From 7f319b1ce2ad2258bd6279042fcc3ecd7e1c0b3a Mon Sep 17 00:00:00 2001
From: stoussaint1 <stoussaint@ucvts.tec.nj.us>
Date: Tue, 10 Nov 2015 14:00:25 -0500
Subject: [PATCH] updated gravity balls

---
 GravityBallCode/GravityBallCode.pde | 62 ++++++++++++++++-------------
 1 file changed, 35 insertions(+), 27 deletions(-)

diff --git a/GravityBallCode/GravityBallCode.pde b/GravityBallCode/GravityBallCode.pde
index df2493b..5883392 100644
--- a/GravityBallCode/GravityBallCode.pde
+++ b/GravityBallCode/GravityBallCode.pde
@@ -1,38 +1,46 @@
-//declare variables
-float x, y, velX, velY, diam;
+int count = 30;
+
+
+
+float[] x = new float[count];
+float[] y = new float[count];
+float[] velx = new float[count];
+float[] vely = new float[count];
+float[] diam = new float[count];
 
 void setup() {
-  //set size of canvas
-  size(800, 600);
-
-  //initialize variables
-  x = width/2;
-  y = height/2;
-  diam = 80;
-  velX = random(-5, 5);
-  velY = random(-5, 5);
+  size(600, 600);
+
+
+  for (int i = 0; i < count; i++) {
+    x[i] = random(width);
+    y[i] = random(height);
+    diam[i] = 10 + 10*i;
+    velx[i] = random(-5, 5);
+    vely[i] = random(-5, 5);
+  }
 }
 
 void draw() {
-  //draw background to cover previous frame
+
   background(0);
 
-  //draw ball
-  ellipse(x, y, diam, diam);
+  for (int i = 0; i < count; i++) {
+    fill(random(255), random(255), random(255));
+    ellipse(x[i], y[i], diam[i], diam[i]);
+    x[i] += velx[i];
+    y[i] += vely[i];
 
-  //add velocity to position
-  x += velX;
-  y += velY;
 
-  //bounce ball if it hits walls
-  if (x + diam/2 >= width) {
-    velX = -abs(velX);    //if the ball hits the right wall, assign x velocity the negative version of itself
-  } else if (x - diam/2 <= 0) {
-    velX = abs(velX);     //if the ball hits the left wall, assign x velocity the positive version of itself
-  }
-  if (y + diam/2 >= height) {
-    velY = -abs(velY);
-  } else if (y - diam/2 <= 0) {
-    velY = abs(velY);
+    if (x[i] + diam[i]/2 >= width) {
+      velx[i] = -abs(velx[i]);
+    } else if (x[i] - diam[i]/2 <= 0) {
+      velx[i] = abs(velx[i]);
+    }
+    if (y[i] + diam[i]/2 >= height) {
+      vely[i] = -abs(vely[i]);
+    } else if (y[i] - diam[i]/2 <= 0) {
+      vely[i] = abs(vely[i]);
+    }
   }
 }
\ No newline at end of file