三个问题求指教！ - Project1

#==============================================================================
# ★ ExBattle_Background
#------------------------------------------------------------------------------
# 　使战斗画面能设定任意背景的脚本素材。
#==============================================================================
# 地图设定。
# 请按照地图 ID、图片名的顺序填写。
EXBTL_BACKGR_MAP = {
1 => "bg_001.jpg",
2 => "山崖",
5 => "冰洞窟",
6 => "冰洞窟",
7 => "冰洞窟",
9 => "神殿",
16 => "冰洞窟",
}
# 区域设定。
# 请按照区域 ID、图片名的顺序填写。
EXBTL_BACKGR_AREA = {
1 => "Sunset",
2 => "CloudySky",
}
# 显示位置。
# 指定图片的显示位置 (0:上 1:中 2:下) 。
EXBTL_BACKGR_POSITION = 1
# 设定战斗地面
# 设定战斗地面是否显示。
# (0:不显示 1:显示)
EXBTL_BACKGR_FLOOR = 0
# 设定文件目录。
# 指定战斗背景图片文件位置 (Graphic/xxx/) 。
# 0:System 1:Parallaxes 2:Pictures
EXBTL_BACKGR_FOLDER = 1
#------------------------------------------------------------------------------
class Spriteset_Battle
alias _exbbackgr_create_battleback create_battleback
alias _exbbackgr_create_battlefloor create_battlefloor
#--------------------------------------------------------------------------
# ○ 建立战斗背景精灵 (附加定义)
#--------------------------------------------------------------------------
def create_battleback
fixed = false
for area in $data_areas.values
if $game_player.in_area?(area) and EXBTL_BACKGR_AREA.has_key?(area.id)
source = EXBTL_BACKGR_AREA[area.id]
fixed = true
end
end
unless fixed
if EXBTL_BACKGR_MAP.has_key?($game_map.map_id)
source = EXBTL_BACKGR_MAP[$game_map.map_id]
fixed = true
end
end
if fixed
case EXBTL_BACKGR_FOLDER
when 0
bitmap = Cache.system(source)
when 1
bitmap = Cache.parallax(source)
when 2
bitmap = Cache.picture(source)
end
@battleback_sprite = Sprite.new(@viewport1)
@battleback_sprite.bitmap = bitmap
@battleback_sprite.x = (544 - bitmap.width) / 2
case EXBTL_BACKGR_POSITION
when 0
@battleback_sprite.y = 0
when 1
@battleback_sprite.y = (416 - bitmap.height) / 2
when 2
@battleback_sprite.y = 416 - bitmap.height
end
else
_exbbackgr_create_battleback
end
end
#--------------------------------------------------------------------------
# ○ 建立战斗背景精灵 (附加定义)
#--------------------------------------------------------------------------
def create_battlefloor
_exbbackgr_create_battlefloor
@battlefloor_sprite.opacity = 0 if EXBTL_BACKGR_FLOOR == 0
end
end

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s1 = Vocab::new_game
s2 = Vocab::continue
s3 = Vocab::shutdown
@command_window = Window_Command.new(172, [s1, s2, s3])

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s4 = "另一选项"

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@command_window = Window_Command.new(172, [s1, s2, s3, s4])

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if Input.trigger?(Input::C)
case @command_window.index
when 0 # 新的劇情
command_new_game
when 1 # 繼續遊戲
command_continue
when 2 # 退出遊戲
command_shutdown
end
end

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case @command_window.index
when 0 # 新的劇情
command_new_game
when 1 # 繼續遊戲
command_continue
when 2 # 退出遊戲
command_shutdown
when 3 # 比如这是开始游戏(when3就是选项4)
command_new_game
end

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@command_window.x = (544 - @command_window.width) / 2
@command_window.y = 288

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@help_window = Window_Help.new

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@help_window.update
case @help_window.index
when 0
@help_window.set_text("开始游戏")
when 1
@help_window.set_text("读取")
when 2
@help_window.set_text("离开")
when 3
@help_window.set_text("第四选项说明")
end

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