I had inserted all the routines in my hack and I'm kind of glad that it doesn't crash the game or make any unwanted errors, well my problem is even though I set the percentage value of double wild pokemon appearance to 64, which is 100%, nothing happens. The grass ID is the default, 0xD, and all are fine.
Do you have any idea why setting it to 64 doesn't create a 100% double wild pokemon appearance?
I don't have an IDA and everything you said (at least the way you said) seems so much above my current level. =P
Maybe checking the Evolutionary Stones won't give you an idea what routines they call when used in a Pokémon...
I asked this, because me and joexv were thinking how we could bypass the problem with loosing Shellder when evolution is cancelled. kearnseyboy6 told me something about the Evolutionary Stones not being cancellable, so I thought about putting it to run with Slowpoke's evolution. That possible, right?