TriggerErrorin: Negative array indexes not supported

#1 Feb 3, 2011

_ForgeUser4812856

Join Date: 8/6/2010
Posts: 56
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Hi guys. I have a hero who shoots out a fireball. That fireball flies until it hits a unit, upon doing so, either hitting the target or an innocent bystander, deals "fake damage" then a trigger gets notified of that "fake damage" and dishes out "real damage" to that unit and all units around to resemble being hit by a ball of fire. The reason I did this is to be able to level up the skill for the hero.

My issue is that occasionally the game will spit out:

TriggerErrorin
'gt_ConjureFireballDamage_Func':
Negative array indexes not supported

I have the game say "fireball lev 1" just so i know that the trigger ran for that shot, but when this error pops up no damage or text is given.

Here is the code for my trigger that it's returning

Conjure Fireball Damage
    Events
        Unit - Any Unit takes Fatal or Non-Fatal Spell damage (from Ethereal -  Conjure Fireball (Level 1) (FakeDamage) effects)
    Local Variables
    Conditions
        (Triggering damage amount) == 0.0
    Actions
        General - If (Conditions) then do (Actions) else do (Actions)
            If
                Level of Conjure Fireball[(Player (Owner of (Damaging unit)) from Human Players)] == 1
            Then
                UI - Display "Fireball is Level 01" for (All players) to Subtitle area
                Environment - Deal damage using Ethereal -  Conjure Fireball (Level 1) (2 RealDamage) on (Triggering unit) from (Damaging unit) with 0.0 extra damage
                Unit Group - Pick each unit in (Any units in (Region((Position of (Triggering unit)), 1.2)) owned by player 13 matching Excluded: Missile, Dead, Hidden, with at most Any Amount) and do (Actions)
                    Actions
                        Environment - Deal damage using Ethereal -  Conjure Fireball (Level 1) (2 RealDamage) on (Picked unit) from (Damaging unit) with 0.0 extra damage
                General - Wait 2.0 Game Time seconds
                UI - Display "  " for (All players) to Subtitle area
            Else
        General - If (Conditions) then do (Actions) else do (Actions)
            If
                Level of Conjure Fireball[(Player (Owner of (Damaging unit)) from Human Players)] == 2
            Then
                UI - Display "Fireball is Level 02" for (All players) to Subtitle area
                Environment - Deal damage using Ethereal -  Conjure Fireball (Level 1) (5 RealDamage) on (Triggering unit) from (Damaging unit) with 0.0 extra damage
                Unit Group - Pick each unit in (Any units in (Region((Position of (Triggering unit)), 1.2)) owned by player 13 matching Excluded: Missile, Dead, Hidden, with at most Any Amount) and do (Actions)
                    Actions
                        Environment - Deal damage using Ethereal -  Conjure Fireball (Level 1) (5 RealDamage) on (Picked unit) from (Damaging unit) with 0.0 extra damage
                General - Wait 2.0 Game Time seconds
                UI - Display "  " for (All players) to Subtitle area
            Else

Any ideas? I can post the Fireball ability code if needed as well.

As always, thanks for the assistance.

#2 Feb 3, 2011
_ForgeUser4812856
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Edit: I've been messing around with the trigger.

I changed:
Level of Conjure Fireball[(Player (Owner of (Damaging unit)) from Human Players)] == 1

To:
Level of Conjure Fireball[(Player (Owner of (Damaging unit)) from All Players)] == 1

And I no longer get the "Negative array indexes not supported" Error. Instead I now get:

TriggerErrorin
'gt_ConjureFireballDamage_Func':
Trying to access an element past the end of an array

Any ideas?

