Adds WithBarrel trait.

OpenRA.Mods.RA/OpenRA.Mods.RA.csproj

@@ -440,6 +440,7 @@
     <Compile Include="Widgets\ColorMixerWidget.cs" />
     <Compile Include="Widgets\HueSliderWidget.cs" />
     <Compile Include="Render\WithTurret.cs" />
+    <Compile Include="Render\WithBarrel.cs" />
     <Compile Include="Widgets\Logic\AssetBrowserLogic.cs" />
     <Compile Include="VoxelNormalsPalette.cs" />
     <Compile Include="Render\RenderVoxels.cs" />

OpenRA.Mods.RA/Render/WithBarrel.cs

@@ -0,0 +1,102 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 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. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+using System.Linq;
+using OpenRA.Graphics;
+using OpenRA.Mods.RA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Render
+{
+	[Desc("Renders barrels for units with the Turreted trait.")]
+	class WithBarrelInfo : ITraitInfo, IRenderActorPreviewSpritesInfo, Requires<RenderSpritesInfo>, Requires<IBodyOrientationInfo>
+	{
+		[Desc("Sequence name to use")]
+		public readonly string Sequence = "barrel";
+
+		[Desc("Armament to use for recoil")]
+		public readonly string Armament = "primary";
+
+		[Desc("Turreted 'Barrel' key to display")]
+		public readonly string Barrel = "first";
+
+		[Desc("Visual offset")]
+		public readonly WVec LocalOffset = WVec.Zero;
+
+		public object Create(ActorInitializer init) { return new WithBarrel(init.self, this); }
+
+		public IEnumerable<IActorPreview> RenderPreviewSprites(ActorPreviewInitializer init, RenderSpritesInfo rs, string image, int facings, PaletteReference p)
+		{
+			var body = init.Actor.Traits.Get<BodyOrientationInfo>();
+			var armament = init.Actor.Traits.WithInterface<ArmamentInfo>()
+				.First(a => a.Name == Armament);
+			var t = init.Actor.Traits.WithInterface<TurretedInfo>()
+				.First(tt => tt.Turret == armament.Turret);
+
+			var anim = new Animation(init.World, image, () => t.InitialFacing);
+			anim.Play(Sequence);
+
+			var turretOrientation = body.QuantizeOrientation(new WRot(WAngle.Zero, WAngle.Zero, WAngle.FromFacing(t.InitialFacing)), facings);
+			var turretOffset = body.LocalToWorld(t.Offset.Rotate(turretOrientation));
+
+			yield return new SpriteActorPreview(anim, turretOffset, turretOffset.Y + turretOffset.Z, p, rs.Scale);
+		}
+	}
+
+	class WithBarrel
+	{
+		WithBarrelInfo info;
+		Actor self;
+		Armament armament;
+		Turreted turreted;
+		IBodyOrientation body;
+		Animation anim;
+
+		public WithBarrel(Actor self, WithBarrelInfo info)
+		{
+			this.self = self;
+			this.info = info;
+			body = self.Trait<IBodyOrientation>();
+			armament = self.TraitsImplementing<Armament>()
+				.First(a => a.Info.Name == info.Armament);
+			turreted = self.TraitsImplementing<Turreted>()
+				.First(tt => tt.Name == armament.Info.Turret);
+
+			var rs = self.Trait<RenderSprites>();
+			anim = new Animation(self.World, rs.GetImage(self), () => turreted.turretFacing);
+			anim.Play(info.Sequence);
+			rs.Add("barrel_{0}".F(info.Barrel), new AnimationWithOffset(
+				anim, () => BarrelOffset(), null, () => false, p => WithTurret.ZOffsetFromCenter(self, p, 0)));
+
+			// Restrict turret facings to match the sprite
+			turreted.QuantizedFacings = anim.CurrentSequence.Facings;
+		}
+
+		WVec BarrelOffset()
+		{
+			var localOffset = info.LocalOffset + new WVec(-armament.Recoil, WRange.Zero, WRange.Zero);
+			var turretOffset = turreted != null ? turreted.Position(self) : WVec.Zero;
+			var turretOrientation = turreted != null ? turreted.LocalOrientation(self) : WRot.Zero;
+
+			var quantizedBody = body.QuantizeOrientation(self, self.Orientation);
+			var quantizedTurret =  body.QuantizeOrientation(self, turretOrientation);
+			return turretOffset + body.LocalToWorld(localOffset.Rotate(quantizedTurret).Rotate(quantizedBody));
+		}
+
+		IEnumerable<WRot> BarrelRotation()
+		{
+			var b = self.Orientation;
+			var qb = body.QuantizeOrientation(self, b);
+			yield return turreted.LocalOrientation(self) + WRot.FromYaw(b.Yaw - qb.Yaw);
+			yield return qb;
+		}
+	}
+}

OpenRA.Mods.RA/Render/WithTurret.cs

@@ -16,7 +16,7 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.RA.Render
 {
-	[Desc("Renders barrels for units with the Turreted trait.")]
+	[Desc("Renders turrets for units with the Turreted trait.")]
 	class WithTurretInfo : ITraitInfo, IRenderActorPreviewSpritesInfo, Requires<RenderSpritesInfo>, Requires<TurretedInfo>, Requires<IBodyOrientationInfo>
 	{
 		[Desc("Sequence name to use")]