class Tilemap

class CustomTilemapAutotiles
  attr_accessor :changed
  def initialize
  @changed=true
  @tiles=[nil,nil,nil,nil,nil,nil,nil]
  end
  def []=(i,value)
  @tiles[i]=value
  @changed=true
  end
  def [](i)
  return @tiles[i]
  end
end

#Console::setup_console

class CustomTilemapSprite < Sprite
end

class Tilemap
  Animated_Autotiles_Frames = 15
  Autotiles = [
    [ [27, 28, 33, 34], [ 5, 28, 33, 34], [27,  6, 33, 34], [ 5,  6, 33, 34],
      [27, 28, 33, 12], [ 5, 28, 33, 12], [27,  6, 33, 12], [ 5,  6, 33, 12] ],
    [ [27, 28, 11, 34], [ 5, 28, 11, 34], [27,  6, 11, 34], [ 5,  6, 11, 34],
      [27, 28, 11, 12], [ 5, 28, 11, 12], [27,  6, 11, 12], [ 5,  6, 11, 12] ],
    [ [25, 26, 31, 32], [25,  6, 31, 32], [25, 26, 31, 12], [25,  6, 31, 12],
      [15, 16, 21, 22], [15, 16, 21, 12], [15, 16, 11, 22], [15, 16, 11, 12] ],
    [ [29, 30, 35, 36], [29, 30, 11, 36], [ 5, 30, 35, 36], [ 5, 30, 11, 36],
      [39, 40, 45, 46], [ 5, 40, 45, 46], [39,  6, 45, 46], [ 5,  6, 45, 46] ],
    [ [25, 30, 31, 36], [15, 16, 45, 46], [13, 14, 19, 20], [13, 14, 19, 12],
      [17, 18, 23, 24], [17, 18, 11, 24], [41, 42, 47, 48], [ 5, 42, 47, 48] ],
    [ [37, 38, 43, 44], [37,  6, 43, 44], [13, 18, 19, 24], [13, 14, 43, 44],
      [37, 42, 43, 48], [17, 18, 47, 48], [13, 18, 43, 48], [ 1,  2,  7,  8] ]
  ]
  FlashOpacity=[100,90,80,70,80,90]
  attr_reader :tileset
  attr_reader :autotiles
  attr_reader :map_data
  attr_accessor :flash_data
  attr_accessor :priorities
  attr_reader :visible
  attr_accessor :ox
  attr_accessor :oy
  attr_reader :viewport
  attr_accessor :tone
  attr_accessor :color
  def graphicsHeight
    return @graphicsHeight
  end
  def graphicsWidth
    return @graphicsWidth
  end
  def initialize(viewport)
    @tileset    = nil  # Refers to Map Tileset Name
    @autotiles  = CustomTilemapAutotiles.new
    @map_data  = nil  # Refers to 3D Array Of Tile Settings
    @flash_data = nil  # Refers to 3D Array of Tile Flashdata
    @priorities = nil  # Refers to Tileset Priorities
    @visible    = true # Refers to Tileset Visibleness
    @ox        = 0    # Bitmap Offsets
    @oy        = 0    # bitmap Offsets
    @plane      = false
    @haveGraphicsWH=Graphics.width!=nil rescue false
    if @haveGraphicsWH
    @graphicsWidth=Graphics.width
    @graphicsHeight=Graphics.height
    else
    @graphicsWidth=640
    @graphicsHeight=480
    end
    @tileWidth = Game_Map::TILEWIDTH rescue 32
    @tileHeight = Game_Map::TILEHEIGHT rescue 32
    @tileSrcWidth = 32
    @tileSrcHeight = 32
    @diffsizes=(@tileWidth!=@tileSrcWidth)||(@tileHeight!=@tileSrcHeight)
    @tone=Tone.new(0,0,0,0)
    @color=Color.new(0,0,0,0)
    @oldtone=Tone.new(0,0,0,0)
    @oldcolor=Color.new(0,0,0,0)
    @selfviewport=Viewport.new(0,0,graphicsWidth,graphicsHeight)
    @viewport=viewport ? viewport : @selfviewport
    @tiles=[]
    @autotileInfo=[]
    @regularTileInfo=[]
    @oldOx=0
    @oldOy=0
    @oldViewportOx=0
    @oldViewportOy=0
    @layer0=CustomTilemapSprite.new(viewport)
    @layer0.visible=true
    @nowshown=false
    @layer0.bitmap=Bitmap.new([graphicsWidth+320,1].max,[graphicsHeight+320,1].max)
    @flash=nil
    @layer0.ox=0
    @layer0.oy=0
    @oxLayer0=0
    @oyLayer0=0
    @oxFlash=0
    @oyFlash=0
    @layer0.z=0
    @priotiles=[]
    @priotilesfast=[]
    @prioautotiles=[]
    @autosprites=[]
    @framecount=[0,0,0,0,0,0,0,0]
    @tilesetChanged=true
    @flashChanged=false
    @firsttime=true
