Advent Calendar 2025 by d954mas

[d954mas]

Christmas and New Year are a time for gifts.

I have been using Defold for many years, and during this time I collected many useful things: examples, code pieces, small libraries, and solutions that I use in my games.

This December, I want to share them and give something to the community.
I want to share my experience.
I hope this will be useful and interesting.

I prepared 14 gifts. This is an Advent calendar.
Every day, I will share something new

DAY 1.(defold-go-position-setter)
Fast way to set positions for thousand objects.
github
forum
video

DAY 2.(Localization)
Example how to use google sheet table for localization.
github
forum
video

DAY3.(Lua-class)
Simple oop. No metatables, table copying
github
forum
video

DAY4.(Bunnymark ECS Example)
github
forum
video

DAY5.(N28S)
github
forum
video

DAY6.(Virtual Pad Example)
github
forum
video

DAY7.(2D Game with Box2D and Tiled Level)
github
forum
video

DAY 8. Trim Images Script
A small python script to trim alpha from images
github
forum
video

DAY 9. Imgui Gizmo
Extension and demo project for testing ImGui Gizmo in Defold: object picking, transforms via gizmo, and a mini camera view manipulator.
github
forum
video

DAY 10. Html Utils
Small HTML5 extension that adds useful HTML utilities:
canvas focus handling, save/load data via localStorage , and mobile device detection.
github
forum
video

DAY 11. Screen Resizer
Minimal Defold extension + Lua module to resize the game view and show a menu
of preset sizes.
github
forum
video

DAY 12. Actions Animation Library
Small action/tween library for Defold: sequences, parallels, tweens for GO/GUI/table, waits, and function steps. I made this library to control animation timing myself, so I can skip or speed up actions. With Parallel/Sequence, it is much easier to build sequences than with go/gui animate callbacks.
github
forum
video

DAY 13. Gui Resizer
Project for automatic GUI scaling for portrait and landscape orientations with safe area support.
github
forum
video

DAY 14. Christmas 2025 3D Playground
A small Christmas-themed 3D demo in Defold. The main goal is to share my 3D experience and tool for Defold
github
forum
video

[d954mas]

DAY 1. GoPostionSetter Native Extension
-fast way to set go positions for thousand objects.

GitHub - d954mas/defold-go-position-setter

GoPositionSetter Native Extension

GoPositionSetter Native extension Fast way to update position for thousands of game objects. 30000 bunnies 53.71 fps [update_single] [go_position_setter] 30000 bunnies 67.69 fps Tested on my PC. What changed and why it’s faster function update(self, dt) bunnymark.update() local bunnies = bunnymark.bunnies for i=#bunnymark.bunnies,1,-1 do local bunny = bunnies[i] bunny.velocity = bunny.velocity - 1200 * dt local p = bunny.position p.y = p.y + bunny.velocity * dt if p.y < 50 th…

DAY 1. Advent Calendar 2025 by d954mas(go-position-setter)

[Pawel]

Awesome initative, thank you!

[selimanac]

@d954mas

I prepared 14 gifts. This is an Advent calendar.
Every day, I will share something new

New present every day! Thank you

[d954mas]

DAY 2. Localization example

This is example how to use google sheets for localization.
Localization support plurals and placeholders.

Example use 2 fonts. One for all languages and one for set of languages without chinese, japanese and korean. You can run game with small font and use liveupdate to download full font.

GitHub - d954mas/defold-localization

Localization Example

Defold Localization example https://github.com/d954mas/defold-localization/tree/main This is example how to use google sheet table for localization. Localization support plurals and placeholders. Example use 2 fonts. One for all languages and one for set of languages without chinese, japanese and korean. You can run game with small font and use liveupdate to download full font. [locale_ch] [locale_en] How to use You will need credentials.json to download from google sheets. Make credent…

DAY 2. Advent Calendar 2025 by d954mas(Localization)

[d954mas]

DAY 3. Lua Class

A tiny OOP helper for Lua that builds instances by copying tables instead of metatables. It started as a minimal replacement for middleclass .

GitHub - d954mas/lua-class

Lua Class OOP library

lua-class https://github.com/d954mas/lua-class A tiny OOP helper for Lua that builds instances by copying tables instead of metatables. It started as a minimal replacement for middleclass. Features class.class(name, parent) — define a class and optionally inherit every field/method from parent. class.new_instance(class, ...) — copy the class table into a fresh instance and call initialize(...) if it exists. class.is_instance_of_by_name(instance, name) — simple ancestry check by class name. I…

DAY 3. Advent Calendar 2025 by d954mas (lua-class)

[Lodrasyll]

Thank you for sharing every day! As a beginner, the information you share is helpful for my future learning and development!

[d954mas]

DAY 4. Bunnymark ECS Example

In this example i will show to use my small ECS, based on tiny-ecs in defold project.

GitHub - d954mas/defold-bunnymark-ecs-example

Bunnymark ecs example

Defold ECS Bunnymark Example https://github.com/d954mas/defold-bunnymark-ecs-example This example is a showcase of how to use the lua ecs runtime in Defold. It’s a bunnymark that spawns bunnies, draw bunnies, and measures FPS. Why this ECS? Based on tiny-ecs, but I removed every feature that I don’t use in my games. tiny-ecs ships with 864 lines of code, while ecs/ecs.lua is only 487 lines. Systems, entities, filters, and the tiny class helper all live in a single file, so you can inspect and…

DAY 4. Advent Calendar 2025 by d954mas(Ecs Example)

[d954mas]

DAY 5. N28S
A tiny helper that lets you write Defold scripts without global functions Instead of spreading init,update, and on_input across the global scope, you keep everything inside a single Lua table.

GitHub - d954mas/defold-n28s

N28S(No more global functions in scripts)

N28S(No more global functions in scripts) https://github.com/d954mas/defold-n28s This repository demonstrates how to use n28s (No More Global Functions in Scripts) inside a Defold project. The helper module (n28s.lua) lets you keep your gameplay logic encapsulated in a regular Lua table instead of spreading Defold lifecycle callbacks (init, update, on_input, etc.) over the global scope. It is a tiny drop-in utility inspired by Lerg’s approach and trimmed down for simplicity. Keeping the script…

https://youtu.be/9yX4UjDS7eU

[d954mas]

DAY 6. Virtual Pad Example🎄

This project demonstrates how to use universal virtual pad in Defold games.

GitHub - d954mas/defold-virtualpad-example

Virtual Pad Example

Virtual Pad Example for Defold https://github.com/d954mas/defold-virtualpad-example This project demonstrates how to use universal virtual pad in Defold games. The main folder hosts a minimal scene: the player listens to move messages, while controls.gui_script captures input and forwards it to gui/virtual_pad.lua. PLAY Hooking It Up local VirtualPad = require "gui.virtual_pad" function init(self) msg.post(".", "acquire_input_focus") self.pad = VirtualPad.new("virtual_pad") self.…

DAY 6. Advent Calendar 2025 by d954mas(Virtual Pad Example)

[Mathias_Westerdahl]

Nice! However, I cannot see the video. It says “it’s private”.

[d954mas]

Fixed:)

[d954mas]

DAY 7. 2D Game with Box2D and Tiled Level🎄

A small Defold example project. The goal is to showcase a basic 2D game with Box2D physics and loading a level exported from Tiled.

GitHub - d954mas/game-christmas2025-tiled

Christmas 2025 2D Game(Box2D and Tiled)

Demo: 2D Game with Box2D and Tiled Levels https://github.com/d954mas/game-christmas2025-tiled A small Defold example project. The goal is to showcase a basic 2D game with Box2D physics and loading a level exported from Tiled. What’s inside 2D scene with Box2D physics level export from Tiled Tilemap mesh renderer Windows note I work on Windows. The Tiled export uses .bat/.sh scripts. It should work, but it is untested and paths might need adjustments. [2025-12-21_09-36-07]

DAY 7. Advent Calendar 2025 by d954mas(2D Game with Box2D and Tiled Level)

[d954mas]

DAY 8. Trim Images Script🎄

A small python script to trim alpha from images

GitHub - d954mas/trim-alpha-script

Trim Images Script

trim-images-script https://github.com/d954mas/trim-alpha-script Script to trim transparent borders from PNG images while keeping the center aligned. Can process a single file or a whole directory tree. Requirements Python 3.8+ Pillow Install Pillow: pip install Pillow Supported formats PNG (alpha channel required) JPEG is detected, but it has no alpha channel, so it will be skipped Usage Trim one file: python trim_images.py path/to/image.png Trim a folder recursively with 1px padding: …

DAY 8. Advent Calendar 2025 by d954mas(Trim Images Script)

[d954mas]

DAY 9. Imgui Gizmo🎄

Extension and demo project for testing ImGui Gizmo in Defold: object picking, transforms via gizmo, and a mini camera view manipulator.

GitHub - d954mas/defold-imgui-gizmo

Imgui Gizmo

ImGui Gizmo Demo (Defold) Small demo project for testing ImGui Gizmo in Defold: object picking, transforms via gizmo, and a mini camera view manipulator. https://github.com/d954mas/defold-imgui-gizmo Features Camera view gizmo. Object gizmo (translate/rotate/scale). Grid rendering. Screenshot [2025-12-23_15-54-13] Controls Click an object to select it. The left panel lets you change gizmo mode and edit TRS values manually. Enable Snap for stepped changes. Example Lua header usage (API + c…

DAY 9. Advent Calendar 2025 by d954mas(Imgui Gizmo)

[d954mas]

DAY 10. Html Utils🎄

Small HTML5 extension that adds useful HTML utilities:
canvas focus handling, save/load data via localStorage, and mobile device detection.

GitHub - d954mas/defold-html-utils

Html Utils extension

defold-html-utils https://github.com/d954mas/defold-html-utils Features Focus the canvas and check focus state. Save/load strings in localStorage. Detect mobile devices. Setup You can use defold-html-utils in your own project by adding this project as Defold library dependencies. Open your game.project file and in the dependencies field under project add: https://github.com/d954mas/defold-html-utils/archive/master.zip Usage Example is in main/main.script. function init(self) html_util…

DAY 10. Advent Calendar 2025 by d954mas(Html Utils)

[d954mas]

DAY 11. Screen Resizer🎄

Minimal Defold extension + Lua module to resize the game view and show a menu
of preset sizes.

GitHub - d954mas/defold-screen-resizer

Screen Resizer

Screen Resizer Minimal Defold extension + Lua module to resize the game view and show a menu of preset sizes. https://github.com/d954mas/defold-screen-resizer [screen1] Setup You can use ScreenResizer in your own project by adding this project as Defold library dependencies. Open your game.project file and in the dependencies field under project add: https://github.com/d954mas/defold-screen-resizer/archive/master.zip The GUI script expects a right mouse button binding: mouse_trigger { …

DAY 11. Advent Calendar 2025 by d954mas(Screen Resizer)

[d954mas]

DAY 12. Actions Animation Library🎄

Small action/tween library for Defold: sequences, parallels, tweens for GO/GUI/table, waits, and function steps.

Note: I made this library to control animation timing myself, so I can skip or speed up actions. With Parallel/Sequence, it is much easier to build sequences than with go/gui animate callbacks.

GitHub - d954mas/defold-actions

Actions Animation Library

Defold Actions https://github.com/d954mas/defold-actions Small action/tween library for Defold: sequences, parallels, tweens for GO/GUI/table, waits, and function steps. Note: I made this library to control animation timing myself, so I can skip or speed up actions. With Parallel/Sequence, it is much easier to build sequences than with go/gui animate callbacks. Features Sequence and Parallel actions. Tween actions for GO, GUI, and tables. Easing functions. Optional lerp/slerp for vectors and…

DAY 12. Advent Calendar 2025 by d954mas(Actions Animation Library)

[d954mas]

DAY 13. Gui Resizer🎄

Project for automatic GUI scaling for portrait and landscape orientations with safe area support.

GitHub - d954mas/defold-gui-resizer

Gui Resizer

Defold GUI Resizer Project for automatic GUI scaling for portrait and landscape orientations with safe area support. https://github.com/d954mas/defold-gui-resizer Screenshots [Group 18 (1)] Features Recompute GUI scale based on screen aspect ratio. Automatic selection of gui.ADJUST_FIT / gui.ADJUST_ZOOM. Safe area offsets for UI elements (notch/system bars). Setup You can use this project as a Defold library dependency. Open game.project and add: https://github.com/d954mas/defold-gui-resiz…

DAY 13. Advent Calendar 2025 by d954mas(Gui Resizer)

[d954mas]

Day 14 will be a bit later, sorry — I need a little more time

The idea works, but I need some time to prepare the objects and build a simple level.