简易天气 - Demo[XP·VX·RGE](Update!) - Project1

#==============================================================================
# ** Weather
#------------------------------------------------------------------------------
# - Version(1.0.06.26).
#==============================================================================
class Weather
#--------------------------------------------------------------------------
MOD = Module.constants.include?('RGE') ? :Frame : :Graphics
#--------------------------------------------------------------------------
attr_reader('max')
attr_accessor('fade')
attr_accessor('speed')
attr_accessor('direction')
#--------------------------------------------------------------------------
[:z, :color, :bitmap, :visible].each do |sym|
ary = :sprites
method = :define_method
eval("#{method}('#{sym}='){|#{sym}|@#{ary}.each{|obj|obj.#{sym}=#{sym}}}")
end
#--------------------------------------------------------------------------
#--------------------------------------------------------------------------
# * Initialize
#--------------------------------------------------------------------------
def initialize(arg = 40)
@max = arg
@speed = 0
@sprites = []
@fade = false
@direction = 0
{:width => 640, :height => 480}.each do |sym, var|
eval("@#{sym}=#{MOD}.methods.include?('#{sym}')?#{MOD}.#{sym} : #{var}")
end
@max.times { @sprites.push(Sprite.new) }
@sprites.each {|sprite| sprite.x = rand(@width) }
@sprites.each {|sprite| sprite.y = -rand(@height) }
end
#--------------------------------------------------------------------------
# * Update
#--------------------------------------------------------------------------
def update
fall
revert
end
#--------------------------------------------------------------------------
# * Dispose
#--------------------------------------------------------------------------
def dispose
@sprites.each {|sprite| sprite.dispose }
end
#--------------------------------------------------------------------------
# * Zoom
#--------------------------------------------------------------------------
def zoom=(zoom)
@sprites.each {|sprite| sprite.zoom_x = sprite.zoom_y = zoom }
end
#--------------------------------------------------------------------------
# * Fall
#--------------------------------------------------------------------------
def fall
@sprites.each {|sprite| sprite.y = sprite.y + rand(@speed) + 1 }
@sprites.each {|sprite| sprite.x = sprite.x + rand(2) * @direction }
return unless @fade
@sprites.each do |sprite|
opacity = @width - 255
sprite.opacity = sprite.y < opacity ? opacity - sprite.y : 0
end
end
#--------------------------------------------------------------------------
# * Revert
#--------------------------------------------------------------------------
def revert
@sprites.each do |sprite|
next if sprite.y < @height and sprite.x.between?(0, @width)
x = rand(@width)
y = -sprite.bitmap.rect.height
sprite.x, sprite.y, sprite.opacity = x, y, 255
end
end
end

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