I'm not sure I understand what your problem is, so here are a few explanations which I hope will make things a little clearer.
It's an old-fashioned brick-breaker. You move the bear holding an umbrella. A white ball bounces off the bricks, the edges of the screen and the bear's umbrella. The ball moves by itself, but you can influence its direction depending on where you bounce it on the umbrella. The aim of the game is to break the bricks and prevent the ball from falling into the water below the bear. If the ball falls, the bear throws a new one (but you only have a maximum of five balls).
You can move the bear from left to right with the arrow keys, or with the keys A and D, or Q and D, or J and L. You can also move the bear by clicking the mouse on the screen, and the bear will move horizontally in the direction of the mouse.
Does this help?