OOP - Casting AOE Spells (Protected LUA)

[Tanaris4]

So I'm able to enable protected lua, like most are. And I now want to experiment with casting AOE spells.

I realize I can execute a macro such as:
/run if IsUsableSpell("Blizzard") and GetSpellCooldown("Blizzard")==0 then CastSpellByName("Blizzard") CameraOrSelectOrMoveStart() CameraOrSelectOrMoveStop() end;

And this will cast Blizzard based on where my mouse pointer is. I was wondering if anyone knew what function WoW uses to find the mouse coordinates? I was hoping I could maybe change this function in a manner so I don't need to actually move the mouse + do the 2D/3D conversions.

And, is there a function that essentially does 3D to 2D? (I know there are threads on doing the implementation, I'm just curious if there is a wow function that does it too)

Thanks!

[Robske]

And, is there a function that essentially does 3D to 2D? (I know there are threads on doing the implementation, I'm just curious if there is a wow function that does it too)

Strange that you state you're OOP but yet you want to call an engine function to do the calculation... Still, if you want to go down that road it would be easiest (imo) to send the 'CMSG_CAST_SPELL' packet yourself by either formatting it manually or have WoW do it for you.

[Tanaris4]

I can't send a packet, I am out of process... the /run is a macro that you just execute

I'm looking for a function to reverse in IDA

[Robske]

I can't send a packet, I am out of process... the /run is a macro that you just execute

I'm looking for a function to reverse in IDA

I see, then your best bet would be CGGameUI::Handle/OnTerrainClick as a starting point, I vaguely remember grabbing the world coordinates of a mouseclick from those functions, so one of the xrefs probably calculates/sets them.
If you want to project the world coordinates yourself, the math's @ 3D projection - Wikipedia, the free encyclopedia

Using a mouseclick for this is very error prone and just plane ugly

[Tanaris4]

Thanks, that's what i was looking for :-) What function should I search for that actually sends the CMSG_CAST_SPELL packet?

[caytchen]

Look into LUA CastSpell, they don't defer sending the packet.

[RivaLfr]

Hi,

Look this http://www.mmowned.com/forums/world-...endpacket.html and this http://www.mmowned.com/forums/world-...endpacket.html

[Neffarian]

Ive used find pattern + asm to do this.
works pretty clean, however you've got to find addresses properly and know what to look for

[Tanaris4]

You did it OOP? Or you wrote assembly code (basically, easier injection) that changed certain things? If so, care to share what function you did your digging in?