Join the Discord: https://discord.gg/4tHeAkxNg7 In this episode I go over the first steps in improving the editor workflow. This is mainly about implementing a multi-select box, where you can drag and select multiple objects to move and edit. However, I also go over some important utility functions like converting world coordinates to screen coordinates, and screen coordinates to world coordinates. I also abstract the key combos and mouse control logic all into one place, that way it's much easier to find and implement new logic for those controls. Code Diff: https://github.com/codingminecraft/MarioYoutube/compare/marioDev Code : https://github.com/codingminecraft/MarioYoutube/tree/c21f1316be46cc8334008c35c45ea2a23588893c 0:00 Intro 2:01 Abstracting Key Combos 3:00 Quick Disclaimer 3:14 Back to Business 5:42 Key Combos for Multi-Select 7:49 Adding Multi-Select to Properties Window 10:49 Debugging 11:45 Adding Read Pixels to Picking Texture 13:54 Mouse Listener Fixes 16:21 Screen To World/World To Screen 23:03 Abstracting Mouse Picking 25:42 Drawing Multi-Select Box 29:09 Debugging 31:08 Back to Business 36:01 In the Next Episode --------------------------------------------------------------------- Website: https://ambrosiogabe.github.io/ Github: https://github.com/ambrosiogabe Here are some books I recommend if you want to learn about game engine development more thoroughly. I do not profit off any of these sales, these are just some books that have helped me out :) My Recommended Game Engine Books: Game Engine Architecture: https://www.gameenginebook.com/ Game Physics Cookbook (Read this before the next physics book): https://www.amazon.com/Game-Physics-Cookbook-Gabor-Szauer/dp/1787123669 Game Physics (Ian Millington): https://www.amazon.com/Game-Physics-Engine-Development-Commercial-Grade/dp/0123819768 Game Programming Patterns (Free): https://gameprogrammingpatterns.com/ My Recommended Beginning Game Programming Books: JavaScript Game Design: https://www.apress.com/gp/book/9781430247166 My Recommended Java Books: Data Structures/Algorithms: https://www.amazon.com/Data-Structures-Algorithms-Java-6th-ebook/dp/B00JDRQF8C LWJGL (Free, but I haven't read this thoroughly): https://lwjglgamedev.gitbooks.io/3d-game-development-with-lwjgl/content/