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 How to do a rain or a snow fx?
Basically you have to use a dynamic object for each rain drop or snow flake.
You can use consecutive ids for easy access and you will have to move them in an update function
called in the room update, or if the effect will be present in most of the rooms, you can
call it in the game update handler.
An example of the above technique is implemented in the Winter tech demo.
How to do an (evil) mirror Dizzy?
You should have a dynamic brush that you move and set according to the player.
If it must be in the mirror, use the O_FLIP.
Note that the player's position is at it's bottom center, not at the top left,
as you should give it to the dynamic brush.
For better syncronization you may want to do the settings after the player's was updated,
like in the AfterUpdate handler.
I think Dreamworld Dizzy has implemented this technique - check it out.
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