how to use weapons

How do you use weapons outside of battle(like in zelda) agianst enemies?

(in RPGMXP)

Its called an active battle system theres tons on rmxp.net but not the kind I want so I havnt got one for myself yet (Like I'll ever use it) anyways check there and if u want it for events like if u click on a door it explodes just put it to were wen u touch it it plays se then it shows animation then make a self switch a new page then make it check if the self switch is on and ur done
almost forgot on the second page change the graphic also