缩小act

act里填上

[TRIGGER]
    [FRAME]
        0    0
    [WHICH]
    [PLAYER]
    [DO BEHAVIOR]
    [CHECKUP OBJECT]
        0
[/TRIGGER]

[BEHAVIOR]
    [COLOR CHANGE EFFECT]
        [EFFECT BLUE START]
            0
        [EFFECT RED END]
            0
        [EFFECT ALPHA END]
            0
        [CHANGE SIZE START]
            100
        [CHANGE SIZE END]
            50
        [CHANGE TIME]
            500
        [LIFE TIME]
            0
    [/COLOR CHANGE EFFECT]
[/BEHAVIOR]