Add a speculative gimballess lr101 (#188)

* Add a speculative gimballess lr101

* lr101fixed tweaks

- rename for consistency
- fix CoM
- nicer-looking base
- a baseless variant

Author: lpgagnon

GameData/ROEngines/PartConfigs/LR101_BDB.cfg

@@ -164,10 +164,71 @@ PART
 	}
 }
 
-@PART[ROE-LR101Inline|ROE-LR101]:AFTER[FerramAerospaceResearch]
+
+
++PART[ROE-LR101Inline]:FIRST
+{
+	// A LR101 without gimbal assembly.
+	@name = ROE-LR101Fixed
+	%specLevel = speculative  # was never actually used this way?
+
+	// http://heroicrelics.org/info/lr-101/lr-101.html
+	// >  The LR-101's thrust chamber weighed only about 15 pounds; in its -NA-15 configuration, the mount
+	// >  and bearing assembly added another 27 pounds.
+	//
+	// Let's assume that's optimistic and take away 9kg, not 12. It still needs _some_ sort of mount
+	// Actual mass ends up between 15kg (-na-3) and 12kg (-na-15)
+	%massOffset = -0.009
+
+	// model's CoM is up in the base, which would leave it floating above this part
+	CoMOffset = 0.0, -0.3, 0.0
+
+	// hide gimbal assembly, hide base or move it down (player's choice!),
+	// move top node down to close the gap
+	@node_stack_top = 0.0, -0.169, 0.0, 0.0, 1.0, 0.0, 1
+	MODULE
+	{
+		name = ModuleB9DisableTransform
+		transform = YawGimbalMesh
+	}
+	MODULE
+	{
+		name = ModuleB9PartSwitch
+		moduleID = moveTheBase
+		SUBTYPE
+		{
+			name = Default
+			transform = Base
+			TRANSFORM
+			{
+				name = Base
+				// move base down since the gimbal is gone
+				positionOffset = 0.0, -0.22, 0.0
+				// and stretch it to cover some piping gaps, since the pipes don't have their own transform to delete them
+				scaleOffset = 0.75, 1.8, 0.75
+			}
+		}
+		SUBTYPE
+		{
+			// maybe someone will prefer the ugly pipes. this variant will just hide the base
+			name = Bare
+		}
+	}
+}
+
+@PART[ROE-LR101Fixed]:AFTER[RealismOverhaulEngines]
+{
+	@title ^= :$: (fixed):
+	@description ^= :$: This lighter version lacks a gimbal assembly.:
+	!MODULE[ModuleGimbal] {}
+}
+
+
+@PART[ROE-LR101Inline|ROE-LR101|ROE-LR101Fixed]:AFTER[FerramAerospaceResearch]
 {
 	@MODULE[GeometryPartModule]
 	{
 		%forceUseColliders = True
 	}
 }
+