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Newcomers AppGameKit Corner / Help with sprite collisions

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real
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Joined: 17th Mar 2019
Location:
Posted: 13th Apr 2019 18:45
I wanted to make a breakout game, the game is almost complete but I'm struggling to figure out how to code in side collisions for the game. I want to make it so that if the ball hits the left or right side of a block, it will change the horizontal direction (whether it goes right or left) but wont change the vertical direction (whether it goes up or down), and if the ball hits the top or bottom of the block its vertical direction will change, but its horizontal wont.
This is roughly what I have for those collisions right now, but the if statement is never true (the ball is never at the correct x position when it hits a block)



If anyone could help me out, it'd be greatly appreciated.
PSY
Valued Member
2
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Joined: 3rd Jul 2016
Location: Laniakea Supercluster
Posted: 13th Apr 2019 23:04 Edited at: 13th Apr 2019 23:05
Basically, you need to check 4 events ( above, below, left and right )
Pseudocode ( after collision has taken place ):




PSY


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Phaelax
DBPro Master
16
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Joined: 16th Apr 2003
Location: Metropia
Posted: 1st May 2019 06:53
Psy's method works, until the ball starts travelling at faster speeds. Corners could also be an issue. Awhile back, I came up with a swept line intersection method that addresses those issues and wrote a tutorial.

https://www.zimnox.com/resources/articles/tutorials/?ar=t006
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