    @disposed=false
    @usedsprites=false
    @layer0clip=true
    @firsttimeflash=true
    @fullyrefreshed=false
    @fullyrefreshedautos=false
  end
  def disposed?
  return @disposed
  end
  def flash_data=(value)
  @flash_data=value
  @flashChanged=true
  end
  def update
    if @haveGraphicsWH
    @graphicsWidth=Graphics.width
    @graphicsHeight=Graphics.height
    end
    if @oldtone!=@tone
      @layer0.tone=@tone
      @flash.tone=@tone if @flash
      for sprite in @autosprites
        sprite.tone=@tone if sprite.is_a?(Sprite)
      end
      for sprite in @tiles
        sprite.tone=@tone if sprite.is_a?(Sprite)
      end
      @oldtone=@tone.clone
    end
    if @oldcolor!=@color
      @layer0.color=@color
      @flash.color=@color if @flash
      for sprite in @autosprites
        sprite.color=@color if sprite.is_a?(Sprite)
      end
      for sprite in @tiles
        sprite.color=@color if sprite.is_a?(Sprite)
      end
      @oldcolor=@color.clone
    end
    if @autotiles.changed
      refresh_autotiles
      repaintAutotiles
    end
    if @flashChanged
      refresh_flash
    end
    if @tilesetChanged
      refresh_tileset
    end
    if @flash
    @flash.opacity=FlashOpacity[(Graphics.frame_count/2) % 6]
    end
    mustrefresh=!(@oldOx==@ox && @oldOy==@oy &&
          !@tilesetChanged &&
          !@autotiles.changed)
    if @viewport.ox!=@oldViewportOx ||
        @viewport.oy!=@oldViewportOy
      mustrefresh=true
      @oldViewportOx=@viewport.ox
      @oldViewportOy=@viewport.oy
    end
    if mustrefresh
      refresh
    end
    if (Graphics.frame_count % Animated_Autotiles_Frames == 0) || @nowshown
      repaintAutotiles
      refresh(true)
    end
    @nowshown=false
    @autotiles.changed=false
    @tilesetChanged=false
  end
def priorities=(value)
  @priorities=value
  @tilesetChanged=true
end
def tileset=(value)
  @tileset=value
  @tilesetChanged=true
end
def shown?
  return false if !@visible
  ysize=@map_data.ysize
  xsize=@map_data.xsize
  xStart=(@ox/@tileWidth)-1
  xEnd=((@ox+@viewport.rect.width)/@tileWidth)+1
  yStart=(@oy/@tileHeight)-1
  yEnd=((@oy+@viewport.rect.height)/@tileHeight)+1
  xStart=0 if xStart<0
  xStart=xsize-1 if xStart>=xsize
  xEnd=0 if xEnd<0
  xEnd=xsize-1 if xEnd>=xsize
  yStart=0 if yStart<0
  yStart=ysize-1 if yStart>=ysize
  yEnd=0 if yEnd<0
  yEnd=ysize-1 if yEnd>=ysize
  return (xStart<xEnd && yStart<yEnd)
end
def dispose
 return if disposed?
 @help.dispose if @help
 @help=nil
 i=0;len=@autotileInfo.length;while i<len
  if @autotileInfo[i]
    @autotileInfo[i].dispose
    @autotileInfo[i]=nil
  end
  i+=1
 end
 i=0;len=@regularTileInfo.length;while i<len
  if @regularTileInfo[i]
    @regularTileInfo[i].dispose
    @regularTileInfo[i]=nil
  end
  i+=1
 end
 i=0;len=@tiles.length;while i<len
  @tiles[i].dispose
  @tiles[i]=nil
  i+=2
 end
 i=0;len=@autosprites.length;while i<len
  @autosprites[i].dispose
  @autosprites[i]=nil
  i+=2
 end
 if @layer0
  @layer0.bitmap.dispose if !@layer0.disposed?
  @layer0.bitmap=nil if !@layer0.disposed?
  @layer0.dispose
  @layer0=nil
 end
 if @flash
  @flash.bitmap.dispose if !@flash.disposed?
  @flash.bitmap=nil if !@flash.disposed?
  @flash.dispose
  @flash=nil
 end
 for i in 0...7
  self.autotiles[i]=nil
 end
 @tiles.clear
 @autosprites.clear
 @autotileInfo.clear
 @regularTileInfo.clear
 @tilemap=nil
 @tileset=nil
 @priorities=nil
 @selfviewport.dispose
 @selfviewport=nil
 @disposed=true
end

