Exp system implementation (not yet affecting stats)

src/player/Player.cs

@@ -3,6 +3,7 @@ using Chickensoft.GodotNodeInterfaces;
 using Chickensoft.Introspection;
 using Chickensoft.SaveFileBuilder;
 using Godot;
+using Godot.Collections;
 
 namespace GameJamDungeon
 {
@@ -18,6 +19,8 @@ namespace GameJamDungeon
 
     public void ApplyCentralImpulseToPlayer(Vector3 velocity);
 
+    public void LevelUp();
+
     event Player.InventoryButtonPressedEventHandler InventoryButtonPressed;
     event Player.MinimapButtonHeldEventHandler MinimapButtonHeld;
     event Player.PauseButtonPressedEventHandler PauseButtonPressed;
@@ -81,9 +84,21 @@ namespace GameJamDungeon
     private float _knockbackStrength = 0.0f;
     private Vector3 _knockbackDirection = Vector3.Zero;
 
+    private Dictionary<int, int> _expToNextLevel;
+
     public void Initialize()
     {
       AnimationPlayer.AnimationFinished += OnAnimationFinished;
+      _expToNextLevel = new Dictionary<int, int>
+      {
+        { 2, 12 },
+        { 3, 39 },
+        { 4, 87 },
+        { 5, 162 },
+        { 6, 270 },
+        { 7, 417 },
+        { 8, 609 }
+      };
     }
 
     public void Setup()
@@ -128,6 +143,7 @@ namespace GameJamDungeon
 
       PlayerData.Inventory.EquippedAccessory.Sync += EquippedAccessory_Sync;
       PlayerData.CurrentHP.Sync += CurrentHP_Sync;
+      PlayerData.CurrentExp.Sync += CurrentEXP_Sync;
 
       HealthTimer.WaitTime = _healthTimerWaitTime;
     }
@@ -170,6 +186,16 @@ namespace GameJamDungeon
       SetPhysicsProcess(true);
     }
 
+    public void LevelUp()
+    {
+      var nextLevel = PlayerData.CurrentLevel.Value + 1;
+      var expToNextLevel = _expToNextLevel[nextLevel];
+      var newCurrentExp = Mathf.Max(PlayerData.CurrentExp.Value - PlayerData.ExpToNextLevel.Value, 0);
+      PlayerData.SetCurrentLevel(nextLevel);
+      PlayerData.SetExpToNextLevel(expToNextLevel);
+      PlayerData.SetCurrentExp(newCurrentExp);
+    }
+
     public override void _UnhandledInput(InputEvent @event)
     {
       if (@event.IsActionPressed(GameInputs.Inventory))
@@ -316,5 +342,11 @@ namespace GameJamDungeon
       if (newHealth <= 0)
         Kill();
     }
+
+    private void CurrentEXP_Sync(int newExp)
+    {
+      if (PlayerData.CurrentExp.Value >= PlayerData.ExpToNextLevel.Value)
+        LevelUp();
+    }
   }
 }

src/player/Player.tscn

@@ -20,7 +20,7 @@ MaximumHP = 100
 CurrentVT = 90
 MaximumVT = 90
 CurrentExp = 0
-ExpToNextLevel = 100
+ExpToNextLevel = 10
 CurrentLevel = 1
 CurrentAttack = 50
 CurrentDefense = 12

src/player/PlayerData.cs

@@ -63,8 +63,7 @@ namespace GameJamDungeon
     }
     public void SetCurrentExp(int newValue)
     {
-      var clampedValue = Mathf.Clamp(newValue, 0, ExpToNextLevel.Value);
-      _currentExp.OnNext(clampedValue);
+      _currentExp.OnNext(newValue);
     }
     public void SetCurrentLevel(int newValue)
     {