role-playing-game v2

role-playing-game/src/role_playing_game.gleam

@@ -1,3 +1,4 @@
+import gleam/int
 import gleam/option.{type Option, None, Some}
 
 pub type Player {
@@ -16,81 +17,21 @@ pub fn revive(player: Player) -> Option(Player) {
     False -> None
     True -> {
       case player.level >= 10 {
-        False ->
-          Some(Player(
-            name: player.name,
-            level: player.level,
-            health: 100,
-            mana: None,
-          ))
-        True ->
-          Some(Player(
-            name: player.name,
-            level: player.level,
-            health: 100,
-            mana: Some(100),
-          ))
+        False -> Some(Player(..player, health: 100))
+        True -> Some(Player(..player, health: 100, mana: Some(100)))
       }
     }
   }
 }
 
-// The `cast_spell` function takes as arguments an `Int` indicating how much mana the spell costs as well as a `Player`.
-// It returns the updated player, as well as the amount of damage that the cast spell performs.
-// A successful spell cast does damage equal to two times the mana cost of the spell.
-// However, if the player has insufficient mana, nothing happens, the player is unchanged and no damage is done.
-// If the player does not even have a mana pool, attempting to cast the spell must decrease their health by the mana cost of the spell and does no damage.
-// Be aware that the players health cannot be below zero (0).
-
 pub fn cast_spell(player: Player, cost: Int) -> #(Player, Int) {
-  let damage = cost * 2
-
   case player.mana {
-    None -> {
-      let health = player.health - cost
-      case health {
-        h if h > 0 -> #(
-          Player(
-            name: player.name,
-            level: player.level,
-            health:,
-            mana: player.mana,
-          ),
-          0,
-        )
-        _ -> #(
-          Player(
-            name: player.name,
-            level: player.level,
-            health: 0,
-            mana: player.mana,
-          ),
-          0,
-        )
-      }
-    }
+    None -> #(Player(..player, health: player.health - cost |> int.max(0)), 0)
 
-    Some(mana) -> {
-      let mana_left = mana - cost
-      case mana_left {
-        ml if ml >= 0 -> #(
-          Player(
-            name: player.name,
-            level: player.level,
-            health: player.health,
-            mana: Some(ml),
-          ),
-          damage,
-        )
-        _ -> #(player, 0)
+    Some(mana) ->
+      case mana {
+        m if m < cost -> #(player, 0)
+        m -> #(Player(..player, mana: Some(m - cost)), cost * 2)
       }
-      // let health = player.health - damage
-      // case health {
-      //   h if h > 0 ->
-      //     Player(name: player.name, level: player.level, health:, mana: todo)
-      //   _ ->
-      //     Player(name: player.name, level: player.level, health: 0, mana: mana)
-      // }
-    }
   }
 }