def bltAutotile(bitmap,x,y,id,frame)
  return if frame<0
  autotile=@autotiles[id/48-1]
  return if !autotile || autotile.disposed?
  if autotile.height==@tileSrcHeight
    anim=frame*@tileSrcWidth
    src_rect=Rect.new(anim,0,@tileSrcWidth,@tileSrcHeight)
    if @diffsizes
      bitmap.stretch_blt(Rect.new(x,y,@tileWidth,@tileHeight),autotile,src_rect)
    else
      bitmap.blt(x,y,autotile,src_rect)
    end
  else
    anim=frame*3*@tileSrcWidth
    id%=48
    tiles = Autotiles[id>>3][id&7]
    src=Rect.new(0,0,0,0)
    halfTileWidth=@tileWidth>>1
    halfTileHeight=@tileHeight>>1
    halfTileSrcWidth=@tileSrcWidth>>1
    halfTileSrcHeight=@tileSrcHeight>>1
    for i in 0...4
      tile_position = tiles[i] - 1
      src.set(
      (tile_position % 6)*halfTileSrcWidth + anim,
      (tile_position / 6)*halfTileSrcHeight, halfTileSrcWidth, halfTileSrcHeight)
      if @diffsizes
      bitmap.stretch_blt(
        Rect.new(i%2*halfTileWidth+x,i/2*halfTileHeight+y,halfTileWidth,halfTileHeight),
        autotile,src)
      else
      bitmap.blt(i%2*halfTileWidth+x,i/2*halfTileHeight+y, autotile, src)
      end
    end
  end
end

def autotileNumFrames(id)
  autotile=@autotiles[id/48-1]
  return 0 if !autotile || autotile.disposed?
  frames=1
  if autotile.height==@tileHeight
  frames=autotile.width/@tileWidth
  else
  frames=autotile.width/(3*@tileWidth)
  end
  return frames
end

def autotileFrame(id)
  autotile=@autotiles[id/48-1]
  return -1 if !autotile || autotile.disposed?
  frames=1
  if autotile.height==@tileHeight
  frames=autotile.width/@tileWidth
  else
  frames=autotile.width/(3*@tileWidth)
  end
  return (Graphics.frame_count/Animated_Autotiles_Frames)%frames
end

def repaintAutotiles
 for i in 0...@autotileInfo.length
  next if !@autotileInfo[i]
  frame=autotileFrame(i)
  @autotileInfo[i].clear
  bltAutotile(@autotileInfo[i],0,0,i,frame)
 end
end

def getAutotile(sprite,id)
  frames=@framecount[id/48-1]
  if frames<=1
  anim=0
  else
  anim=(Graphics.frame_count/Animated_Autotiles_Frames)%frames
  end
  return if anim<0
  bitmap=@autotileInfo[id]
  if !bitmap
    bitmap=Bitmap.new(@tileWidth,@tileHeight)
    bltAutotile(bitmap,0,0,id,anim)
    @autotileInfo[id]=bitmap
  end
  if sprite.bitmap!=bitmap
  sprite.bitmap=bitmap
  end
end

def getRegularTile(sprite,id)
 if !@diffsizes
  if sprite.bitmap!=@tileset
  sprite.bitmap=@tileset
  end
  sprite.src_rect.set(((id - 384)&7)*@tileSrcWidth,((id - 384)>>3)*@tileSrcHeight,@tileSrcWidth,@tileSrcHeight)
 else
  bitmap=@regularTileInfo[id]
  if !bitmap
  bitmap=Bitmap.new(@tileWidth,@tileHeight)
  rect=Rect.new(((id - 384)&7)*@tileSrcWidth,((id - 384)>>3)*@tileSrcHeight,@tileSrcWidth,@tileSrcHeight)
  bitmap.stretch_blt(Rect.new(0,0,@tileWidth,@tileHeight),@tileset,rect)
  @regularTileInfo[id]=bitmap
  end
  if sprite.bitmap!=bitmap
  sprite.bitmap=bitmap
  end
 end
end

