsize/2; // y position
     int loc = x + y*width;           // Pixel array location
     color c = img.pixels[loc];       // Grab the color
     // Calculate a z position as a function of mouseX and pixel brightness
     float z = (mouseX / (float) width) * brightness(img.pixels[loc]) - 100.0f;
     // Translate to the location, set fill and stroke, and draw the rect
     pushMatrix();
     translate(x,y,z);
     fill(c);
     noStroke();
     rectMode(CENTER);
     rect(0,0,cellsize,cellsize);
     popMatrix();
   }
 }
}


I tried different things but i'm still new to this and a bit clueless, any help would be welcome.

Thanks in advance.

ps: I apolegize for my english, it's not my native language hehe, hope i was clear.

You can change the cursor to use an image:
http://processing.org/reference/cursor_.html

cursor(MyImage,MyImage.width/2,MyImage.height/2);