Vertex Loading

Added the ability to load vertex data from the vertexes lump for
a given level. This is to close issue #5 to get vertex data
loading working.

src/main.rs

@@ -1,9 +1,12 @@
+mod doomlevel;
 mod wadfile;
 
+use doomlevel::DoomLevel;
 use wadfile::WADFile;
 
 fn main() {
     let wad_file = WADFile::from_path("WADs/doom1.wad");
+    let level = DoomLevel::load_level(&wad_file, wad_file.get_index_from_name("e1m1").unwrap());
 
     println!(
         "WAD Path: {}
@@ -32,8 +35,12 @@ Header:
         );
     }
 
-    println!(
-        "Index of e1m1 is: {}",
-        wad_file.get_index_from_name("e1m1").unwrap()
-    );
+    println!("\nFirst 20 Vertex Entries for E1M1:");
+
+    for i in 0..20 {
+        println!(
+            "\t{} - ({}, {})",
+            i, level.vertexes[i].x, level.vertexes[i].y
+        );
+    }
 }