Merge pull request #8749 from Mailaender/lint-palettes

Added a lint rule for palette references

OpenRA.Game/Traits/LintAttributes.cs

@@ -43,4 +43,11 @@ namespace OpenRA.Traits
 
 	[AttributeUsage(AttributeTargets.Field)]
 	public sealed class UpgradeUsedReferenceAttribute : Attribute { }
+
+	[AttributeUsage(AttributeTargets.Field)]
+	public sealed class PaletteDefinitionAttribute : Attribute { }
+
+	// TODO: differentiate player palettes
+	[AttributeUsage(AttributeTargets.Field)]
+	public sealed class PaletteReferenceAttribute : Attribute { }
 }

OpenRA.Game/Traits/Player/FixedColorPalette.cs

@@ -16,15 +16,20 @@ namespace OpenRA.Traits
 	public class FixedColorPaletteInfo : ITraitInfo
 	{
 		[Desc("The name of the palette to base off.")]
-		public readonly string Base = "terrain";
+		[PaletteReference] public readonly string Base = "terrain";
+
 		[Desc("The name of the resulting palette")]
-		public readonly string Name = "resources";
+		[PaletteDefinition] public readonly string Name = "resources";
+
 		[Desc("Remap these indices to pre-defined colors.")]
 		public readonly int[] RemapIndex = { };
+
 		[Desc("The fixed color to remap.")]
 		public readonly HSLColor Color;
+
 		[Desc("Luminosity range to span.")]
 		public readonly float Ramp = 0.05f;
+
 		[Desc("Allow palette modifiers to change the palette.")]
 		public readonly bool AllowModifiers = true;
 

OpenRA.Game/Traits/Player/PlayerColorPalette.cs

@@ -17,13 +17,17 @@ namespace OpenRA.Traits
 	public class PlayerColorPaletteInfo : ITraitInfo
 	{
 		[Desc("The name of the palette to base off.")]
-		public readonly string BasePalette = null;
+		[PaletteReference] public readonly string BasePalette = null;
+
 		[Desc("The prefix for the resulting player palettes")]
 		public readonly string BaseName = "player";
+
 		[Desc("Remap these indices to player colors.")]
 		public readonly int[] RemapIndex = { };
+
 		[Desc("Luminosity range to span.")]
 		public readonly float Ramp = 0.05f;
+
 		[Desc("Allow palette modifiers to change the palette.")]
 		public readonly bool AllowModifiers = true;
 

OpenRA.Game/Traits/World/ResourceType.cs

@@ -17,7 +17,7 @@ namespace OpenRA.Traits
 	{
 		public readonly string Sequence = "resources";
 		[SequenceReference("Sequence")] public readonly string[] Variants = { };
-		public readonly string Palette = "terrain";
+		[PaletteReference] public readonly string Palette = "terrain";
 		public readonly int ResourceType = 1;
 
 		public readonly int ValuePerUnit = 0;

OpenRA.Mods.Cnc/Traits/SupportPowers/IonCannonPower.cs

@@ -27,7 +27,7 @@ namespace OpenRA.Mods.Cnc.Traits
 
 		[Desc("Effect sequence to display")]
 		public readonly string Effect = "ionsfx";
-		public readonly string EffectPalette = "effect";
+		[PaletteReference] public readonly string EffectPalette = "effect";
 
 		[Desc("Which weapon to fire"), WeaponReference]
 		public readonly string Weapon = "IonCannon";

OpenRA.Mods.Common/Effects/Bullet.cs

@@ -35,13 +35,13 @@ namespace OpenRA.Mods.Common.Effects
 		[SequenceReference("Image")] public readonly string Sequence = "idle";
 
 		[Desc("The palette used to draw this projectile.")]
-		public readonly string Palette = "effect";
+		[PaletteReference] public readonly string Palette = "effect";
 
 		[Desc("Does this projectile have a shadow?")]
 		public readonly bool Shadow = false;
 
 		[Desc("Palette to use for this projectile's shadow if Shadow is true.")]
-		public readonly string ShadowPalette = "shadow";
+		[PaletteReference] public readonly string ShadowPalette = "shadow";
 
