Add a script trigger overlay.

OpenRA.Game/Traits/TraitsInterfaces.cs

@@ -216,6 +216,7 @@ namespace OpenRA.Traits
 		void AddInfluence(Actor self, IOccupySpace ios);
 		void RemoveInfluence(Actor self, IOccupySpace ios);
 		int AddCellTrigger(CPos[] cells, Action<Actor> onEntry, Action<Actor> onExit);
+		IEnumerable<CPos> TriggerPositions();
 		void RemoveCellTrigger(int id);
 		int AddProximityTrigger(WPos pos, WDist range, WDist vRange, Action<Actor> onEntry, Action<Actor> onExit);
 		void RemoveProximityTrigger(int id);

OpenRA.Mods.Common/Traits/World/ActorMap.cs

@@ -522,6 +522,11 @@ namespace OpenRA.Mods.Common.Traits
 			return id;
 		}
 
+		public IEnumerable<CPos> TriggerPositions()
+		{
+			return cellTriggerInfluence.Keys;
+		}
+
 		public void RemoveCellTrigger(int id)
 		{
 			if (!cellTriggers.TryGetValue(id, out var trigger))

OpenRA.Mods.Common/Traits/World/CellTriggerOverlay.cs

@@ -0,0 +1,89 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2022 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version. For more
+ * information, see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.Commands;
+using OpenRA.Mods.Common.Graphics;
+using OpenRA.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	[TraitLocation(SystemActors.World)]
+	[Desc("Renders a debug overlay showing the script triggers. Attach this to the world actor.")]
+	public class CellTriggerOverlayInfo : TraitInfo
+	{
+		public readonly string Font = "BigBold";
+
+		public readonly Color Color = Color.Red;
+
+		public override object Create(ActorInitializer init) { return new CellTriggerOverlay(this); }
+	}
+
+	public class CellTriggerOverlay : IRenderAnnotations, IWorldLoaded, IChatCommand
+	{
+		const string CommandName = "triggers";
+		const string CommandDesc = "toggles the script triggers overlay.";
+
+		bool enabled;
+
+		readonly SpriteFont font;
+		readonly Color color;
+
+		public CellTriggerOverlay(CellTriggerOverlayInfo info)
+		{
+			font = Game.Renderer.Fonts[info.Font];
+			color = info.Color;
+		}
+
+		void IWorldLoaded.WorldLoaded(World w, WorldRenderer wr)
+		{
+			var console = w.WorldActor.TraitOrDefault<ChatCommands>();
+			var help = w.WorldActor.TraitOrDefault<HelpCommand>();
+
+			if (console == null || help == null)
+				return;
+
+			console.RegisterCommand(CommandName, this);
+			help.RegisterHelp(CommandName, CommandDesc);
+		}
+
+		void IChatCommand.InvokeCommand(string name, string arg)
+		{
+			if (name == CommandName)
+				enabled ^= true;
+		}
+
+		IEnumerable<IRenderable> IRenderAnnotations.RenderAnnotations(Actor self, WorldRenderer wr)
+		{
+			if (!enabled)
+				yield break;
+
+			var triggerPositions = wr.World.ActorMap.TriggerPositions().ToHashSet();
+
+			foreach (var uv in wr.Viewport.VisibleCellsInsideBounds.CandidateMapCoords)
+			{
+				if (self.World.ShroudObscures(uv))
+					continue;
+
+				var cell = uv.ToCPos(wr.World.Map);
+				if (!triggerPositions.Contains(cell))
+					continue;
+
+				var center = wr.World.Map.CenterOfCell(cell);
+				yield return new TextAnnotationRenderable(font, center, 1024, color, "T");
+			}
+		}
+
+		bool IRenderAnnotations.SpatiallyPartitionable => false;
+	}
+}

mods/cnc/rules/world.yaml

@@ -264,6 +264,7 @@ World:
 	LoadWidgetAtGameStart:
 		ShellmapRoot: MENU_BACKGROUND
 	ScriptTriggers:
+	CellTriggerOverlay:
 	TimeLimitManager:
 	ColorPickerManager:
 		PreviewActor: fact.colorpicker

mods/d2k/rules/world.yaml

@@ -234,6 +234,7 @@ World:
 		PanelName: SKIRMISH_STATS
 	LoadWidgetAtGameStart:
 	ScriptTriggers:
+	CellTriggerOverlay:
 	StartGameNotification:
 	TimeLimitManager:
 	ColorPickerManager:

mods/ra/rules/world.yaml

@@ -275,6 +275,7 @@ World:
 		PanelName: SKIRMISH_STATS
 	LoadWidgetAtGameStart:
 	ScriptTriggers:
+	CellTriggerOverlay:
 	TimeLimitManager:
 		TimeLimitWarnings:
 			40: FourtyMinutesRemaining

mods/ts/rules/world.yaml

@@ -380,6 +380,7 @@ World:
 	LoadWidgetAtGameStart:
 		ShellmapRoot: MAINMENU_PRERELEASE_NOTIFICATION
 	ScriptTriggers:
+	CellTriggerOverlay:
 	TimeLimitManager:
 	ColorPickerManager:
 		PreviewActor: harv.colorpicker