(Human players was a player group that was created with all active human players at the start of the map, I had a testing mode trigger that added player 1 to Human players at map initiation)

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#3 Feb 3, 2011
_ForgeUser1765000
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can't you just do (Owner of Unit)? you don't need to use the Player from player group function

Level of Conjure Fireball[(Owner of (Damaging unit)] == 1

Last edited by _ForgeUser1765000: Feb 3, 2011

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#4 Feb 3, 2011

_ForgeUser4812856

Join Date: 8/6/2010
Posts: 56
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Thanks for the reply LinkD

I tried your method (smart by the way, i don't know why i went around in a circle like that to get the player number)

However im still getting an error.
Now it says:

TriggerErrorin
'gt_ConjureFireballDamage_Func':
Trying to access an element past the end of an array

Here's my code edited, notice I added a line in the "else" to say that fireball is neither level 1 or level 2, Not level 1, or not level 2. The game occasionally returned a message saying "Fireball is not level 2" and that's when it does no damage (it gives the trigger error code at random times). I'm pretty much really lost on this one.

Conjure Fireball Damage
    Events
        Unit - Any Unit takes Fatal or Non-Fatal Spell damage (from Ethereal -  Conjure Fireball (Level 1) (FakeDamage) effects)
    Local Variables
    Conditions
        (Triggering damage amount) == 0.0
    Actions
        General - If (Conditions) then do (Actions) else do (Actions)
            If
                Or
                    Conditions
                        Level of Conjure Fireball[(Owner of (Triggering unit))] == 1
                        Level of Conjure Fireball[(Owner of (Triggering unit))] == 2
            Then
                General - If (Conditions) then do (Actions) else do (Actions)
                    If
                        Level of Conjure Fireball[(Owner of (Triggering unit))] == 1
                    Then
                        UI - Display "Fireball is Level 01" for (All players) to Subtitle area
                        Environment - Deal damage using Ethereal -  Conjure Fireball (Level 1) (2 RealDamage) on (Triggering unit) from (Damaging unit) with 0.0 extra damage
                        Unit Group - Pick each unit in (Any units in (Region((Position of (Triggering unit)), 1.2)) owned by player 13 matching Excluded: Missile, Dead, Hidden, with at most Any Amount) and do (Actions)
                            Actions
                                Environment - Deal damage using Ethereal -  Conjure Fireball (Level 1) (2 RealDamage) on (Picked unit) from (Damaging unit) with 0.0 extra damage
                        General - Wait 2.0 Game Time seconds
                        UI - Display "  " for (All players) to Subtitle area
                    Else
                        UI - Display "FIREBALL IS <c " for (All players) to Subtitle area
                General - If (Conditions) then do (Actions) else do (Actions)
                    If
                        Level of Conjure Fireball[(Owner of (Triggering unit))] == 2
                    Then
                        UI - Display "Fireball is Level 02" for (All players) to Subtitle area
                        Environment - Deal damage using Ethereal -  Conjure Fireball (Level 1) (5 RealDamage) on (Triggering unit) from (Damaging unit) with 0.0 extra damage
                        Unit Group - Pick each unit in (Any units in (Region((Position of (Triggering unit)), 1.2)) owned by player 13 matching Excluded: Missile, Dead, Hidden, with at most Any Amount) and do (Actions)
                            Actions
                                Environment - Deal damage using Ethereal -  Conjure Fireball (Level 1) (5 RealDamage) on (Picked unit) from (Damaging unit) with 0.0 extra damage
                        General - Wait 2.0 Game Time seconds
                        UI - Display "  " for (All players) to Subtitle area
                    Else
                        UI - Display "FIREBALL IS <c " for (All players) to Subtitle area
            Else
                UI - Display "FIREBALL IS <c " for (All players) to Subtitle area

Also another thing to note: The integer "Level of Fireball" is an integer array of 13, and its default is set to 1

Thanks

-ViG

Last edited by _ForgeUser4812856: Feb 3, 2011

#5 Feb 3, 2011
_ForgeUser1765000
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i noticed you changed it to Triggering Unit instead of Damaging Unit, was this on purpose? because if your using this ability on player 15, owner of Triggering Unit will return 15, and since the max of the array is 13 that will give an array overflow error

Last edited by _ForgeUser1765000: Feb 3, 2011

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#6 Feb 3, 2011

_ForgeUser4812856

Join Date: 8/6/2010
Posts: 56
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@LinkD: Go

LinkD!! Good catch, geez', I'm glad i re-posted the trigger, there needs to be a point system of something here, good eye man!