 		[Desc("Trail animation.")]
 		public readonly string Trail = null;

OpenRA.Mods.Common/Effects/GravityBomb.cs

@@ -26,7 +26,7 @@ namespace OpenRA.Mods.Common.Effects
 		[Desc("Sequence to play when launched. Skipped if null or empty.")]
 		[SequenceReference("Image")] public readonly string OpenSequence = null;
 
-		public readonly string Palette = "effect";
+		[PaletteReference] public readonly string Palette = "effect";
 
 		public readonly bool Shadow = false;
 

OpenRA.Mods.Common/Effects/LaserZap.cs

@@ -36,7 +36,7 @@ namespace OpenRA.Mods.Common.Effects
 		[Desc("Sequence of impact animation to use.")]
 		[SequenceReference("HitAnim")] public readonly string HitAnimSequence = "idle";
 
-		public readonly string HitAnimPalette = "effect";
+		[PaletteReference] public readonly string HitAnimPalette = "effect";
 
 		public IEffect Create(ProjectileArgs args)
 		{

OpenRA.Mods.Common/Effects/Missile.cs

@@ -25,7 +25,7 @@ namespace OpenRA.Mods.Common.Effects
 		public readonly string Image = null;
 		[SequenceReference("Image")] public readonly string Sequence = "idle";
 
-		public readonly string Palette = "effect";
+		[PaletteReference] public readonly string Palette = "effect";
 
 		public readonly bool Shadow = false;
 
@@ -59,7 +59,8 @@ namespace OpenRA.Mods.Common.Effects
 		[Desc("Interval in ticks between each spawned Trail animation.")]
 		public readonly int TrailInterval = 2;
 
-		public readonly string TrailPalette = "effect";
+		[PaletteReference] public readonly string TrailPalette = "effect";
+
 		public readonly bool TrailUsePlayerPalette = false;
 		public readonly int ContrailLength = 0;
 		public readonly Color ContrailColor = Color.White;

OpenRA.Mods.Common/Lint/CheckPalettes.cs

@@ -0,0 +1,91 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2015 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;
+using System.Collections.Generic;
+using System.Linq;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Lint
+{
+	class CheckPalettes : ILintPass
+	{
+		public void Run(Action<string> emitError, Action<string> emitWarning, Map map)
+		{
+			if (map != null && !map.RuleDefinitions.Any())
+				return;
+
+			var rules = map == null ? Game.ModData.DefaultRules : map.Rules;
+
+			var palettes = GetPalettes(emitError, rules).ToList();
+
+			foreach (var actorInfo in rules.Actors)
+			{
+				foreach (var traitInfo in actorInfo.Value.Traits)
+				{
+					var fields = traitInfo.GetType().GetFields();
+					foreach (var field in fields.Where(x => x.HasAttribute<PaletteReferenceAttribute>()))
+					{
+						var references = LintExts.GetFieldValues(traitInfo, field, emitError);
+						foreach (var reference in references)
+						{
+							if (string.IsNullOrEmpty(reference))
+								continue;
+
+							if (!palettes.Contains(reference))
+								emitError("Undefined palette reference {0} detected at {1}".F(reference, traitInfo));
+						}
+					}
+				}
+			}
+
+			foreach (var weaponInfo in rules.Weapons)
+			{
+				var projectileInfo = weaponInfo.Value.Projectile;
+				if (projectileInfo == null)
+					continue;
+
+				foreach (var field in projectileInfo.GetType().GetFields())
+				{
+					if (field.HasAttribute<PaletteReferenceAttribute>())
+					{
+						var references = LintExts.GetFieldValues(projectileInfo, field, emitError);
+						foreach (var reference in references)
+						{
+							if (string.IsNullOrEmpty(reference))
+								continue;
+
+							if (!palettes.Contains(reference))
+								emitError("Undefined palette reference {0} detected at weapon {1}.".F(reference, weaponInfo.Key));
+						}
+					}
+				}
+			}
+		}
+
+		static IEnumerable<string> GetPalettes(Action<string> emitError, Ruleset rules)
+		{
+			foreach (var actorInfo in rules.Actors)
+			{
+				foreach (var traitInfo in actorInfo.Value.Traits)
+				{
+					var fields = traitInfo.GetType().GetFields();
+					foreach (var field in fields.Where(x => x.HasAttribute<PaletteDefinitionAttribute>()))
+					{
+						var values = LintExts.GetFieldValues(traitInfo, field, emitError);
+						foreach (var value in values)
+							yield return value;
+					}
+				}
+			}
+		}
+	}
+}