def addTile(tiles,count,xpos,ypos,id)
  if id>=384
    if count>=tiles.length
      sprite=CustomTilemapSprite.new(@viewport)
      tiles.push(sprite,0)
    else
      sprite=tiles[count]
      tiles[count+1]=0
    end
    sprite.visible=@visible
    sprite.x=xpos
    sprite.y=ypos
    sprite.tone=@tone
    sprite.color=@color
    getRegularTile(sprite,id)
    spriteZ=(@priorities[id]==0||!@priorities[id]) ? 0 : ypos+@priorities[id]*32+32
    sprite.z=spriteZ
    count+=2
  else
    if count>=tiles.length
      sprite=CustomTilemapSprite.new(@viewport)
      tiles.push(sprite,1)
    else
      sprite=tiles[count]
      tiles[count+1]=1
    end
    sprite.visible=@visible
    sprite.x=xpos
    sprite.y=ypos
    sprite.tone=@tone
    sprite.color=@color
    getAutotile(sprite,id)
    spriteZ=(@priorities[id]==0||!@priorities[id]) ? 0 : ypos+@priorities[id]*32+32
    sprite.z=spriteZ
    count+=2
  end
  return count
end

def refresh_tileset
 i=0;len=@regularTileInfo.length;while i<len
  if @regularTileInfo[i]
    @regularTileInfo[i].dispose
    @regularTileInfo[i]=nil
  end
  i+=1
 end
 @regularTileInfo.clear
 @priotiles.clear
 ysize=@map_data.ysize
 xsize=@map_data.xsize
 zsize=@map_data.zsize
 if xsize>100 || ysize>100
  @fullyrefreshed=false
 else
  for z in 0...zsize
  for y in 0...ysize
    for x in 0...xsize
    id = @map_data[x, y, z]
    next if id==0 || !@priorities[id]
    next if @priorities[id]==0
    @priotiles.push([x,y,z,id])
    end
  end
  end
  @fullyrefreshed=true
 end
end

def refresh_flash
 if @flash_data && !@flash
  @flash=CustomTilemapSprite.new(viewport)
  @flash.visible=true
  @flash.z=1
  @flash.tone=tone
  @flash.color=color
  @flash.blend_type=1
  @flash.bitmap=Bitmap.new([graphicsWidth*2,1].max,[graphicsHeight*2,1].max)
  @firsttimeflash=true
 elsif !@flash_data && @flash
  @flash.bitmap.dispose if @flash.bitmap
  @flash.dispose
  @flash=nil
  @firsttimeflash=false
 end
end

def refresh_autotiles
 i=0;len=@autotileInfo.length;while i<len
  if @autotileInfo[i]
    @autotileInfo[i].dispose
    @autotileInfo[i]=nil
  end
  i+=1
 end
 i=0;len=@autosprites.length;while i<len
  if @autosprites[i]
    @autosprites[i].dispose
    @autosprites[i]=nil
  end
  i+=2
 end
 @autosprites.clear
 @autotileInfo.clear
 @prioautotiles.clear
 @priorect=nil
 @priorectautos=nil
 hasanimated=false
 for i in 0...7
  numframes=autotileNumFrames(48*(i+1))
  hasanimated=true if numframes>=2
  @framecount[i]=numframes
 end
 if hasanimated
  ysize=@map_data.ysize
  xsize=@map_data.xsize
  zsize=@map_data.zsize
  if xsize>100 || ysize>100
    @fullyrefreshedautos=false
  else
    for y in 0...ysize
    for x in 0...xsize
      haveautotile=false
      for z in 0...zsize
      id = @map_data[x, y, z]
      next if id==0 || id>=384 || @priorities[id]!=0 || !@priorities[id]
      next if @framecount[id/48-1]<2
      haveautotile=true
      break
      end
      @prioautotiles.push([x,y]) if haveautotile
    end
    end
    @fullyrefreshedautos=true
  end
 else
  @fullyrefreshedautos=true
 end
end

