Replace SDL with minifb

Cargo.toml

@@ -6,6 +6,6 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-sdl2 = "0.35.1"
 num = "0.4.0"
 clap = { version = "3.0.14", features = ["derive"] }
+minifb = "0.20"

README.md

@@ -8,8 +8,6 @@ Prototype Wolfenstein 3D port written in Rust.
 
 ## Setup
 
-This requires the [SDL development library](https://github.com/Rust-SDL2/rust-sdl2#sdl20-development-libraries).
-
 To run the game, it's necessary to include the Wolfenstein data files in the `data/` directory.
 This should be from the shareware version, ending in `.WL1` (`GAMEMAPS.WL1`, `VGAGRAPH.WL1`, etc.).
 The files can be found, for example, [here](https://archive.org/details/Wolfenstein3d).

src/cache.rs

@@ -1,5 +1,4 @@
 use crate::constants::{MAP_HEIGHT, MAP_WIDTH};
-use crate::map;
 use crate::map::Map;
 use std::fs;
 use std::path::Path;
@@ -198,8 +197,8 @@ impl Cache {
         &self.sounds[index]
     }
 
-    pub fn get_map(&self, episode: usize, level: usize) -> &Map {
-        &self.maps[level + 10 * episode]
+    pub fn get_map(&self, episode: usize, level: usize) -> Map {
+        self.maps[level + 10 * episode].clone()
     }
 }