OpenRA.Mods.Common/OpenRA.Mods.Common.csproj

@@ -178,6 +178,7 @@
     <Compile Include="Graphics\VoxelActorPreview.cs" />
     <Compile Include="Graphics\VoxelRenderable.cs" />
     <Compile Include="Lint\CheckSequences.cs" />
+    <Compile Include="Lint\CheckPalettes.cs" />
     <Compile Include="Lint\CheckPlayers.cs" />
     <Compile Include="Lint\CheckActors.cs" />
     <Compile Include="Lint\CheckMapCordon.cs" />

OpenRA.Mods.Common/Traits/Armament.cs

@@ -57,7 +57,7 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly string MuzzleSequence = null;
 
 		[Desc("Palette to render Muzzle flash sequence in")]
-		public readonly string MuzzlePalette = "effect";
+		[PaletteReference] public readonly string MuzzlePalette = "effect";
 
 		[Desc("Use multiple muzzle images if non-zero")]
 		public readonly int MuzzleSplitFacings = 0;

OpenRA.Mods.Common/Traits/Attack/AttackGarrisoned.cs

@@ -39,7 +39,7 @@ namespace OpenRA.Mods.Common.Traits
 		[Desc("Fire port yaw cone angle.")]
 		public readonly WAngle[] PortCones = null;
 
-		public readonly string MuzzlePalette = "effect";
+		[PaletteReference] public readonly string MuzzlePalette = "effect";
 
 		public override object Create(ActorInitializer init) { return new AttackGarrisoned(init.Self, this); }
 	}

OpenRA.Mods.Common/Traits/Buildable.cs

@@ -33,7 +33,7 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly string ForceFaction = null;
 
 		[Desc("Palette used for the production icon.")]
-		public readonly string IconPalette = "chrome";
+		[PaletteReference] public readonly string IconPalette = "chrome";
 
 		// TODO: UI fluff; doesn't belong here
 		public readonly int BuildPaletteOrder = 9999;

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

@@ -18,7 +18,7 @@ namespace OpenRA.Mods.Common.Traits
 	public class BibInfo : ITraitInfo, Requires<BuildingInfo>, IRenderActorPreviewSpritesInfo, Requires<RenderSpritesInfo>
 	{
 		[SequenceReference] public readonly string Sequence = "bib";
-		public readonly string Palette = "terrain";
+		[PaletteReference] public readonly string Palette = "terrain";
 		public readonly bool HasMinibib = false;
 
 		public object Create(ActorInitializer init) { return new Bib(init.Self, this); }

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

@@ -29,7 +29,7 @@ namespace OpenRA.Mods.Common.Traits
 		[SequenceReference("IndicatorImage")] public readonly string IndicatorSequence = "repair";
 
 		[Desc("Overrides the IndicatorPalettePrefix.")]
-		public readonly string IndicatorPalette = "";
+		[PaletteReference] public readonly string IndicatorPalette = "";
 
 		[Desc("Suffixed by the interal repairing player name.")]
 		public readonly string IndicatorPalettePrefix = "player";

OpenRA.Mods.Common/Traits/Cloak.cs

@@ -34,7 +34,7 @@ namespace OpenRA.Mods.Common.Traits
 
 		public readonly string CloakSound = null;
 		public readonly string UncloakSound = null;
-		public readonly string Palette = "cloak";
+		[PaletteReference] public readonly string Palette = "cloak";
 
 		public readonly string[] CloakTypes = { "Cloak" };
 

OpenRA.Mods.Common/Traits/Crates/CrateAction.cs

@@ -23,7 +23,7 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly string Effect = null;
 