def map_data=(value)
 @map_data=value
 @tilesetChanged=true
end

def refreshFlashSprite
 return if !@flash || @flash_data.nil?
 ptX=@ox-@oxFlash
 ptY=@oy-@oyFlash
 if !@firsttimeflash && !@usedsprites &&
    ptX>=0 && ptX+@viewport.rect.width<=@flash.bitmap.width &&
    ptY>=0 && ptY+@viewport.rect.height<=@flash.bitmap.height
  @flash.ox=0
  @flash.oy=0
  @flash.src_rect.set(ptX.round,ptY.round,
    @viewport.rect.width,@viewport.rect.height)
  return
 end
 width=@flash.bitmap.width
 height=@flash.bitmap.height
 bitmap=@flash.bitmap
 ysize=@map_data.ysize
 xsize=@map_data.xsize
 zsize=@map_data.zsize
 @firsttimeflash=false
 @oxFlash=@ox-(width>>2)
 @oyFlash=@oy-(height>>2)
 @flash.ox=0
 @flash.oy=0
 @flash.src_rect.set(width>>2,height>>2,
    @viewport.rect.width,@viewport.rect.height)
 @flash.bitmap.clear
 @oxFlash=@oxFlash.floor
 @oyFlash=@oyFlash.floor
 xStart=(@oxFlash/@tileWidth)
 xStart=0 if xStart<0
 yStart=(@oyFlash/@tileHeight)
 yStart=0 if yStart<0
 xEnd=xStart+(width/@tileWidth)+1
 yEnd=yStart+(height/@tileHeight)+1
 xEnd=xsize if xEnd>=xsize
 yEnd=ysize if yEnd>=ysize
 if xStart<xEnd && yStart<yEnd
  yrange=yStart...yEnd
  xrange=xStart...xEnd
  tmpcolor=Color.new(0,0,0,0)
  for y in yrange
  ypos=(y*@tileHeight)-@oyFlash
  for x in xrange
    xpos=(x*@tileWidth)-@oxFlash
    id = @flash_data[x, y, 0]
    r=(id>>8)&15
    g=(id>>4)&15
    b=(id)&15
    tmpcolor.set(r<<4,g<<4,b<<4)
    bitmap.fill_rect(xpos,ypos,@tileWidth,@tileHeight,tmpcolor)
  end
  end
 end
end


