How to get Unit's Height and Radius(combat reach?)

[singed420]

After couple months study , finally I get my unlocker done as well as unlocked in game guid for wow native api to interact with.Thanks for all ownedcorers that replys.
Now I got a new problem, which is how to get a Unit's Height and Radius for combat reach? I searched a bit in forum but only saw couple ppl mentioned about object's height offset without any info about how to find it.

I also wonder how the game calculates distance when casting spell to target, is it calculate from player's model center position to target's model center postion, or is it from player's model edge( player's center+player radius) to target's model edge( target's center+target radius)? Cause when using C_Spell.IsSpellInRange to check if spell is in range, most of time when it just get enough distance to return true, it still failed to cast the spell because of not enough distance.

[scizzydo]

After couple months study , finally I get my unlocker done as well as unlocked in game guid for wow native api to interact with.Thanks for all ownedcorers that replys.
Now I got a new problem, which is how to get a Unit's Height and Radius for combat reach? I searched a bit in forum but only saw couple ppl mentioned about object's height offset without any info about how to find it.

I also wonder how the game calculates distance when casting spell to target, is it calculate from player's model center position to target's model center postion, or is it from player's model edge( player's center+player radius) to target's model edge( target's center+target radius)? Cause when using C_Spell.IsSpellInRange to check if spell is in range, most of time when it just get enough distance to return true, it still failed to cast the spell because of not enough distance.

I usually use UnitDetailedThreatSituation to find a few offsets. Combat reach is in there (amongst other lua functions, just the one I go to because of it having quite a few different offsets). Height I don't know a lua one for you, I just know most common models heights thanks to the databases out there and can find it quickly on the CGObject_C, as it's a small struct. The thing with height though is you also need to apply the model scales from the object display struct.

Lastly, if you reverse the IsSpellInRange, it's way more to it than just distances and the combat reach/bounding radius.

[gdfsxwy]

I use the Z-difference between the coordinates under my feet and above my head to obtain the height. AI can provide the closest method between two straight lines, which is the shortest distance between two targets.

[scizzydo]

I use the Z-difference between the coordinates under my feet and above my head to obtain the height. AI can provide the closest method between two straight lines, which is the shortest distance between two targets.

I quit wow a while ago, so not staying fully up to date with changes, you can call the CGUnitDisplay::GetAttachmentPosition with index 18 (most acurate), or use the height *= scales from CGObjectDisplay + (0x50, 0x58, 0x60). Those are the scales that get applied to the units bounding radius (which is factored in the struct with them)

[gdfsxwy]

I quit wow a while ago, so not staying fully up to date with changes, you can call the CGUnitDisplay::GetAttachmentPosition with index 18 (most acurate), or use the height *= scales from CGObjectDisplay + (0x50, 0x58, 0x60). Those are the scales that get applied to the units bounding radius (which is factored in the struct with them)

Thank you very much for your response, Scizzydo. Although I joined the forum early on, I didn't have much time to research it due to work reasons. I am currently recovering from heart disease and have time to improve my cheating tools. I don't understand CGUnitDisplay, index 18， Concepts such as boundary radius and proportion. I have reversed the UnitDetailedThreatSituation and IsSpellInRange to know the combat radius. Please indicate where I am going to study, or point out the clues in the current version of IDA. Research is my only pleasure now. Thank you.