 		[Desc("Palette to draw the animation in.")]
-		public readonly string Palette = "effect";
+		[PaletteReference] public readonly string Palette = "effect";
 
 		[Desc("Audio clip to play when the crate is collected.")]
 		public readonly string Notification = null;

OpenRA.Mods.Common/Traits/GainsExperience.cs

@@ -27,7 +27,7 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly Dictionary<int, string[]> Upgrades = null;
 
 		[Desc("Palette for the level up sprite.")]
-		public readonly string LevelUpPalette = "effect";
+		[PaletteReference] public readonly string LevelUpPalette = "effect";
 
 		[Desc("Should the level-up animation be suppressed when actor is created?")]
 		public readonly bool SuppressLevelupAnimation = true;

OpenRA.Mods.Common/Traits/Modifiers/UpgradeOverlay.cs

@@ -18,7 +18,7 @@ namespace OpenRA.Mods.Common.Traits
 	public class UpgradeOverlayInfo : UpgradableTraitInfo
 	{
 		[Desc("Palette to use when rendering the overlay")]
-		public readonly string Palette = "invuln";
+		[PaletteReference] public readonly string Palette = "invuln";
 
 		public override object Create(ActorInitializer init) { return new UpgradeOverlay(this); }
 	}

OpenRA.Mods.Common/Traits/Parachutable.cs

@@ -24,11 +24,11 @@ namespace OpenRA.Mods.Common.Traits
 
 		public readonly string GroundImpactSound = null;
 		[SequenceReference("CorpseSequenceCollection")] public readonly string GroundCorpseSequence = "corpse";
-		public readonly string GroundCorpsePalette = "effect";
+		[PaletteReference] public readonly string GroundCorpsePalette = "effect";
 
 		public readonly string WaterImpactSound = null;
 		[SequenceReference("CorpseSequenceCollection")] public readonly string WaterCorpseSequence = null;
-		public readonly string WaterCorpsePalette = "effect";
+		[PaletteReference] public readonly string WaterCorpsePalette = "effect";
 
 		public readonly int FallRate = 13;
 

OpenRA.Mods.Common/Traits/Player/PlaceBuilding.cs

@@ -19,7 +19,7 @@ namespace OpenRA.Mods.Common.Traits
 	public class PlaceBuildingInfo : ITraitInfo
 	{
 		[Desc("Palette to use for rendering the placement sprite.")]
-		public readonly string Palette = "terrain";
+		[PaletteReference] public readonly string Palette = "terrain";
 
 		[Desc("Play NewOptionsNotification this many ticks after building placement.")]
 		public readonly int NewOptionsNotificationDelay = 10;

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

@@ -18,7 +18,7 @@ namespace OpenRA.Mods.Common.Traits
 	public class LeavesTrailsInfo : ITraitInfo
 	{
 		public readonly string Image = null;
-		public readonly string Palette = "effect";
+		[PaletteReference] public readonly string Palette = "effect";
 
 		[Desc("Only do so when the terrain types match with the previous cell.")]
 		public readonly string[] TerrainTypes = { };

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

@@ -34,7 +34,7 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly Dictionary<string, string> RaceImages = null;
 
 		[Desc("Custom palette name")]
-		public readonly string Palette = null;
+		[PaletteReference] public readonly string Palette = null;
 
 		[Desc("Custom PlayerColorPalette: BaseName")]
 		public readonly string PlayerPalette = "player";

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

@@ -28,12 +28,12 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly string Image = null;
 
 		[Desc("Custom palette name")]
-		public readonly string Palette = null;
+		[PaletteReference] public readonly string Palette = null;
 
 		[Desc("Custom PlayerColorPalette: BaseName")]
-		public readonly string PlayerPalette = "player";
+		[PaletteReference] public readonly string PlayerPalette = "player";
-		public readonly string NormalsPalette = "normals";
+		[PaletteReference] public readonly string NormalsPalette = "normals";
-		public readonly string ShadowPalette = "shadow";
+		[PaletteReference] public readonly string ShadowPalette = "shadow";
 
 		[Desc("Change the image size.")]
 		public readonly float Scale = 10;

