Consider the code below –

x = 200
y = 200
hspeed = 2
vspeed = 2
ball = Shape.AddEllipse(x,y)
loop = 1

while loop = 1
x = x + hspeed
y = y + vspeed
Shape.Move(ball, x, y)
??????
endwhile

Your task is to add some code which will make the ball bounce off the side of the screen. You will need to consider –

• using if statements
• using GraphicsWindow.width and GraphicsWindow.height
• change hspeed and vspeed to be negative or positive depending on the direction
• when you multiply a number by -1 it will swap from positive to negative and visa versa.

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