From what I can see you are selecting the units in the group and telling the dummy to pick one of them and cast it on them.
Example
Events
Unit - A unit Starts the effect of an ability
Conditions
(Ability being cast) Equal to Animate Dead
Actions
Set VariableSet Unit[0] = (Triggering unit)
Set VariableSet Point[0] = (Position of (Target unit of ability being cast))
Set VariableSet Group = (Units within 1000.00 of Point[0].)
Unit - Create 1 Footman for (Owner of Unit[0]) at Point[0] facing Default building facing degrees
Set VariableSet Unit[1] = (Last created unit)
Unit - Add Hex to (Last created unit)
Unit Group - Pick every unit in Group and do (Actions)
Loop - Actions
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
If - Conditions
((Picked unit) is alive) Equal to True
((Picked unit) has buff Hex) Equal to False
((Picked unit) is Magic Immune) Equal to False
((Picked unit) is visible to (Owner of Unit[0]).) Equal to True
Then - Actions
Unit - Order Unit[1] to Orc Shadow Hunter - Hex (Picked unit)
Else - Actions
Unit - Add a 0.10 second Generic expiration timer to Unit[1]
Unit Group - Remove all units from Group.
Custom script: call RemoveLocation(udg_Point[0])
this is aoe not chain hex. I plan to limit it to 5 jumps with each jump per 0.25 seconds (by adding casting time to dummy target) and it will jump to a random target within small radius from previous target every time. Just to test it I expanded the range to 1000 and removed limiter in op-picMy nit pick is the group conditions, there's a much easier way to filter, this short and sweet tutorial goes over it.
From what I can see you are selecting the units in the group and telling the dummy to pick one of them and cast it on them.
Lastly (triggering unit) is lost in loops so be sure to tag it with a variable.
Also "Able to attack ground units" condition might be apart of that issue, maybe?
But as @Cheshire says, this won't be a "Chain" visual.
edit: also you need location variables or leaks will bog down your game with nasty memory junk!
createDummy
Events
Unit - A unit Starts the effect of an ability
Conditions
(Ability being cast) Equal to Chain Hex
Actions
Set VariableSet tempoint = (Position of (Target unit of ability being cast))
Set VariableSet TempPlayer = (Owner of (Triggering unit))
Unit - Create 1 dying dummy for TempPlayer at tempoint facing Default building facing degrees
Unit - Add a 0.10 second Generic expiration timer to (Last created unit)
fire hex
Events
Unit - A unit Dies
Conditions
(Unit-type of (Dying unit)) Equal to dying dummy
Actions
Game - Display to (All players) the text: unit died
Set VariableSet tempoint = (Position of (Dying unit))
Set VariableSet AllInRange = (Units within 500.00 of tempoint.)
Unit Group - Remove all units from HexTargets.
Unit Group - Pick every unit in AllInRange and do (Actions)
Loop - Actions
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
If - Conditions
((Picked unit) is alive) Equal to True
((Picked unit) belongs to an enemy of (Owner of (Dying unit)).) Equal to True
(Unit-type of (Picked unit)) Not equal to dummy
(Unit-type of (Picked unit)) Not equal to dying dummy
((Picked unit) has buff Hex) Equal to False
Then - Actions
Unit Group - Add (Picked unit) to HexTargets
Else - Actions
Set VariableSet TempUnit = (Random unit from HexTargets)
Unit - Create 1 dummy for (Owner of (Triggering unit)) at tempoint facing Default building facing degrees
Set VariableSet DummyCaster = (Last created unit)
Unit - Add a 1.00 second Generic expiration timer to DummyCaster
Unit - Add Chain Hex to DummyCaster
Unit - Set level of Chain Hex for DummyCaster to (Level of Chain Hex for (Triggering unit))
Unit - Order DummyCaster to Orc Shadow Hunter - Hex TempUnit
you forgot to remove wards, invisible, fogged and buildings from hex targetsI kind of liked the idea of making a chain spell recursively without needing to use unit indexing etc. I was lazy and didn't remove leaks. basically this just uses a unique type of dummy who's expiration timer provides the "wait" between chain jumps:
He never said he didn't want hex a building.
