Joseph Hom

GravityBallCode/GravityBallCode.pde

@@ -1,38 +1,85 @@
 //declare variables
-float x, y, velX, velY, diam;
-
+float g;
+int count = 2880;
+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(800, 600);
+  for (int i=0; i < count; i++) {
+    //initialize variables
+    x[i] = width/2;
+    y[i] = height/2;
+    diam[i] = random(8);
+    velX[i] = random(-1,1);
+    velY[i]= random(5);
+    g =.1;
+    ellipse(375, 305, 10, 10);
+    ellipse(410, 305, 10, 10);
+  }
 }
 
 void draw() {
   //draw background to cover previous frame
   background(0);
 
-  //draw ball
-  ellipse(x, y, diam, diam);
+mouseClicked(); {
+  for (int i=0; i < count; i++) { //for statement adding arrays 
+
+    //draw ball
+    velY[i]= velY[i] + g; //adding gravity
+    fill(255, 0, random(0, 25)); //red
+    noStroke();  //no line
+    ellipse(x[i], y[i], diam[i], diam[i]); //draw ellipse
+
+    //add velocity to position
+    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
+    //bounce ball if it hits walls
+    if (x[i] + diam[i]/2 >= width) {
+      velX[i] = -abs(velX[i]); //if the ball hits the right wall, assign x velocity the negative version of itself
+      velY[i] = abs(velY[i])*2;
+    } else if (x[i] - diam[i]/2 <= 0) {
+      velX[i] = abs(velX[i]);     //if the ball hits the left wall, assign x velocity the positive version of itself
+      velY[i] = abs(velY[i])*2;
+    }
+    if (y[i] + diam[i]/2 >= height) { //bounce at bottom 
+      velY[i] = -abs(velY[i])*.65; // reduce velY
+    } else if (y[i] - diam[i]/2 <= 0) { //bounce at top
+      velY[i] = abs(velY[i]);
+    }
+    if (y[i] + diam[i]/2 >= height && velY[i] > 0) { //slowing velY at botom 
+      velY[i] = 0;
+      g = 0;
+    }
+    if (y[i] + diam[i]/2 >= height && velY[i] > 0 && velX[i] > 0) { //slowing velX at bottom
+      velY[i] = 0;
+      g=0;
+      velX[i] = velX[i] *.5;
+    }
+    if (y[i] > height+2) { //keeps balls from going off screen 
+      y[i]= height -1;
+      velX[i]= velX[i]*.25;
+    }
   }
-  if (y + diam/2 >= height) {
-    velY = -abs(velY);
-  } else if (y - diam/2 <= 0) {
-    velY = abs(velY);
   }
+  fill(255);
+  ellipse(400, 300, 75, 75);
+  ellipse(400, 350, 65, 150);
+  fill(0);
+  stroke(50);
+  strokeWeight(5);
+  line(365, 305, 380, 305);
+  line(400, 305, 415, 305);
+  // ellipse(375, 305, 10, 10);
+  // ellipse(410, 305, 10, 10);
+  strokeWeight(2);
+  ellipse(390, 315, 25, 5);
 }