[BPMDisplay] Added SetFromCourse Lua binding.

Docs/Changelog_sm5.txt

@@ -10,7 +10,8 @@ StepMania 5.0 $NEXT | 20110xyy
 
 2011/05/10
 ----------
-* [Sprite] Added SetSecondsIntoAnimation(float) Lua binding. [AJ]
+* [Sprite] Added SetSecondsIntoAnimation Lua binding. [AJ]
+* [BPMDisplay] Added SetFromCourse Lua binding. [AJ]
 
 2011/05/03
 ----------

src/BPMDisplay.cpp

@@ -305,12 +305,23 @@ public:
 		}
 		return 0;
 	}
+	static int SetFromCourse( T* p, lua_State *L )
+	{
+		if( lua_isnil(L,1) ) { p->NoBPM(); }
+		else
+		{
+			const Course* pCourse = Luna<Course>::check( L, 1, true );
+			p->SetBpmFromCourse(pCourse);
+		}
+		return 0;
+	}
 	static int GetText( T* p, lua_State *L )		{ lua_pushstring( L, p->GetText() ); return 1; }
 
 	LunaBPMDisplay()
 	{
 		ADD_METHOD( SetFromGameState );
 		ADD_METHOD( SetFromSong );
+		ADD_METHOD( SetFromCourse );
 		ADD_METHOD( GetText );
 	}
 };