[Trigger] spell trigger for a complete noob. :D

[ferretpuke]

so, I want to make an ability based off of shockwave that creates a line of frost nova SFX.
kinda hard to explain.
a little like holy arrow in archer wars.
does anyone want to enlighten me on how to do this with triggers?

 

[Pharaoh_]

There are some line effects already in Spells section, you might wanna have a look at:
http://www.hiveworkshop.com/forums/spells-569/gui-poisonwave-v1-3b-mui-final-119389/
That is a good one, that combines MUi and GUI.

 

[Jaijaibinx]

Haven't Tested it yet in a rush if doesnt work tell me an i'll fix it when I get back..

Code

• Frost Nova Line
  • Events
    • Unit - A unit Begins casting an ability
  • Conditions
    • (Ability being cast) Equal to Shockwave
  • Actions
    • Set TempUnit = (Casting unit)
    • Set TempPoint = (Position of TempUnit)
    • Set TempPoint2 = (Target point of ability being cast)
    • Set TempReal = (Angle from TempPoint to TempPoint2)
    • Unit - Create 1 Dummy for (Owner of TempUnit) at TempPoint facing TempReal degrees
    • Unit - Set the custom value of (Last created unit) to 0
    • Unit - Add Shockwave (Neutral Hostile) to (Last created unit)
    • Unit - Set level of Shockwave (Neutral Hostile) for (Last created unit) to (Level of Shockwave for TempUnit)
    • Unit Group - Add (Last created unit) to FrostWave
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Number of units in FrostWave) Equal to 0
      • Then - Actions
        • Trigger - Turn on Frost Nova Line System <gen>
      • Else - Actions

• Frost Nova Line System
  • Events
    • Time - Every 0.50 seconds of game time
  • Conditions
  • Actions
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Number of units in FrostWave) Not equal to 0
      • Then - Actions
        • Unit Group - Pick every unit in FrostWave and do (Actions)
          • Loop - Actions
            • Set TempUnit = (Picked unit)
            • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
              • If - Conditions
                • (Custom value of (Picked unit)) Less than (350 + (150 x (Level of Shockwave (Neutral Hostile) for (Picked unit))))
              • Then - Actions
                • Set TempPoint = (Position of TempUnit)
                • Set TempPoint2 = (TempPoint offset by 50.00 towards (Facing of TempUnit) degrees)
                • Unit - Set the custom value of TempUnit to ((Custom value of TempUnit) + 50)
                • Unit - Move TempUnit instantly to TempPoint2
                • Special Effect - Create a special effect at TempPoint2 using Abilities\Spells\Undead\FrostNova\FrostNovaTarget.mdl
                • Special Effect - Destroy (Last created special effect)
                • Special Effect - Create a special effect at TempPoint2 using Units\NightElf\Wisp\WispExplode.mdl
                • Special Effect - Destroy (Last created special effect)
                • Set TempGroup = (Units within 350.00 of TempPoint2 matching ((((Matching unit) is alive) Equal to True) and (((Owner of (Matching unit)) is an enemy of (Owner of TempUnit)) Equal to True)))
                • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
                  • If - Conditions
                    • (Number of units in TempGroup) Not equal to 0
                  • Then - Actions
                    • Unit Group - Pick every unit in TempGroup and do (Actions)
                      • Loop - Actions
                        • Unit - Cause TempUnit to damage (Picked unit), dealing (Real(TempInteger)) damage of attack type Spells and damage type Cold
                  • Else - Actions
                • Set TempUnit = No unit
                • Custom script: Custom script: call RemoveLocation(udg_TempPoint)
                • Custom script: Custom script: call RemoveLocation(udg_TempPoint2)
                • Custom script: Custom script: call DestroyGroup(udg_TempGroup)
              • Else - Actions
                • Unit - Remove TempUnit from the game
                • Set TempUnit = No unit
      • Else - Actions
        • Trigger - Turn off (This trigger)

You may have to tamper with the numbers a bit such as 0.5 will be pretty fast fo this spell.

Also I have used shockwave as the base spell. You will need to alsouse the Unit version of the spell is the places I have indicated. (The settings for the Unit Shockwave dont matter as it will never actually be used).

Finaly I hope you know how to construct a dummy unit. If you dont, all you realy need to know is that it must fly, have no model and have the locus ability.