Implement TS bridge rendering.

OpenRA.Mods.Common/Traits/Buildings/BridgePlaceholder.cs

@@ -15,12 +15,13 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.Common.Traits
 {
-	[Desc("Placeholder actor that transforms into another actor type when repaired.")]
+	[Desc("Placeholder actor used for dead segments and bridge end ramps.")]
 	class BridgePlaceholderInfo : ITraitInfo
 	{
 		public readonly string Type = "GroundLevelBridge";
 
-		[FieldLoader.Require]
+		public readonly DamageState DamageState = DamageState.Undamaged;
+
 		[Desc("Actor type to replace with on repair.")]
 		[ActorReference] public readonly string ReplaceWithActor = null;
 
@@ -54,6 +55,9 @@ namespace OpenRA.Mods.Common.Traits
 
 		void IBridgeSegment.Repair(Actor repairer)
 		{
+			if (Info.ReplaceWithActor == null)
+				return;
+
 			self.World.AddFrameEndTask(w =>
 			{
 				self.Dispose();
@@ -68,11 +72,11 @@ namespace OpenRA.Mods.Common.Traits
 
 		void IBridgeSegment.Demolish(Actor saboteur)
 		{
-			// Do nothing, we're already dead
+			// Do nothing
 		}
 
 		string IBridgeSegment.Type { get { return Info.Type; } }
-		DamageState IBridgeSegment.DamageState { get { return DamageState.Dead; } }
+		DamageState IBridgeSegment.DamageState { get { return Info.DamageState; } }
 		bool IBridgeSegment.Valid { get { return self.IsInWorld; } }
 		CVec[] IBridgeSegment.NeighbourOffsets { get { return Info.NeighbourOffsets; } }
 		CPos IBridgeSegment.Location { get { return self.Location; } }

OpenRA.Mods.Common/Traits/Render/WithBridgeSpriteBody.cs

@@ -0,0 +1,130 @@
+#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.Linq;
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits.Render
+{
+	class WithBridgeSpriteBodyInfo : WithSpriteBodyInfo
+	{
+		public readonly string Type = "GroundLevelBridge";
+
+		[Desc("Offset to search for the 'A' neighbour")]
+		public readonly CVec AOffset = CVec.Zero;
+
+		[Desc("Position to search for the 'B' neighbour")]
+		public readonly CVec BOffset = CVec.Zero;
+
+		[SequenceReference]
+		[Desc("Sequences to use when both neighbours are alive.")]
+		public readonly string[] Sequences = { "idle" };
+
+		[SequenceReference]
+		public readonly string[] ADestroyedSequences = { "adestroyed" };
+
+		[SequenceReference]
+		public readonly string[] BDestroyedSequences = { "bdestroyed" };
+
+		[SequenceReference]
+		public readonly string[] ABDestroyedSequences = { "abdestroyed" };
+
+		public override object Create(ActorInitializer init) { return new WithBridgeSpriteBody(init, this); }
+
+		public override IEnumerable<IActorPreview> RenderPreviewSprites(ActorPreviewInitializer init, RenderSpritesInfo rs, string image, int facings, PaletteReference p)
+		{
+			var anim = new Animation(init.World, image);
+			anim.PlayFetchIndex(RenderSprites.NormalizeSequence(anim, init.GetDamageState(), Sequences.First()), () => 0);
+
+			yield return new SpriteActorPreview(anim, () => WVec.Zero, () => 0, p, rs.Scale);
+		}
+	}
+
+	class WithBridgeSpriteBody : WithSpriteBody, INotifyRemovedFromWorld
+	{
+		readonly WithBridgeSpriteBodyInfo bridgeInfo;
+		readonly BridgeLayer bridgeLayer;
+		readonly Actor self;
+
+		public WithBridgeSpriteBody(ActorInitializer init, WithBridgeSpriteBodyInfo info)
+			: base(init, info, () => 0)
+		{
+			self = init.Self;
+			bridgeInfo = info;
+			bridgeLayer = init.World.WorldActor.Trait<BridgeLayer>();
+		}
+
+		protected override void OnBuildComplete(Actor self)
+		{
+			if (bridgeInfo.AOffset != CVec.Zero)
+				UpdateNeighbour(bridgeInfo.AOffset);
+
+			if (bridgeInfo.BOffset != CVec.Zero)
+				UpdateNeighbour(bridgeInfo.BOffset);
+
+			SetDirty();
+		}
+
+		void UpdateNeighbour(CVec offset)
+		{
+			var neighbour = bridgeLayer[self.Location + offset];
+			if (neighbour == null)
+				return;
+
+			var body = neighbour.TraitOrDefault<WithBridgeSpriteBody>();
+			if (body != null && body.bridgeInfo.Type == bridgeInfo.Type)
+				body.SetDirty();
+		}
+
+		void INotifyRemovedFromWorld.RemovedFromWorld(Actor self)
+		{
+			UpdateNeighbour(bridgeInfo.AOffset);
+			UpdateNeighbour(bridgeInfo.BOffset);
+		}
+
+		void SetDirty()
+		{
+			self.World.AddFrameEndTask(w =>
+			{
+				var aDestroyed = bridgeInfo.AOffset != CVec.Zero && NeighbourIsDestroyed(bridgeInfo.AOffset);
+				var bDestroyed = bridgeInfo.BOffset != CVec.Zero && NeighbourIsDestroyed(bridgeInfo.BOffset);
+
+				var sequence = DefaultAnimation.CurrentSequence.Name;
+				if (aDestroyed && bDestroyed && bridgeInfo.ABDestroyedSequences.Any())
+					sequence = bridgeInfo.ABDestroyedSequences.Random(Game.CosmeticRandom);
+				else if (aDestroyed && bridgeInfo.ADestroyedSequences.Any())
+					sequence = bridgeInfo.ADestroyedSequences.Random(Game.CosmeticRandom);
+				else if (bDestroyed && bridgeInfo.BDestroyedSequences.Any())
+					sequence = bridgeInfo.BDestroyedSequences.Random(Game.CosmeticRandom);
+				else
+					sequence = bridgeInfo.Sequences.Random(Game.CosmeticRandom);
+
+				DefaultAnimation.PlayRepeating(NormalizeSequence(self, sequence));
+			});
+		}
+
+		bool NeighbourIsDestroyed(CVec offset)
+		{
+			var neighbour = bridgeLayer[self.Location + offset];
+			if (neighbour == null)
+				return false;
+
+			var segment = neighbour.TraitOrDefault<IBridgeSegment>();
+			if (segment == null)
+				return false;
+
+			return segment.DamageState == DamageState.Dead;
+		}
+	}
+}

