# Trigonometry for Game Programming \[Sprite Kit Version\]: Part 2/2

**URL:** <https://forums.kodeco.com/t/trigonometry-for-game-programming-sprite-kit-version-part-2-2/7124>\
**Category:** 🎓 Courses & Articles\
**Created:** [March 4, 2016, 2:29pm UTC](https://forums.kodeco.com/t/trigonometry-for-game-programming-sprite-kit-version-part-2-2/7124 "2016-03-04T14:29:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![tdahbura](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/tdahbura/32/59518_2.png) [@tdahbura](https://forums.kodeco.com/u/tdahbura)\
**Post date:** [March 4, 2016, 2:29pm UTC](https://forums.kodeco.com/t/trigonometry-for-game-programming-sprite-kit-version-part-2-2/7124/1 "2016-03-04T14:29:07Z")

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Learn about trigonometry functions like sin, cos, and tan while you make a fun iOS space game!

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 This is a companion discussion topic for the original entry at [https://www.raywenderlich.com/2547-trigonometry-for-game-programming-sprite-kit-version-part-2-2](https://www.raywenderlich.com/2547-trigonometry-for-game-programming-sprite-kit-version-part-2-2)

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**Author:** ![tam241992](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/tam241992/32/66164_2.png) [@tam241992](https://forums.kodeco.com/u/tam241992)\
**Post date:** [June 2, 2017, 11:01pm UTC](https://forums.kodeco.com/t/trigonometry-for-game-programming-sprite-kit-version-part-2-2/7124/2 "2017-06-02T23:01:28Z")

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[https://www.raywenderlich.com/90521/trigonometry-games-sprite-kit-swift-tutorial-part-2](https://www.raywenderlich.com/90521/trigonometry-games-sprite-kit-swift-tutorial-part-2)  
How can I use the loop to add the monsters to know that there are blood bars as each object, is different when i shoot monster then each object will lose blood, Xcode 8.3.2.  
Thank you.

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**Author:** ![shogunkaramazov](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/shogunkaramazov/32/108826_2.png) [@shogunkaramazov](https://forums.kodeco.com/u/shogunkaramazov)\
**Post date:** [November 14, 2017, 3:15pm UTC](https://forums.kodeco.com/t/trigonometry-for-game-programming-sprite-kit-version-part-2-2/7124/3 "2017-11-14T15:15:08Z")

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This tutorial is more than six months old so questions are no longer supported at the moment for it. We will update it as soon as possible. Thank you! :]

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**Author:** ![shogunkaramazov](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/shogunkaramazov/32/108826_2.png) [@shogunkaramazov](https://forums.kodeco.com/u/shogunkaramazov)\
**Post date:** [November 14, 2017, 3:15pm UTC](https://forums.kodeco.com/t/trigonometry-for-game-programming-sprite-kit-version-part-2-2/7124/4 "2017-11-14T15:15:11Z")

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Closed on November 14, 2017, 3:15pm UTC