Spell Missile info.

[highvoltz]

Hi
This c# source shows how to get details for all missile/projectiles currently in flight such as a fireballs or arrows. The source contains info such as caster, target, location, start location and impact location. It is written for Honorbuddy but can be ported easily.

 /// <summary>
        /// Returns the spell missiles.
        /// </summary>
        /// <returns></returns>
        public static IEnumerable<MissileInfo> GetMissiles()
        {
           // pointer taken from Wow 5.0.5.16048
            var missilePtr = StyxWoW.Memory.Read<IntPtr>((IntPtr)0xC2A448, true);
            while (missilePtr != IntPtr.Zero)
            {
                yield return new MissileInfo(missilePtr);
                missilePtr = StyxWoW.Memory.Read<IntPtr>(missilePtr + 392);
            }
        }

       #region Nested type: MissileInfo

        public class MissileInfo
        {
            public MissileInfo(IntPtr baseAddress)
            {
                _internalMissileInfo = StyxWoW.Memory.Read<InternalMissileInfo>(baseAddress);
            }
            
            public uint Index {  get { return _internalMissileInfo.Index; } }
            public WoWUnit Caster { get { return ObjectManager.GetObjectByGuid<WoWUnit>(_internalMissileInfo.CasterGuid); } }
            public ulong CasterGuid { get { return _internalMissileInfo.CasterGuid; } }

            public WoWUnit Target { get { return ObjectManager.GetObjectByGuid<WoWUnit>(_internalMissileInfo.TargetGuid); } }
            public ulong TargetGuid { get { return _internalMissileInfo.TargetGuid; } }

            public WoWSpell Spell { get { return WoWSpell.FromId(_internalMissileInfo.SpellId); } }
            public int SpellId { get { return _internalMissileInfo.SpellId; } }

            public WoWPoint Pos { get { return _internalMissileInfo.Pos; } }

            public WoWPoint FirePos { get { return _internalMissileInfo.FirePos; } }

            public WoWPoint ImpactPos { get { return _internalMissileInfo.ImpactPos; } }

            private InternalMissileInfo _internalMissileInfo;

            [StructLayout(LayoutKind.Sequential)]
            private struct InternalMissileInfo // allot of fields left out.
            {
                public readonly uint Index;
                private readonly uint _dword4;
                public readonly ulong CasterGuid; // +0x8
                public readonly ulong CasterGuid2; // +0x10
                public readonly ulong TargetGuid; // +0x18
                private readonly uint dword20;
                private readonly uint dword24;
                private readonly uint dword28;
                public readonly int SpellId; // +0x2C
                private readonly uint _dword30;
                private readonly uint _dword34;
                private readonly uint dword38;
                private readonly uint _dword3C;
                private readonly uint _dword40;
                public readonly WoWPoint Pos; // + 0x44
                public readonly WoWPoint FirePos; // + 0x50
                public readonly WoWPoint ImpactPos; // + 0x5C
            }
        }

[Frosttall]

Thank you, +rep

Could you explain what you've reversed for that?

[highvoltz]

Thank you, +rep

Could you explain what you've reversed for that?

I work on a dungeon bot (Dungeonbuddy for Honorbuddy) and I needed a way to avoid getting hit by some boss abilities

[demonguy]

+ rep
Quite good resource...
i have another question... Is "targetingArea" also a misiile? for example, one of the daily quest of Golden Lotus, you're requied to slaid 3 Black Drogon, which will cast spell "Lightning Pool", before it hits you , there is a black circle on where you stand.. i mean is this circle a part of the misiile? how to get its model file name and position?

And if convenience, would mind explain how to find this stuff? A brief summary is lovely enough

[Frosttall]

I work on a dungeon bot (Dungeonbuddy for Honorbuddy) and I needed a way to avoid getting hit by some boss abilities

Thank you, but I actually meant which functions you have reversed.

Its my goal to understand it and not just copy&paste the things.

Sent from my GT-I9100 using Tapatalk 2

[TOM_RUS]

Thank you, but I actually meant which functions you have reversed.

Its my goal to understand it and not just copy&paste the things.

Sent from my GT-I9100 using Tapatalk 2

I think that's from CMissile::FireMissiles @ 0x00857820

[highvoltz]

+ rep
Quite good resource...
i have another question... Is "targetingArea" also a misiile? for example, one of the daily quest of Golden Lotus, you're requied to slaid 3 Black Drogon, which will cast spell "Lightning Pool", before it hits you , there is a black circle on where you stand.. i mean is this circle a part of the misiile? how to get its model file name and position?

And if convenience, would mind explain how to find this stuff? A brief summary is lovely enough

This ability is very likely a missile that is targeting the ground. All missiles targeting the ground have TargetGuid set to 0, you can get the target location from ImpactPos.

The model info is likely stored in same struct, I just never bother looking for it. The struct size is 392 bytes, I only looked at a small portion of it and briefly. I found the pointer by reversing one of the Missile: functions, don't recall exactly which one it was.

Also big props to Tom_Rus, your ida pro db has helped me tremendously

[TOM_RUS]

The struct size is 392 bytes

The size seems to be bigger than that. Something around 484 bytes: CMissile::CMissile constructor @ 0x00855A50, struct

[highvoltz]

The size seems to be bigger than that. Something around 484 bytes: CMissile::CMissile constructor @ 0x00855A50, struct

Yeah that's right, not sure what I was thinking when I posted that. Pointer to next struct is at +392 ( 0x188 ). I see you had been busy, thanks for sharing .

[demonguy]

Ring of Frost, one of mage's spells, there is a targetArea while casting (it's not a object , i'm sure, i mean the one which appears while casting, not when casting finished), but there is no missiles at all...

[demonguy]

0x34 is SpellVisualID which links to spellVisual.dbc

[Brandows]

So what exactly does this code benefits if i may ask ? :O