You should set the event to
Collision trigger and set it as supercow said.
Otherwise, you could trigger it in
parallel process, set
phasing mode on and set it as below:
#comment: calculate X difference>Variable[1] = This event X
>Variable[1] -= Player X
#comment: calculate Y difference>Variable[2] = This event Y
>Variable[2] -= Player Y
#comment: setting branches>Conditional Branch: Variable[1] == 0
>>Conditional Branch: Variable[2] == 0
#comment: deal damage (this is an example)>>>Change HP - Entire party: -50
>>End
>End
If you set every boulder as above, it should work. I've used something similar many times...
You can use
the very same two variables for every boulder.
I know it seems strange, but I enure you it works

Jens
Jens
This post has been edited by Jens of Zanicuud: Feb 2 2012, 11:52 PM