Use COMPAT_ENGINES instead of RenderEngine.use_game_engine for panel poll methods

This mostly affects physics panels. Any engines relying on
RenderEngine.use_game_engine flag to show/hide panels will need to be
updated. The COMPAT_ENGINES technique is how we usually deal with this.
One issue with use_game_engine is that I cannot find a way to set it; it
appears only the BGE can set it. This means (without this commit)
external RenderEngines cannot get rid of the default physics panels.

The RE_GAME flag (the C flag behind use_game_engine) is pretty hacky
and we should look into removing its usage where possible.

1 files changed, 6 insertions, 3 deletions

diff --git a/release/scripts/startup/bl_ui/properties_physics_rigidbody.py b/release/scripts/startup/bl_ui/properties_physics_rigidbody.py
index e7225d73e41..eeb21c046bf 100644
--- a/release/scripts/startup/bl_ui/properties_physics_rigidbody.py
+++ b/release/scripts/startup/bl_ui/properties_physics_rigidbody.py
@@ -29,12 +29,13 @@ class PHYSICS_PT_rigidbody_panel:
 
 class PHYSICS_PT_rigid_body(PHYSICS_PT_rigidbody_panel, Panel):
     bl_label = "Rigid Body"
+    COMPAT_ENGINES = {'BLENDER_RENDER'}
 
     @classmethod
     def poll(cls, context):
         obj = context.object
         return (obj and obj.rigid_body and
-                (not context.scene.render.use_game_engine))
+                (context.scene.render.engine in cls.COMPAT_ENGINES))
 
     def draw(self, context):
         layout = self.layout
@@ -55,12 +56,13 @@ class PHYSICS_PT_rigid_body(PHYSICS_PT_rigidbody_panel, Panel):
 
 class PHYSICS_PT_rigid_body_collisions(PHYSICS_PT_rigidbody_panel, Panel):
     bl_label = "Rigid Body Collisions"
+    COMPAT_ENGINES = {'BLENDER_RENDER'}
 
     @classmethod
     def poll(cls, context):
         obj = context.object
         return (obj and obj.rigid_body and
-                (not context.scene.render.use_game_engine))
+                (context.scene.render.engine in cls.COMPAT_ENGINES))
 
     def draw(self, context):
         layout = self.layout
@@ -99,13 +101,14 @@ class PHYSICS_PT_rigid_body_collisions(PHYSICS_PT_rigidbody_panel, Panel):
 class PHYSICS_PT_rigid_body_dynamics(PHYSICS_PT_rigidbody_panel, Panel):
     bl_label = "Rigid Body Dynamics"
     bl_default_closed = True
+    COMPAT_ENGINES = {'BLENDER_RENDER'}
 
     @classmethod
     def poll(cls, context):
         obj = context.object
         return (obj and obj.rigid_body and
                 obj.rigid_body.type == 'ACTIVE' and
-                (not context.scene.render.use_game_engine))
+                (context.scene.render.engine in cls.COMPAT_ENGINES))
 
     def draw(self, context):
         layout = self.layout