mikecargal

mikecargal

Apple Game Frameworks and Technologies: Chapter 5 question

Title: Name of book: Apple Game Frameworks and Technologies (Chapter 5 “die” animation)

Not an errata that I can tell so far…

I’m at the point in Chapter 5 of changing to the “die” animation on gameOver().

For some reason, the display does not change to the “die” png.

I’ve placed print() debugging statements in the player::die() method

    func die() {
        print("Player::die()")
        guard let dieTextures = dieTextures else {
            preconditionFailure("Could not find die textures!")
        }
        print("removeAction(forKey: \"walk\"")
        removeAction(forKey: "walk")
        
        print("dieTextures=>>\(dieTextures)<<")
        print("startAnimation(name:\"die\"")
        
        startAnimation(textures: dieTextures, speed: 0.25,
                       name: "die",
                       count: 0, resize: true, restore: true)
    }

and I get the following in the debug console:

player hit collectible
player hit collectible
collectible hit foreground
Player::die()
removeAction(forKey: "walk"
dieTextures=>>[<SKTexture> 'blob-die_0' (186 x 196)]<<
startAnimation(name:"die"

So, I know:

  • the die() method is being called.
  • the dieTextures has a single entry named “blob-die_0” (dimensions 186x196 on iPhone 8 simulator (and I see the 3x dimensions if I run on another simulator), so it really seems like it’s finding the png assets. (I followed the link in the assets, and it opened a directory that has the “sad blob” images.)

But this is what the screen looks like (you can even see the rectangle missing from removing the physics attributes from the drop

I’ve thought about comparing to the “end” project but there’s a lot of stuff left in the chapter before I get to the “end” state (so not applicable to current state). (I did start from my own previous project state (not the “start” project file. I may re-work my way through chapter 5 to this point on that project . But, I generally find that I learn a lot be trying to debug whatever I did wrong. In this case I’ve read, re-read, re-compared the steps in chapter 5 until I’m cross-eyed. (The changes for the labels, and everything up to this are all “working”)

So, as a question… does anyone have a suggestion as to where I should look. (I’m in that debugging state, where there’s so little involved in the changes, that I can’t see what I may have missed). Hoping someone has been here and can point me in the right direction.

Oh yeah… feel free to tell me “you’re on your own. Your mess, you clean it up” :slight_smile:

Marked As Solved

mikecargal

mikecargal

Mystery solved…

It was “Code Completion” in the SpriteKitHelper::startAnimation(...) { ... SKAction.animate(...) ...} with a withNormalTextures: instead of with:

(How the detective missed that so many times, remains a mystery. He’s on desk duty pending an investigation into his competency.)

Also Liked

mikecargal

mikecargal

I am enjoying the book. I wasn’t really expecting anyone to find my typo for me. (In hindsight, probably biggest “surprise” was that the mistake was something I got wrong so far back and didn’t bit me until this part.

And, based on your endorsement, the detective is back “on the beat”

mikecargal

mikecargal

Here’s a probably hint if anyone is interesting in tossing me a hint.

I went ahead with the code to override the update(_ currentTime: TimeInterval) method, and I do indeed see the level going wild, but I’m not bombarded with gloop drops. (I’m pretty sure that points to what I missed before, but I need to call it a day)

If I find it tomorrow, I’ll update.

Paradox927

Paradox927

Author and Editor at PragProg

Hey, Mike.

Sorry for the delay in getting back to you. Usually, I’m a lot faster at responding to these posts, but this week has proven to be quite the challenge. It seems time was not on my side. :roll_eyes:

On the plus side, it looks like you got everything working—and, for what it’s worth, I think you should keep that detective on the payroll. Everyone deserves a second chance. :blush: :grimacing:

Have a great weekend. Hope you’re enjoying the book.

Where Next?

Popular Pragmatic Bookshelf topics Top

abtin
page 20: … protoc command… I had to additionally run the following go get commands in order to be able to compile protobuf code using go...
New
telemachus
Python Testing With Pytest - Chapter 2, warnings for “unregistered custom marks” While running the smoke tests in Chapter 2, I get these...
New
Mmm
Hi, build fails on: bracket-lib = “~0.8.1” when running on Mac Mini M1 Rust version 1.5.0: Compiling winit v0.22.2 error[E0308]: mi...
New
raul
Page 28: It implements io.ReaderAt on the store type. Sorry if it’s a dumb question but was the io.ReaderAt supposed to be io.ReadAt? ...
New
swlaschin
The book has the same “Problem space/Solution space” diagram on page 18 as is on page 17. The correct Problem/Solution space diagrams ar...
New
brian-m-ops
#book-python-testing-with-pytest-second-edition Hi. Thanks for writing the book. I am just learning so this might just of been an issue ...
New
patoncrispy
I’m new to Rust and am using this book to learn more as well as to feed my interest in game dev. I’ve just finished the flappy dragon exa...
New
Keton
When running the program in chapter 8, “Implementing Combat”, the printout Health before attack was never printed so I assumed something ...
New
gorkaio
root_layout: {PentoWeb.LayoutView, :root}, This results in the following following error: no “root” html template defined for PentoWeb...
New
mcpierce
@mfazio23 I’ve applied the changes from Chapter 5 of the book and everything builds correctly and runs. But, when I try to start a game,...
New

Other popular topics Top

AstonJ
If it’s a mechanical keyboard, which switches do you have? Would you recommend it? Why? What will your next keyboard be? Pics always w...
New
PragmaticBookshelf
Free and open source software is the default choice for the technologies that run our world, and it’s built and maintained by people like...
New
PragmaticBookshelf
Ruby, Io, Prolog, Scala, Erlang, Clojure, Haskell. With Seven Languages in Seven Weeks, by Bruce A. Tate, you’ll go beyond the syntax—and...
New
PragmaticBookshelf
From finance to artificial intelligence, genetic algorithms are a powerful tool with a wide array of applications. But you don't need an ...
New
New
AstonJ
Do the test and post your score :nerd_face: :keyboard: If possible, please add info such as the keyboard you’re using, the layout (Qw...
New
Exadra37
Oh just spent so much time on this to discover now that RancherOS is in end of life but Rancher is refusing to mark the Github repo as su...
New
New
NewsBot
Node.js v22.14.0 has been released. Link: Release 2025-02-11, Version 22.14.0 'Jod' (LTS), @aduh95 · nodejs/node · GitHub
New
PragmaticBookshelf
Escape callback hell and ship fast, clean code that reads as smoothly as it runs. Squash bugs and stamp out memory leaks with an intuitiv...
New

Sub Categories: