Finish cleanup of Assignment 6, complete of Rust, and most of 396's assignments.

maze.rs

@@ -0,0 +1,74 @@
+use std::io;
+
+fn main()
+{
+    let maze = [[' ', ' ', 'X'], [' ', ' ', ' '], [' ', 'E', ' ']];
+    let mut x = 0;
+    let mut y = 0;
+
+    loop
+    {
+        if maze[x][y] == 'E'
+        {
+            println!("You found the exit.");
+            break;
+        }
+
+        let mut moves = Vec::new();
+        if x > 0 && maze[x - 1][y] != 'X'
+        {
+            // north
+            moves.push("North");
+        }
+        if x < 2 && maze[x + 1][y] != 'X'
+        {
+            // south
+            moves.push("South");
+        }
+        if y > 0 && maze[x][y - 1] != 'X'
+        {
+            // west
+            moves.push("West");
+        }
+        if y < 2 && maze[x][y + 1] != 'X'
+        {
+            // east
+            moves.push("East");
+        }
+        println!("There are open doors: {}", moves.join(", "));
+        println!("Which door do you want to walk through?");
+
+        let mut input = String::new();
+        io::stdin().read_line(&mut input).expect("Failed to read input");
+        input = input.trim().to_uppercase();
+
+        match input.as_str()
+        {
+            "N" if x > 0 && maze[x - 1][y] != 'X' => 
+            {
+                x = x - 1;
+            }
+            "S" if x < 2 && maze[x + 1][y] != 'X' => 
+            {
+                x = x + 1;
+            }
+            "E" if y < 2 && maze[x][y + 1] != 'X' => 
+            {
+                y = y + 1;
+            }
+            "W" if y > 0 && maze[x][y - 1] != 'X' => 
+            {
+                y = y - 1;
+            }
+            "Q" =>
+            {
+                println!("You quit the game.");
+                break;
+            }
+            _ =>
+            {
+                println!("Invalid move.");
+            }
+        }
+    }
+}