chore,gd: refactored project structure and started the mantle system

player_controller/Scripts/Stamina.cs

@@ -0,0 +1,40 @@
+using Godot;
+
+namespace PolarBears.PlayerControllerAddon;
+
+public partial class Stamina : Node
+{
+	[Export(PropertyHint.Range, "0,60,0.1,suffix:s,or_greater")]
+	public float MaxRunTime { get; set; } = 10.0f;
+	// Regenerate run time multiplier (when run 10s and RunTimeMultiplier = 2.0f to full regenerate you need 5s)
+	[Export(PropertyHint.Range, "0,10,0.01,or_greater")]
+	public float RunTimeMultiplier { get; set; } = 2.0f;
+
+	private float _currentRunTime;
+
+	private float _walkSpeed;
+	private float _sprintSpeed;
+
+	public void SetSpeeds(float walkSpeed, float sprintSpeed)
+	{
+		_walkSpeed = walkSpeed;
+		_sprintSpeed = sprintSpeed;
+	}
+
+	public float AccountStamina(double delta, float wantedSpeed)
+	{
+		if (Mathf.Abs(wantedSpeed - _sprintSpeed) > 0.1f)
+		{
+			float runtimeLeft = _currentRunTime - (RunTimeMultiplier * (float)delta);
+			
+			if (_currentRunTime != 0.0f)
+				_currentRunTime = Mathf.Clamp(runtimeLeft, 0, MaxRunTime);
+			
+			return wantedSpeed;
+		}
+
+		_currentRunTime = Mathf.Clamp(_currentRunTime + (float) delta, 0, MaxRunTime);
+		
+		return _currentRunTime >= MaxRunTime ? _walkSpeed : wantedSpeed;
+	}
+}