Bug fixes

src/belt_finding/common.rs

@@ -62,6 +62,17 @@ impl PathField {
             },
         }
     }
+
+    pub fn cost(&self) -> usize {
+        match self {
+            PathField::Belt { pos: _, dir: _ } => 300,
+            PathField::Underground {
+                pos: _,
+                dir: _,
+                len: _,
+            } => 1750,
+        }
+    }
 }
 
 pub fn print_map<F>(width: i32, height: i32, f: F) -> io::Result<()>