Entire map damages player but only when in it

So, I want to make an entire map damage the player (IE: Acid rain basically.) But can't use certain scripts, etc. because I want an item in the inventory to be able to reduce the damage given out by it. Later areas will have higher damage amounts too, and have to span across the entire map. Damage from the "Rain" would have to be percent based, and the item would reduce that percent by X percent on use and will continue to reduce that damage until the player uses it again.

What is the damage form? Damage by time or damage by move/tile?


If it's damage by time, it can easily done by common event parallel process, no script needed.


If it's damage by movemend, then you'll probably need a script - this would also be possible by a parallel event, but that event would be rather complex and a script would be easier, for example one of the region event scripts.

Yeah, it's by tile mainly.

like the poison swamp tile with a damage effect?

Sort of, but I want it to be percent based, based on the current map area (IE Call a variable to show what type of tier / strength it is.)

Try this one, and make the common event assigned to the region ID the event that reduces HP after calculating the correct amount:


http://www.himeworks.com/2013/12/region-events/


Then place the Region-ID whereever you want the effect to happen