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

@@ -19,7 +19,7 @@ namespace OpenRA.Mods.Common.Traits
 {
 	public class SelectionDecorationsInfo : ITraitInfo, ISelectionDecorationsInfo
 	{
-		public readonly string Palette = "chrome";
+		[PaletteReference] public readonly string Palette = "chrome";
 
 		[Desc("Visual bounds for selection box. If null, it uses AutoSelectionSize.",
 		"The first two values define the bounds' size, the optional third and fourth",

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

@@ -28,7 +28,7 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly int Delay = 0;
 
 		[Desc("Custom palette name")]
-		public readonly string Palette = "effect";
+		[PaletteReference] public readonly string Palette = "effect";
 
 		public object Create(ActorInitializer init) { return new WithBuildingExplosion(init.Self, this); }
 	}

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

@@ -23,7 +23,7 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly WVec Offset = WVec.Zero;
 
 		[Desc("Custom palette name")]
-		public readonly string Palette = null;
+		[PaletteReference] public readonly string Palette = null;
 
 		[Desc("Custom palette is a player palette BaseName")]
 		public readonly bool IsPlayerPalette = false;

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

@@ -20,7 +20,7 @@ namespace OpenRA.Mods.Common.Traits
 		[SequenceReference] public readonly string Sequence = "active";
 
 		[Desc("Custom palette name")]
-		public readonly string Palette = null;
+		[PaletteReference] public readonly string Palette = null;
 
 		[Desc("Custom palette is a player palette BaseName")]
 		public readonly bool IsPlayerPalette = false;

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

@@ -38,7 +38,7 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly string Sequence = null;
 
 		[Desc("Palette to render the sprite in. Reference the world actor's PaletteFrom* traits.")]
-		public readonly string Palette = "chrome";
+		[PaletteReference] public readonly string Palette = "chrome";
 
 		[Desc("Point in the actor's bounding box used as reference for offsetting the decoration image." +
 			"Possible values are any combination of Top, VCenter, Bottom and Left, HCenter, Right separated by a comma.")]

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

@@ -23,7 +23,7 @@ namespace OpenRA.Mods.Common.Traits
 		[Desc("Position relative to body")]
 		public readonly WVec Offset = WVec.Zero;
 
-		public readonly string Palette = "effect";
+		[PaletteReference] public readonly string Palette = "effect";
 
 		public object Create(ActorInitializer init) { return new WithHarvestOverlay(init.Self, this); }
 	}

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

@@ -26,7 +26,7 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly WVec Offset = WVec.Zero;
 
 		[Desc("Custom palette name")]
-		public readonly string Palette = null;
+		[PaletteReference] public readonly string Palette = null;
 
 		[Desc("Custom palette is a player palette BaseName")]
 		public readonly bool IsPlayerPalette = false;

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

@@ -19,7 +19,7 @@ namespace OpenRA.Mods.Common.Traits
 	[Desc("Clones the aircraft sprite with another palette below it.")]
 	class WithShadowInfo : ITraitInfo
 	{
-		public readonly string Palette = "shadow";
+		[PaletteReference] public readonly string Palette = "shadow";
 
 		public object Create(ActorInitializer init) { return new WithShadow(this); }
 	}

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

@@ -40,13 +40,13 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly bool DisplayTimer = false;
 
 		[Desc("Palette used for the icon.")]
-		public readonly string IconPalette = "chrome";
+		[PaletteReference] public readonly string IconPalette = "chrome";
 
 		[Desc("Beacons are only supported on the Airstrike and Nuke powers")]
 		public readonly bool DisplayBeacon = false;
 		public readonly string BeaconPalettePrefix = "player";
 		public readonly string BeaconPoster = null;
-		public readonly string BeaconPosterPalette = "chrome";
+		[PaletteReference] public readonly string BeaconPosterPalette = "chrome";
 
 		public readonly bool DisplayRadarPing = false;
 

OpenRA.Mods.Common/Traits/VeteranProductionIconOverlay.cs

@@ -27,7 +27,7 @@ namespace OpenRA.Mods.Common.Traits
 		[SequenceReference("Image")] public readonly string Sequence = null;
 
 		[Desc("Palette to render the sprite in. Reference the world actor's PaletteFrom* traits.")]
-		public readonly string Palette = "chrome";
+		[PaletteReference] public readonly string Palette = "chrome";
 
 		[Desc("Point on the production icon's used as reference for offsetting the overlay. ",
 			"Possible values are any combination of Top, VCenter, Bottom and Left, HCenter, Right separated by a comma.")]

