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# ■ Scene_Base [RMXP]
# ■ Author: Bigace360
# ■ Date: Feb 20, 2012
# ■ Version: 1.1
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#   This script was designed to act as a parent class for all scenes. It
#   provides 2 major purposes :
#
#    1) Give the Main Processing Method a Common Structure
#    2) Automatically Update & Dispose All Spritesets, Sprites, Windows or
#       any other instance variable that responds to :update or :dispose
#
#   This is a script for developers, not non-scripters. If you do not
#   plan to create scenes in RMXP, this isn't needed.
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class Scene_Base
	#--------------------------------------------------------------------------
	# * Main Processing
	#--------------------------------------------------------------------------
	def main
		start                                  # Start processing
		post_start                             # Post-start processing
		loop {main_loop; break if main_break?} # Scene Loop
		move_windows                           # Move windows process
		terminate                              # Termination processing
		Graphics.update                        # Update game screen
	end
	#--------------------------------------------------------------------------
	# * Start processing
	#--------------------------------------------------------------------------
	def start
		create_main_viewport	
	end
	#--------------------------------------------------------------------------
	# * Post-Start Processing
	#--------------------------------------------------------------------------
	def post_start
		perform_transition
		Input.update
	end	
	#--------------------------------------------------------------------------
	# * Execute Transition
	#--------------------------------------------------------------------------
	def perform_transition
		Graphics.transition(transition_speed)
	end	
	#--------------------------------------------------------------------------
	# * Get Transition Speed
	#--------------------------------------------------------------------------
	def transition_speed
		return 10
	end	
	#--------------------------------------------------------------------------
	# * Main Processing : Loop
	#--------------------------------------------------------------------------
	def main_loop
		Graphics.update
		Input.update
		update_all_windows
		update
	end
	#--------------------------------------------------------------------------
	# * Frame Update
	#--------------------------------------------------------------------------	
	def update; end
	#--------------------------------------------------------------------------
	# * Main Processing : Break Loop Test
	#--------------------------------------------------------------------------
	def main_break?
		return $scene != self
	end
	#--------------------------------------------------------------------------
	# * Move windows process
	#--------------------------------------------------------------------------		
	def move_windows; end
	#--------------------------------------------------------------------------
	# * Termination Processing
	#--------------------------------------------------------------------------
	def terminate
		Graphics.freeze
		dispose_all_windows
		dispose_menu_layout
		dispose_main_viewport
	end
	#--------------------------------------------------------------------------
	# * Create Graphic Layout for Menu Screen
	#--------------------------------------------------------------------------
	def create_menu_layout
		@menulay = Sprite.new
		@menulay.bitmap = Bitmap.new(1, 1)
		@menulay.z = 100
		update_menu_layout
	end
	#--------------------------------------------------------------------------
	# * Dispose Graphic Layout for Menu Screen
	#--------------------------------------------------------------------------	
	def dispose_menu_layout
		@menulay.dispose
	end
	#--------------------------------------------------------------------------
	# * Update Graphic Layout for Menu Screen
	#--------------------------------------------------------------------------		
	def update_menu_layout; end
	#--------------------------------------------------------------------------
	# * Create Viewport
	#--------------------------------------------------------------------------
	def create_main_viewport
		@viewport = Viewport.new(0, 0, 640, 480)
		@viewport.z = 200
	end
	#--------------------------------------------------------------------------
	# * Free Viewport
	#--------------------------------------------------------------------------
	def dispose_main_viewport
		@viewport.dispose
	end
	#--------------------------------------------------------------------------
	# * Update All Windows
	#--------------------------------------------------------------------------
	def update_all_windows
		instance_variables.each do |varname|
			ivar = instance_variable_get(varname)
			ivar.update if ivar.is_a?(Window)
		end
	end
	#--------------------------------------------------------------------------
	# * Destroy All Windows
	#--------------------------------------------------------------------------
	def dispose_all_windows
		instance_variables.each do |varname|
			ivar = instance_variable_get(varname)
			ivar.dispose if ivar.is_a?(Window)
		end
	end
	#--------------------------------------------------------------------------
	# * Fade Out All Sounds
	#--------------------------------------------------------------------------
	def fadeout_all(time = 1000)
		$game_system.se_play($data_system.decision_se)
		Audio.bgm_fade(time)
		Audio.bgs_fade(time)
		Audio.me_fade(time)
	end	
end