フェードアウトの簡易テンプレート

[State -1, VarSet]
type = VarSet
trigger1 = Time = 0
var(0) = 256

[State -1, VarSet]
type = VarSet
trigger1 = Time = 0
var(1) = 0

[State -1, Trans]
type = Trans
trigger1 = 1
trans = AddAlpha
alpha = var(0),var(1)

[State -1, VarAdd]
type = VarAdd
trigger1 = Time >= 34
var(0) = -16

[State -1, VarAdd]
type = VarAdd
trigger1 = Time >= 34
var(1) = 16

16ずつ、ないしは8ずつ増減させていくのが一番合理的なのではないかと思う所存。