As far as changing the trigger goes, just tried it with "damaging unit" and I get the same trigger error

TriggerErrorin
'gt_ConjureFireballDamage_Func':
Trying to access an element past the end of an array

Here's the new code

Conjure Fireball Damage
    Events
        Unit - Any Unit takes Fatal or Non-Fatal Spell damage (from Ethereal -  Conjure Fireball (Level 1) (FakeDamage) effects)
    Local Variables
    Conditions
        (Triggering damage amount) == 0.0
    Actions
        General - If (Conditions) then do (Actions) else do (Actions)
            If
                Or
                    Conditions
                        Level of Conjure Fireball[(Owner of (Damaging unit))] == 1
                        Level of Conjure Fireball[(Owner of (Damaging unit))] == 2
            Then
                General - If (Conditions) then do (Actions) else do (Actions)
                    If
                        Level of Conjure Fireball[(Owner of (Damaging unit))] == 1
                    Then
                        UI - Display "Fireball is Level 01" for (All players) to Subtitle area
                        Environment - Deal damage using Ethereal -  Conjure Fireball (Level 1) (2 RealDamage) on (Triggering unit) from (Damaging unit) with 0.0 extra damage
                        Unit Group - Pick each unit in (Any units in (Region((Position of (Triggering unit)), 1.2)) owned by player 13 matching Excluded: Missile, Dead, Hidden, with at most Any Amount) and do (Actions)
                            Actions
                                Environment - Deal damage using Ethereal -  Conjure Fireball (Level 1) (2 RealDamage) on (Picked unit) from (Damaging unit) with 0.0 extra damage
                        General - Wait 2.0 Game Time seconds
                        UI - Display "  " for (All players) to Subtitle area
                    Else
                        UI - Display "FIREBALL IS <c " for (All players) to Subtitle area
                General - If (Conditions) then do (Actions) else do (Actions)
                    If
                        Level of Conjure Fireball[(Owner of (Damaging unit))] == 2
                    Then
                        UI - Display "Fireball is Level 02" for (All players) to Subtitle area
                        Environment - Deal damage using Ethereal -  Conjure Fireball (Level 1) (5 RealDamage) on (Triggering unit) from (Damaging unit) with 0.0 extra damage
                        Unit Group - Pick each unit in (Any units in (Region((Position of (Triggering unit)), 1.2)) owned by player 13 matching Excluded: Missile, Dead, Hidden, with at most Any Amount) and do (Actions)
                            Actions
                                Environment - Deal damage using Ethereal -  Conjure Fireball (Level 1) (5 RealDamage) on (Picked unit) from (Damaging unit) with 0.0 extra damage
                        General - Wait 2.0 Game Time seconds
                        UI - Display "  " for (All players) to Subtitle area
                    Else
                        UI - Display "FIREBALL IS <c " for (All players) to Subtitle area
            Else
                UI - Display "FIREBALL IS <c " for (All players) to Subtitle area

I have a question, when the error pops up or when the shot doesn't give me a "fireball is level one" nothing actually happens. I mean, shouldn't my trigger cause the game to always say one of the following: "Fireball is level 1" "Fireball is not level 1" "Fireball is level 2" "Fireball is not level 2" "Fireball is neither level 1 or level 2" I mean I added those actions into the "else" categories yet i occasionally get a blank attack that does 0 damage and no chat message.

Thanks for the continuing help,

#7 Feb 3, 2011
_ForgeUser1765000
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hm, i can't really see the issue now honestly, and about the error, when the error you got occurs, it completely stops the trigger so it doesn't get to do any more actions so it won't run the text message. (the trigger can still run again though)

and since the first action is the text message, that would mean the condition is still the source of the error, i just don't see the error

Last edited by _ForgeUser1765000: Feb 3, 2011

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#8 Feb 4, 2011
Forge_User_03903326
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@ViG01: Go

have you tried outputing the owner of damaging unit value to the screen?
then you can see which index it is trying to reach.

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