1.use w,a,s,d to move the flying cat and use the arrow keys to move the walking cat (when w is pressed, the flying cat moves up when s is pressed, the flying cat moves down when a is pressed, the flying cat moves left when d is pressed, the flying cat moves right when up arrow is pressed, the walking cat moves up when down arrow is pressed, the walking cat moves down when left arrow is pressed, the walking cat moves left when right arrow is pressed, the walkin cat moves down) 2. when each cat is clicked, it says something. 3. when space is pressed, both cats go back to origin
