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

jesse050717
Title: Web Development with Clojure, Third Edition, pg 116 Hi - I just started chapter 5 and I am stuck on page 116 while trying to star...
New
edruder
I thought that there might be interest in using the book with Rails 6.1 and Ruby 2.7.2. I’ll note what I needed to do differently here. ...
New
mikecargal
Title: Hands-on Rust: question about get_component (page 295) (feel free to respond. “You dug you’re own hole… good luck”) I have somet...
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
rmurray10127
Title: Intuitive Python: docker run… denied error (page 2) Attempted to run the docker command in both CLI and Powershell PS C:\Users\r...
New
leonW
I ran this command after installing the sample application: $ cards add do something --owner Brian And got a file not found error: Fil...
New
brunogirin
When installing Cards as an editable package, I get the following error: ERROR: File “setup.py” not found. Directory cannot be installe...
New
brunogirin
When running tox for the first time, I got the following error: ERROR: InterpreterNotFound: python3.10 I realised that I was running ...
New
s2k
Hi all, currently I wonder how the Tailwind colours work (or don’t work). For example, in app/views/layouts/application.html.erb I have...
New
SlowburnAZ
Getting an error when installing the dependencies at the start of this chapter: could not compile dependency :exla, "mix compile" failed...
New

Other popular topics Top

PragmaticBookshelf
Learn from the award-winning programming series that inspired the Elixir language, and go on a step-by-step journey through the most impo...
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
AstonJ
Or looking forward to? :nerd_face:
503 15149 280
New
New
PragmaticBookshelf
Use WebRTC to build web applications that stream media and data in real time directly from one user to another, all in the browser. ...
New
AstonJ
If you get Can't find emacs in your PATH when trying to install Doom Emacs on your Mac you… just… need to install Emacs first! :lol: bre...
New
New
New
PragmaticBookshelf
A masterclass in the fundamentals and principles of functional programming. Minh Quang Tran The Art of Functional Programming is a ma...
New
PragmaticBookshelf
A concise guide to MySQL 9 database administration, covering fundamental concepts, techniques, and best practices. Neil Smyth MySQL...
New

Sub Categories: