ChunkDev 🦋
@chunkdev.bsky.social
Building ChunkCity - an Infinite City Builder for PC & mobile 💻📱. No engine, built with #Kotlin and #libGDX
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ChunkDev 🦋
@chunkdev.bsky.social
· Jul 24
Angular lerping done wrong in production
December 25, 2025 at 10:33 PM
Angular lerping done wrong in production
December 21, 2025 at 7:59 PM
Implemented a Vector3 inspired by libGDX in my Kotlin scripting runtime. Overriding equality just works - and later sharing the native host class should work seamlessly as well.
#kotlin
#kotlin
December 19, 2025 at 9:44 PM
Implemented a Vector3 inspired by libGDX in my Kotlin scripting runtime. Overriding equality just works - and later sharing the native host class should work seamlessly as well.
#kotlin
#kotlin
Reposted by ChunkDev 🦋
Simulating water evaporation & precipitation, driven by a (somewhat fake) fluid simulation for the wind! Need to tweak some constants but overall taking e.g. year-average precipitation and temperature should give me some nice biomes.
#indiedev #gamedev #indiegames
#indiedev #gamedev #indiegames
December 10, 2025 at 8:04 PM
Simulating water evaporation & precipitation, driven by a (somewhat fake) fluid simulation for the wind! Need to tweak some constants but overall taking e.g. year-average precipitation and temperature should give me some nice biomes.
#indiedev #gamedev #indiegames
#indiedev #gamedev #indiegames
Reposted by ChunkDev 🦋
I refactored my code that generates a density map for the city to be more detailed and loved the resulting texture so much that I felt compelled to use it in the game. So I added these parallax map displays kind of like some cities have miniature versions of them.
#gamedev #indiegame #procgen
#gamedev #indiegame #procgen
December 10, 2025 at 2:34 PM
I refactored my code that generates a density map for the city to be more detailed and loved the resulting texture so much that I felt compelled to use it in the game. So I added these parallax map displays kind of like some cities have miniature versions of them.
#gamedev #indiegame #procgen
#gamedev #indiegame #procgen
I added thread support to my runtime. It’s mostly a wrapper around Kotlin’s threads - and of course I had to demonstrate it with the obligatory race-condition example.
#kotlin
#kotlin
December 6, 2025 at 5:32 PM
I added thread support to my runtime. It’s mostly a wrapper around Kotlin’s threads - and of course I had to demonstrate it with the obligatory race-condition example.
#kotlin
#kotlin
December 3, 2025 at 9:27 PM
I discovered that adding new opcodes is sometimes easier if I introduce them through handwritten MiniKt assembly functions, so I can reuse the normal function resolution. The compiler inlines them anyway.
#kotlin
#kotlin
November 30, 2025 at 7:41 PM
I discovered that adding new opcodes is sometimes easier if I introduce them through handwritten MiniKt assembly functions, so I can reuse the normal function resolution. The compiler inlines them anyway.
#kotlin
#kotlin
One of Kotlin’s wildest features: you can define control flow altering functions using lambda expressions with a special syntax. Thanks to aggressive inlining it’s basically free.
#kotlin
#kotlin
November 27, 2025 at 1:25 PM
One of Kotlin’s wildest features: you can define control flow altering functions using lambda expressions with a special syntax. Thanks to aggressive inlining it’s basically free.
#kotlin
#kotlin
Higher-order functions take other functions as arguments. The fun part: you must not inline the call unless the target is constant - otherwise you break semantics (and your VM).
#kotlin
#kotlin
November 25, 2025 at 9:15 PM
Higher-order functions take other functions as arguments. The fun part: you must not inline the call unless the target is constant - otherwise you break semantics (and your VM).
#kotlin
#kotlin
November 23, 2025 at 3:33 PM
This is my first time implementing class inheritance via vtables (in my tiny Kotlin runtime).
A::foo() vs B::foo() get resolved through vtables in the generated code if they cannot be resolved statically. Seeing it work correctly is more satisfying than it should be.
#kotlin
A::foo() vs B::foo() get resolved through vtables in the generated code if they cannot be resolved statically. Seeing it work correctly is more satisfying than it should be.
#kotlin
November 22, 2025 at 9:11 PM
This is my first time implementing class inheritance via vtables (in my tiny Kotlin runtime).
A::foo() vs B::foo() get resolved through vtables in the generated code if they cannot be resolved statically. Seeing it work correctly is more satisfying than it should be.
#kotlin
A::foo() vs B::foo() get resolved through vtables in the generated code if they cannot be resolved statically. Seeing it work correctly is more satisfying than it should be.
#kotlin
Imagine your embedded runtime throwing exceptions with real stack traces - and your IDE actually picking them up correctly so you can easily navigate there. 🤯
#kotlin
#kotlin
November 20, 2025 at 6:59 PM
Imagine your embedded runtime throwing exceptions with real stack traces - and your IDE actually picking them up correctly so you can easily navigate there. 🤯
#kotlin
#kotlin
The journey continues. I’m still aiming for the point where I can take some random Kotlin code and execute it within Kotlin.
Recent additions:
- Explicit nullability
- Safe calls
- Extension functions
#kotlin
Recent additions:
- Explicit nullability
- Safe calls
- Extension functions
#kotlin
November 20, 2025 at 4:24 PM
The journey continues. I’m still aiming for the point where I can take some random Kotlin code and execute it within Kotlin.
Recent additions:
- Explicit nullability
- Safe calls
- Extension functions
#kotlin
Recent additions:
- Explicit nullability
- Safe calls
- Extension functions
#kotlin
My embeddable Kotlin scripting language just got a new feature: classes.
And if you look at the assembly, you can see the function calls getting inlined.
#kotlin
And if you look at the assembly, you can see the function calls getting inlined.
#kotlin
November 17, 2025 at 6:47 PM
My embeddable Kotlin scripting language just got a new feature: classes.
And if you look at the assembly, you can see the function calls getting inlined.
#kotlin
And if you look at the assembly, you can see the function calls getting inlined.
#kotlin
Sometimes you get one of those insane ideas you know you’ll regret, but it’s just too intriguing.
So… I’m building a compiler for a subset of Kotlin - something I can embed into Kotlin/JVM projects like Lua, but with static typing and better performance.
#kotlin
So… I’m building a compiler for a subset of Kotlin - something I can embed into Kotlin/JVM projects like Lua, but with static typing and better performance.
#kotlin
November 15, 2025 at 12:52 PM
Sometimes you get one of those insane ideas you know you’ll regret, but it’s just too intriguing.
So… I’m building a compiler for a subset of Kotlin - something I can embed into Kotlin/JVM projects like Lua, but with static typing and better performance.
#kotlin
So… I’m building a compiler for a subset of Kotlin - something I can embed into Kotlin/JVM projects like Lua, but with static typing and better performance.
#kotlin
Reposted by ChunkDev 🦋
November 8, 2025 at 7:24 PM
November 6, 2025 at 7:06 PM
Experimenting with clipping based transparency. In contrast to actual alpha it doesn't require special sorting or separate draw calls. However, some GPUs - especially mobile ones - tend to dislike this type of rendering pretty much. It's also quite noticable on lower resolutions.
November 3, 2025 at 7:02 PM
Experimenting with clipping based transparency. In contrast to actual alpha it doesn't require special sorting or separate draw calls. However, some GPUs - especially mobile ones - tend to dislike this type of rendering pretty much. It's also quite noticable on lower resolutions.
November 2, 2025 at 9:46 PM