def refreshLayer0(autotiles=false)
 if autotiles
  return true if !shown?
 end
 ptX=@ox-@oxLayer0
 ptY=@oy-@oyLayer0
 if !autotiles && !@firsttime && !@usedsprites &&
    ptX>=0 && ptX+@viewport.rect.width<=@layer0.bitmap.width &&
    ptY>=0 && ptY+@viewport.rect.height<=@layer0.bitmap.height
  if @layer0clip && @viewport.ox==0 && @viewport.oy==0
  @layer0.ox=0
  @layer0.oy=0
  @layer0.src_rect.set(ptX.round,ptY.round,
    @viewport.rect.width,@viewport.rect.height)
  else
  @layer0.ox=ptX.round
  @layer0.oy=ptY.round
  @layer0.src_rect.set(0,0,@layer0.bitmap.width,@layer0.bitmap.height)
  end
  return true
 end
 width=@layer0.bitmap.width
 height=@layer0.bitmap.height
 bitmap=@layer0.bitmap
 ysize=@map_data.ysize
 xsize=@map_data.xsize
 zsize=@map_data.zsize
 twidth=@tileWidth
 theight=@tileHeight
 mapdata=@map_data
 if autotiles
  return true if @fullyrefreshedautos && @prioautotiles.length==0
  xStart=(@oxLayer0/twidth)
  xStart=0 if xStart<0
  yStart=(@oyLayer0/theight)
  yStart=0 if yStart<0
  xEnd=xStart+(width/twidth)+1
  yEnd=yStart+(height/theight)+1
  xEnd=xsize if xEnd>xsize
  yEnd=ysize if yEnd>ysize
  return true if xStart>=xEnd || yStart>=yEnd
  trans=Color.new(0,0,0,0)
  temprect=Rect.new(0,0,0,0)
  tilerect=Rect.new(0,0,twidth,theight)
  zrange=0...zsize
  overallcount=0
  count=0
  if !@fullyrefreshedautos
  for y in yStart..yEnd
    for x in xStart..xEnd
    haveautotile=false
    for z in zrange
      id = mapdata[x, y, z]
      next if !id || id<48 || id>=384
      prioid=@priorities[id]
      next if prioid!=0 || !prioid
      fcount=@framecount[id/48-1]
      next if !fcount || fcount<2
      if !haveautotile
        haveautotile=true
        overallcount+=1
        xpos=(x*twidth)-@oxLayer0
        ypos=(y*theight)-@oyLayer0
        bitmap.fill_rect(xpos,ypos,twidth,theight,trans) if overallcount<=2000
        break
      end
    end
    for z in zrange
      id = mapdata[x,y,z]
      next if !id || id<48
      prioid=@priorities[id]
      next if prioid!=0 || !prioid
      if overallcount>2000
      xpos=(x*twidth)-@oxLayer0
      ypos=(y*theight)-@oyLayer0
      count=addTile(@autosprites,count,xpos,ypos,id)
      next
      elsif id>=384
      temprect.set(((id - 384)&7)*@tileSrcWidth,((id - 384)>>3)*@tileSrcHeight,@tileSrcWidth,@tileSrcHeight)
      xpos=(x*twidth)-@oxLayer0
      ypos=(y*theight)-@oyLayer0
      if @diffsizes
        bitmap.stretch_blt(Rect.new(xpos,ypos,twidth,theight),@tileset,temprect)
      else
        bitmap.blt(xpos,ypos,@tileset,temprect)
      end
      else
      tilebitmap=@autotileInfo[id]
      if !tilebitmap
        anim=autotileFrame(id)
        next if anim<0
        tilebitmap=Bitmap.new(twidth,theight)
        bltAutotile(tilebitmap,0,0,id,anim)
        @autotileInfo[id]=tilebitmap
      end
      xpos=(x*twidth)-@oxLayer0
      ypos=(y*theight)-@oyLayer0
      bitmap.blt(xpos,ypos,tilebitmap,tilerect)
      end
    end
    end
  end
  Graphics.frame_reset
  else
  if !@priorect || !@priorectautos || @priorect[0]!=xStart ||
      @priorect[1]!=yStart ||
      @priorect[2]!=xEnd ||
      @priorect[3]!=yEnd
    @priorectautos=@prioautotiles.find_all{|tile|
      x=tile[0]
      y=tile[1]
      # "next" means "return" here
      next !(x<xStart||x>xEnd||y<yStart||y>yEnd)
    }
    @priorect=[xStart,yStart,xEnd,yEnd]
  end
#  echoln ["autos",@priorect,@priorectautos.length,@prioautotiles.length]
  for tile in @priorectautos
    x=tile[0]
    y=tile[1]
    overallcount+=1
    xpos=(x*twidth)-@oxLayer0
    ypos=(y*theight)-@oyLayer0
    bitmap.fill_rect(xpos,ypos,twidth,theight,trans)
    z=0
    while z<zsize
    id = mapdata[x,y,z]
    z+=1
    next if !id || id<48
    prioid=@priorities[id]
    next if prioid!=0 || !prioid
    if id>=384
      temprect.set(((id - 384)&7)*@tileSrcWidth,((id - 384)>>3)*@tileSrcHeight,@tileSrcWidth,@tileSrcHeight)
      if @diffsizes
      bitmap.stretch_blt(Rect.new(xpos,ypos,twidth,theight),@tileset,temprect)
      else
      bitmap.blt(xpos,ypos,@tileset,temprect)
      end
    else
      tilebitmap=@autotileInfo[id]
      if !tilebitmap
        anim=autotileFrame(id)
        next if anim<0
        tilebitmap=Bitmap.new(twidth,theight)
        bltAutotile(tilebitmap,0,0,id,anim)
        @autotileInfo[id]=tilebitmap
      end
      bitmap.blt(xpos,ypos,tilebitmap,tilerect)
    end
    end
  end
  Graphics.frame_reset if overallcount>500
  end
  @usedsprites=false
  return true
 end
 return false if @usedsprites
 @firsttime=false
 @oxLayer0=@ox-(width>>2)
 @oyLayer0=@oy-(height>>2)
 if @layer0clip
  @layer0.ox=0
  @layer0.oy=0
  @layer0.src_rect.set(width>>2,height>>2,
    @viewport.rect.width,@viewport.rect.height)
 else
  @layer0.ox=(width>>2)
  @layer0.oy=(height>>2)
 end
 @layer0.bitmap.clear
 @oxLayer0=@oxLayer0.floor
 @oyLayer0=@oyLayer0.floor
 xStart=(@oxLayer0/twidth)
 xStart=0 if xStart<0
 yStart=(@oyLayer0/theight)
 yStart=0 if yStart<0
 xEnd=xStart+(width/twidth)+1
 yEnd=yStart+(height/theight)+1
 xEnd=xsize if xEnd>=xsize
 yEnd=ysize if yEnd>=ysize
 if xStart<xEnd && yStart<yEnd
  tmprect=Rect.new(0,0,0,0)
  yrange=yStart...yEnd
  xrange=xStart...xEnd
  for z in 0...zsize
  for y in yrange
    ypos=(y*theight)-@oyLayer0
    for x in xrange
    xpos=(x*twidth)-@oxLayer0
    id = mapdata[x, y, z]
    next if id==0 || @priorities[id]!=0 || !@priorities[id]
    if id>=384
      tmprect.set( ((id - 384)&7)*@tileSrcWidth,((id - 384)>>3)*@tileSrcHeight,@tileSrcWidth,@tileSrcHeight)
      if @diffsizes
        bitmap.stretch_blt(Rect.new(xpos,ypos,twidth,theight),@tileset,tmprect)
      else
        bitmap.blt(xpos,ypos,@tileset,tmprect)
      end
    else
      frames=@framecount[id/48-1]
      if frames<=1
        frame=0
      else
        frame=(Graphics.frame_count/Animated_Autotiles_Frames)%frames
      end
      bltAutotile(bitmap,xpos,ypos,id,frame)
    end
    end
  end
  end
  Graphics.frame_reset
 end
 return true
end
def getResizeFactor
  return $ResizeFactor ? $ResizeFactor : 1.0
end

