Expression Trees in Unity: The SECRET to Flexible Game Logic

Expression Trees in Unity unlock powerful runtime flexibility, enabling dynamic systems like modding, runtime scripting, and data-driven AI—areas where static tools such as interfaces or dependency injection often fall short. By treating code as data, Expression Trees let you dynamically create, modify, and execute logic during gameplay. In this video, we’ll show you how to harness Expression Trees to build adaptive systems for game development. Ever wondered how games like *The Sims, Spore, Creatures, and Black & White* handle the complexity of dynamic behaviors and runtime logic? Expression Trees make similar systems possible, enabling you to manage adaptability and player driven changes without the need to predefine countless interfaces, delegates or hardcode AI behaviors. Read More: https://learn.microsoft.com/en-us/dotnet/csharp/advanced-topics/expression-trees/expression-trees-explained https://tyrrrz.me/blog/expression-trees Code Examples: https://gist.github.com/adammyhre/13c3685f48016e5b197322113082e418 Want to support me? 😀 Buy me a coffee! https://ko-fi.com/adammyhre 🔔 Subscribe for more Unity Tutorials https://youtube.com/@git-amend Discord: https://discord.gg/FDRZGQBBUC #unity3d #gamedev #indiedev ▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬ More Useful Code: https://github.com/adammyhre?tab=repositories Unity Utility Library: https://github.com/adammyhre/Unity-Utils Lock Inspector Hotkey: https://gist.github.com/adammyhre/4754f731a93bf1cab0d1385ccfa23642 Assets Shown In This Video (Affiliate Links) Many of the Tools and other Assets used on this Channel will be on SALE during BLACK FRIDAY Black Friday Sale: https://assetstore.unity.com/?flashdeals=true&rows=96&aid=1101lw3sv Logwin: https://assetstore.unity.com/packages/tools/utilities/logwin-log-debug-values-tracker-149558?aid=1101lw3sv C# Eval: https://assetstore.unity.com/packages/tools/visual-scripting/c-eval-56706?aid=1101lw3sv RPG Fantasy Characters: https://assetstore.unity.com/packages/3d/characters/humanoids/fantasy/rpg-fantasy-pack-47749?aid=1101lw3sv Heroic Creatures: https://assetstore.unity.com/packages/3d/characters/creatures/heroic-fantasy-creatures-full-pack-volume-1-5730?aid=1101lw3sv Dynamic Nature: https://assetstore.unity.com/packages/3d/vegetation/forest-environment-dynamic-nature-150668?aid=1101lw3sv Beautify: https://assetstore.unity.com/packages/vfx/shaders/fullscreen-camera-effects/beautify-3-advanced-post-processing-233073?aid=1101lw3sv Umbra Soft Shadows: https://assetstore.unity.com/packages/vfx/shaders/fullscreen-camera-effects/umbra-soft-shadows-better-directional-contact-shadows-for-urp-282485?aid=1101lw3sv Cloud Shadows: https://assetstore.unity.com/packages/vfx/shaders/cloud-shadows-fx-267702?aid=1101lw3sv Timeflow: https://assetstore.unity.com/packages/tools/animation/timeflow-animation-system-247895?aid=1101lw3sv Hot Reload: https://assetstore.unity.com/packages/tools/utilities/hot-reload-edit-code-without-compiling-254358?aid=1101lw3sv Hierarchy Icons: https://assetstore.unity.com/packages/tools/utilities/better-hierarchy-272963?aid=1101lw3sv Better Transform: https://assetstore.unity.com/packages/tools/utilities/better-transform-size-notes-global-local-workspace-child-parent--276554?aid=1101lw3sv Better Mesh Filter: https://assetstore.unity.com/packages/tools/utilities/better-mesh-filter-266489?aid=1101lw3sv Editor Console Pro: https://assetstore.unity.com/packages/tools/utilities/editor-console-pro-11889?aid=1101lw3sv Any Object Finder: https://assetstore.unity.com/packages/tools/utilities/any-object-finder-286455?aid=1101lw3sv *Follow me!* https://linktr.ee/gitamend