github.com/drbawb/rust-story @ep-023-rust-1.0.0.c5961ad06

In an effort to teach myself Rust I've decided to follow along with the excellent youtube playlist reconstructing cavestory.

This project uses rust-sdl2 which binds to SDL2.

Building w/ Cargo

This project uses Cargo to fetch dependencies and drive compilation. Make sure you have a recent version of rustc and cargo.

To build simply run: cargo build from the root of the project.

The project is structured as follows:

-- assets/  (assets linked to in the youtube playlist notes)
-- src/     (.rs files used to build the game)

For the most part this program reads much like it's C++ and C++11 counterparts.

• Traits are used instead of extending abstract classes.

  • These are similar to interfaces in Go, Java, etc.

• Pattern matching is leveraged where appropriate

  • For a fun head-scratcher: look at Player::load_sprite()
    • The rust compiler requires exhaustive patterns, so:
    • For every combination of (Movement, Looking, Facing) load_sprite() must return some sprite.
    • (Obviously the compiler cannot guarantee that we load the correct sprite.)

• Reference counting is used for safely sharing pointers.

Some areas that could be improved:

• Needless copying and allocation, espcially w.r.t using strings for map keys.
• Remove unnecessary boxes
• Re-evaluate usages of trait objects