Merge branch 'master' into unofficial-port

Build/Configurations/SRB2-22.cfg

@@ -4037,16 +4037,16 @@ thingtypes
 		{
 			title = "Egg Mobile";
 			sprite = "EGGMA1";
-			width = 24;
-			height = 76;
+			width = 36;
+			height = 84;
 			flags4text = "[4] End level on death";
 		}
 		201
 		{
 			title = "Egg Slimer";
 			sprite = "EGGNA1";
-			width = 24;
-			height = 76;
+			width = 36;
+			height = 84;
 			flags4text = "[4] End level on death";
 			flags8text = "[8] Speed up when hit";
 		}
@@ -4054,7 +4054,7 @@ thingtypes
 		{
 			title = "Sea Egg";
 			sprite = "EGGOA1";
-			width = 32;
+			width = 36;
 			height = 116;
 			flags4text = "[4] End level on death";
 		}
@@ -4062,8 +4062,8 @@ thingtypes
 		{
 			title = "Egg Colosseum";
 			sprite = "EGGPA1";
-			width = 24;
-			height = 76;
+			width = 36;
+			height = 84;
 			flags4text = "[4] End level on death";
 		}
 		204
@@ -4140,6 +4140,7 @@ thingtypes
 			angletext = "No. (Sea Egg)";
 			fixedrotation = 1;
 			flagsvaluetext = "No. (Brak)";
+			parametertext = "Next";
 		}
 		293
 		{
@@ -6297,10 +6298,10 @@ thingtypes
 		}
 		1602
 		{
-			title = "Pian";
-			sprite = "NTPNALAR";
+			title = "Nightopian";
+			sprite = "NTPNA1";
 			width = 16;
-			height = 32;
+			height = 40;
 		}
 	}
 
@@ -6879,6 +6880,20 @@ thingtypes
 		}
 	}
 
+	tutorial
+	{
+		color = 10; // Green
+		title = "Tutorial";
+		
+		799
+		{
+			title = "Tutorial Plant";
+			sprite = "TUPFH0";
+			width = 40;
+			height = 144;
+			parametertext = "Start frame";
+		}
+
 	flickies
 	{
 		color = 10; // Green

Source/Plugins/BuilderModes/ClassicModes/LinedefsMode.cs

@@ -1218,7 +1218,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			ICollection<Linedef> selected = General.Map.Map.GetSelectedLinedefs(true);
 			foreach (Linedef ld in selected)
 			{
-				if (ld.Back != null && ld.Front.Sector == ld.Back.Sector && ld.Action != 0)
+				if (ld.Back != null && ld.Front.Sector == ld.Back.Sector && ld.Action == 0)
 					counter++;
 				else
 					ld.Selected = false;