Support rigid frame rolling stock

SteelFill · SteelFill · commit a984e3fc7081 · 2025-10-21T19:29:32.000-05:00
diff --git a/Source/Orts.Simulation/Simulation/RollingStocks/TrainCar.cs b/Source/Orts.Simulation/Simulation/RollingStocks/TrainCar.cs
@@ -3020,7 +3020,7 @@ public void ComputePosition(Traveller traveler, bool backToFront, float elapsedT
                 if (p.SumWgt > 1.5f)
                     p0.AddPartLocation(1, p);
             }
-            if (Parts.Count == 2)
+            if (Parts.Count == 2 && p0.SumWgt < 1.5f)
             {
                 // Train car lacks sufficient parts to locate using linear regression
                 p0.Dir = Parts[1].Dir;
@@ -3837,7 +3837,10 @@ public void FindCenterLine()
             else // Improperly defined wagon, fallback to basic calculation
             {
                 for (int i = 0; i < 3; i++)
+                {
                     Pos[i] = (float)(SumPos[i] / SumWgt);
+                    Dir[i] = 0;
+                }
             }
 
             Roll = SumRoll / (float)SumWgt;

Original file line number	Diff line number	Diff line change
`@@ -3020,7 +3020,7 @@ public void ComputePosition(Traveller traveler, bool backToFront, float elapsedT`
`3020`	`3020`	`if (p.SumWgt > 1.5f)`
`3021`	`3021`	`p0.AddPartLocation(1, p);`
`3022`	`3022`	`}`
`3023`		`- if (Parts.Count == 2)`
	`3023`	`+ if (Parts.Count == 2 && p0.SumWgt < 1.5f)`
`3024`	`3024`	`{`
`3025`	`3025`	`// Train car lacks sufficient parts to locate using linear regression`
`3026`	`3026`	`p0.Dir = Parts[1].Dir;`
`@@ -3837,7 +3837,10 @@ public void FindCenterLine()`
`3837`	`3837`	`else // Improperly defined wagon, fallback to basic calculation`
`3838`	`3838`	`{`
`3839`	`3839`	`for (int i = 0; i < 3; i++)`
	`3840`	`+ {`
`3840`	`3841`	`Pos[i] = (float)(SumPos[i] / SumWgt);`
	`3842`	`+ Dir[i] = 0;`
	`3843`	`+ }`
`3841`	`3844`	`}`
`3842`	`3845`
`3843`	`3846`	`Roll = SumRoll / (float)SumWgt;`