Use a Vector2 to track entity position.

core/src/com/me/brickbuster/entity/Ball.java

@@ -36,9 +36,7 @@ public class Ball extends Entity {
 			return;
 		}
 
-		float newX = getX() + (direction.x * speed);
-		float newY = getY() + (direction.y * speed);
-		Vector2 ball = new Vector2(newX, newY);
+		Vector2 ball = getPos().cpy().add(direction.cpy().scl(speed));
 
 		boolean brick_collision = false;
 		Iterator<Brick> brickIterator = getBrickBuster().getBricks().iterator();
@@ -51,7 +49,7 @@ public class Ball extends Entity {
 				Vector2 segment = v2.cpy().sub(v1);
 				Vector2 nearest = Utils.nearestPoint(v1.cpy(), segment, ball.cpy());
 
-				if (nearest.dst(newX, newY) <= RADIUS) {
+				if (nearest.dst(ball.x, ball.y) <= RADIUS) {
 					brickIterator.remove();
 					Utils.reflect(direction, segment.nor());
 					brick_collision = true;
@@ -60,11 +58,11 @@ public class Ball extends Entity {
 			}
 		}
 
-		if (newX + RADIUS > BrickBuster.WIDTH || newX - RADIUS < 0) {
+		if (ball.x + RADIUS > BrickBuster.WIDTH || ball.x - RADIUS < 0) {
 			Utils.reflect(direction, BrickBuster.VERTICAL_EDGE);
-		} else if (newY + RADIUS > BrickBuster.HEIGHT) {
+		} else if (ball.y + RADIUS > BrickBuster.HEIGHT) {
 			Utils.reflect(direction, BrickBuster.HORIZONTAL_EDGE);
-		} else if (newY - RADIUS < 0) {
+		} else if (ball.y - RADIUS < 0) {
 			reset();
 		}
 
@@ -73,13 +71,12 @@ public class Ball extends Entity {
 			Vector2 lineDir = paddle.getValue().sub(paddle.getKey());
 			Vector2 nearest = Utils.nearestPoint(paddle.getKey().cpy(), lineDir, ball.cpy());
 
-			if (nearest.dst(newX, newY) < RADIUS) {
+			if (nearest.dst(ball.x, ball.y) <= RADIUS) {
 				paddleCollision();
 			}
 		}
 
-		setX(getX() + (direction.x * speed));
-		setY(getY() + (direction.y * speed));
+		setPos(ball);
 	}
 
 	public void launch() {

core/src/com/me/brickbuster/entity/Entity.java

@@ -1,19 +1,19 @@
 package com.me.brickbuster.entity;
 
 import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
+import com.badlogic.gdx.math.Vector2;
 import com.me.brickbuster.BrickBuster;
 
 public abstract class Entity {
 
 	private ShapeRenderer shapeRenderer;
 	private BrickBuster brickBuster;
-	private float x, y;
+	private Vector2 pos;
 
 	public Entity(BrickBuster brickBuster, int x, int y) {
 		this.shapeRenderer = new ShapeRenderer();
 		this.brickBuster = brickBuster;
-		this.x = x;
-		this.y = y;
+		this.pos = new Vector2(x, y);
 	}
 
 	public abstract void render();
@@ -28,20 +28,28 @@ public abstract class Entity {
 		return shapeRenderer;
 	}
 
+	public Vector2 getPos() {
+		return pos;
+	}
+
+	public void setPos(Vector2 pos) {
+		this.pos = pos;
+	}
+
 	public float getX() {
-		return x;
+		return pos.x;
 	}
 
 	public void setX(float x) {
-		this.x = x;
+		pos.x = x;
 	}
 
 	public float getY() {
-		return y;
+		return pos.y;
 	}
 
 	public void setY(float y) {
-		this.y = y;
+		pos.y = y;
 	}
 
 }