Make a four-room dungeon.

Gotta try out all of those directions!

Map:

/---------------------------------\
|               |                 |
|               |                 |
|               -                 |
|                                 |
|                                 |
|               -                 |
|               |                 |
|0              |1                |
|-----|    |----+------|    |-----|
|               |                 |
|               |                 |
|               |                 |
|               |                 |
|               |                 |
|               |                 |
|               |                 |
|2              |3                |
\---------------+------|    |-----|
                |                 |
                |                 |
                |                 |
                |      Exit       |
                |                 |
                |                 |
                |                 |
                |4                |
                +-----------------/

src/main.rs

@@ -43,27 +43,53 @@ impl Room {
 fn main() {
     let rooms = vec![
         Room {
-            description: "You find yourself in a room. There is a door to the south.".to_string(),
+            description: "You find yourself in a room. There is a door to the south and a door to the east.".to_string(),
             exits: vec![
                 Exit {
                     direction: South,
+                    target: 2,
+                },
+                Exit {
+                    direction: East,
                     target: 1,
                 },
             ],
         },
         Room {
-            description: "You find yourself in a room. There is a door to the north and a door to the south.".to_string(),
+            description: "You find yourself in a room. There is a door to the west and a door to the south.".to_string(),
             exits: vec![
+                Exit {
+                    direction: West,
+                    target: 0,
+                },
                 Exit {
                     direction: South,
-                    target: 2,
+                    target: 3,
                 },
+            ],
+        },
+        Room {
+            description: "You find yourself in a room. There is a door to the north.".to_string(),
+            exits: vec![
                 Exit {
                     direction: North,
                     target: 0,
                 },
             ],
         },
+        Room {
+            description: "You find yourself in a room. There is a door to the north and a door to the south.".to_string(),
+            exits: vec![
+                Exit {
+                    direction: North,
+                    target: 1,
+                },
+                Exit {
+                    direction: South,
+                    target: 4,
+                },
+            ],
+        },
         Room {
             description: "Dungeon exit".to_string(),
             exits: vec![],