Checking the position of entities

[dragonlordsd]

I was working on a scenario, and I was wondering how you would go about creating a function that relied on items being within a certain area to be carried out.

The logic I'm looking for would work something like this:

When [Item] is used on [Entity]:

If [entity1] is in [scriptarea1]
if [entity2] is in [scriptarea2]
if [entity3] is in [script area3]
create [Itemkey] at [scriptarea4]

The idea is to get the player to perform like a summoning ritual or something.

I know how to create items, but I don't know how to make a function conditional on the position of an entity.

Any help would be appreciated

Here's a screen shot of the puzzle layout:

  2011-05-05_00002.jpg (Size: 183.12 KB / Downloads: 161)

  2011-05-05_00004.jpg (Size: 289.11 KB / Downloads: 165)