HTML5 Crash on level load

Questions
#1

This only happens for HTML5 and Android. PC builds work fine:

RuntimeError: abort(Assertion failed: parent_id, at: …/src/gameobject/gameobject.cpp,1186,CollectionSpawnFromDescInternal). Build with -s ASSERTIONS=1 for more info.

I still haven’t been able to figure out how to build the engine and replace the dmEngine.exe properly yet otherwise I could show the full assertion list. When I build the engine the build succeeds when I don’t run the tests but I don’t see a dmEngine.exe anywhere in order to swap out the engine executable for the full build assertions.

#2

Which version of Defold are you using?

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#3

Using 1.2.172

#4

Hmm I look higher up on the crash log and see a warning:

WebGL warning: getParameter: pname: Invalid enum value MAX_ELEMENTS_VERTICES UndiscoveredTerritories_wasm.js:1:145932

WebGL warning: getParameter: pname: Invalid enum value MAX_ELEMENTS_INDICES UndiscoveredTerritories_wasm.js:1:145932

This is after I added new models to the game. Is there some way to increase these values?

#5

Those are warnings. And the warning is about the enum itself, not the actual setting. You can ignore this.

#6

You won’t find “dmEngine.exe”, since you compile for either html5 or Android. They’re called .js/.wasm for html5 or .so for Android.

You’ll find them under e.g. tmp/dynamo_home/bin/wasm-web.
Copy the changed files to the correct counterparts in your build or bundle folder, then refresh the page.

For Android/iOS, we have the ./scripts/mobile/android-repack.sh/./scripts/mobile/io-repack.sh to help with that, to make the process/resigning easier.

Also, by using adb logcat you can see the log of your process on your phone.

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#7

I posted a new thread relating to trying to compile Defold here: Attempting to build wasm-web version of engine I am able to build the Desktop version of the engine without issue but am having issues building the wasm-web version. I think if I can fix the bug there it will be closer to working on Android since the behavior on both platforms is the same whereas Desktop works without issue.

#8

I suppose that you have collections with the same “default” name:

image
image.png699×541 3.94 KB

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#9

Thanks so much! :heart_eyes_cat: I was using a default collection name for one of my collections and renaming it fixed it :smiley: I was checking all my objects based on the error but hadn’t thought to look at the master collection names :open_mouth:

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#10

Hmm it worked one time. However, after I tried building for Android I got a different error (resource missing.) I fixed this then built HTML5 again and now the error has returned. I checked all my collections and they have different names… Not sure what’s causing it, I’m trying to build defold since I need a version of the wasm-web engine with -s ASSERTS=1 enabled to see the full error message. I’m not even sure that will explain it, but at least I’ll have all the info possible.

EDIT: I figured out the issue. After removing all factories which use 3D Collada models the HTML5 build works fine. However, it does work with meshes. Is this a known bug, or is there some max tri count for Collada models on HTML5 I don’t know about?

EDIT2: I spoke too soon, I’m having issues w/ meshes now. However, I did have them working in HTML5/Android earlier in the project and nothing has changed regarding those objects since then since I moved over to Collada based models…

EDIT3: I’ve finally deduced the reason for the crash. I had previously been doing the shader operation “var_texcoord0 = texcoord0 * 2;” in my code to scale the texture. However, after changing this to simply “var_texcoord0 = texcoord0;” the game builds and plays on HTML5 again! Does anyone know if there’s a way to multiply a variable in a shader for HTML5/Android builds?

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#11

Make sure it’s valid GLSL. Multiplying with 2 is unlikely to be valid since 2 is an integer constant and vec2s are floats. Try multiplying by 2.0. Some shader compilers are pickier than others.

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