*** lualevelgenerator.cpp line 118 (add)
   ...
   method(LuaLevelGenerator, setGameTime),
+  method(LuaLevelGenerator, pointCanSeePoint),


*** lualevelgenerator.cpp line 164 (add all)

S32 LuaLevelGenerator::pointCanSeePoint(lua_State *L)
{
   static const char *methodName = "LuaLevelGenerator:pointCanSeePoint()";
   checkArgCount(L, 2, methodName);
   Point point1 = LuaObject::getPoint(L, 1, methodName);
   Point point2 = LuaObject::getPoint(L, 2, methodName);

   return returnBool(L, gServerGame->getGridDatabase()->pointCanSeePoint(point1,point2));
}


*** lualevelgenerator.h line 73
   ...
   S32 getPlayerCount(lua_State *L);
+  S32 pointCanSeePoint(lua_State *L);



***  level  *** (script line must be at the botton)

GameType 8 10
LevelName zzzzz
LevelDescription
LevelCredits
GridSize 255
MinPlayers 0
MaxPlayers 0
Team Blue 0 0 1
BarrierMaker 50 -1 -1 1 1
Spawn 0 0.7 -0.5 
Script TT.levelgen


***  script  ***

Pt1 = Point(10,0)
Pt2 = Point(-10,0)
logprint(levelgen:pointCanSeePoint(Pt1,Pt2) )

***  it outputs "false", if barrier was not in the way it output true.