Many fixes:

- comment out dead code
- reduce number of casting
- fix loop block

src/human.rs

@@ -1,31 +1,32 @@
-use crate::prelude::*;
+// use crate::prelude::*;
 
-#[derive(Copy, Clone, PartialEq)]
+// #[derive(Copy, Clone, PartialEq)]
+#[derive(PartialEq)]
 pub enum State {
     Normal,
     Infected,
     Dead,
     Immune,
 }
-#[derive(Clone,Copy)]
+// #[derive(Clone)]
 pub struct Human {
     pub present_state : State,
     pub x : i32,
     pub y : i32,
 }
 impl Human{
-    pub fn new(state : State, pos_x :i32, pos_y :i32) -> Self{
-        Self{
-            present_state : state,
-            x : pos_x,
-            y : pos_y
-        }
-    }
-    pub fn new_empty() -> Self{
-        Self{
-            present_state:State::Normal,
-            x : 0,
-            y : 0,
-        }
-    }
+    // pub fn new(state : State, pos_x :i32, pos_y :i32) -> Self{
+    //     Self{
+    //         present_state : state,
+    //         x : pos_x,
+    //         y : pos_y
+    //     }
+    // }
+    // pub fn new_empty() -> Self{
+    //     Self{
+    //         present_state:State::Normal,
+    //         x : 0,
+    //         y : 0,
+    //     }
+    // }
 }