feat(weapon.rs): add weapon struct and impl

src/weapon.rs

@@ -0,0 +1,36 @@
+pub struct Weapon {
+    name: &'static str,
+    damage: u8,
+    durability: u8,
+}
+
+impl Weapon {
+    pub fn new(name: &'static str, damage: u8, durability: u8) -> Self {
+        Weapon {
+            name,
+            damage,
+            durability,
+        }
+    }
+
+    pub fn consume(&mut self) -> &mut Self {
+        self.durability -= (self.damage / 2) as u8;
+        self
+    }
+
+    fn is_broken(&self) -> bool {
+        self.durability <= 0
+    }
+
+    pub fn if_not_broken<T>(&mut self, fun: impl FnOnce(u8) -> T) -> Option<T> {
+        if !self.is_broken() {
+            Some(fun(self.damage))
+        } else {
+            None
+        }
+    }
+
+    pub fn get_name(&self) -> &'static str {
+        self.name
+    }
+}