The action data block has the following format:

Nr. | TYPE | LENGTH | Description -----| ----- | ------- | ----------- 1 | BYTE | 1 | Unknown. Is always 0 though. 2 | BYTE| 1| Action Type (confirmed) 3| BYTE| 1| Not sure. It seems half an id and half an action identifier. By building generators the higher 4 bit are 0x8 lower 4 bit: 1 means this action is executed by player with ID 1, does not always correspond to the order of players in the header. I think this might be the position of the player base. So with fixed positioning this corresponds to the player ID, that's why that only works in fixed games.<br>Observation on lower bits: Seem to indicate player base location. <br>Observation on higher bits: Values that have been observed so far [u8]: 0, 1, 2, 3, 4, 5, 128, 129, 130, 131, 132, 133 4| BYTE| 1| Player ID (confirmed) 5| BYTE| 1| Unknown<br>Values that have been observed so far [u8]: 3 6-7| BYTE| 2| A counter for the actions performed by this player. (confirmed)<br> Starts at 0. This means there is a limit of 65536.<br> Best read as u16 LittleEndian 8| BYTE| 1| 0x10 = build units at HQ, tier upgrade (T2, T3), building upgrade (e.g. Turret -> Missile Turret)<br> 0x20 = unit upgrades, movement<br>0x42 = was spotted with action code 56<br>0x44 = was spotted with action code 56<br>0x0 = seems related to power nodes and placeable entities (Turret, Mines)<br>(seems like any action performed by HQ like building or setting rally point is 10 while every action performed by a unit is 20<br>Values that have been observed so far [u8] (hex): 0 (0x0), 16 (0x10), 32 (0x20), 66 (0x42), 68 (0x44) 9| BYTE| 1| Unknown<br> Values that have been observed so far [u8]: 0, 1, 93 10| BYTE| 1| Always changes together with 0x10 or 0x20 two bytes before. This is most likely the player location/building/unit id<br><br> Values that have been observed so far [u8] in 1v1: 3, 74, 88, 120, 169, 179, 195<br> Values that have been observed so far [u8] in 2v2: 195, 202<br> Values that have been observed so far [u8] in 3v3: 0, 3, 195<br>Values that have been observed so far [u8] additionally: 122 11| BYTE| 1| Most likely the unit identifier. But how/where is it assigned? 12-13| BYTE| 2 | Seems to provide more context for the action (see general observations) 14| BYTE| 1| Identifier for e.g. wargear, unit, global ability.<br><br>When building a power node this has been observed to be 107<br> When building a generator this has been observed to be 98<br>When using global abilities this has been observed to be 115, 123, 125, 124, 119 15-19| DWORD| 4| STILL NOT CONFIRMED<br>Identifier for the item (unit, upgrade, wargear)<br>See the item codes file for these values<br><br>Identifier for the canceled unit, upgrade, wargear<br>These are numbered in the order they are queued.<br>Units and Base Tiers share the same numbering.<br> Wargear is on a different ordering.<br> Upgrades have a different ordering for every unit. These actions are numbered: upgrades (0x30) and unknown (0x2E)

General observations:

• Abilities that can be toggled are identical apart from the action counter. As far as the game is concerned you have used the same ability twice.

• Targettable abilities seem to also have location information stored in them (probably origin and target coordinates)

• Unit id (once unit is on the field) is not the same as the unit/item id when its purchased at the HQ

• Action data fields 12 + 13 seem to decode the following (amongst other stuff):

  • (1, 3) => Something to do with action type 48; also seen with action type 23
  • (1, 5) => Capturing
  • (1, 13) => Movement
  • (3, 26) => Movement + Direction
  • (5, 4) => Purchase
  • (6, 17) => Movement
  • (12, 4) => Unknown (in combination with action type 96)
  • (12, 14) => Unknown (in combination with action type 96)
  • (18, 17) => Movement
  • (15, 35) => Single target, building (e.g. Webway Gate)
  • (25, 5) => Non-targettable, affects every target-type at once (e.g. Angels of Death, Blessing of the Omnissiah, Swift Movement) or is called in at base (e.g. Seer Council). Also applicable to unit abilities that are self-targetting
  • (26, 9) => Single target, unit or global ability (e.g. Scout grenades, Farseer Guide, For the Emperor, Crackshot)
  • (26, 19) => Single target with no secondary projectiles (e.g. Drop Pod, Terminators, Eldritch Storm)
  • (28, 23) => Unknown (in combination with action type 85)
  • (28, 59) => Multiple targets but no unit call-in (e.g. Orbital Bombardement)
  • (28, 71) => Multiple targets and unit call-in (e.g. Autarch)
  • (32, 84) => Something to do with action type 48
  • (39, 16) => Unknown (in combination with action type 94)

