give different artifacts differen looks

src/artifacts.rs

@@ -1,8 +1,10 @@
+use ratatui::style::Color;
 use crate::position::Position;
 use crate::player::Player;
 
 pub trait Artifact {
     //! An artifact that can be collected by the player
+    fn get_representation(&self) -> (&str, Color);
     /// get the position of the artifact in the level
     fn get_immutable_position(&self) -> &Position;
     /// call to apply the effects of the artifact to the player
@@ -25,6 +27,10 @@ impl Chest {
 }
 
 impl Artifact for Chest {
+    fn get_representation(&self) -> (&str, Color) {
+        ("C", Color::Blue)
+    }
+
     fn get_immutable_position(&self) -> &Position { &self.position }
     fn collect(&mut self, player: &mut Player) {
         player.retrieve_gold(self.gold);
@@ -48,6 +54,9 @@ impl Potion {
 }
 
 impl Artifact for Potion {
+    fn get_representation(&self) -> (&str, Color) {
+        ("P", Color::Green)
+    }
     fn get_immutable_position(&self) -> &Position { &self.position }
     fn collect(&mut self, player: &mut Player) {
         player.change_life(self.health.try_into().unwrap());