# Questions **URL:** https://forum.defold.com/c/questions/5.md [Latest](https://forum.defold.com/latest.md) · [Categories](https://forum.defold.com/categories.md) --- ## [About the Questions category](https://forum.defold.com/t/about-the-questions-category/19)
**Author:** [@sicher](https://forum.defold.com/u/sicher)\ **Replies:** 0\ **Last updated:** [March 24, 2015, 12:43pm UTC](https://forum.defold.com/t/about-the-questions-category/19 "2015-03-24T12:43:13Z")
If you have any questions about Defold, you’ve come to the right place. Before asking for help we’d like to ask you to please take a moment to read the documentation and the FAQ: Defold documentation Frequently asked q… --- ## [WARNING:PHYSICS: Ray had 0 length when ray casting after applying physics scale, ignoring request](https://forum.defold.com/t/warning-ray-had-0-length-when-ray-casting-after-applying-physics-scale-ignoring-request/83343)
**Author:** [@John](https://forum.defold.com/u/John)\ **Replies:** 0\ **Last updated:** [October 11, 2026, 10:31am UTC](https://forum.defold.com/t/warning-ray-had-0-length-when-ray-casting-after-applying-physics-scale-ignoring-request/83343 "2026-10-11T10:31:01Z")
It’s a simple scene with a camera (Orthographic Projection) and an object with sprite and colision components. Just wanna make a click on the go and and get some info. So , I have this error: WARNING:PHYSICS: Ray had… --- ## [Is the GameDistribution extension working - resolved](https://forum.defold.com/t/is-the-gamedistribution-extension-working-resolved/83341)
**Author:** [@Alex\_X](https://forum.defold.com/u/Alex_X)\ **Replies:** 0\ **Last updated:** [October 10, 2026, 3:43pm UTC](https://forum.defold.com/t/is-the-gamedistribution-extension-working-resolved/83341 "2026-10-10T15:43:19Z")
(topic deleted by author) --- ## [How to manage different platform SDKs in a single project?](https://forum.defold.com/t/how-to-manage-different-platform-sdks-in-a-single-project/83337)
**Author:** [@Vallo](https://forum.defold.com/u/Vallo)\ **Replies:** 1\ **Last updated:** [October 10, 2026, 8:37am UTC](https://forum.defold.com/t/how-to-manage-different-platform-sdks-in-a-single-project/83337 "2026-10-10T08:37:35Z")
Hi everyone! I’m developing a game that I’d like to publish on several platforms, such as Google Play, the App Store, Wavedash, and itch.io. Each platform has its own SDK that I need to integrate to take advantage of i… --- ## [Why collision shape cannot set position at runtime?](https://forum.defold.com/t/why-collision-shape-cannot-set-position-at-runtime/83335)
**Author:** [@bwf2zxjpy2s](https://forum.defold.com/u/bwf2zxjpy2s)\ **Replies:** 0\ **Last updated:** [October 9, 2026, 5:42pm UTC](https://forum.defold.com/t/why-collision-shape-cannot-set-position-at-runtime/83335 "2026-10-09T17:42:21Z")
I try to modify the collision capsule for my player at runtime by reading data from properties and then shift the position up to make it match the ground. the diameter and height work fine but seem like position is not a… --- ## [Why are RTF color tags multiplied with base color?](https://forum.defold.com/t/why-are-rtf-color-tags-multiplied-with-base-color/83331)
**Author:** [@MINIBITS](https://forum.defold.com/u/MINIBITS)\ **Replies:** 3\ **Last updated:** [October 9, 2026, 2:41pm UTC](https://forum.defold.com/t/why-are-rtf-color-tags-multiplied-with-base-color/83331 "2026-10-09T14:41:27Z")
What’s the reason a color tag in an RTF text gets multiplied with the label’s base color? In my game all labels should be output with black #000000ff (base color) by default, and every now and then certain words get high… --- ## [Ingame debug / imgui menus - how to organise debug code?](https://forum.defold.com/t/ingame-debug-imgui-menus-how-to-organise-debug-code/83327)
