add VelocityModifier property to roll state

also nerf from 2x to 1.5x velocity

Characters/Character.cs

@@ -167,7 +167,7 @@ public partial class Character : CharacterBody2D, IFaction
         // TODO: make PlayerRollState a CharacterRollState instead
         else if (state is State.Character.PlayerRollState rollState)
         {
-            Velocity *= 2;
+            Velocity *= rollState.VelocityModifier;
             //Velocity *= rollState.VelocityModifier;
         }
     }

State/Character/PlayerRollState.cs

@@ -10,6 +10,8 @@ public partial class PlayerRollState : PlayerState
 
     private GpuParticles2D _particles;
 
+    public float VelocityModifier { get; set; } = 1.5f;
+
     public PlayerRollState()
     {
         CanEnterWhileUsingItem = false;