• Canceling a unit purchase functions like clearing an item from an array without removing the item itself ("nulling" instead of delete). There exists an internal counter that keeps track of each distinct purchase even if the same unit is purchases and immediately cancelled. That will still cause the counter to increment.

Action Types

• 1 => Ability on placeable object
• 3 => Build unit
• 5 => Cancel unit or wargear
• 9 => Attack from placeable object (e.g. turret)
• 11 => Set rally point
• 15 => Upgrade building
• 23 => Exit building
• 43 => Stop move
• 44 => Move
• 47 => Capture point
• 48 => Attack
• 49 => Reinforce unit
• 50 => Purchase wargear
• 51 => Cancel wargear purchase
• 52 => Attack move
• 53 => Ability on unit
• 56 => Enter building or vehicle
• 58 => Exit vehicle
• 61 => Retreat
• 70 => Force melee
• 71 => Toggle stance
• 78 => Place building
• 85 => Global ability
• 89 => Unknown
• 94 => Unknown // source 0x0
• 96 => Unknown // source 0x0
• 98 => Unknown // source 0x0

Global Abilities

Space Marines (Techmarine, Apothecary, Force Commander)

Name | 1 | Action Type| Player location ID | Player ID |5|Action Counter I|Action Counter II|Action Source (u8)|9|10|Unit/Player ID|Action Context I|Action Context II|Item ID|15|16|17|18|19|20 -|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|- Blessing of the Omnissiah | 0| 85| 1| 233| 3| 0| 0| 0| 0| 3| 233| 25| 5| 115| 3| 0| 0 Drop Pod | 0| 85| 1| 233| 3| 1| 0| 0| 0| 3| 233| 26| 19| 123| 3| 0| 0| 1| 0| 2| 74| 75| 68| 193| 72|5| 210| 66| 126| 168| 37 Venerable Dreadnought | 0| 85| 1| 233| 3| 4| 0| 0| 0| 3| 233| 26| 19| 125| 3| 0| 0| 1| 0| 2| 90| 174| 28| 65| 51| 243| 209| 66| 100| 222| 42 Terminator Call-in |0| 85| 1| 233| 3| 5| 0| 0| 0| 3| 233| 26| 19| 124| 3| 0| 0| 1| 0| 2| 152| 31| 118| 64| 96| 111| 208| 66| 65| 114| 31 Orbital Bombardement | 0| 85| 1| 233| 3| 6| 0| 0| 0| 3| 233| 28| 59| 119| 3| 0| 0| 1| 0| 2| 12| 192| 220| 192| 58| 250| 209| 66| 229| 136| 254| 66| 2| 198| 116| 30| 65| 54| 139| 208| 66| 232| 162| 242| 66| 2| 128| 5| 29| 62| 113| 165| 203| 66| 228| 233| 217| 66| 2| 77| 154| 140| 193| 230| 2| 204| 66| 148| 187| 239| 66 Larramans Blessing | 0|85|1|233|3|2|0|0|0|3|233|25|5|121|3|0|0 Drop Pod | 0|85|1|233|3|3|0|0|0|3|233|26|19|123|3|0|0|1|0|2|248|94|99|193|16|29|210|66|206|62|38 Angels of Death | 0|85|1|233|3|4|0|0|0|3|233|25|5|114|3|0|0 Terminator Call-in | 0|85|1|233|3|5|0|0|0|3|233|26|19|124|3|0|0|1|0|2|42|238|65|65|50|243|209|66|67|252|40 Orbital Bombardement | 0|85|1|233|3|6|0|0|0|3|233|28|59|119|3|59|119|3|0|0|1|0|2|0|30|115|189|22|77|209|66|24|59|4|67|2|0|30|115|189|22|77|209|66|24|59|4|67|2|0|189|54|63|9|21|209|66|117|205|3|67|2|0|252|45|189|22|77|209|66|159|129|4|67 For the Emperor | 0|85|0|232|3|2|0|0|0|3|232|26|9|117|3|0|0|1|0|4|84 Drop Pod | 0|85|0|232|3|3|0|0|0|3|232|26|19|123|3|0|0|1|0|2|16|16|2|194|51|220|210|66|101|95|44 Assault Terminators | 0|85|0|232|3|4|0|0|0|3|232|26|19|122|3|0|0|1|0|2|174|243|136|193|41|220|210|66|39|120|41 Ranged Terminators | 0|85|0|232|3|21|0|0|0|3|232|26|19|124|3|0|0|1|0|2|52|152|37|193|0|0|180|66|214|222|150 Orbital Bombardement | 0|85|0|232|3|23|0|0|0|3|232|28|59|119|3|0|0|1|0|2|182|98|104|66|44|185|191|66|146|253|30|194|2|182|98|104|66|44|185|191|66|146|253|30|194|2|182|98|104|66|44|185|191|66|146|253|30|194|2|151|124|104|66|10|236|191|66|118|23|31|194

