Hands-on Rust

Collision Detection

If you run around the map, you’ll notice that nothing happens when you hit a monster. Let’s change that by adding collision detection. You’ll write a combat system in Chapter 8, ​Health and Melee Combat​—for now, walking into a monster will remove it from the dungeon.

Collision detection will be its own system. Add a new file to your project, src/systems/collisions.rs. Don’t forget to add mod collisions; to your src/systems/mod.rs file.

Start collisions.rs with a similar pattern:

EntitiesComponentsAndSystems/dungeonecs/src/systems/collisions.rs

use crate::prelude::*;

#[system]
#[read_component(Point)] 
#[read_component(Player)]
#[read_component(Enemy)]
pub fn collisions(ecs: &mut SubWorld, commands: ...