WIP. Spliting and pointing

src/blagario/AgarElements/Cell.cs

@@ -30,6 +30,7 @@ internal void Split()
             newPart.X = this.X.Value + 100;
             newPart.Y = this.Y.Value + 100;
             newPart._Mass = currentPart._Mass;
+            newPart.PointTo(currentPart.PointingXto, currentPart.PointingYto);
             this.Add(newPart);
         }
     }

src/blagario/AgarElements/MoveableAgarElement.cs

@@ -8,6 +8,9 @@ public class MoveableAgarElement: AgarElement
         protected double Vx {get; private set;} = 0;
         protected double Vy {get; private set;} = 0;
 
+        public double PointingXto {get; private set; };
+        public double PointingYto {get; private set; };
+
         public virtual double Vel {get; protected set;} = 1;
 
         public virtual void PointTo( double x, double y )
@@ -35,6 +38,9 @@ public virtual void PointTo( double x, double y )
             this.Vy = this.Vel * sinAlf;
             this.Vx = this.Vel * cosAlf;
 
+            PointingXto = x;
+            PointingYto = y;
+
         }
 
         public override async Task  Tic(int fpsTicNum) {

src/blagario/AgarElements/Player.cs

@@ -30,7 +30,7 @@ public void Play()
 
         }
 
-        private void OnTicEvent(object o, EventArgs e) => this.Tic();
+        private void OnTicEvent(object o, WorldTicEventArgs e) => this.Tic(e.FpsTicNum);
 
         public Cell Cell {get; private set;}
 
@@ -81,7 +81,7 @@ internal void PointTo(double bx, double by)
             Cell.PointTo(bx, by);
         }
 
-        public void Tic()
+        public void Tic(int fpsTicNum)
         {
             this.Cell.Purge();
 
@@ -101,6 +101,11 @@ public void Tic()
                 DeltaZoom -= d;
                 Zoom += d;
             }
+
+            if ( (fpsTicNum+8) % TimedHostedService.fps == 0)
+            {                
+                Task.Run( async () => await SetFocusToUniverse() );
+            }
         }
 
         /* --- */
@@ -158,6 +163,12 @@ public async Task CheckVisibleArea(IJSRuntime jsRuntime = null)
             await JsRuntime.InvokeAsync<object>("AreaResized", CreateDotNetObjectRef(this) );
         }            
 
+        public async Task SetFocusToUniverse(IJSRuntime jsRuntime = null)
+        {
+            JsRuntime = jsRuntime ?? JsRuntime;
+            await JsRuntime.InvokeAsync<object>("SetFocusToUniverse");
+        }   
+
         #region Hack to fix https://github.com/aspnet/AspNetCore/issues/11159
 
         public static object CreateDotNetObjectRefSyncObj = new object();

src/blagario/AgarElements/World.cs

@@ -6,6 +6,11 @@
 namespace blagario.elements
 {
 
+    public class WorldTicEventArgs: EventArgs
+    {
+        public int FpsTicNum {set;get;}
+    }
+
     public class World : AgarElement
     {
         public List<AgarElement> Elements;
@@ -36,11 +41,11 @@ public World(Universe universe)
         public IEnumerable<CellPart> Leaderboard => Elements.Where(x => x.ElementType == ElementType.CellPart ).Select(x=> x as CellPart).OrderByDescending(x => x._Mass ).Take(10);
 
 
-        public event EventHandler OnTicReached;
+        public event EventHandler<WorldTicEventArgs> OnTicReached;
 
-        protected virtual void OnTic(EventArgs e)
+        protected virtual void OnTic(WorldTicEventArgs e)
         {
-            EventHandler handler = OnTicReached;
+            var handler = OnTicReached;
             handler?.Invoke(this, e);
         }
         public override async Task Tic(int fpsTicNum)
@@ -67,7 +72,7 @@ public override async Task Tic(int fpsTicNum)
 
             await base.Tic(fpsTicNum);
 
-            OnTic( EventArgs.Empty );
+            OnTic( new WorldTicEventArgs {FpsTicNum=fpsTicNum} );
         }
 
         private List<AgarElement> FillWorld(ElementType elementType)

src/blagario/Pages/Index.cs

@@ -79,7 +79,9 @@ protected async override Task OnAfterRenderAsync()
         }
         protected async Task OnAfterFirstRenderAsync()
         {
-            await Player.CheckVisibleArea(JsRuntime);
+            await Player.CheckVisibleArea(JsRuntime);    
+            await Player.SetFocusToUniverse(JsRuntime);
         }
+
     }
 }

src/blagario/Pages/Index.razor

@@ -9,7 +9,8 @@
     @onmousemove="@TrackMouse"
     @onmousewheel="@MouseWheel"
     @onkeydown="@KeyDown"
-    @onclick="@OnClick"
+    tabindex="0"
+    id="universe"
 >
     <!-- This is the world. Where the virus, cells and other elements live. -->
     <div 

src/blagario/Pages/_Host.cshtml

@@ -31,6 +31,10 @@
             return [ x , y ];
         };
 
+        window.SetFocusToUniverse = () => {
+            console.log("setting focus");
+            document.getElementById("universe").focus();
+        };
     </script>
 
 </body>