system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does character movement work in games? Is the character actually moving through an open world, or is the map just moving judged on your control?
gpt
It's nearly always the first. Basically, everything in the game world has a position in (x, y, z) coordinates, just like in math class. It's much more efficient to change the one value for your character's position than it is to change the values of everything in the entire world.