blinking ready checkbox when all slots are taken

OpenRA.Game/Widgets/CheckboxWidget.cs

@@ -42,6 +42,7 @@ namespace OpenRA.Widgets
 		public override void Draw()
 		{
 			var disabled = IsDisabled();
+			var highlighted = IsHighlighted();
 			var font = Game.Renderer.Fonts[Font];
 			var color = GetColor();
 			var colordisabled = GetColorDisabled();
@@ -50,6 +51,7 @@ namespace OpenRA.Widgets
 			var textSize = font.Measure(Text);
 			var check = new Rectangle(rect.Location, new Size(Bounds.Height, Bounds.Height));
 			var state = disabled ? "checkbox-disabled" :
+						highlighted ? "checkbox-highlighted" :
 						Depressed && HasPressedState ? "checkbox-pressed" :
 						Ui.MouseOverWidget == this ? "checkbox-hover" :
 						"checkbox";

OpenRA.Mods.RA/Widgets/Logic/LobbyLogic.cs

@@ -284,6 +284,14 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 				};
 			}
 
+			var statusCheckbox = lobby.GetOrNull<CheckboxWidget>("STATUS_CHECKBOX");
+			if (statusCheckbox != null)
+			{
+				statusCheckbox.IsHighlighted = () => !statusCheckbox.IsChecked() &&
+					orderManager.LobbyInfo.FirstEmptySlot() == null && 
+					world.FrameNumber / 25 % 2 == 0;
+			}
+
 			// Options panel
 			var allowCheats = optionsBin.GetOrNull<CheckboxWidget>("ALLOWCHEATS_CHECKBOX");
 			if (allowCheats != null)

mods/cnc/chrome.yaml

@@ -315,6 +315,18 @@ checkbox-pressed: chrome.png
 	corner-bl: 64,254,2,2
 	corner-br: 126,254,2,2
 
+# A copy of button-highlighted-pressed
+checkbox-highlighted: chrome.png
+	background: 257,161,30,30
+	border-r: 287,161,1,30
+	border-l: 256,161,1,30
+	border-b: 257,191,30,1
+	border-t: 257,160,30,1
+	corner-tl: 256,160,1,1
+	corner-tr: 287,160,1,1
+	corner-bl: 256,191,1,1
+	corner-br: 287,191,1,1
+
 panel-black: chrome.png
 	background: 66,2,60,60
 	border-r: 126,2,2,60

mods/d2k/chrome.yaml

@@ -544,7 +544,19 @@ checkbox-disabled: dialog.png
 	corner-tr: 767,256,1,1
 	corner-bl: 640,383,1,1
 	corner-br: 767,383,1,1
-	
+
+# Same as button-highlighted-pressed
+checkbox-highlighted: dialog.png
+	background: 897,1,126,126
+	border-r: 1023,1,1,126
+	border-l: 896,1,1,126
+	border-b: 897,127,126,1
+	border-t: 897,0,126,1
+	corner-tl: 896,0,1,1
+	corner-tr: 1023,0,1,1
+	corner-bl: 896,127,1,1
+	corner-br: 1023,127,1,1
+
 # A copy of dialog3 (pressed button)
 scrollitem-selected: dialog.png
 	background: 641,1,126,126
@@ -556,7 +568,7 @@ scrollitem-selected: dialog.png
 	corner-tr: 767,0,1,1
 	corner-bl: 640,127,1,1
 	corner-br: 767,127,1,1
-	
+
 # A copy of dialog2 (normal button)
 scrollitem-hover: dialog.png
 	background: 513,1,126,126

mods/ra/chrome.yaml

@@ -495,6 +495,18 @@ checkbox-disabled: dialog.png
 	corner-bl: 640,383,1,1
 	corner-br: 767,383,1,1
 
+# Same as button-highlighted-pressed
+checkbox-highlighted: dialog.png
+	background: 897,1,126,126
+	border-r: 1023,1,1,126
+	border-l: 896,1,1,126
+	border-b: 897,127,126,1
+	border-t: 897,0,126,1
+	corner-tl: 896,0,1,1
+	corner-tr: 1023,0,1,1
+	corner-bl: 896,127,1,1
+	corner-br: 1023,127,1,1
+
 # A copy of dialog3 (pressed button)
 scrollitem-selected: dialog.png
 	background: 641,1,126,126

mods/ts/chrome.yaml

@@ -314,9 +314,9 @@ button-highlighted-pressed: dialog.png
 	corner-tl: 896,0,1,1
 	corner-tr: 1023,0,1,1
 	corner-bl: 896,127,1,1
-	corner-br: 1023,127,1,1	
+	corner-br: 1023,127,1,1
 
-# A copy of	button-highlighted
+# A copy of button-highlighted
 button-highlighted-disabled: dialog.png
 	background: 769,1,126,126
 	border-r: 639,1,1,126
@@ -388,7 +388,7 @@ textfield: dialog.png
 	corner-bl: 640,127,1,1
 	corner-br: 767,127,1,1
 
-# A copy of checkbox-hover 
+# A copy of checkbox-hover
 textfield-hover: dialog.png
 	background: 641,129,126,126
 	border-r: 767,129,1,126
@@ -488,7 +488,19 @@ checkbox-disabled: dialog.png
 	corner-tr: 767,256,1,1
 	corner-bl: 640,383,1,1
 	corner-br: 767,383,1,1
-	
+
+# Same as a button-highlighted-pressed
+checkbox-highlighted: dialog.png
+	background: 897,1,126,126
+	border-r: 1023,1,1,126
+	border-l: 896,1,1,126
+	border-b: 897,127,126,1
+	border-t: 897,0,126,1
+	corner-tl: 896,0,1,1
+	corner-tr: 1023,0,1,1
+	corner-bl: 896,127,1,1
+	corner-br: 1023,127,1,1
+
 # A copy of dialog3 (pressed button)
 scrollitem-selected: dialog.png
 	background: 641,1,126,126
@@ -500,7 +512,7 @@ scrollitem-selected: dialog.png
 	corner-tr: 767,0,1,1
 	corner-bl: 640,127,1,1
 	corner-br: 767,127,1,1
-	
+
 # A copy of dialog2 (normal button)
 scrollitem-hover: dialog.png
 	background: 513,1,126,126