Cast Chain Hex
Events
Unit - A unit Starts the effect of an ability
Conditions
(Ability being cast) Equal to Chain Hex
Actions
Set VariableSet CH_Index = (CH_Index + 1)
Set VariableSet CH_Duration[CH_Index] = 0
Set VariableSet CH_Bounces[CH_Index] = 0
Set VariableSet CH_Target[CH_Index] = (Target unit of ability being cast)
-------- --------
-------- Create the Unit Group that keeps track of units already hexed by this instance of the spell: --------
Custom script: set udg_CH_WasHit[udg_CH_Index] = CreateGroup()
-------- --------
-------- Create the Dummy that will cast Hex: --------
Set VariableSet CH_PointA = (Position of CH_Target[CH_Index])
Unit - Create 1 Dummy for (Triggering player) at CH_PointA facing Default building facing degrees
Custom script: call RemoveLocation (udg_CH_PointA)
Set VariableSet CH_Dummy[CH_Index] = (Last created unit)
Unit - Add Hex (Dummy) to CH_Dummy[CH_Index]
Unit - Order CH_Dummy[CH_Index] to Orc Shadow Hunter - Hex CH_Target[CH_Index]
Unit Group - Add CH_Target[CH_Index] to CH_WasHit[CH_Index]
-------- --------
-------- Start the timer if it's not already on: --------
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
If - Conditions
CH_Index Equal to 1
Then - Actions
Countdown Timer - Start CH_Timer as a Repeating timer that will expire in 0.05 seconds
Else - Actions
Chain Hex Loop
Events
Time - CH_Timer expires
Conditions
Actions
For each (Integer CH_Loop) from 1 to CH_Index, do (Actions)
Loop - Actions
Set VariableSet CH_Duration[CH_Loop] = (CH_Duration[CH_Loop] + 1)
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
If - Conditions
CH_Duration[CH_Loop] Equal to 5
Then - Actions
Set VariableSet CH_Duration[CH_Loop] = 0
Set VariableSet CH_Bounces[CH_Loop] = (CH_Bounces[CH_Loop] + 1)
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
If - Conditions
CH_Bounces[CH_Loop] Less than or equal to 5
Then - Actions
-------- Bounce --------
Set VariableSet CH_PointA = (Position of CH_Target[CH_Loop])
Set VariableSet CH_Group = (Units within 500.00 of CH_PointA.)
Custom script: call RemoveLocation (udg_CH_PointA)
Set VariableSet CH_Target[CH_Loop] = No unit
Unit Group - Pick every unit in CH_Group and do (Actions)
Loop - Actions
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
If - Conditions
((Picked unit) belongs to an enemy of (Owner of CH_Dummy[CH_Loop]).) Equal to True
((Picked unit) is alive) Equal to True
((Picked unit) is A structure) Equal to False
((Picked unit) is in CH_WasHit[CH_Loop].) Equal to False
Then - Actions
Set VariableSet CH_Target[CH_Loop] = (Picked unit)
Else - Actions
Custom script: call DestroyGroup(udg_CH_Group)
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
If - Conditions
CH_Target[CH_Loop] Not equal to No unit
Then - Actions
Unit - Order CH_Dummy[CH_Loop] to Orc Shadow Hunter - Hex CH_Target[CH_Loop]
Unit Group - Add CH_Target[CH_Loop] to CH_WasHit[CH_Loop]
Else - Actions
-------- End (no target) --------
Custom script: call DestroyGroup(udg_CH_WasHit[udg_CH_Loop])
Unit - Remove CH_Dummy[CH_Loop] from the game
Set VariableSet CH_Dummy[CH_Loop] = CH_Dummy[CH_Index]
Set VariableSet CH_Duration[CH_Loop] = CH_Duration[CH_Index]
Set VariableSet CH_Bounces[CH_Loop] = CH_Bounces[CH_Index]
Set VariableSet CH_WasHit[CH_Loop] = CH_WasHit[CH_Index]
Set VariableSet CH_Loop = (CH_Loop - 1)
Set VariableSet CH_Index = (CH_Index - 1)
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
If - Conditions
CH_Index Equal to 0
Then - Actions
Countdown Timer - Pause CH_Timer
Else - Actions
Else - Actions
-------- End (out of bounces) --------
Custom script: call DestroyGroup(udg_CH_WasHit[udg_CH_Loop])
Unit - Remove CH_Dummy[CH_Loop] from the game
Set VariableSet CH_Dummy[CH_Loop] = CH_Dummy[CH_Index]
Set VariableSet CH_Duration[CH_Loop] = CH_Duration[CH_Index]
Set VariableSet CH_Bounces[CH_Loop] = CH_Bounces[CH_Index]
Set VariableSet CH_WasHit[CH_Loop] = CH_WasHit[CH_Index]
Set VariableSet CH_Loop = (CH_Loop - 1)
Set VariableSet CH_Index = (CH_Index - 1)
If (All Conditions are True) then do (Then Actions) else do (Else Actions)
If - Conditions
CH_Index Equal to 0
Then - Actions
Countdown Timer - Pause CH_Timer
Else - Actions
Else - Actions