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

@@ -18,11 +18,13 @@ namespace OpenRA.Mods.Common.Traits
 	[Desc("Loads the palette specified in the tileset definition")]
 	class PaletteFromCurrentTilesetInfo : ITraitInfo
 	{
-		[FieldLoader.Require]
+		[FieldLoader.Require, PaletteDefinition]
 		[Desc("internal palette name")]
 		public readonly string Name = null;
+
 		[Desc("Map listed indices to shadow. Ignores previous color.")]
 		public readonly int[] ShadowIndex = { };
+
 		public readonly bool AllowModifiers = true;
 
 		public object Create(ActorInitializer init) { return new PaletteFromCurrentTileset(init.World, this); }

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

@@ -17,16 +17,20 @@ namespace OpenRA.Mods.Common.Traits
 {
 	class PaletteFromFileInfo : ITraitInfo
 	{
-		[FieldLoader.Require]
+		[FieldLoader.Require, PaletteDefinition]
 		[Desc("internal palette name")]
 		public readonly string Name = null;
+
 		[Desc("If defined, load the palette only for this tileset.")]
 		public readonly string Tileset = null;
+
 		[FieldLoader.Require]
 		[Desc("filename to load")]
 		public readonly string Filename = null;
+
 		[Desc("Map listed indices to shadow. Ignores previous color.")]
 		public readonly int[] ShadowIndex = { };
+
 		public readonly bool AllowModifiers = true;
 
 		public object Create(ActorInitializer init) { return new PaletteFromFile(init.World, this); }

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

@@ -19,11 +19,11 @@ namespace OpenRA.Mods.Common.Traits
 	[Desc("Create a palette by applying alpha transparency to another palette.")]
 	class PaletteFromPaletteWithAlphaInfo : ITraitInfo
 	{
-		[FieldLoader.Require]
+		[FieldLoader.Require, PaletteDefinition]
 		[Desc("Internal palette name")]
 		public readonly string Name = null;
 
-		[FieldLoader.Require]
+		[FieldLoader.Require, PaletteReference]
 		[Desc("The name of the palette to base off.")]
 		public readonly string BasePalette = null;
 

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

@@ -18,19 +18,25 @@ namespace OpenRA.Mods.Common.Traits
 	[Desc("Creates a single color palette without any base palette file.")]
 	class PaletteFromRGBAInfo : ITraitInfo
 	{
-		[FieldLoader.Require]
+		[FieldLoader.Require, PaletteDefinition]
 		[Desc("internal palette name")]
 		public readonly string Name = null;
+
 		[Desc("If defined, load the palette only for this tileset.")]
 		public readonly string Tileset = null;
+
 		[Desc("red color component")]
 		public readonly int R = 0;
+
 		[Desc("green color component")]
 		public readonly int G = 0;
+
 		[Desc("blue color component")]
 		public readonly int B = 0;
+
 		[Desc("alpha channel (transparency)")]
 		public readonly int A = 255;
+
 		public readonly bool AllowModifiers = true;
 
 		public object Create(ActorInitializer init) { return new PaletteFromRGBA(init.World, this); }

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

@@ -16,7 +16,7 @@ namespace OpenRA.Mods.Common.Traits
 {
 	class PlayerPaletteFromCurrentTilesetInfo : ITraitInfo
 	{
-		[FieldLoader.Require]
+		[FieldLoader.Require, PaletteDefinition]
 		[Desc("internal palette name")]
 		public readonly string Name = null;
 		[Desc("Map listed indices to shadow.")]

