Looking at the Code snipet Below. In the Universe Type, UpdateAllObjects function. How can I cast if the Objects:Universe is a Tplanet or TShip.
What I have does not work. This code will not run as is because I removed a lot of stuff to post.
The Error I get is Expression of Type Universe can't be invoked.
Thanks in Advance for any help
Global ObjectList:Tlist=New Tlist
Type Universe
Method Draw() Abstract
Method remove()
Link.Remove
End Method
Method AddLast( list:TList )
Link=List.AddLast( Self )
End Method
Function DrawAllObjects()
For Local Objects:Universe=EachIn ObjectList
If Objects(TPlanet)<>Null
' DrawText "Planet",Objects.Position.X,Objects.Position.Y+60
End If
Objects.Draw()
Next
End Function
End Type
Type TPlanet Extends Universe
Method Draw()
DrawOval Position.X-25,Position.Y-25,50,50
End Method
Function Create:TPlanet(X:Float,Y:Float,M:Float)
Local Planet:TPlanet=New TPlanet
Planet.AddLast(ObjectList:Tlist)
Return Planet
End Function
End Type
Type TShip Extends Universe
Method Draw()
DrawRect Position.X-2,Position.Y-2,5,5
End Method
Function Create:TShip(X:Float,Y:Float,M:Float)
Local Ship:TShip=New TShip
Ship.AddLast(ObjectList:Tlist)
Return Ship
End Function
End Type
Repeat
Cls
Universe.DrawAllObjects()
Flip
Until KeyHit(Key_Escape)
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