OpenRA.Mods.Common/Traits/Render/WithDeadBridgeSpriteBody.cs

@@ -0,0 +1,100 @@
+#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.Linq;
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Traits.Render
+{
+	class WithDeadBridgeSpriteBodyInfo : WithSpriteBodyInfo
+	{
+		[ActorReference]
+		public readonly string[] RampActors = { };
+
+		[Desc("Offset to search for the 'A' neighbour")]
+		public readonly CVec AOffset = CVec.Zero;
+
+		[Desc("Position to search for the 'B' neighbour")]
+		public readonly CVec BOffset = CVec.Zero;
+
+		[SequenceReference]
+		public readonly string[] ARampSequences = { "aramp" };
+
+		[SequenceReference]
+		public readonly string[] BRampSequences = { "bramp" };
+
+		[SequenceReference]
+		public readonly string[] ABRampSequences = { "abramp" };
+
+		[SequenceReference]
+		[Desc("Placeholder sequence to use in the map editor.")]
+		public readonly string EditorSequence = "editor";
+
+		[PaletteReference]
+		[Desc("Palette to use for the editor placeholder.")]
+		public readonly string EditorPalette = "terrainalpha";
+
+		public override object Create(ActorInitializer init) { return new WithDeadBridgeSpriteBody(init, this); }
+
+		public override IEnumerable<IActorPreview> RenderPreviewSprites(ActorPreviewInitializer init, RenderSpritesInfo rs, string image, int facings, PaletteReference p)
+		{
+			var anim = new Animation(init.World, image);
+			var sequence = init.World.Type == WorldType.Editor ? EditorSequence : Sequence;
+			var palette = init.World.Type == WorldType.Editor ? init.WorldRenderer.Palette(EditorPalette) : p;
+			anim.PlayFetchIndex(RenderSprites.NormalizeSequence(anim, init.GetDamageState(), sequence), () => 0);
+			yield return new SpriteActorPreview(anim, () => WVec.Zero, () => 0, palette, rs.Scale);
+		}
+	}
+
+	class WithDeadBridgeSpriteBody : WithSpriteBody
+	{
+		readonly WithDeadBridgeSpriteBodyInfo bridgeInfo;
+		readonly BridgeLayer bridgeLayer;
+
+		public WithDeadBridgeSpriteBody(ActorInitializer init, WithDeadBridgeSpriteBodyInfo info)
+			: base(init, info, () => 0)
+		{
+			bridgeInfo = info;
+			bridgeLayer = init.World.WorldActor.Trait<BridgeLayer>();
+		}
+
+		bool RampExists(Actor self, CVec offset)
+		{
+			var neighbour = bridgeLayer[self.Location + offset];
+			if (neighbour == null)
+				return false;
+
+			return bridgeInfo.RampActors.Contains(neighbour.Info.Name);
+		}
+
+		protected override void OnBuildComplete(Actor self)
+		{
+			self.World.AddFrameEndTask(w =>
+			{
+				var aRamp = bridgeInfo.AOffset != CVec.Zero && RampExists(self, bridgeInfo.AOffset);
+				var bRamp = bridgeInfo.BOffset != CVec.Zero && RampExists(self, bridgeInfo.BOffset);
+
+				var sequence = DefaultAnimation.CurrentSequence.Name;
+				if (aRamp && bRamp && bridgeInfo.ABRampSequences.Any())
+					sequence = bridgeInfo.ABRampSequences.Random(Game.CosmeticRandom);
+				else if (aRamp && bridgeInfo.ARampSequences.Any())
+					sequence = bridgeInfo.ARampSequences.Random(Game.CosmeticRandom);
+				else if (bRamp && bridgeInfo.BRampSequences.Any())
+					sequence = bridgeInfo.BRampSequences.Random(Game.CosmeticRandom);
+
+				DefaultAnimation.PlayRepeating(NormalizeSequence(self, sequence));
+			});
+		}
+	}
+}