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

@@ -20,6 +20,7 @@ namespace OpenRA.Mods.Common.Traits
 	class ShroudPaletteInfo : ITraitInfo
 	{
 		[Desc("Internal palette name")]
+		[FieldLoader.Require, PaletteDefinition]
 		public readonly string Name = "shroud";
 
 		[Desc("Palette type")]

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

@@ -23,11 +23,11 @@ namespace OpenRA.Mods.Common.Traits
 	public class ShroudRendererInfo : ITraitInfo
 	{
 		public readonly string Sequence = "shroud";
-		public readonly string[] ShroudVariants = new[] { "shroud" };
+		[SequenceReference("Sequence")] public readonly string[] ShroudVariants = new[] { "shroud" };
-		public readonly string[] FogVariants = new[] { "fog" };
+		[SequenceReference("Sequence")] public readonly string[] FogVariants = new[] { "fog" };
 
-		public readonly string ShroudPalette = "shroud";
+		[PaletteReference] public readonly string ShroudPalette = "shroud";
-		public readonly string FogPalette = "fog";
+		[PaletteReference] public readonly string FogPalette = "fog";
 
 		[Desc("Bitfield of shroud directions for each frame. Lower four bits are",
 			"corners clockwise from TL; upper four are edges clockwise from top")]
@@ -37,11 +37,11 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly bool UseExtendedIndex = false;
 
 		[Desc("Override for source art that doesn't define a fully shrouded tile")]
-		public readonly string OverrideFullShroud = null;
+		[SequenceReference("Sequence")] public readonly string OverrideFullShroud = null;
 		public readonly int OverrideShroudIndex = 15;
 
 		[Desc("Override for source art that doesn't define a fully fogged tile")]
-		public readonly string OverrideFullFog = null;
+		[SequenceReference("Sequence")] public readonly string OverrideFullFog = null;
 		public readonly int OverrideFogIndex = 15;
 
 		public readonly BlendMode ShroudBlend = BlendMode.Alpha;

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

@@ -31,9 +31,9 @@ namespace OpenRA.Mods.Common.Traits
 		public readonly string SmokeType = "smoke_m";
 		[SequenceReference("SmokeType")] public readonly string SmokeSequence = "idle";
 
-		public readonly string SmokePalette = "effect";
+		[PaletteReference] public readonly string SmokePalette = "effect";
 
-		public readonly string Palette = "terrain";
+		[PaletteReference] public readonly string Palette = "terrain";
 
 		public object Create(ActorInitializer init) { return new SmudgeLayer(init.Self, this); }
 	}

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

@@ -16,6 +16,7 @@ namespace OpenRA.Mods.Common.Traits
 {
 	public class VoxelNormalsPaletteInfo : ITraitInfo
 	{
+		[PaletteDefinition]
 		public readonly string Name = "normals";
 
 		[Desc("Can be TiberianSun or RedAlert2")]

OpenRA.Mods.D2k/Traits/Render/WithAttackOverlay.cs

@@ -22,7 +22,7 @@ namespace OpenRA.Mods.D2k.Traits
 		[SequenceReference] public readonly string Sequence = null;
 
 		[Desc("Custom palette name")]
-		public readonly string Palette = null;
+		[PaletteReference] public readonly string Palette = null;
 
 		[Desc("Custom palette is a player palette BaseName")]
 		public readonly bool IsPlayerPalette = false;

OpenRA.Mods.D2k/Traits/Render/WithCrumbleOverlay.cs

@@ -21,7 +21,7 @@ namespace OpenRA.Mods.D2k.Traits
 		[SequenceReference] public readonly string Sequence = "crumble-overlay";
 
 		[Desc("Custom palette name")]
-		public readonly string Palette = null;
+		[PaletteReference] public readonly string Palette = null;
 
 		[Desc("Custom palette is a player palette BaseName")]
 		public readonly bool IsPlayerPalette = false;

OpenRA.Mods.D2k/Traits/Render/WithDeliveryOverlay.cs

@@ -25,7 +25,7 @@ namespace OpenRA.Mods.D2k.Traits
 		public readonly WVec Offset = WVec.Zero;
 
