added reset texture offsets feature for visual mode

Documents/todo.txt

@@ -28,7 +28,7 @@ The order and included items may also change any time.
 =========================================================
 
 - Contact AlysiumX (AlysiumX@gmail.com) for official video tutorials
-	(see http://www.youtube.com/view_play_list?p=6FDD1F9F674419E8)
+	(see http://doomvideos.com/, http://www.youtube.com/view_play_list?p=6FDD1F9F674419E8)
 
 - Make Plugin Development Kit
 	- Add general purpose events to editing modes and plugin main class

Source/BuilderModes/Resources/Actions.cfg

@@ -487,6 +487,16 @@ togglebrightness
 	allowscroll = true;
 }
 
+resettexture
+{
+	title = "Reset Texture Offsets";
+	category = "visual";
+	description = "Resets the texture offsets on the targeted or selected sidedef to 0, 0.";
+	allowkeys = true;
+	allowmouse = true;
+	allowscroll = true;
+}
+
 placevisualstart
 {
 	title = "Place Visual Mode Camera";

Source/BuilderModes/VisualModes/BaseVisualGeometrySector.cs

@@ -82,6 +82,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 		public virtual void OnTextureAlign(bool alignx, bool aligny) { }
 		public virtual void OnToggleUpperUnpegged() { }
 		public virtual void OnToggleLowerUnpegged() { }
+		public virtual void OnResetTextureOffset() { }
 		protected virtual void SetTexture(string texturename) { }
 
 		// Select texture

Source/BuilderModes/VisualModes/BaseVisualGeometrySidedef.cs

@@ -113,6 +113,23 @@ namespace CodeImp.DoomBuilder.BuilderModes
 		public virtual void OnChangeTargetHeight(int amount) { }
 		protected virtual void SetTexture(string texturename) { }
 		
+		// Reset texture offsets
+		public virtual void OnResetTextureOffset()
+		{
+			General.Map.UndoRedo.CreateUndo("Reset texture offsets");
+
+			// Apply offsets
+			Sidedef.OffsetX = 0;
+			Sidedef.OffsetY = 0;
+
+			// Update sidedef geometry
+			VisualSidedefParts parts = Sector.GetSidedefParts(Sidedef);
+			if(parts.lower != null) parts.lower.Setup();
+			if(parts.middledouble != null) parts.middledouble.Setup();
+			if(parts.middlesingle != null) parts.middlesingle.Setup();
+			if(parts.upper != null) parts.upper.Setup();
+		}
+		
 		// Toggle upper-unpegged
 		public virtual void OnToggleUpperUnpegged()
 		{

Source/BuilderModes/VisualModes/BaseVisualMode.cs

@@ -498,6 +498,14 @@ namespace CodeImp.DoomBuilder.BuilderModes
 		{
 			renderer.FullBrightness = !renderer.FullBrightness;
 		}
+
+		[BeginAction("resettexture")]
+		public void ResetTexture()
+		{
+			PickTargetUnlocked();
+			if(target.picked != null) (target.picked as IVisualEventReceiver).OnResetTextureOffset();
+			ShowTargetInfo();
+		}
 		
 		#endregion
 	}

Source/BuilderModes/VisualModes/BaseVisualThing.cs

@@ -347,6 +347,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 		public virtual void OnTextureAlign(bool alignx, bool aligny) { }
 		public virtual void OnToggleUpperUnpegged() { }
 		public virtual void OnToggleLowerUnpegged() { }
+		public virtual void OnResetTextureOffset() { }
 		
 		// Return texture name
 		public virtual string GetTextureName() { return ""; }

Source/BuilderModes/VisualModes/IVisualEventReceiver.cs

@@ -47,6 +47,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 		void OnChangeTargetHeight(int amount);
 		void OnChangeTargetBrightness(int amount);
 		void OnChangeTextureOffset(int horizontal, int vertical);
+		void OnResetTextureOffset();
 		void OnSelectTexture();
 		void OnCopyTexture();
 		void OnPasteTexture();