**Author:** [@Mathias](https://forum.defold.com/u/Mathias)\ **Replies:** 3\ **Last updated:** [October 9, 2026, 8:54am UTC](https://forum.defold.com/t/ingame-debug-imgui-menus-how-to-organise-debug-code/83327 "2026-10-09T08:54:35Z")
Hi, In my current project (Rocket Rabbit, started for the gamejam but didnt submit it because it was just not finished in any way..) I started for the first time to use Dear Imgui extension to add debug menus to the gam… --- ## [Editor preference to opt in to beta updates](https://forum.defold.com/t/editor-preference-to-opt-in-to-beta-updates/83329)
**Author:** [@ekt](https://forum.defold.com/u/ekt)\ **Replies:** 3\ **Last updated:** [October 8, 2026, 9:08am UTC](https://forum.defold.com/t/editor-preference-to-opt-in-to-beta-updates/83329 "2026-10-08T09:08:36Z")
ciao everybody I really like how the editor handles updates with the clickable “Updates Available” label. It would be great to have the same experience for pre-releases. I know the channel can be changed by editing the… --- ## [Making sense of variables](https://forum.defold.com/t/making-sense-of-variables/83330)
**Author:** [@svalinn85](https://forum.defold.com/u/svalinn85)\ **Replies:** 5\ **Last updated:** [October 7, 2026, 6:44pm UTC](https://forum.defold.com/t/making-sense-of-variables/83330 "2026-10-07T18:44:48Z")
Having just started with Lua and Defold, coming from other engines like Unity and Godot, one of the first things that really confused me was how Defold and Lua handle variables. Mainly, I’m referring to the fact that va… --- ## [Is improving convex hull shapes on the roadmap?](https://forum.defold.com/t/is-improving-convex-hull-shapes-on-the-roadmap/83301)
**Author:** [@schlista](https://forum.defold.com/u/schlista)\ **Replies:** 1\ **Last updated:** [October 6, 2026, 8:26am UTC](https://forum.defold.com/t/is-improving-convex-hull-shapes-on-the-roadmap/83301 "2026-10-06T08:26:44Z")
Curious what is the future for physic shapes in defold? Convex hull as currently implemented is limiting. Where you have to make several if you want to closely trace a shape. Why can’t we create concave shapes and let… --- ## [Issue deploying to Wavedash](https://forum.defold.com/t/issue-deploying-to-wavedash/83303)
**Author:** [@benjames171](https://forum.defold.com/u/benjames171)\ **Replies:** 2\ **Last updated:** [October 3, 2026, 12:46pm UTC](https://forum.defold.com/t/issue-deploying-to-wavedash/83303 "2026-10-03T12:46:04Z")
After uploading an HTML5 build to Wavedash I get this error in the console: Uncaught ReferenceError: EngineLoader is not defined \ https://mx73ryzq088w408r5s1ad37thn8fg0m6-04c67a18-e7604f98.builds.wavedash… --- ## [GUI Text Elements with Rich Text Sprites](https://forum.defold.com/t/gui-text-elements-with-rich-text-sprites/83296)
**Author:** [@Tabasco](https://forum.defold.com/u/Tabasco)\ **Replies:** 7\ **Last updated:** [October 2, 2026, 4:16pm UTC](https://forum.defold.com/t/gui-text-elements-with-rich-text-sprites/83296 "2026-10-02T16:16:46Z")
Hello I am wondering how the tags in GUI text elements work. I have a text element with “\Rune: ” The red text shows up, but the image does not. I’ve also tried with an atlas and an animation. and I ca… --- ## [Is it possible to make 2D sprites deform and stretch?](https://forum.defold.com/t/is-it-possible-to-make-2d-sprites-deform-and-stretch/83286)