Eldar (Warlock, WSE, Farseer)

Name | 1 | Action Type| Player location ID | Player ID |5|Action Counter I|Action Counter II|Action Source (u8)|9|10|Unit/Player ID|Action Context I|Action Context II|Item ID|15|16|17|18|19|20 -|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|-|- Webway Gate | 0|78|1|233|3|2|0|0|0|3|233|15|35|198|1|0|0|54|10|136|193|86|236|209|66|211|70|37|67|54|10|136|193|86|236|209|66|211|70|38|67|0|0|0|0|0|0 Swift Movement | 0|85|1|233|3|3|0|0|0|3|233|25|5|197|1|0|0 Distort Field | 0|85|1|233|3|4|0|0|0|3|233|26|9|199|1|0|0|1|0|4|86 Autarch Drop | 0|85|1|233|3|5|0|0|0|3|233|28|71|205|1|0|0|1|0|2|132|130|77|65|65|230|209|66|238|79|38|67|2|96|247|232|64|204|11|209|66|185|40|34|67|2|216|235|88|64|142|157|208|66|251|182|32|67|2|64|188|88|191|192|157|208|66|189|175|32|67|2|28|89|150|192|140|230|208|66|252|39|34 Eldritch Storm | 0|85|1|233|3|6|0|0|0|3|233|26|19|201|1|0|0|1|0|2|220|244|156|64|120|27|208|66|17|190|12 Webway Gate | 0|78|1|233|3|2|0|0|0|3|233|15|35|198|1|0|0|250|168|131|193|154|236|209|66|95|52|38|67|250|168|131|193|154|236|209|66|95|52|39|67|0|0|0|0|0|0 Crackshot | 0|85|1|233|3|3|0|0|0|3|233|26|9|198|1|0|0|1|0|4|87 Warpspider Call-in | 0|85|1|233|3|4|0|0|0|3|233|26|19|208|1|0|0|1|0|2|144|136|76|65|106|233|209|66|190|147|38 Autarch | 0|85|1|233|3|5|0|0|0|3|233|28|71|205|1|0|0|1|0|2|24|81|206|64|246|134|209|134|209|66|36|129|35|67|2|240|170|246|64|61|37|208|66|248|46|25|67|2|144|25|23|64|71|32|208|66|19|81|23|67|2|240|153|43|192|2|64|208|66|128|75|24|67|2|40|119|247|192|6|171|208|66|136|140|29 Eldritch Storm | 0|85|1|233|3|6|0|0|0|3|233|26|19|201|1|0|0|1|0|2|56|143|35|64|169|139|205|66|18|196|246 Webway Gate | 0|78|0|232|3|2|0|0|0|3|232|15|35|198|1|0|0|112|54|26|194|42|220|210|66|14|122|41|195|112|54|26|194|42|220|210|66|14|122|40|195|0|0|0|0|0|0 Farsight | 0|85|0|232|3|3|0|0|0|3|232|26|19|204|1|0|0|1|0|2|0|184|204|62|157|240|208|66|72|225|34 Autarch | 0|85|0|232|3|4|0|0|0|3|232|28|71|206|1|0|0|1|