def ox=(val)
  rf=getResizeFactor
  if rf!=1.0
    val=(val*rf).to_i
    val=(val/rf).to_i
  end
  wasshown=self.shown?
  @ox=val.floor
  @nowshown=(!wasshown && self.shown?)
end
def oy=(val)
  rf=getResizeFactor
  if rf!=1.0
    val=(val*rf).to_i
    val=(val/rf).to_i
  end
  wasshown=self.shown?
  @oy=val.floor
  @nowshown=(!wasshown && self.shown?)
end
def visible=(val)
  wasshown=@visible
  @visible=val
  @nowshown=(!wasshown && val)
end
def refresh(autotiles=false)
 @oldOx=@ox
 @oldOy=@oy
 usesprites=false
 if @layer0
  @layer0.visible=@visible
  usesprites=!refreshLayer0(autotiles)
  if autotiles && !usesprites
  return
  end
 else
  usesprites=true
 end
 refreshFlashSprite
 vpx=@viewport.rect.x
 vpy=@viewport.rect.y
 vpr=@viewport.rect.width+vpx
 vpb=@viewport.rect.height+vpy
 xsize=@map_data.xsize
 ysize=@map_data.ysize
 minX=(@ox/@tileWidth)-1
 maxX=((@ox+@viewport.rect.width)/@tileWidth)+1
 minY=(@oy/@tileHeight)-1
 maxY=((@oy+@viewport.rect.height)/@tileHeight)+1
 minX=0 if minX<0
 minX=xsize-1 if minX>=xsize
 maxX=0 if maxX<0
 maxX=xsize-1 if maxX>=xsize
 minY=0 if minY<0
 minY=ysize-1 if minY>=ysize
 maxY=0 if maxY<0
 maxY=ysize-1 if maxY>=ysize
 count=0
 if minX<maxX && minY<maxY
  @usedsprites=usesprites || @usedsprites
  if @layer0
  @layer0.visible=false if usesprites
  end
  if @fullyrefreshed
  if !@priotilesrect || !@priotilesfast ||
      @priotilesrect[0]!=minX ||
      @priotilesrect[1]!=minY ||
      @priotilesrect[2]!=maxX ||
      @priotilesrect[3]!=maxY
    @priotilesfast=@priotiles.find_all{|tile|
      x=tile[0]
      y=tile[1]
      # "next" means "return" here
      next !(x<minX||x>maxX||y<minY||y>maxY)
    }
    @priotilesrect=[minX,minY,maxX,maxY]
  end
#  echoln [minX,minY,maxX,maxY,@priotilesfast.length,@priotiles.length]
  for prio in @priotilesfast
    xpos=(prio[0]*@tileWidth)-@ox
    ypos=(prio[1]*@tileHeight)-@oy
    count=addTile(@tiles,count,xpos,ypos,prio[3])
  end
  else
  if !@priotilesrect || !@priotilesfast ||
      @priotilesrect[0]!=minX ||
      @priotilesrect[1]!=minY ||
      @priotilesrect[2]!=maxX ||
      @priotilesrect[3]!=maxY
    @priotilesfast=[]
    for z in 0...@map_data.zsize
      for y in minY..maxY
      for x in minX..maxX
        id = @map_data[x, y, z]
        next if id==0 || !@priorities[id]
        next if @priorities[id]==0
        @priotilesfast.push([x,y,z,id])
      end
      end
    end
    @priotilesrect=[minX,minY,maxX,maxY]
  end
  for prio in @priotilesfast
    xpos=(prio[0]*@tileWidth)-@ox
    ypos=(prio[1]*@tileHeight)-@oy
    count=addTile(@tiles,count,xpos,ypos,prio[3])
  end
  end
 end
 if count<@tiles.length
  bigchange=(count<=(@tiles.length*2/3)) && (@tiles.length*2/3)>25
  j=count;len=@tiles.length;while j<len
  sprite=@tiles[j]
  @tiles[j+1]=-1
  if bigchange
    sprite.dispose
    @tiles[j]=nil
    @tiles[j+1]=nil
  elsif !@tiles[j].disposed?
    sprite.visible=false if sprite.visible
  end
  j+=2
  end
  @tiles.compact! if bigchange
 end
end

