[Other] Adding trigger events

[Fespy]

This is my first time making a ROM hack. I'm having trouble making a trigger event (not sure if that's the right term for it)
But basically an example of what I would like to do is to make a trainer appear/disappear only after defeating another trainer.
Any help or point in the right direction would be greatly appreciated.

(The game is a hack of pokemon emerald if that makes any difference)

 

[rortik]

Right, so here's what you need to do:

Make one trainer set a flag when defeated. They all do this automatically, to make sure you don't repeat the fight. If you open an already written script, you can see this flag. If you're making your own, add one.

You also need to use showsprite and hidesprite to make people appear/dissappear as you need. Make it so that when the flag is set, the sprite appears. The flag is only set when you beat a trainer.... and there you go.

I'm not the best scripter, but if you need more help ask!

 

[Fespy]

Thanks! I'll try that soon and let you know how it works.

 

[Christos]

Say the person you want appearing and disappearing has "1FF" as Person ID. That Person ID refers to a flag. The person needs to have a Person ID otherwise it'll just appear again after disappearing.

If the person is not on the same map as the trainer battle, then by using "setflag 0x1FF" in the trainer battle script, the person, and any other person event using ID 1FF will disappear. Using "clearflag 0x1FF" again will make it reappear.

Now, if it's on the same map, using "hidesprite 0x[peoplenumber]" or "showsprite" works as well, and when the person is hidden that means flag 0x1FF will automatically be set, or cleared if the sprite is shown.