 		[Desc("Custom palette name")]
-		public readonly string Palette = null;
+		[PaletteReference] public readonly string Palette = null;
 
 		[Desc("Custom palette is a player palette BaseName")]
 		public readonly bool IsPlayerPalette = false;

OpenRA.Mods.D2k/Traits/World/FogPaletteFromR8.cs

@@ -19,14 +19,17 @@ namespace OpenRA.Mods.D2k.Traits
 {
 	class FogPaletteFromR8Info : ITraitInfo
 	{
-		[FieldLoader.Require]
+		[FieldLoader.Require, PaletteDefinition]
 		[Desc("Internal palette name")]
 		public readonly string Name = null;
+
 		[FieldLoader.Require]
 		[Desc("Filename to load")]
 		public readonly string Filename = null;
+
 		[Desc("Palette byte offset")]
 		public readonly long Offset = 0;
+
 		public readonly bool AllowModifiers = true;
 		public readonly bool InvertColor = false;
 

OpenRA.Mods.D2k/Traits/World/PaletteFromR8.cs

@@ -19,14 +19,17 @@ namespace OpenRA.Mods.D2k.Traits
 {
 	class PaletteFromR8Info : ITraitInfo
 	{
-		[FieldLoader.Require]
+		[FieldLoader.Require, PaletteDefinition]
 		[Desc("Internal palette name")]
 		public readonly string Name = null;
+
 		[FieldLoader.Require]
 		[Desc("Filename to load")]
 		public readonly string Filename = null;
+
 		[Desc("Palette byte offset")]
 		public readonly long Offset = 0;
+
 		public readonly bool AllowModifiers = true;
 		public readonly bool InvertColor = false;
 

OpenRA.Mods.D2k/Traits/World/PaletteFromScaledPalette.cs

@@ -19,11 +19,11 @@ namespace OpenRA.Mods.D2k.Traits
 	[Desc("Create a palette by applying a scale and offset to the colors in another palette.")]
 	class PaletteFromScaledPaletteInfo : ITraitInfo
 	{
-		[FieldLoader.Require]
+		[FieldLoader.Require, PaletteDefinition]
 		[Desc("Internal palette name")]
 		public readonly string Name = null;
 
-		[FieldLoader.Require]
+		[FieldLoader.Require, PaletteReference]
 		[Desc("The name of the palette to base off.")]
 		public readonly string BasePalette = null;
 

OpenRA.Mods.RA/Effects/TeslaZap.cs

@@ -24,7 +24,7 @@ namespace OpenRA.Mods.RA.Effects
 		[SequenceReference("Image")] public readonly string BrightSequence = "bright";
 		[SequenceReference("Image")] public readonly string DimSequence = "dim";
 
-		public readonly string Palette = "effect";
+		[PaletteReference] public readonly string Palette = "effect";
 
 		public readonly int BrightZaps = 1;
 		public readonly int DimZaps = 2;

OpenRA.Mods.TS/Traits/World/TSShroudPalette.cs

@@ -20,6 +20,7 @@ namespace OpenRA.Mods.TS.Traits
 	[Desc("Adds the hard-coded shroud palette to the game")]
 	class TSShroudPaletteInfo : ITraitInfo
 	{
+		[FieldLoader.Require, PaletteDefinition]
 		[Desc("Internal palette name")]
 		public readonly string Name = "shroud";
 

mods/cnc/rules/palettes.yaml

@@ -54,6 +54,7 @@
 		B: 0
 		A: 180
 	ShroudPalette@shroud:
+		Name: shroud
 		Type: Shroud
 	ShroudPalette@fog:
 		Name: fog

mods/ra/rules/palettes.yaml

@@ -56,6 +56,7 @@
 		B: 0
 		A: 180
 	ShroudPalette@shroud:
+		Name: shroud
 		Type: Shroud
 	ShroudPalette@fog:
 		Name: fog

mods/ts/rules/palettes.yaml

@@ -80,6 +80,7 @@
 		BasePalette: ra
 		Alpha: 0.75
 	TSShroudPalette@shroud:
+		Name: shroud
 		Type: Shroud
 	VoxelNormalsPalette@normals:
 		Name: normals