Ok high people, I have a bit of a complicated idea I want to put to the test here. Well, complicated for me.

I have a hero unit fighting three other units (each one a human player) and I want it to use a ability called Flaming Boulder

This ability will send an observer with exploding wraiths on it flying towards a randomly choosen player. But I don't want it to trail the player like some heat seeking missle. Rather just shoot towards the place the player was at the time of the trigger initialisation.

Thank you in advance,
Oh_Man[TFE]

Just do Center location (On the player) not preserve and then do your trigger create observer at pl-1 send it to the location... now the location is on the play but it wont always been on it!! Its pretty simple!

You will randomize the player using death counts, just constantly have a death count counting to 4, when it reaches 4, set it back to 1, and then it is always either a number 1-3.

Now, depending on which death count is currently up when they use the spell, you center a location on a player, then you set the current death count somewhere else(in another death count) then you constantly center the location on whichever enemy was selected and order the observer to move to the location, then you just center a location on the observer, and create a unit and kill it for explosions

Player:Current
Condition:
<condition for firing the flaming boulder>
<random condition met (or else it will always center on the upper left most person -- Add Falkoner's triggers )>
Action:
MoveLocation - Center Location X on Unit for Player (Decided by the random condition)
Create 1 observer
Preserve Trigger

Now the second trigger

Player: current
Condition: Current player has an observer (Or the Flaming boulder condition is met)
Actions:
Order Observer at Anywhere (Or cover the area where the game is Location) Move to Location X
Preserve Trigger

Done.. the location won't move.. Unless you fire another observer
So you would add the Condition for the first trigger
"Current player commands exactly 0 observer"

so the person can't fire 2 observers at a time..

Thank you for your assistance!

Wraiths suck. Use spider mines. Not only will it be directly under the obs, but it won't be displaced if you move it to the wrong spot, and it will successfully go around unwalkable areas. If it does go over some area like that, imagine it "jumps" past, and doesn't explode, since it's in the air.

i tried that it didnt wrk i got that annoying "unable to put unit here error".

Maybe your talking about something else? I'm creating and killing spider mines underneath the observe to create a 'flaming' affect. That's why I was going to use dying wraiths cause they do not get this above mentioned error.

You need to move it there, rather than create it. Create them in some other area first, then move them.

Hey people I'm kinda having trouble with the whole 'preserve trigger' idea I don't think I know how it works lol.

If I put a preserve trigger in my trigger? Does it mean that trigger will continually loop while the condition is met? If the condition is no longer being fulfiled does the trigger stop until next time it is met again?

if you have a trigger layout like this

Condition
Always

Action
blah
blah
preserve trigger
bloo

Do the blahs preserve but the bloo only fire once?

ALSO... I have actually been refining my Boulder Throw idea. I want it to go flying from the boss towards the player (at the time of trigger intiilsation) and then I want it to keep going. Like if the unit stands there the boulder hits him splat but if he stands aside it just keeps flying off the screen and eventually disappear.

How would I go about that??

Thanks :S
Oh_Man

No, preserve trigger anywhere will make the entire trigger continually loop as long as the condition is met.

As for keeping it going, you will need some sort of directional system. It's kind of advanced, so you probably won't want to do it. It essentially detects which direction you are going, so you can then order the unit to the same direction. I know tux made a gunner system in preparation for rush 2, which works pretty well.

You may find it useful to use Switches here. Simply Set the Switch in one trigger based on the conditions and use an action to remove one or multiples of the conditions. Use the next trigger based on the trigger Set to make the action and Clear the Switch.

Trigger 1
Conditions -
Current Player Commands 1 Scout(Using Spell-cast system).

Actions -
Remove Scout Owned by Current Player
Set Switch Y(Activate Boulder)
Preserve Trigger
Comment: Cast Boulder(Trigger 1)


Trigger 2
Conditions -
Switch Y is Set

Actions -
Move Observer(Boulder) to Location, "Start Boulder Here"(Player Y).
Command Observer(Boulder)to Location, "Target Here"(Player X).
Clear Switch Y
Preserve Trigger
Comment: Cast Boulder(Trigger 2)

You're final trigger should be creating or moving wraiths to the observer's location and having them destroyed upon entering a location centered upon the observer. Make sure the observer is owned by the player casting so that you can center the location correctly and add a condition that prevents the first trigger from starting if the player owns an observer.

Conditions -
Player Commands Exactly 0 Boulder(Observer)

All triggers should be able to have Preserve Trigger enabled.

DCs work better than switches.

Not only some Wraiths, a ton of them.