Maybe i would create 2 maps, the one you already got showing the course and the other one just showing walls, the hole and so one in different colours...  guess this is an easy way to create courses with photoshop... you can then just check the color at the ball point http://processing.org/reference/get_.html and decide what to do... white line=collision, red=putt, and even simulate different undergrounds like sand where the ball behave differently...

http://www.bilder-hochladen.net/files/aaee-1.jpg
( i made a mistake here, you shouldnt use antialiasing)

Cedric wrote on Mar 22^nd, 2009, 3:42am:


Ok I think I understand what you mean, but how would I do two maps on top of each other in processing idk....maybe im way off.

My other screen name is messed up. So I made a new one.

Thank you so much Cedric. Im doing this as part of a school project and my teacher hasn't been much help to me.

The two maps are working (showing only the color map) and Ive gotten as far as checking for the Balls position. This is where I get confused now:

//check the bw map at the ball position
if( bwMap.get(ballX, ballY) == 255) then ball should deflect off the wall...

if( bwMap.get(ballX, ballY) == (red)) putt ball...

if it checks and the map is black... the ball just rolls as it was shot.

[/quote]

Cedric wrote on Mar 26^th, 2009, 2:28pm:


I have a Ball class, but no I haven't figured out how to make my ball move yet.
I was hoping to do a click,drag, and release type movement.

I understand. I wouldn't expect you to do it. I've found the code I need here: http://www.skanaar.com/applets/billiards/ .

I've just spent 2 days trying to take the pieces I need and get them to fit my code; all to no avail. Ive pretty much started over:


Ball ball1;
Hole hole1;

void setup() {
 size(800, 800);
 smooth();
 PImage colorMap = loadImage("Level1.jpg");//level1 course jpg image.
 PImage bwMap = loadImage("Level1bw.jpg");//black and white map of the image.

 image(colorMap, 0, 0); //shows the color course on screen


 ball1 = new Ball(10,135,175);
 hole1 = new Hole(632,530,25);
}

void draw (){

 ball1.move();

 ball1.display();
 hole1.display();


 println(mouseX);
 println(mouseY);

}



_______________________



class Ball {

 //variables
 float r; // radius
 float x,y,xpos,ypos;
 float xspeed,yspeed;
 color c = color(255);


 // Constructor
 Ball(float tempR, float tempX, float tempY) {
   r = tempR;
   x = tempX;
   y = tempY;
   xspeed = 0;
   yspeed = 0;    
 }


 void move() {

   x += xspeed; // Increment x
   y += yspeed; // Increment y

   // Check horizontal edges
   if (x > width || x < 0) {
     xspeed *= - 1;
   }

   // Check vertical edges
   if (y > height || y < 0) {
     yspeed *= - 1;
   }
 }


 // Draw the ball
 void display() {
   {
     noStroke();
     fill(c);
     ellipse(x,y,r*2,r*2);

   }
 }
}
_____________________
class Hole {

 float r;  
 float x,y;
 color c2 = color(0,0,0);
 boolean displaying;

 Hole(float tempX,float tempY,float tempR) {

   r = tempR;
   x = tempX;
   y = tempY;
 }

 void display() {
   noStroke();
   fill(c2);    
   ellipse(x,y,r,r);
 }
}

PImage colorMap ;
PImage bwMap;
boolean showball = true;
Table game;
//--------------
void setup(){
 size(800,800);
 smooth();
 game = new Table(1,1,799,799);
 game.startGame();
 colorMap = loadImage("level1.gif");//level1 course jpg image.
 bwMap = loadImage("level1bw.gif");//black and white map of the image.
}
//--------------
void draw(){
 background(32);
 image(colorMap, 0, 0); //shows the color course on screen
 game.update();
 game.visualize();
}
//--------------
void keyPressed(){
 println( game.kineticEnergy() );
}
//--------------
void mousePressed(){
 game.mousePressed(mouseX-game.x,mouseY-game.y);
}
//--------------
void mouseReleased(){
 game.mouseReleased(mouseX-game.x,mouseY-game.y);
}
//=============================
class Table{
 float drag = 0.985;
 float elasticity = 0.9;
 float wallElasticity = 1.1;
 float pushFactor = 0.05;
 float maxPush = 10;

 Ball[] balls;
 Ball selectedBall;
 int x,y,width,height;
 //--------------
 Table(int x, int y, int w, int h){
   this.x = x;
   this.y = y;
   width = w;
   height = h;
 }
 //--------------
 void startGame(){
   buildBalls(1);
 }
 //--------------
 void buildBalls(int count){
   balls = new Ball[count];
   for(int i=0;i<count;i++)
     balls[i] = new Ball( 120,730,1, this);
 }
 //--------------
 void update(){
   //simulation
   for(int i=0;i<balls.length;i++)
     balls[i].update();


 }

 //--------------
 void visualize(){

   translate(x,y);
   noStroke();


   //draw que
   stroke(255);
   if(mousePressed && selectedBall != null)
     line(selectedBall.x,selectedBall.y,mouseX-x,mouseY-y);

   //drawing
   for(int i=0;i<balls.length;i++)
     if(showball) balls[i].visualize();
 }
 //--------------
 float kineticEnergy(){
   float energy=0;
   for(int i=0;i<balls.length;i++)
     energy += mag( balls[i].vx, balls[i].vy );
   return energy;
 }
 //--------------

Thank you so much. Ill keep busy trying to figure out what doesnt belong and then redo it.