[TBC] Gruul's Lair

[Gultask]

Gruul the Dragonkiller

List of (sniffed) spells:

Hurtful Strike Primer (33812) -- Dummy Hurtful Strike (33813) -- didn't actually seen this one Cave In (36240) Growth (36300) Reverberation (36297) Ground Slam (39188) -- Gruul, self-cast, dummy Ground Slam (33525) -- Gruul, AoE, Scipt Effect (TARGET_SRC_CASTER, TARGET_UNIT_SRC_AREA_ENEMY) Tractor Beam Creator (33496) -- Spawns 'Invisible Tractor Beam Source' Look Around (33965) -- Self-Stun cast after Ground Slam. Prevents boss from moving. Ground Slam (39187) -- No caster/ self-cast, triggers 33572 Gronn Lord's Grasp (33572) Stoned (33652) Shatter (33654) -- SCRIPT_EFFECT Shatter (33671) -- Damage

Possibly related server-side spells	ID	Name_lang_enus
33495	Summon Random Tractor
33497	Tractor Beam
33514	Summon Random Tractor
33515	Summon Random Tractor
33516	Summon Random Tractor
33517	Summon Random Tractor
33518	Summon Random Tractor
33519	Summon Random Tractor
33520	Summon Random Tractor
39186	Summon Random Tractor
33521	Hate This Target and Aggro
33524	Hate This Target
33609	Hate This Target and Aggro 2 sec later
33673	Shockwave

I'm still wondering about an aggro mechanic. The Hate spells were just nearby enough to catch attention.

Ground Slam

18:56:27.380 - (Cast) SpellID: 39188 (39188) - Self-Cast 18:56:27.380 - (Cast) SpellID: 33525 (33525) - Spell Start 18:56:27.592 - SMSG_CHAT 18:56:28.377 - (Cast) SpellID: 33525 (33525) - AoE 18:56:28.388 - SMSG_MOVE_KNOCK_BACK 18:56:28.416 - (Cast) SpellID: 33496 (33496) 18:56:28.589 - (Cast) SpellID: 33965 (33965) 18:56:29.790 - Invisible Tractor Beam Source Destroyed 18:56:30.385 - (Cast) SpellID: 39187 (39187) - AoE - Applies Aura - NO SPELL_START 18:56:31.392 - (Cast) SpellID: 33572 (33572) - No SPELL_START Every second after another cast of 33572 18:56:35.388 - (Cast) SpellID: 33652 (33652) - Self-Cast on Player 18:56:37.047 - (Cast) SpellID: 33654 (33654) - Spell Start 18:56:38.072 - (Cast) SpellID: 33671 (33671) - Self-Cast on Player

The knock back from Ground Slam is actually the summoning of several 'Invisible Tractor Beam Source' creatures, casting Tractor Beam (33497) at their designated player.

Invisible Tractor Beam Source spawns radially around a player. Pictured: Sniffed spawns where I tried my best to maintain the same position and orientation in each cast. The blood elf represents the player character. 2 casts were due to bad positioning and me trying to find a good spot. 1 was intentional.

Example 2: I tried my best to keep my orientation static throughout the fight

They have the same orientation as the target player, and spawn around 35y (Exact) from them. One for each player is spawned, including pets.

Sniffed spawns of a raid-like setting where 3 Ground Slams occur throughout the fight

First cast spawns 30  Second cast spawns 27  Third cast spawns 26 

Hypothesis 1: Each spell determines the fixed angle of which the Souce creature will spawn

I've tried to line myself up every time, with the same orientation as well, but results are vastly different. I do, however, believe this could be the case, as tiny variations to orientation could be causing massive changes in the resulting angle.

Hypothesis 2: Each spell provides a range of angles on which the Source creature will spawn

Looking at the results, there are several sections where the spawn is more common, and some sections where there are no spawns at all. In my opinion this is the closest one so far to true Blizzlike. There are also obvious patterns in play.

Hypothesis 3: There is a random 360-degree angle used.

Possibly false as it would result in a more uniform distribution with no patterns being shown.

Possible Implementations

Let's assume there are 8 spells used. If using 8 fixed angles, then they could arrange closely with the 8-directional movement style. I.e. each spell has an internal angle of 45. If assuming angle ranges are used instead, then why are some spots empty? Do some spells not cast at all? Are they broken? Or are they staggered? 8 sections holding 25 degrees each can add up to 200 degrees total, with 180 left to spare as dead-zones.

Or it could very well be broken in Retail, and supposed to be 360-degrees 🤷

Other Notes:

1. While standing with your head against the gate, the spawn point of the Source creature will always be the same, with all exact values, and standing on the other side of the gate.
2. These creatures can be LoS'd
3. If there is not enough room for them to spawn, the source creature will spawn at the nearest point possible. See the one in front of the log in the picture shown above. It was likely blocked by the geometry.
4. The one on top of the log spawned there when I was standing there. My character barely moved but still performed the Shockwave visual.
5. Upon being hit by Tractor Beam and immediately on landing. There is a visual cast resembling Thunder Clap. I believe this to be Shockwave (33673) due to ID proximity.
6. I believe the angle of the spawn is related to the player's Orientation, as their orientation is the same as the creatures.
7. There is no discernable pattern to which angles you are thrown. You can be thrown twice at the same general direction (angle range from Hypothesis 2) back-to-back.

[Gultask]

Maulgur - reserved

[Gultask]

Trash - reserved

[Gultask]

reserved for gameobject / other notes