Rewrite sequence linting / missing file handling.

- Distinguish between missing sequences and missing sprites
- Lint default sequences as well as maps
- Improved performance
- Correctly handle null images

OpenRA.Mods.Common/Projectiles/Bullet.cs

@@ -36,7 +36,7 @@ namespace OpenRA.Mods.Common.Projectiles
 		[Desc("Image to display.")]
 		public readonly string Image = null;
 
-		[SequenceReference("Image")]
+		[SequenceReference("Image", allowNullImage: true)]
 		[Desc("Loop a randomly chosen sequence of Image from this list while this projectile is moving.")]
 		public readonly string[] Sequences = { "idle" };
 
@@ -57,7 +57,7 @@ namespace OpenRA.Mods.Common.Projectiles
 		[Desc("Trail animation.")]
 		public readonly string TrailImage = null;
 
-		[SequenceReference("TrailImage")]
+		[SequenceReference("TrailImage", allowNullImage: true)]
 		[Desc("Loop a randomly chosen sequence of TrailImage from this list while this projectile is moving.")]
 		public readonly string[] TrailSequences = { "idle" };
 

OpenRA.Mods.Common/Projectiles/GravityBomb.cs

@@ -20,11 +20,11 @@ namespace OpenRA.Mods.Common.Projectiles
 	{
 		public readonly string Image = null;
 
-		[SequenceReference("Image")]
+		[SequenceReference("Image", allowNullImage: true)]
 		[Desc("Loop a randomly chosen sequence of Image from this list while falling.")]
 		public readonly string[] Sequences = { "idle" };
 
-		[SequenceReference("Image")]
+		[SequenceReference("Image", allowNullImage: true)]
 		[Desc("Sequence to play when launched. Skipped if null or empty.")]
 		public readonly string OpenSequence = null;
 

OpenRA.Mods.Common/Projectiles/LaserZap.cs

@@ -78,7 +78,7 @@ namespace OpenRA.Mods.Common.Projectiles
 		[Desc("Impact animation.")]
 		public readonly string HitAnim = null;
 
-		[SequenceReference("HitAnim")]
+		[SequenceReference("HitAnim", allowNullImage: true)]
 		[Desc("Sequence of impact animation to use.")]
 		public readonly string HitAnimSequence = "idle";
 
@@ -88,7 +88,7 @@ namespace OpenRA.Mods.Common.Projectiles
 		[Desc("Image containing launch effect sequence.")]
 		public readonly string LaunchEffectImage = null;
 
-		[SequenceReference("LaunchEffectImage")]
+		[SequenceReference("LaunchEffectImage", allowNullImage: true)]
 		[Desc("Launch effect sequence to play.")]
 		public readonly string LaunchEffectSequence = null;
 

OpenRA.Mods.Common/Projectiles/Missile.cs

@@ -26,7 +26,7 @@ namespace OpenRA.Mods.Common.Projectiles
 		[Desc("Name of the image containing the projectile sequence.")]
 		public readonly string Image = null;
 
-		[SequenceReference("Image")]
+		[SequenceReference("Image", allowNullImage: true)]
 		[Desc("Loop a randomly chosen sequence of Image from this list while this projectile is moving.")]
 		public readonly string[] Sequences = { "idle" };
 
@@ -109,7 +109,7 @@ namespace OpenRA.Mods.Common.Projectiles
 		[Desc("Image that contains the trail animation.")]
 		public readonly string TrailImage = null;
 
-		[SequenceReference("TrailImage")]
+		[SequenceReference("TrailImage", allowNullImage: true)]
 		[Desc("Loop a randomly chosen sequence of TrailImage from this list while this projectile is moving.")]
 		public readonly string[] TrailSequences = { "idle" };
 

OpenRA.Mods.Common/Projectiles/Railgun.cs

@@ -87,7 +87,7 @@ namespace OpenRA.Mods.Common.Projectiles
 		public readonly string HitAnim = null;
 
 		[Desc("Sequence of impact animation to use.")]
-		[SequenceReference("HitAnim")]
+		[SequenceReference("HitAnim", allowNullImage: true)]
 		public readonly string HitAnimSequence = "idle";
 
 		[PaletteReference]