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Building a pong game with circular obstacles in the middle.. need help

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brian grove
brian grove 2015-5-13
评论： brian grove 2015-5-21
So I have made a pong game that is shaped like an octagon and now I want to add two circular bumpers into the mix. I have the circles plotted but I am having trouble creating an if statement that properly defines the circle as a bumper. I need an if statement that will not let the ball enter the circle without triggering my bounce function. Heres the statement I have right now..
if (((newX < circleX2s) & (newX>circleX2s)) & ((newY < circleY2s)...
& (newY > circleY2s)))
plot(circleX2s,circleY2s,'b')
end
The 'plot' is just a test to see if it is registering when the ball enters the circle.
Any suggestions?
Thank you for your help.

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采纳的回答

Walter Roberson
Walter Roberson 2015-5-13
distsq1 = (Circle1CenterX - newX).^2 + (Circle1CenterY - newY).^2;
if distsq1 < Circle1Radius.^2
you are inside the circle
end

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