Use pattern matching

OpenRA.Mods.Cnc/Traits/Minelayer.cs

@@ -104,8 +104,8 @@ namespace OpenRA.Mods.Cnc.Traits
 			{
 				case "BeginMinefield":
 					var start = self.World.Map.CellContaining(target.CenterPosition);
-					if (self.World.OrderGenerator is MinefieldOrderGenerator)
-						((MinefieldOrderGenerator)self.World.OrderGenerator).AddMinelayer(self);
+					if (self.World.OrderGenerator is MinefieldOrderGenerator generator)
+						generator.AddMinelayer(self);
 					else
 						self.World.OrderGenerator = new MinefieldOrderGenerator(self, start, queued);
 
@@ -145,6 +145,8 @@ namespace OpenRA.Mods.Cnc.Traits
 				// A different minelayer might have started laying the field without this minelayer knowing the start
 				minefieldStart = order.ExtraLocation;
 
+#pragma warning disable IDE0019 // Use pattern matching
+
 				var movement = self.Trait<IPositionable>();
 				var mobile = movement as Mobile;
 
@@ -153,6 +155,8 @@ namespace OpenRA.Mods.Cnc.Traits
 						&& movement.CanEnterCell(c, null, BlockedByActor.Immovable) && (mobile != null && mobile.CanStayInCell(c)))
 					.OrderBy(c => (c - minefieldStart).LengthSquared).ToList();
 
+#pragma warning restore IDE0019 // Use pattern matching
+
 				self.QueueActivity(order.Queued, new LayMines(self, minefield));
 				self.ShowTargetLines();
 			}
@@ -305,6 +309,8 @@ namespace OpenRA.Mods.Cnc.Traits
 				var minefield = GetMinefieldCells(minefieldStart, lastMousePos,
 					minelayers.Max(m => m.Info.TraitInfo<MinelayerInfo>().MinefieldDepth));
 
+#pragma warning disable IDE0019 // Use pattern matching
+
 				var movement = minelayer.Trait<IPositionable>();
 				var mobile = movement as Mobile;
 				var pal = wr.Palette(TileSet.TerrainPaletteInternalName);
@@ -335,6 +341,8 @@ namespace OpenRA.Mods.Cnc.Traits
 					}
 
 					yield return new SpriteRenderable(tile, world.Map.CenterOfCell(c), WVec.Zero, -511, pal, 1f, alpha, float3.Ones, TintModifiers.IgnoreWorldTint, true);
+
+#pragma warning restore IDE0019 // Use pattern matching
 				}
 			}