http://localhost:1313/tags/ecs/Recent content in Ecs on LorbicHugoenSat, 08 Aug 2026 10:00:00 +0530http://localhost:1313/structure-of-arrays-ecs-bitmasks-golang/Sat, 08 Aug 2026 10:00:00 +0530http://localhost:1313/structure-of-arrays-ecs-bitmasks-golang/<p>When I started building <em>Derelict Facility</em>, my initial instinct for game actors was standard Object-Oriented design: create an <code>Entity</code> struct, add pointers for position, sprite, and stats, and store them in a slice (<code>[]*Entity</code>).</p> <p>It worked fine for five entities. But as soon as I added automated doors, save terminals, and active power grids across a 1000-tile map, keeping track of separate heap pointers became a headache. My Go profiler showed GC pauses spiking while the CPU spent more time chasing heap pointers across non-contiguous memory than actually updating game state.</p>