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How to Make a Game Like Candy Crush with SpriteKit and Swift: Part 3

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Updated for Xcode 9.3 and Swift 4.1. Learn how to make a Candy Crush-like mobile game, using Swift and SpriteKit to animate and build the logic of your game.

This is a companion discussion topic for the original entry at https://www.raywenderlich.com/58-how-to-make-a-game-like-candy-crush-with-spritekit-and-swift-part-3
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Great tutorial! Learned a lot. Code worked great.

1 Like
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I see we still have this error when trying to run on the simulators. It runs, but when you try to move a tile this happens.
failed assertion: inChannelsPerFrame >= 4

It runs fine on an attached device

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@kevcol Can you please help with this when you get a chance? Thank you - much appreciated! :]

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Hi @shanghaitimes, are you still having this problem?

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Hi there - many thanks for this great tutorial!

i have the same error as shanghaitimes…
on my iPhone 7 everything works, but in the Simulator i always got this error as soon i want to swipe.
I have the newest Mac OS and Xcode.

many thanks for your hints to solve this issue!

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is there a way to access the cookie type when in animateMatchedCookies?

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i still have this issue, does anybody have a solution for that?

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I also notice that the game locks up after it plays the last level. Never reverts back to the first level.

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Hi @ma2412! I am not seeing that error when running the downloadable materials “CookieCrunchPart3-Final” (linked from the top of the tutorial and here: https://koenig-media.raywenderlich.com/uploads/2018/04/CookieCrunchPart3-1.zip).

Can you give that project a spin and let me know if you still see the error?

If the downloadable project runs error-free, you can compare that to your project. Or send me your project as a zip file and I’d be happy to take a look.

Cheers,
Kevin

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Hi @dpalme! I am not seeing that error when running the downloadable materials “CookieCrunchPart3-Final” (linked from the top of the tutorial and here: https://koenig-media.raywenderlich.com/uploads/2018/04/CookieCrunchPart3-1.zip).

Can you give that project a spin and let me know if you still see the error? (You can give yourself more moves per level by editing “moves” in the level json – that Level_4 is a killer!)

If the downloadable project runs error-free, you can compare that to your project. Or send me your project as a zip file and I’d be happy to take a look.

Cheers,
Kevin

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Hi @dpalme! Yes, you can access cookie.cookieType. For example, you can add a print statement after if let sprite = cookie.sprite to print out the cookie type to your console

print(cookie.cookieType)

cookieType
cookieType1674Ă—1258 341 KB

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Hi Kevin,

thanks for your reply.
The error still accours, but only in the simulator and not on real devices.
Nevermind i solved it, as is commented all sound out - then it will work.

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Hi Kevin,

i want to add some special chains like a “T”-shape to get a small bomb like in other 3-match-games.

As i think i have to do:

  • define a bomb in cookie-swift (spriteNames)
  • in chain.swift: add enum case for the bomb
  • in level.swift: add a new private func where i loop something to detect my T-shape
  • in func removeCookies: set one cookie (those one i have swapped to) NOT to nil and replace it with the bomb

am i missing something?

many thanks for your help or your hints to get me in the right direction!

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Yep still get the same thing with the final zip. The only thing I changed in the level 3 and 4 was the number of attempts allowed.

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I’ll download a fresh copy and try it again just to make sure.

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I did notice in the console that it kept printing - “possible swaps: []”

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Hmm, OK. Which simulated device were you using?

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I tried it in the sim and on my phone, 7 & 8 and a 6 (actual phone)

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I can change the value of the CookieGrid from one Cookie type to another, but how can i also change the sprite of the cookie to the new picture within level.swift?
many thanks!