Port GrantUpgradePower to GrantExternalConditionPower.

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

@@ -0,0 +1,155 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2016 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 System.Drawing;
+using System.Linq;
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.Graphics;
+using OpenRA.Mods.Common.Traits.Render;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits
+{
+	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 upgrade (in ticks). Set to 0 for a permanent condition.")]
+		public readonly int Duration = 0;
+
+		[Desc("Cells - affects whole cells only")]
+		public readonly int Range = 1;
+
+		[Desc("Sound to instantly play at the targeted area.")]
+		public readonly string OnFireSound = null;
+
+		[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 override object Create(ActorInitializer init) { return new GrantExternalConditionPower(init.Self, this); }
+	}
+
+	class GrantExternalConditionPower : SupportPower
+	{
+		readonly GrantExternalConditionPowerInfo info;
+
+		public GrantExternalConditionPower(Actor self, GrantExternalConditionPowerInfo info)
+			: base(self, info)
+		{
+			this.info = info;
+		}
+
+		public override void SelectTarget(Actor self, string order, SupportPowerManager manager)
+		{
+			Game.Sound.PlayToPlayer(manager.Self.Owner, Info.SelectTargetSound);
+			self.World.OrderGenerator = new SelectUpgradeTarget(Self.World, order, manager, this);
+		}
+
+		public override void Activate(Actor self, Order order, SupportPowerManager manager)
+		{
+			base.Activate(self, order, manager);
+
+			var wsb = self.TraitOrDefault<WithSpriteBody>();
+			if (wsb != null && wsb.DefaultAnimation.HasSequence(info.Sequence))
+				wsb.PlayCustomAnimation(self, info.Sequence, () => wsb.CancelCustomAnimation(self));
+
+			Game.Sound.Play(info.OnFireSound, self.World.Map.CenterOfCell(order.TargetLocation));
+
+			foreach (var a in UnitsInRange(order.TargetLocation))
+			{
+				var um = a.TraitOrDefault<UpgradeManager>();
+
+				// Condition token is ignored because we never revoke this condition.
+				if (um != null)
+					um.GrantCondition(a, info.Condition, true, info.Duration);
+			}
+		}
+
+		public IEnumerable<Actor> UnitsInRange(CPos xy)
+		{
+			var range = info.Range;
+			var tiles = Self.World.Map.FindTilesInCircle(xy, range);
+			var units = new List<Actor>();
+			foreach (var t in tiles)
+				units.AddRange(Self.World.ActorMap.GetActorsAt(t));
+
+			return units.Distinct().Where(a =>
+			{
+				if (!a.Owner.IsAlliedWith(Self.Owner))
+					return false;
+
+				var um = a.TraitOrDefault<UpgradeManager>();
+				return um != null && um.AcceptsExternalCondition(a, info.Condition);
+			});
+		}
+
+		class SelectUpgradeTarget : IOrderGenerator
+		{
+			readonly GrantExternalConditionPower power;
+			readonly int range;
+			readonly Sprite tile;
+			readonly SupportPowerManager manager;
+			readonly string order;
+
+			public SelectUpgradeTarget(World world, string order, SupportPowerManager manager, GrantExternalConditionPower power)
+			{
+				// Clear selection if using Left-Click Orders
+				if (Game.Settings.Game.UseClassicMouseStyle)
+					manager.Self.World.Selection.Clear();
+
+				this.manager = manager;
+				this.order = order;
+				this.power = power;
+				range = power.info.Range;
+				tile = world.Map.Rules.Sequences.GetSequence("overlay", "target-select").GetSprite(0);
+			}
+
+			public IEnumerable<Order> Order(World world, CPos cell, int2 worldPixel, MouseInput mi)
+			{
+				world.CancelInputMode();
+				if (mi.Button == MouseButton.Left && power.UnitsInRange(cell).Any())
+					yield return new Order(order, manager.Self, false) { TargetLocation = cell, SuppressVisualFeedback = true };
+			}
+
+			public void Tick(World world)
+			{
+				// Cancel the OG if we can't use the power
+				if (!manager.Powers.ContainsKey(order))
+					world.CancelInputMode();
+			}
+
+			public IEnumerable<IRenderable> RenderAboveShroud(WorldRenderer wr, World world)
+			{
+				var xy = wr.Viewport.ViewToWorld(Viewport.LastMousePos);
+				foreach (var unit in power.UnitsInRange(xy))
+					yield return new SelectionBoxRenderable(unit, Color.Red);
+			}
+
+			public IEnumerable<IRenderable> Render(WorldRenderer wr, World world)
+			{
+				var xy = wr.Viewport.ViewToWorld(Viewport.LastMousePos);
+				var pal = wr.Palette(TileSet.TerrainPaletteInternalName);
+
+				foreach (var t in world.Map.FindTilesInCircle(xy, range))
+					yield return new SpriteRenderable(tile, wr.World.Map.CenterOfCell(t), WVec.Zero, -511, pal, 1f, true);
+			}
+
+			public string GetCursor(World world, CPos cell, int2 worldPixel, MouseInput mi)
+			{
+				return power.UnitsInRange(cell).Any() ? "ability" : "move-blocked";
+			}
+		}
+	}
+}