**Author:** [@Hax](https://forum.defold.com/u/Hax)\ **Replies:** 5\ **Last updated:** [September 30, 2026, 9:52pm UTC](https://forum.defold.com/t/is-it-possible-to-make-2d-sprites-deform-and-stretch/83286 "2026-09-30T21:52:30Z")
Hello all! I’m a rusty game developer that hasn’t touched an engine in about a year. I used Unreal Engine for about 3 years, but after the lag, bad optimization, shipping unfinished features as “finished” (Lumen) I’m don… --- ## [By Game speed acceleration, particles applied excessive Drag](https://forum.defold.com/t/by-game-speed-acceleration-particles-applied-excessive-drag/83252)
**Author:** [@vtvitzh](https://forum.defold.com/u/vtvitzh)\ **Replies:** 1\ **Last updated:** [September 30, 2026, 6:01pm UTC](https://forum.defold.com/t/by-game-speed-acceleration-particles-applied-excessive-drag/83252 "2026-09-30T18:01:01Z")
When the game speed is increased, particles with Drag applied will look different than usual. Is this intended behavior? Here is the reproduction project. --- ## [Do you see any lack of game analytics SDKs for Defold?](https://forum.defold.com/t/do-you-see-any-lack-of-game-analytics-sdks-for-defold/83281)
**Author:** [@gamedevshrimp](https://forum.defold.com/u/gamedevshrimp)\ **Replies:** 2\ **Last updated:** [September 30, 2026, 10:47am UTC](https://forum.defold.com/t/do-you-see-any-lack-of-game-analytics-sdks-for-defold/83281 "2026-09-30T10:47:25Z")
Hi guys! Today I want to ask about Game analytics extensions. I noticed that there is not a wide selection for the Defold. The last update of Google analytics was in 2019 and this extension uses an old ID format. Corre… --- ## [Nakama server hosting](https://forum.defold.com/t/nakama-server-hosting/83270)
**Author:** [@PendragonNL](https://forum.defold.com/u/PendragonNL)\ **Replies:** 6\ **Last updated:** [September 28, 2026, 5:53pm UTC](https://forum.defold.com/t/nakama-server-hosting/83270 "2026-09-28T17:53:36Z")
so for the gamejam,. i need to either run a computer with the server.. or rent a VM for a little in order to host the server for the jam periode. Keep a computer running is nog an option so are there any tips on cheap… --- ## [Bitmap / df fonts scaling differently in labels](https://forum.defold.com/t/bitmap-df-fonts-scaling-differently-in-labels/83266)
**Author:** [@benjames171](https://forum.defold.com/u/benjames171)\ **Replies:** 1\ **Last updated:** [September 27, 2026, 7:30pm UTC](https://forum.defold.com/t/bitmap-df-fonts-scaling-differently-in-labels/83266 "2026-09-27T19:30:40Z")
Labels appear to scale differently depending on the type of font used. Only happens after the window is resized. Is this intentional or an issue? --- ## [Defold doesn't see some symbols in a font](https://forum.defold.com/t/defold-doesnt-see-some-symbols-in-a-font/83253)
**Author:** [@Frede](https://forum.defold.com/u/Frede)\ **Replies:** 2\ **Last updated:** [September 21, 2026, 4:04pm UTC](https://forum.defold.com/t/defold-doesnt-see-some-symbols-in-a-font/83253 "2026-09-21T16:04:51Z")
I wanted to add a Cyrillic font but defold can’t see some symbols (for example punctuation marks). I’ve downloaded it from this website: https://fontsource.org/ . I can see in the preview on this website that it has all … --- ## [Ambient light component in a collection loaded with a collectionproxy](https://forum.defold.com/t/ambient-light-component-in-a-collection-loaded-with-a-collectionproxy/83254)
