unused potions now are collected in the inventory and can be consumed with the p key

src/artifacts.rs

@@ -54,10 +54,12 @@ impl Artifact for Chest {
     }
 }
 
+#[derive(Clone, Copy)]
 pub struct Potion {
     /// a potion that restores some health
     position: Position,
     health: usize,
+    was_collected: bool,
 }
 
 impl Potion {
@@ -67,6 +69,7 @@ impl Potion {
         Self {
             position,
             health: rand::thread_rng().gen_range(min_health_gain..=max_health_gain),
+            was_collected: false,
         }
     }
 }
@@ -89,15 +92,20 @@ impl Artifact for Potion {
                 format!("picked up potion and gained {} health.", new - old).to_string(),
             );
             self.health = 0;
+            self.was_collected = true;
         } else {
-            messages.insert(
-                0,
-                "not using the potion because you're healthy.".to_string(),
-            );
+            messages.insert(0, "move potion to inventory.".to_string());
+            player.add_to_inventory(self);
+            self.was_collected = true;
         }
     }
 
     fn was_collected(&self) -> bool {
-        self.health == 0
+        self.was_collected
+    }
+}
+impl Potion {
+    pub fn get_health(&self) -> usize {
+        self.health
     }
 }