Initial commit: OpenRA game engine

Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

OpenRA.Mods.Common/Traits/SupportPowers/GrantExternalConditionPower.cs

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+#region Copyright & License Information
+/*
+ * Copyright (c) The OpenRA Developers and Contributors
+ * 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 System.Linq;
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.Orders;
+using OpenRA.Mods.Common.Traits.Render;
+using OpenRA.Primitives;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	public class GrantExternalConditionPowerInfo : SupportPowerInfo
+	{
+		[FieldLoader.Require]
+		[Desc("The condition to apply. Must be included in the target actor's ExternalConditions list.")]
+		public readonly string Condition = null;
+
+		[Desc("Duration of the condition (in ticks). Set to 0 for a permanent condition.")]
+		public readonly int Duration = 0;
+
+		[FieldLoader.Require]
+		[Desc("Size of the footprint of the affected area.")]
+		public readonly CVec Dimensions = CVec.Zero;
+
+		[FieldLoader.Require]
+		[Desc("Actual footprint. Cells marked as x will be affected.")]
+		public readonly string Footprint = string.Empty;
+
+		[Desc("Sound to instantly play at the targeted area.")]
+		public readonly string OnFireSound = null;
+
+		[Desc("Player relationships which condition can be applied to.")]
+		public readonly PlayerRelationship ValidRelationships = PlayerRelationship.Ally;
+
+		[SequenceReference]
+		[Desc("Sequence to play for granting actor when activated.",
+			"This requires the actor to have the WithSpriteBody trait or one of its derivatives.")]
+		public readonly string Sequence = "active";
+
+		public readonly string FootprintImage = "overlay";
+
+		[SequenceReference(nameof(FootprintImage))]
+		public readonly string FootprintSequence = "target-select";
+
+		public override object Create(ActorInitializer init) { return new GrantExternalConditionPower(init.Self, this); }
+	}
+
+	public class GrantExternalConditionPower : SupportPower
+	{
+		readonly GrantExternalConditionPowerInfo info;
+		readonly char[] footprint;
+
+		public GrantExternalConditionPower(Actor self, GrantExternalConditionPowerInfo info)
+			: base(self, info)
+		{
+			this.info = info;
+			footprint = info.Footprint.Where(c => !char.IsWhiteSpace(c)).ToArray();
+		}
+
+		public override void SelectTarget(Actor self, string order, SupportPowerManager manager)
+		{
+			self.World.OrderGenerator = new SelectConditionTarget(Self.World, order, manager, this);
+		}
+
+		public override void Activate(Actor self, Order order, SupportPowerManager manager)
+		{
+			base.Activate(self, order, manager);
+			PlayLaunchSounds();
+
+			var wsb = self.TraitOrDefault<WithSpriteBody>();
+			if (wsb != null && wsb.DefaultAnimation.HasSequence(info.Sequence))
+				wsb.PlayCustomAnimation(self, info.Sequence);
+
+			Game.Sound.Play(SoundType.World, info.OnFireSound, order.Target.CenterPosition);
+
+			foreach (var a in UnitsInRange(self.World.Map.CellContaining(order.Target.CenterPosition)))
+				a.TraitsImplementing<ExternalCondition>()
+					.FirstOrDefault(t => t.Info.Condition == info.Condition && t.CanGrantCondition(self))
+					?.GrantCondition(a, self, info.Duration);
+		}
+
+		public IEnumerable<Actor> UnitsInRange(CPos xy)
+		{
+			var tiles = CellsMatching(xy, footprint, info.Dimensions);
+			var units = new HashSet<Actor>();
+			foreach (var t in tiles)
+				foreach (var a in Self.World.ActorMap.GetActorsAt(t))
+					units.Add(a);
+
+			return units.Where(a =>
+			{
+				if (!info.ValidRelationships.HasRelationship(Self.Owner.RelationshipWith(a.Owner)))
+					return false;
+
+				return a.TraitsImplementing<ExternalCondition>()
+					.Any(t => t.Info.Condition == info.Condition && t.CanGrantCondition(Self));
+			});
+		}
+
+		sealed class SelectConditionTarget : OrderGenerator
+		{
+			protected override MouseActionType ActionType => MouseActionType.SupportPower;
+			readonly GrantExternalConditionPower power;
+			readonly char[] footprint;
+			readonly CVec dimensions;
+			readonly Sprite tile;
+			readonly float alpha;
+			readonly SupportPowerManager manager;
+			readonly string order;
+
+			public SelectConditionTarget(World world, string order, SupportPowerManager manager, GrantExternalConditionPower power)
+				: base(world)
+			{
+				this.manager = manager;
+				this.order = order;
+				this.power = power;
+				footprint = power.info.Footprint.Where(c => !char.IsWhiteSpace(c)).ToArray();
+				dimensions = power.info.Dimensions;
+
+				var sequence = world.Map.Sequences.GetSequence(power.info.FootprintImage, power.info.FootprintSequence);
+				tile = sequence.GetSprite(0);
+				alpha = sequence.GetAlpha(0);
+			}
+
+			protected override IEnumerable<Order> OrderInner(World world, CPos cell, int2 worldPixel, MouseInput mi)
+			{
+				world.CancelInputMode();
+				if (power.UnitsInRange(cell).Any())
+					yield return new Order(order, manager.Self, Target.FromCell(world, cell), false) { SuppressVisualFeedback = true };
+			}
+
+			protected override void Tick(World world)
+			{
+				// Cancel the OG if we can't use the power
+				if (!manager.Powers.TryGetValue(order, out var p) || !p.Active || !p.Ready)
+					world.CancelInputMode();
+			}
+
+			protected override IEnumerable<IRenderable> RenderAboveShroud(WorldRenderer wr, World world) { yield break; }
+
+			protected override IEnumerable<IRenderable> RenderAnnotations(WorldRenderer wr, World world)
+			{
+				var xy = wr.Viewport.ViewToWorld(Viewport.LastMousePos);
+				foreach (var unit in power.UnitsInRange(xy))
+				{
+					var decorations = unit.TraitsImplementing<ISelectionDecorations>().FirstEnabledTraitOrDefault();
+					if (decorations != null)
+						foreach (var d in decorations.RenderSelectionAnnotations(unit, wr, Color.Red))
+							yield return d;
+				}
+			}
+
+			protected override IEnumerable<IRenderable> Render(WorldRenderer wr, World world)
+			{
+				var xy = wr.Viewport.ViewToWorld(Viewport.LastMousePos);
+				var pal = wr.Palette(TileSet.TerrainPaletteInternalName);
+
+				foreach (var t in power.CellsMatching(xy, footprint, dimensions))
+					yield return new SpriteRenderable(tile, wr.World.Map.CenterOfCell(t), WVec.Zero, -511, pal, 1f, alpha, float3.Ones, TintModifiers.IgnoreWorldTint, true);
+			}
+
+			protected override string GetCursor(World world, CPos cell, int2 worldPixel, MouseInput mi)
+			{
+				return power.UnitsInRange(cell).Any() ? power.info.Cursor : power.info.BlockedCursor;
+			}
+		}
+	}
+}