**Author:** [@totebo](https://forum.defold.com/u/totebo)\ **Replies:** 4\ **Last updated:** [September 21, 2026, 11:36am UTC](https://forum.defold.com/t/ambient-light-component-in-a-collection-loaded-with-a-collectionproxy/83254 "2026-09-21T11:36:31Z")
Hello! I’ve added an ambient light component to my game and I bumped into an issue. It seems when an ambient light component is inside a collection loaded with a collectionproxy it doesn’t work and the models appear blac… --- ## [Unable to install iOS app to my phone via Xcode and free dev account (Solved)](https://forum.defold.com/t/unable-to-install-ios-app-to-my-phone-via-xcode-and-free-dev-account-solved/66623)
**Author:** [@russelkgd](https://forum.defold.com/u/russelkgd)\ **Replies:** 8\ **Last updated:** [September 20, 2026, 11:31pm UTC](https://forum.defold.com/t/unable-to-install-ios-app-to-my-phone-via-xcode-and-free-dev-account-solved/66623 "2026-09-20T23:31:00Z")
Hi guys. So i followed the guide about developing for ios and got my provision profile and free dev account. I successfully run test application from Xcode and granted permission in general settings in my phone. After th… --- ## [CONSTANT\_TYPE\_TIME and pausing the game](https://forum.defold.com/t/constant-type-time-and-pausing-the-game/83251)
**Author:** [@Piro](https://forum.defold.com/u/Piro)\ **Replies:** 0\ **Last updated:** [September 20, 2026, 6:53pm UTC](https://forum.defold.com/t/constant-type-time-and-pausing-the-game/83251 "2026-09-20T18:53:17Z")
I switched to using the new CONSTANT\_TYPE\_TIME in my shader, but now when I try to pause the game by using the set\_time\_step, the shader keeps doing its thing. I realise this is because of it not being part of the colle… --- ## [How do you use LuaCATS type annotations in Defold's built-in script editor?](https://forum.defold.com/t/how-do-you-use-luacats-type-annotations-in-defolds-built-in-script-editor/83249)
**Author:** [@feebleflame](https://forum.defold.com/u/feebleflame)\ **Replies:** 6\ **Last updated:** [September 20, 2026, 7:57am UTC](https://forum.defold.com/t/how-do-you-use-luacats-type-annotations-in-defolds-built-in-script-editor/83249 "2026-09-20T07:57:45Z")
Hello, I’ve noticed that type annotations (such as ---@param and ---@return) work correctly in Defold’s built-in script editor, but I haven’t been able to find any official Defold documentation that explicitly discusses… --- ## [Preferring Collection over Game Object?](https://forum.defold.com/t/preferring-collection-over-game-object/80802)
**Author:** [@Hunter\_Loftis](https://forum.defold.com/u/Hunter_Loftis)\ **Replies:** 16\ **Last updated:** [September 19, 2026, 9:14am UTC](https://forum.defold.com/t/preferring-collection-over-game-object/80802 "2026-09-19T09:14:22Z")
After a few weeks of hacking around, I’m still quite new to Defold so I definitely don’t have a complete perspective on all its systems. But I’ve noticed a pattern in my usage where I’ve started defaulting to using Colle… --- ## [Atlas mapping the wrong normals to sprites](https://forum.defold.com/t/atlas-mapping-the-wrong-normals-to-sprites/83243)
**Author:** [@RanarhEadha](https://forum.defold.com/u/RanarhEadha)\ **Replies:** 3\ **Last updated:** [September 18, 2026, 7:46pm UTC](https://forum.defold.com/t/atlas-mapping-the-wrong-normals-to-sprites/83243 "2026-09-18T19:46:58Z")
I was excited to try procgen and wanted to do a street of buildings generated from a set of sprites and illuminate them with point lights. It goes well until this happens: Some (but not all) my sprites receive the wrong… --- ## [Issue turning a square sprite into a circle using shaders](https://forum.defold.com/t/issue-turning-a-square-sprite-into-a-circle-using-shaders/83236)
