[Spell] Area around Casting Unit

[Ayrayen]

Here's a little idea of what I want to do, it's rather simple but it will help me understand things.

When the Hero casts Windwalk, 6 positions around the hero (or more if possible) will be marked for a few seconds.
Then, the marked areas will change into some sort of an explosion which will hurt enemies in that area.

My main problem is.
How do I find out the value of a circle around the position of the Hero casting a spell?
Since I need the positions, I also need to calculate the area.
But i'm very unsure of how this will work out.

Thanks in advance.

 

[Lender]

1.save x/y coordinate of unit position
2. determine the effect's coords by this formula
effect's coords are x2,y2
the distence between unit and the effects (the radius) is r
the angle toward the effect is deg

x2 = x+cos(deg)*r
y2 = y+sin(deg)*r

determine the effects locasions like this then group units around these points within a range what u prefer when they explode

 

[LordDz]

Haven't tried it yet, but it should be something like this:

Trigger 1: Marking 6 places

• Events
  • Unit - A unit Starts the effect of an ability
• Conditions
  • (Ability being cast) Equal to Big Boss - Big Slam
• Actions
  • Set tempPoint1 = (Position of (Triggering unit))
  • Set tempInt2 = 6
  • For each (Integer tempInt) from 1 to tempInt2, do (Actions)
    • Loop - Actions
      • Set tempReal = (60.00 x (Real(tempInt)))
      • Set tempPoint2 = (tempPoint1 offset by 256.00 towards tempReal degrees)
      • Unit - Create 1 Circle of Power for (Owner of (Triggering unit)) at tempPoint2 facing Default building facing degrees
      • Unit - Add a 4.00 second Water Elemental expiration timer to (Last created unit)
      • Custom script: call RemoveLocation(udg_tempPoint2)
  • Custom script: call RemoveLocation(udg_tempPoint1)

Trigger 2: Explosions!

• Events
  • Unit - A unit Dies
• Conditions
  • (Unit-type of (Triggering unit)) Equal to Circle of Power
• Actions
  • Set tempPoint1 = (Position of (Triggering unit))
  • Special Effect - Create a special effect at tempPoint1 using Explosions\ExplosionBIG.mdl
  • Special Effect - Destroy (Last created special effect)
  • Custom script: call RemoveLocation(udg_tempPoint1)

Just give the Circle of Power (or your dummy unit that you want) the Goblin Mine - Damage Upon Death ability.
After 4 seconds, all enemy units near the circles take a big whooping damage.

 

[Ayrayen]

So this is how it looks like in-game.
I tried to change the number on the "TMInteger 2" from 6 to 8.
That 'caused a bit lag. But other than that it works as I want it too.

I think it's easier to learn when you have it right in front of oneself.

As for now, thanks!

Also, you chose the "Water elemental" as an expiration timer. Does it matter which one I chose for any specific purposes?

 

[LordDz]

Well it uses the "Water Elemental" buff, which have no effects. That's why I pick it.

 

[Lender]

I tried to change the number on the "TMInteger 2" from 6 to 8.

change this line as well

• Set tempReal = (60.00 x (Real(tempInt)))

to

• Set tempReal = (45.00 x (Real(tempInt)))

 

[Vinz]

Generic also has no effects, like Water Elemental.

Also, store anything you use twice or more into a variable to avoid unnecessary function calls (Triggering Unit, Owner of Triggering Unit especially as it's in a loop); variables are slower than functions.