#SCENERY - Some fixes for kissing getLife function on some objects, a…

…nd life points being zero on some objects

Moose Development/Moose/Wrapper/Scenery.lua

@@ -48,8 +48,8 @@ function SCENERY:Register( SceneryName, SceneryObject )
 
   self.SceneryObject = SceneryObject
 
-  if self.SceneryObject then
-    self.Life0 = self.SceneryObject:getLife()
+  if self.SceneryObject and self.SceneryObject.getLife then -- fix some objects do not have all functions
+    self.Life0 = self.SceneryObject:getLife() or 0
   else
     self.Life0 = 0
   end
@@ -59,14 +59,22 @@ function SCENERY:Register( SceneryName, SceneryObject )
   return self
 end
 
---- Returns the Value of the zone with the given PropertyName, or nil if no matching property exists.
+--- Returns the value of the scenery with the given PropertyName, or nil if no matching property exists.
 -- @param #SCENERY self
 -- @param #string PropertyName The name of a the QuadZone Property from the scenery assignment to be retrieved.
 -- @return #string The Value of the QuadZone Property from the scenery assignment with the given PropertyName, or nil if absent.
 function SCENERY:GetProperty(PropertyName)
   return self.Properties[PropertyName]
 end
 
+--- Checks if the value of the scenery with the given PropertyName exists.
+-- @param #SCENERY self
+-- @param #string PropertyName The name of a the QuadZone Property from the scenery assignment to be retrieved.
+-- @return #boolean Outcome True if it exists, else false.
+function SCENERY:HasProperty(PropertyName)
+  return self.Properties[PropertyName] ~= nil and true or false
+end
+
 --- Returns the scenery Properties table.
 -- @param #SCENERY self
 -- @return #table The Key:Value table of QuadZone properties of the zone from the scenery assignment .
@@ -97,15 +105,15 @@ function SCENERY:GetDCSObject()
   return self.SceneryObject
 end
 
---- Get current life points from the SCENERY Object.
+--- Get current life points from the SCENERY Object. Note - Some scenery objects always have 0 life points.
 --  **CAVEAT**: Some objects change their life value or "hitpoints" **after** the first hit. Hence we will adjust the life0 value to 120% 
 --  of the last life value if life exceeds life0 (initial life) at any point. Thus will will get a smooth percentage decrease, if you use this e.g. as success 
 --  criteria for a bombing task.
 --@param #SCENERY self
 --@return #number life
 function SCENERY:GetLife()
   local life = 0
-  if self.SceneryObject then
+  if self.SceneryObject and self.SceneryObject.getLife then
     life = self.SceneryObject:getLife()
     if life > self.Life0 then
       self.Life0 = math.floor(life * 1.2)
@@ -121,7 +129,7 @@ function SCENERY:GetLife0()
   return self.Life0 or 0
 end
 
---- Check if SCENERY Object is alive.
+--- Check if SCENERY Object is alive. Note - Some scenery objects always have 0 life points.
 --@param #SCENERY self
 --@param #number Threshold (Optional) If given, SCENERY counts as alive above this relative life in percent (1..100).
 --@return #number life
@@ -133,7 +141,7 @@ function SCENERY:IsAlive(Threshold)
   end
 end 
 
---- Check if SCENERY Object is dead.
+--- Check if SCENERY Object is dead. Note - Some scenery objects always have 0 life points.
 --@param #SCENERY self
 --@param #number Threshold (Optional) If given, SCENERY counts as dead below this relative life in percent (1..100).
 --@return #number life
@@ -145,12 +153,13 @@ function SCENERY:IsDead(Threshold)
   end
 end 
 
---- Get SCENERY relative life in percent, e.g. 75.
+--- Get SCENERY relative life in percent, e.g. 75. Note - Some scenery objects always have 0 life points.
 --@param #SCENERY self
 --@return #number rlife
 function SCENERY:GetRelativeLife()
   local life = self:GetLife()
   local life0 = self:GetLife0()
+  if life == 0 or life0 == 0 then return 0 end
   local rlife = math.floor((life/life0)*100)
   return rlife
 end