Fatboy unit detach bug + exFac footprint fix

changelog/snippets/fix.6192.md

@@ -0,0 +1,4 @@
+(#6192) Removes an erroneous structure footprint from the dummy unit of external factories  
+
+(#6192) Fix a bug where deploying when building a unit in the external factory would detach the unit under construction
+- Applies to/is fixed in the fatboy, but any non-carrier external factory with deploy capability would have this issue

units/UEL0401/UEL0401_script.lua

@@ -127,6 +127,18 @@ UEL0401 = ClassUnit(TMobileFactoryUnit, ExternalFactoryComponent) {
         end
     end,
 
+    ---Fixes a bug with external factories where ordering "deploy" will detach the unit under construction
+    ---@param self UEL0401
+    ---@param attachBone string
+    ---@param unit Unit
+    OnTransportDetach = function(self, attachBone, unit)
+        if not self.Dead and not unit.Dead and unit:GetFractionComplete() < 1.0 then
+            unit:AttachBoneTo(-2, self, attachBone)
+        else
+            TMobileFactoryUnit.OnTransportDetach(self, attachBone, unit)
+        end
+    end,
+
     IdleState = State {
         ---@param self UEL0401
         ---@param unitBeingBuilt Unit

units/ZXA0003/ZXA0003_unit.bp

@@ -30,33 +30,18 @@ UnitBlueprint{
     Economy = {
         BuildCostEnergy = 0,
         BuildCostMass = 0,
-        BuildRate = 0.0001,
         BuildTime = 0,
-        MaxBuildDistance = 100,
-    },
-    Footprint = {
-        MaxSlope = 0.25,
-        SizeX = 1,
-        SizeZ = 1,
     },
     General = {
         CapCost = 0,
+        Category = '',
         SelectionPriority = 3,
     },
     Intel = { VisionRadius = 0 },
     Physics = {
-        BankingSlope = 0.5,
-        BuildOnLayerCaps = {
-            LAYER_Air = true,
-            LAYER_Land = false,
-            LAYER_Orbit = false,
-            LAYER_Seabed = false,
-            LAYER_Sub = false,
-            LAYER_Water = false,
-        },
         MotionType = "RULEUMT_None",
     },
-    SizeX = 0.01,
-    SizeY = 0.01,
-    SizeZ = 0.01,
-}
+    SizeX = 0,
+    SizeY = 0,
+    SizeZ = 0,
+}