add in keyword to Spawn

content/pong/ball/bouncing/boundaries.md

@@ -41,7 +41,7 @@ namespace PongFE.Spawners
 {
     public class BoundarySpawner : Spawner<BoundarySpawnMessage>
     {
-        protected override void Spawn(BoundarySpawnMessage message)
+        protected override void Spawn(in BoundarySpawnMessage message)
         {
             var entity = CreateEntity();
 

content/pong/ball/moving.md

@@ -127,7 +127,7 @@ namespace PongFE.Spawners
             BallTexture = ballTexture;
         }
 
-        protected override void Spawn(BallSpawnMessage message)
+        protected override void Spawn(in BallSpawnMessage message)
         {
             var ball = CreateEntity();
             AddComponent(ball, new PositionComponent(message.Position));

content/pong/ball/revisiting_spawners.md

@@ -169,7 +169,7 @@ namespace PongFE.Spawners
             PaddleTexture = paddleTexture;
         }
 
-        protected override void Spawn(PaddleSpawnMessage message)
+        protected override void Spawn(in PaddleSpawnMessage message)
         {
             var paddle = CreateEntity();
             AddComponent(paddle, new Texture2DComponent(PaddleTexture, 0));
@@ -245,7 +245,7 @@ namespace PongFE.Spawners
             WhitePixel = whitePixel;
         }
 
-        protected override void Spawn(PaddleSpawnMessage message)
+        protected override void Spawn(in PaddleSpawnMessage message)
         {
             var paddle = CreateEntity();
             AddComponent(paddle, new PlayerInputComponent(message.PlayerIndex));
@@ -324,7 +324,7 @@ namespace PongFE.Spawners
             WhitePixel = whitePixel;
         }
 
-        protected override void Spawn(BallSpawnMessage message)
+        protected override void Spawn(in BallSpawnMessage message)
         {
             var ball = CreateEntity();
             AddComponent(ball, new PositionComponent(message.Position));

content/pong/ball/spawning.md

@@ -75,7 +75,7 @@ namespace PongFE.Spawners
             BallTexture = ballTexture;
         }
 
-        protected override void Spawn(BallSpawnMessage message)
+        protected override void Spawn(in BallSpawnMessage message)
         {
             var ball = CreateEntity();
             SetComponent(ball, new PositionComponent(new MoonTools.Structs.Position2D(640, 360)));
@@ -136,7 +136,7 @@ namespace PongFE.Spawners
             BallTexture = ballTexture;
         }
 
-        protected override void Spawn(BallSpawnMessage message)
+        protected override void Spawn(in BallSpawnMessage message)
         {
             var ball = CreateEntity();
             AddComponent(ball, new PositionComponent(new MoonTools.Structs.Position2D(640, 360)));

content/pong/polish/win_condition.md

@@ -68,7 +68,7 @@ namespace PongFE.Spawners
 {
     public class UITextSpawner : Spawner<UITextSpawnMessage>
     {
-        protected override void Spawn(UITextSpawnMessage message)
+        protected override void Spawn(in UITextSpawnMessage message)
         {
             var entity = CreateEntity();
 

content/pong/scoring/drawing_score.md

@@ -83,7 +83,7 @@ namespace PongFE.Spawners
 {
     public class GoalBoundarySpawner : Spawner<GoalBoundarySpawnMessage>
     {
-        protected override void Spawn(GoalBoundarySpawnMessage message)
+        protected override void Spawn(in GoalBoundarySpawnMessage message)
         {
             var entity = CreateEntity();
 

content/pong/scoring/goal_collision.md

@@ -172,7 +172,7 @@ namespace PongFE.Spawners
 {
     public class GoalBoundarySpawner : Spawner<GoalBoundarySpawnMessage>
     {
-        protected override void Spawn(GoalBoundarySpawnMessage message)
+        protected override void Spawn(in GoalBoundarySpawnMessage message)
         {
             var entity = CreateEntity();
 

content/pong/scoring/tracking_score.md

@@ -252,7 +252,7 @@ namespace PongFE.Spawners
             WhitePixel = whitePixel;
         }
 
-        protected override void Spawn(PaddleSpawnMessage message)
+        protected override void Spawn(in PaddleSpawnMessage message)
         {
             var paddle = CreateEntity();
             if (message.PaddleControl == PaddleControl.Player)