Re-adding Topics to SVN

java/examples/Topics/Advanced Data/ArrayListClass/Ball.pde

@@ -0,0 +1,50 @@
+// Simple bouncing ball class
+
+class Ball {
+  
+  float x;
+  float y;
+  float speed;
+  float gravity;
+  float w;
+  float life = 255;
+  
+  Ball(float tempX, float tempY, float tempW) {
+    x = tempX;
+    y = tempY;
+    w = tempW;
+    speed = 0;
+    gravity = 0.1;
+  }
+  
+    void move() {
+    // Add gravity to speed
+    speed = speed + gravity;
+    // Add speed to y location
+    y = y + speed;
+    // If square reaches the bottom
+    // Reverse speed
+    if (y > height) {
+      // Dampening
+      speed = speed * -0.8;
+      y = height;
+    }
+  }
+  
+  boolean finished() {
+    // Balls fade out
+    life--;
+    if (life < 0) {
+      return true;
+    } else {
+      return false;
+    }
+  }
+  
+  void display() {
+    // Display the circle
+    fill(0,life);
+    //stroke(0,life);
+    ellipse(x,y,w,w);
+  }
+}