end

class SynchronizedTilemapAutotilesInternal
  def initialize(oldat)
    @atdisposables=[[],[],[],[],[],[],[]]
    @atframes=[[],[],[],[],[],[],[]]
    @atframe=[-1,-1,-1,-1,-1,-1,-1]
    @autotiles=[]
    @oldat=oldat
  end
  def dispose
    for i in 0...7
      for bitmap in @atdisposables[i]
        bitmap.dispose
      end
      @atdisposables[i].clear
      @atframes[i].clear
    end
  end
  def [](i)
    return @autotiles[i]
  end
  def []=(i,value)
    for frame in @atdisposables[i]
      frame.dispose
    end
    @atframe[i]=-1
    @atframes[i].clear
    @atdisposables[i].clear
    if value && !value.disposed?
      if value.height==32
        frames=value.width/32
        for j in 0...frames
          @atdisposables[i][j]=Bitmap.new(32,32)
          @atdisposables[i][j].blt(0,0,value,Rect.new(j*32,0,32,32))
          @atframes[i][j]=@atdisposables[i][j]
        end
      elsif value.height==128
        frames=value.width/96
        for j in 0...frames
          @atdisposables[i][j]=Bitmap.new(96,128)
          @atdisposables[i][j].blt(0,0,value,Rect.new(j*96,0,96,128))
          @atframes[i][j]=@atdisposables[i][j]
        end
      else
        @atframes[i][0]=value
      end
    else
      @atframes[i][0]=value
    end
    @autotiles[i]=value
    sync
  end
  def sync
  frameused=[]
  for i in 0...7
    frames=[1,@atframes[i].length].max
    frame=(Graphics.frame_count/15)%frames
    if frames>1 && @atframe[i]!=frame
      @oldat[i]=@atframes[i][frame]
      @atframe[i]=frame
    end
  end
  end
end

class SynchronizedTilemapAutotiles
 def initialize(autotiles)
  @autotiles=autotiles
 end
 def [](i)
  @autotiles[i]
 end
 def []=(i,value)
  @autotiles[i]=value
 end
end

class SynchronizedTilemap < Tilemap
  # This class derives from Tilemap just to synchronize
  # the tilemap animation.
  attr_accessor :numupdates
  def initialize(viewport=nil)
    super(viewport)
    @updating=true
    @autotiles=SynchronizedTilemapAutotilesInternal.new(self.autotiles)
    @autos=SynchronizedTilemapAutotiles.new(@autotiles)
    @updating=false
  end
  def dispose
    @autotiles.dispose
    super
  end
  def autotiles
    if @updating
      super
    else
      return @autos
    end 
  end
  def update
  return if disposed?
  @autotiles.sync
  super
  end
end