**Author:** [@Ohm](https://forum.defold.com/u/Ohm)\ **Replies:** 8\ **Last updated:** [September 17, 2026, 1:46pm UTC](https://forum.defold.com/t/issue-turning-a-square-sprite-into-a-circle-using-shaders/83236 "2026-09-17T13:46:49Z")
I have a 64 x 64 pixel white square that I’m trying to clip with a shader so I have a nice smooth edged circle. It’s a sprite. I can’t however, get the alpha for work on the edges. This is what I’m trying to make, minu… --- ## [Rendering Technique Defold Uses for Web](https://forum.defold.com/t/rendering-technique-defold-uses-for-web/75257)
**Author:** [@Ahmutkadim](https://forum.defold.com/u/Ahmutkadim)\ **Replies:** 5\ **Last updated:** [September 17, 2026, 7:01am UTC](https://forum.defold.com/t/rendering-technique-defold-uses-for-web/75257 "2026-09-17T07:01:43Z")
I just wonder which rendering technique is used for web exports. If it is webgl, which version of it is used and whether it can be configured while exporting. --- ## [How to create uneven 3D terrain with static collision](https://forum.defold.com/t/how-to-create-uneven-3d-terrain-with-static-collision/83234)
**Author:** [@Morrocoyo64](https://forum.defold.com/u/Morrocoyo64)\ **Replies:** 3\ **Last updated:** [September 14, 2026, 7:23pm UTC](https://forum.defold.com/t/how-to-create-uneven-3d-terrain-with-static-collision/83234 "2026-09-14T19:23:45Z")
Hello, I am new to Defold and was wondering if anyone knows how to create natural uneven terrain that can be used as walkable ground (like an area with hills). Is there a way to create collision object shapes out of mesh… --- ## [How to use go.set() to set a vertex attribute of type Mat3?](https://forum.defold.com/t/how-to-use-go-set-to-set-a-vertex-attribute-of-type-mat3/83174)
**Author:** [@vinicius](https://forum.defold.com/u/vinicius)\ **Replies:** 1\ **Last updated:** [September 14, 2026, 2:09pm UTC](https://forum.defold.com/t/how-to-use-go-set-to-set-a-vertex-attribute-of-type-mat3/83174 "2026-09-14T14:09:48Z")
I am trying to pass a Texture Transform 2D to my vertex shader. I set the Vertex Attribute in the material, have it declared and used in the shader. But when I try to set it using go.set("#model", "transform2d", vmath.ma… --- ## [\[SOLVED\] Where to submit a PR for the API documentation?](https://forum.defold.com/t/solved-where-to-submit-a-pr-for-the-api-documentation/83231)
**Author:** [@gamedevshrimp](https://forum.defold.com/u/gamedevshrimp)\ **Replies:** 1\ **Last updated:** [September 13, 2026, 1:02pm UTC](https://forum.defold.com/t/solved-where-to-submit-a-pr-for-the-api-documentation/83231 "2026-09-13T13:02:00Z")
Hi guys! I am wondering where the repo is to make a PR to the documentation. I want to add information about the range here. I mean, RGB can be represented in the range 0–255 and 0–1, but gui.set\_color() uses the range… --- ## [It's possible to disable Gameobject collision? (SOLVED)](https://forum.defold.com/t/its-possible-to-disable-gameobject-collision-solved/24844)
**Author:** [@reydvires](https://forum.defold.com/u/reydvires)\ **Replies:** 5\ **Last updated:** [September 13, 2026, 2:13am UTC](https://forum.defold.com/t/its-possible-to-disable-gameobject-collision-solved/24844 "2026-09-13T02:13:33Z")
Sorry if my question is just solved in somewhere on the old thread, but since i cant find it then i’m ask again. Just like title, its possible in runtime? [Next page](https://forum.defold.com/c/questions/5.md?page=1)