Addon - Realistic Shadow

#==============================================================================
# TSBS Addon - Realistic Shadow++
# Version : 1.x (edited)
# Language : English
# Requires : Theolized Sideview Battle System
#++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# Contact :
#------------------------------------------------------------------------------
# *> http://www.rpgmakerid.com
# *> http://www.rpgmakervxace.net
# *> http://theolized.blogspot.com
#==============================================================================
($imported ||= {})[:TSBS_RealShadow] = true
#==============================================================================
# Change Logs:
# -----------------------------------------------------------------------------
# 2013.08.21 - Finished script
# 2021.03.21 - flip fix & start fix
# 2021.05.12 - And offset translation and rotation command
#==============================================================================
=begin

  ===================
  || Introduction ||
  -------------------
  This TSBS addon will make the shadow more realistic. It projects the sprite
  and draw it as a shadow. Best used in sideview style (not isometric looks
  battle system) and custom spriteset. Because it won't show icon shadow if you
  plan to use show weapon icon

  =================
  || How to use ||
  -----------------
  This script is plug and play. Just put this below the TSBS implementation

  ===================
  || Terms of use ||
  -------------------
  Credit me, TheoAllen. You are free to edit this script by your own. As long
  as you don't claim it yours. For commercial purpose, don't forget to give me
  a free copy of the game.

=end
#==============================================================================
# Configurations
#==============================================================================
module TSBS
  module RShadow

    Opacity = 128 # Shadow opacity. The lesser, the more transparent it will be
    Scale   = 0.5 # Shadow scale from the original source

  end
end
#==============================================================================
# End of configuration. Do not edit anything pass this line!
#==============================================================================
if $imported[:TSBS] >= '1.4.0'
#==============================================================================
# ** Sprite_BattlerShadow
#------------------------------------------------------------------------------
#  This sprite is used to display battler's shadow.
#==============================================================================
class Sprite_BattlerShadow < Sprite
  # --------------------------------------------------------------------------
  # * Initialize
  # --------------------------------------------------------------------------
  def initialize(sprite_battler, viewport = nil)
    @sprite_battler = sprite_battler
    super(viewport)
    update_reference
    self.mirror = enemy_start?
    self.angle = 180
    self.color.set(Color.new(0,0,0))
    if @sprite_battler.battler.class == Game_Enemy
      @sprite_battler.battler.init_shadow_start
    end
    update
  end

  def enemy_start?
    return @sprite_battler.battler.nil?
  end

  def update_shadow
  end
  # --------------------------------------------------------------------------
  # * Update Reference
  # --------------------------------------------------------------------------
  def update_reference
    self.bitmap = @sprite_battler.bitmap
    src_rect.set(@sprite_battler.src_rect)
  end
  # --------------------------------------------------------------------------
  # * Update Size
  # --------------------------------------------------------------------------
  def update_size
    self.zoom_y = TSBS::RShadow::Scale * ($imported[:TSBS_Camera] ?
      $tsbs_camera.zoom : 1.0)
    self.zoom_x = ($imported[:TSBS_Camera] ? $tsbs_camera.zoom : 1.0)
    self.ox = width/2
    self.oy = height
  end

  def update_position
    if @sprite_battler.battler
      self.x = @sprite_battler.battler.shadow_x
      self.y = @sprite_battler.battler.shadow_y + shift_y
      self.angle = 180 + @sprite_battler.battler.srotate
    end
    self.z = @sprite_battler.z #FlipEdit
  end

  # --------------------------------------------------------------------------
  # * Update opacity
  # --------------------------------------------------------------------------
  def update_opacity
    self.opacity = TSBS::RShadow::Opacity * (@sprite_battler.opacity/255.0)
  end
  # --------------------------------------------------------------------------
  # * Update
  # --------------------------------------------------------------------------
  def update
    super
    update_size
    update_position
    update_opacity
    update_visible
    update_reference
  end
  # --------------------------------------------------------------------------
  # * Update
  # --------------------------------------------------------------------------
  def shift_y
    return -data_battler.shadow_y * ($imported[:TSBS_Camera] ?
      $tsbs_camera.zoom : 1.0)
  end
end

class Game_Enemy
  def init_shadow_start
    @shadow_point.x = x
    @shadow_point.y = y
  end
end
end

class Game_Battler
  attr_reader :srotate

  alias clear_tsbs_shadow clear_tsbs
  def clear_tsbs
    @sox = 0
    @soy = 0
    @srotate = 0
    clear_tsbs_shadow
  end

  alias sxpos shadow_x
  def shadow_x
    return sxpos + @sox
  end

  alias sypos shadow_y
  def shadow_y
    return sypos + @soy
  end

  alias shadowoffset_custom custom_sequence_handler
  def custom_sequence_handler
    if @acts[0] == :shadow_transform
      @sox = @acts[1] || @sox
      @soy = @acts[2] || @soy
      @srotate = @acts[3] || @srotate
    else
      shadowoffset_custom
    end
  end

end