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

brianokken
Many tasks_proj/tests directories exist in chapters 2, 3, 5 that have tests that use the custom markers smoke and get, which are not decl...
New
simonpeter
When I try the command to create a pair of migration files I get an error. user=&gt; (create-migration "guestbook") Execution error (Ill...
New
mikecargal
Title: Hands-On Rust (Chap 8 (Adding a Heads Up Display) It looks like ​.with_simple_console_no_bg​(SCREEN_WIDTH*2, SCREEN_HEIGHT*2...
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
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
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
jgchristopher
“The ProductLive.Index template calls a helper function, live_component/3, that in turn calls on the modal component. ” Excerpt From: Br...
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
New
dachristenson
I just bought this book to learn about Android development, and I’m already running into a major issue in Ch. 1, p. 20: “Update activity...
New

Other popular topics Top

PragmaticBookshelf
Stop developing web apps with yesterday’s tools. Today, developers are increasingly adopting Clojure as a web-development platform. See f...
New
New
AstonJ
You might be thinking we should just ask who’s not using VSCode :joy: however there are some new additions in the space that might give V...
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
DevotionGeo
The V Programming Language Simple language for building maintainable programs V is already mentioned couple of times in the forum, but I...
New
AstonJ
Continuing the discussion from Thinking about learning Crystal, let’s discuss - I was wondering which languages don’t GC - maybe we can c...
New
PragmaticBookshelf
Create efficient, elegant software tests in pytest, Python's most powerful testing framework. Brian Okken @brianokken Edited by Kat...
New
DevotionGeo
I have always used antique keyboards like Cherry MX 1800 or Cherry MX 8100 and almost always have modified the switches in some way, like...
New
First poster: bot
zig/http.zig at 7cf2cbb33ef34c1d211135f56d30fe23b6cacd42 · ziglang/zig. General-purpose programming language and toolchain for maintaini...
New
xiji2646-netizen
Woke up to this today: Claude Code’s complete source code exposed via npm source map. Not a snippet. All 512,000 lines. 1,900 TypeScript ...
New

Sub Categories: