BGE patch: [#26223] Some RigidBody joints fixes (ui angles, conetwist/hinge limits etc) by Juha Mäki-Kanto + ui changes pour moi

From the tracker:::
Issues fixed:
- ConeTwist-constraint's params weren't making it to the CcdPhysicsEnvironment, also added Hinge's params.
- UI wasn't using angles where applicable.
- btHingeConstraint's constructor can create frame-matrices which don't align so the hinge doesn's start at 0 degree tilt.
This is an issue when setting limits.

Changes:
- UI: Hinge limits can be set (and disabled).
- UI: ConeTwist only has max-limits and only the twistX can be disabled
- PyApi via rna_constraint.c: added the functions limit_xyz_min, limit_xyz_max (for 6dof), limit_angle_xyz_min,
limit_angle_xyz_max (for 6dof), limit_angle_x_min, limit_angle_x_max (for hinge).
- PyApi: dropped python-function limit_cone_min. 

.:. Extra:
UI Changes:
- renamed "RigidBody Joint" to "Rigid Boidy Joint" 
- reorganized UI to conform with other parameters (e.g. Limit Rot)
- added dis/active all over the place :)

release/scripts/ui/properties_object_constraint.py

@@ -535,32 +535,86 @@ class ConstraintButtonsPanel():
             layout.label(text="Limits:")
             split = layout.split()
 
-            col = split.column(align=True)
-            col.prop(con, "use_angular_limit_x", text="Angular X")
-            col.prop(con, "use_angular_limit_y", text="Angular Y")
-            col.prop(con, "use_angular_limit_z", text="Angular Z")
+            col = split.column()
+            col.prop(con, "use_angular_limit_x", text="Angle X")
+            subcol = col.column()
+            subcol.active  =con.use_angular_limit_x
+            subcol.prop(con, "limit_angle_max_x", text="")
 
             col = split.column()
-            col.prop(con, "limit_cone_min", text="")
+            col.prop(con, "use_angular_limit_y", text="Angle Y")
+            subcol = col.column()
+            subcol.active  =con.use_angular_limit_y
+            subcol.prop(con, "limit_angle_max_y", text="")
+
             col = split.column()
-            col.prop(con, "limit_cone_max", text="")
+            col.prop(con, "use_angular_limit_z", text="Angle Z")
+            subcol = col.column()
+            subcol.active  =con.use_angular_limit_z
+            subcol.prop(con, "limit_angle_max_z", text="")
 
         elif con.pivot_type == 'GENERIC_6_DOF':
             layout.label(text="Limits:")
             split = layout.split()
-
+    
             col = split.column(align=True)
             col.prop(con, "use_limit_x", text="X")
+            sub = col.column()
+            sub.active = con.use_limit_x
+            sub.prop(con, "limit_min_x", text="Min")
+            sub.prop(con, "limit_max_x", text="Max")
+            
+            col = split.column(align=True)
             col.prop(con, "use_limit_y", text="Y")
+            sub = col.column()
+            sub.active = con.use_limit_y
+            sub.prop(con, "limit_min_y", text="Min")
+            sub.prop(con, "limit_max_y", text="Max")
+            
+            col = split.column(align=True)
             col.prop(con, "use_limit_z", text="Z")
-            col.prop(con, "use_angular_limit_x", text="Angular X")
-            col.prop(con, "use_angular_limit_y", text="Angular Y")
-            col.prop(con, "use_angular_limit_z", text="Angular Z")
+            sub = col.column()
+            sub.active = con.use_limit_z
+            sub.prop(con, "limit_min_z", text="Min")
+            sub.prop(con, "limit_max_z", text="Max")
+    
+            split = layout.split()
+    
+            col = split.column(align=True)
+            col.prop(con, "use_angular_limit_x", text="Angle X")
+            sub = col.column()
+            sub.active = con.use_angular_limit_x
+            sub.prop(con, "limit_angle_min_x", text="Min")
+            sub.prop(con, "limit_angle_max_x", text="Max")
+    
+            col = split.column(align=True)
+            col.prop(con, "use_angular_limit_y", text="Angle Y")
+            sub = col.column()
+            sub.active = con.use_angular_limit_y
+            sub.prop(con, "limit_angle_min_y", text="Min")
+            sub.prop(con, "limit_angle_max_y", text="Max")
+    
+            col = split.column(align=True)
+            col.prop(con, "use_angular_limit_z", text="Angle Z")
+            sub = col.column()
+            sub.active = con.use_angular_limit_z
+            sub.prop(con, "limit_angle_min_z", text="Min")
+            sub.prop(con, "limit_angle_max_z", text="Max")
 
-            col = split.column()
-            col.prop(con, "limit_generic_min", text="")
-            col = split.column()
-            col.prop(con, "limit_generic_max", text="")
+        elif con.pivot_type == 'HINGE':
+            layout.label(text="Limits:")
+            split = layout.split()
+
+            row = split.row(align=True)
+            col = row.column()
+            col.prop(con, "use_angular_limit_x", text="Angle X")
+
+            col = row.column()
+            col.active = con.use_angular_limit_x
+            col.prop(con, "limit_angle_min_x", text="Min")
+            col = row.column()
+            col.active = con.use_angular_limit_x
+            col.prop(con, "limit_angle_max_x", text="Max")
 
     def CLAMP_TO(self, context, layout, con):
         self.target_template(layout, con)
@@ -736,4 +790,4 @@ def unregister():
     bpy.utils.unregister_module(__name__)
 
 if __name__ == "__main__":
-    register()
+    register()