fast bullet accelerates instead of being fast immediately

tanks-backend/TanksServer/GameLogic/GameRules.cs

@@ -27,4 +27,6 @@ internal sealed class GameRules
     public int ReloadDelayMs { get; set; } = 3000;
 
     public double SmartBulletInertia { get; set; } = 1;
+
+    public double FastBulletAcceleration { get; set; } = 0.25;
 }

tanks-backend/TanksServer/GameLogic/MapEntityManager.cs

@@ -17,7 +17,6 @@ internal sealed class MapEntityManager(
 
     public void SpawnBullet(Player tankOwner, FloatPosition position, double rotation, MagazineType type)
     {
-        var speed = _rules.BulletSpeed * (type.HasFlag(MagazineType.Fast) ? 2 : 1);
         _bullets.Add(new Bullet
         {
             Owner = tankOwner,
@@ -26,8 +25,9 @@ internal sealed class MapEntityManager(
             IsExplosive = type.HasFlag(MagazineType.Explosive),
             Timeout = DateTime.Now + _bulletTimeout,
             OwnerCollisionAfter = DateTime.Now + TimeSpan.FromSeconds(1),
-            Speed = speed,
-            IsSmart = type.HasFlag(MagazineType.Smart)
+            Speed = _rules.BulletSpeed,
+            IsSmart = type.HasFlag(MagazineType.Smart),
+            Acceleration = type.HasFlag(MagazineType.Fast) ? _rules.FastBulletAcceleration : 0d
         });
     }
 

tanks-backend/TanksServer/GameLogic/MoveBullets.cs

@@ -24,6 +24,8 @@ internal sealed class MoveBullets(
             bullet.Rotation += difference * inertiaFactor;
         }
 
+        bullet.Speed *= 1 + (bullet.Acceleration * delta.TotalSeconds);
+
         var speed = bullet.Speed * delta.TotalSeconds;
         var angle = bullet.Rotation * 2 * Math.PI;
         bullet.Position = new FloatPosition(

tanks-backend/TanksServer/Models/Bullet.cs

@@ -16,7 +16,9 @@ internal sealed class Bullet : IMapEntity
 
     internal required DateTime OwnerCollisionAfter { get; init; }
 
-    public required double Speed { get; init; }
+    public required double Speed { get; set; }
+
+    public required double Acceleration { get; init; }
 
     public required bool IsSmart { get; init; }
 }

tanks-backend/TanksServer/appsettings.json

@@ -33,7 +33,7 @@
         "SmartBulletHomingSpeed": 1.5
     },
     "Host": {
-        "EnableServicePointDisplay": false,
+        "EnableServicePointDisplay": true,
         "ServicePointDisplayMinFrameTimeMs": 28,
         "ClientScreenMinFrameTime": 5
     }