Hands-on Rust

Composing the Player

Rather than coding everything player related into a single module, the ECS approach is to describe a player in terms of what components they use. Looking at the Player module from the previous chapter, you can deduce some components that meet your needs:

• A Player component indicating that the player is a Player. Components don’t have to contain any fields. An empty component is sometimes called a “tag”—it serves to flag that a property exists.

• A Render component describing how the player appears on the screen.

• A Position component indicating where the entity is on the map. The Point structure from bracket-lib is ideal for this; it contains an x and a y component, and it also provides several point-related math functions ...