Adding attack animations

[Gregoyle]

Alright so I wanted to add some of my own animations for some moves but before I just go screwing with everything I have a couple questions.

Questions done with Ember.

I get that this calls on the attack animation to begin sending the fireball out from X Pokemon.

Spoiler

function ATTACKS_FIRE_EMBER_ATTACKING_ANIMATION()
AnimationSequenceBegin()
AttacksSpawnMovingAnimation(0.0,0.0,0.0,"Textures\\Battle\\Fire\\EmberBall", 0.2, 0.2, 0.2, 4.0, 0.0, 0.0, 0.036, false, true, 0.0, 0.0)
for i = 0, 12, 1 do

What I don't get is at the end of the 'beginning' animation it has this

Spoiler

AttacksSpawnOpacityAnimation(i * 0.2, 0.0, 0.0, "Textures\\Battle\\Fire\\Fire", 0.2, 0.2, 0.2, 0.01, false, 0.0, i * 0.6, 0.0)
end
AnimationSequenceEnd()

(Ending of the attack(Explosion of fire))
-------------------------------------------------------
Also at the 'end' animation (To Y Pokemon) it has the Ember ball explosion animation twice?

Spoiler

AttacksSpawnOpacityAnimation(i * 0.2, 0.0, 0.0, "Textures\\Battle\\Fire\\Fire", 0.2, 0.2, 0.2, 0.01, false, 0.0, 7.2 - (i * 0.6), 0.0)
end
AttacksSpawnOpacityAnimation(0.1, 0.0, 0.0, "Textures\\Battle\\Fire\\Fire", 1.0, 1.0, 1.0, 0.01, false, 0.0, 7.2, 1.0)
AnimationSequenceEnd()

Does it HAVE TO be inputted twice?

WOW EDIT

Alright wow, I'm retarded.
Those second ones are for the animation following the emberball lol.
How is the size of the following animation decided then? I notice it's smaller than the actual hit explosion.