请问如何让事件在地图上逐渐消失 - Project1

#==============================================================================
# ** TDS 移动路线代码
# Ver: 1.0
#------------------------------------------------------------------------------
# * 介绍
# 本脚本可以使用各种方式简化"移动路线"
#------------------------------------------------------------------------------
# * 功能:
# 移动一段距离. (例如: 向上移动 x 10 次)
# 淡入淡出（不透明度逐渐变化）
# 显示心情气球.
#------------------------------------------------------------------------------
# * 使用方法:
# 以下脚本都可以用在事件指令“移动路线”的“脚本”里
#
# 朝某个方向移动一段距离:
#
# move_times(方向,距离)
#
# 方向：可以替换为 :UP :DOWN :LEFT :RIGHT （分别代表上、下、左、右）
#
# 距离：移动的距离（多少图块/步）
#
# 例子:
#
# move_times(:UP, 5)
# move_times(4, 5)
#
# 以上两条都是一样的，因为上方向的移动代码是4
#
# 不透明度逐渐变为某值:
#
# fade_opacity_to(不透明度, 时间)
#
# 不透明度 = 淡入/淡出到的不透明度
# 时间 = 淡入/淡出的总时间
#
# 例子:
#
# fade_opacity_to(0, 60)
#
# 效果是不透明度在60帧内渐变到0
#
# 显示心情气球:
#
# show_balloon_icon(代码, wait = false)
#
# 代码 = 心情气球的代码. 是心情求的索引，从第一行到最后一行是 1 到 10.
# 你也可以使用气球的名字作为标志
# :Exclamation => 1, :Question => 2, :Music_Note => 3, :Heart => 4, :Anger => 5,
# :Sweat => 6, :Cobweb => 7, :Silence => 8, :Light_Bulb => 9, :Zzz => 10
#
# wait = 等待直至心情气球显示结束
#
# 例子:
#
# show_balloon_icon(1)
# show_balloon_icon(:Exclamation)
#------------------------------------------------------------------------------
# * Notes:
# none.
#------------------------------------------------------------------------------
# 警告: （哦）
#
# Do not release, distribute or change my work without my expressed written
# consent, doing so violates the terms of use of this work.
#
# If you really want to share my work please just post a link to the original
# site.
#
# * Not Knowing English or understanding these terms will not excuse you in any
# way from the consequenses.
#------------------------------------------------------------------------------
# * Import to Global Hash
#==============================================================================
($imported ||= {})[:TDS_Movement_Code] = true
#==============================================================================
# ** Game_Character
#------------------------------------------------------------------------------
# A character class with mainly movement route and other such processing
# added. It is used as a super class of Game_Player, Game_Follower,
# GameVehicle, and Game_Event.
#==============================================================================
class Game_Character < Game_CharacterBase
#--------------------------------------------------------------------------
# * Constants
#--------------------------------------------------------------------------
# Move Commands Symbol Code
MOVE_SYMBOL_CODE = {
:UP => ROUTE_MOVE_UP,
:DOWN => ROUTE_MOVE_DOWN,
:LEFT => ROUTE_MOVE_LEFT,
:RIGHT => ROUTE_MOVE_RIGHT,
:FORWARD => ROUTE_MOVE_FORWARD,
:BACKWARD => ROUTE_MOVE_BACKWARD,
}
# Balloon Symbol ID
BALLOON_SYMBOL_ID = {
:Exclamation => 1, :Question => 2, :Music_Note => 3, :Heart => 4, :Anger => 5,
:Sweat => 6, :Cobweb => 7, :Silence => 8, :Light_Bulb => 9, :Zzz => 10
}
#--------------------------------------------------------------------------
# * Fade Opacity to Value
# opacity : target opacity value
# duration : fade duration
#--------------------------------------------------------------------------
def fade_opacity_to(opacity, duration)
# Get Step Opacity
step = (opacity - @opacity).to_f / duration
# Get Change Opacity
c_opacity = @opacity
duration.times {|i|
# Add Opacity Change Move Command
@move_route.list.insert(@move_route_index + i + 1, RPG::MoveCommand.new(ROUTE_CHANGE_OPACITY, [c_opacity]))
# Set Change Opacity
c_opacity += step
}
end
#--------------------------------------------------------------------------
# * Show Balloon Icon
# code : balloon id (Index or Symbol)
# wait : wait until balloon is done displaying flag
#--------------------------------------------------------------------------
def show_balloon_icon(code, wait = false)
# Convert Code From Symbol to Integer if applicable
code = BALLOON_SYMBOL_ID[code] if code.is_a?(Symbol)
# Set Balloon ID
@balloon_id = code
# Set Wait Count if Wait flag is true
@wait_count = 8 * 8 + 12 if wait
end
#--------------------------------------------------------------------------
# * Move by Times
# code : move code
# times : times to move using code
#--------------------------------------------------------------------------
def move_times(code, times)
# Convert Code From Symbol to Integer if applicable
code = MOVE_SYMBOL_CODE[code] if code.is_a?(Symbol)
# Add Move Route Code
times.times {|i| @move_route.list.insert(@move_route_index + i + 1, RPG::MoveCommand.new(code))}
end
end

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