#==============================================================================
# ** Game_Player
#------------------------------------------------------------------------------
#  This class handles the player. Its functions include event starting
#  determinants and map scrolling. Refer to "$game_player" for the one
#  instance of this class.
#==============================================================================

class Game_Player < Game_Character
  attr_reader :move_speed

  #--------------------------------------------------------------------------
  # * Invariables
  #--------------------------------------------------------------------------
  CENTER_X = (320 - 16) * 4   # Center screen x-coordinate * 4
  CENTER_Y = (240 - 16) * 4   # Center screen y-coordinate * 4
  #--------------------------------------------------------------------------
  # * Passable Determinants
  #     x : x-coordinate
  #     y : y-coordinate
  #     d : direction (0,2,4,6,8)
  #         * 0 = Determines if all directions are impassable (for jumping)
  #--------------------------------------------------------------------------
  def passable?(x, y, d)
    # Get new coordinates
    new_x = x + (d == 6 ? 1 : d == 4 ? -1 : 0)
    new_y = y + (d == 2 ? 1 : d == 8 ? -1 : 0)
    # If coordinates are outside of map
    unless $game_map.valid?(new_x, new_y)
      # Impassable
      return false
    end
    # If debug mode is ON and ctrl key was pressed
    #if $DEBUG and Input.press?(Input::CTRL)
    #  # Passable
    #  return true
    #end
    super
  end
  #--------------------------------------------------------------------------
  # * Set Map Display Position to Center of Screen
  #--------------------------------------------------------------------------
  def center(x, y)
    #max_x = ($game_map.width - 20) * 128
    #max_y = ($game_map.height - 15) * 128
    #$game_map.display_x = [0, [x * 128 - CENTER_X, max_x].min].max
    #$game_map.display_y = [0, [y * 128 - CENTER_Y, max_y].min].max
    $game_map.display_x = x * 128 - CENTER_X
    $game_map.display_y = y * 128 - CENTER_Y
  end
  #--------------------------------------------------------------------------
  # * Move to Designated Position
  #     x : x-coordinate
  #     y : y-coordinate
  #--------------------------------------------------------------------------
  def moveto(x, y)
    super
    # Centering
    center(x, y)
  end
  #--------------------------------------------------------------------------
  # * Increaase Steps
  #--------------------------------------------------------------------------
  def increase_steps
    super
    emit_footstep
    # If move route is not forcing
    unless @move_route_forcing
      # Increase steps
      $game_party.increase_steps
      # Number of steps are an even number
      if $game_party.steps % 2 == 0
        # Slip damage check
        $game_party.check_map_slip_damage
      end
    end
  end
  #--------------------------------------------------------------------------
  # * Refresh
  #--------------------------------------------------------------------------
  def refresh
    # If party members = 0
    if $game_party.actors.size == 0
      # Clear character file name and hue
      @character_name = ""
      @character_hue = 0
      # End method
      return
    end
    # Get lead actor
    actor = $game_party.actors[0]
    # Set character file name and hue
    @character_name = actor.character_name
    @character_hue = actor.character_hue
    # Initialize opacity level and blending method
    @opacity = 255
    @blend_type = 0
  end
  #--------------------------------------------------------------------------
  # * Same Position Starting Determinant
  #--------------------------------------------------------------------------
  def check_event_trigger_here(triggers)
    result = false
    # If event is running
    if $game_system.map_interpreter.running?
      return result
    end
    # All event loops
    for event in $game_map.events.values
      # If event coordinates and triggers are consistent
      if event.x == @x and event.y == @y and triggers.include?(event.trigger)
        # If starting determinant is same position event (other than jumping)
        if not event.jumping? and event.over_trigger?
          event.start
          result = true
        end
      end
    end
    return result
  end
  #--------------------------------------------------------------------------
  # * Front Envent Starting Determinant
  #--------------------------------------------------------------------------
  def check_event_trigger_there(triggers)
    result = false
    # If event is running
    if $game_system.map_interpreter.running?
      return result
    end
    # Calculate front event coordinates
    new_x = @x + (@direction == 6 ? 1 : @direction == 4 ? -1 : 0)
    new_y = @y + (@direction == 2 ? 1 : @direction == 8 ? -1 : 0)
    # All event loops
    for event in $game_map.events.values
      # If event coordinates and triggers are consistent
      if event.x == new_x and event.y == new_y and
         triggers.include?(event.trigger)
        # If starting determinant is front event (other than jumping)
        if not event.jumping? and not event.over_trigger?
          event.start
          result = true
        end
      end
    end
    # If fitting event is not found
    if result == false
      # If front tile is a counter
      if $game_map.counter?(new_x, new_y)
        # Calculate 1 tile inside coordinates
        new_x += (@direction == 6 ? 1 : @direction == 4 ? -1 : 0)
        new_y += (@direction == 2 ? 1 : @direction == 8 ? -1 : 0)
        # All event loops
        for event in $game_map.events.values
          # If event coordinates and triggers are consistent
          if event.x == new_x and event.y == new_y and
             triggers.include?(event.trigger)
            # If starting determinant is front event (other than jumping)
            if not event.jumping? and not event.over_trigger?
              event.start
              result = true
            end
          end
        end
      end
    end
    return result
  end
  #--------------------------------------------------------------------------
  # * Touch Event Starting Determinant
  #--------------------------------------------------------------------------
  def check_event_trigger_touch(x, y)
    result = false
    # If event is running
    if $game_system.map_interpreter.running?
      return result
    end
    # All event loops
    for event in $game_map.events.values
      # If event coordinates and triggers are consistent
      if event.x == x and event.y == y and [1,2].include?(event.trigger)
        # If starting determinant is front event (other than jumping)
        if not event.jumping? and not event.over_trigger?
          event.start
          result = true
        end
      end
    end
    return result
  end
  #--------------------------------------------------------------------------
  # * Frame Update
  #--------------------------------------------------------------------------
  def update
    # Remember whether or not moving in local variables
    last_moving = moving?
    # If moving, event running, move route forcing, and message window
    # display are all not occurring
    unless $game_system.map_interpreter.running? or @move_route_forcing or
           $game_temp.message_window_showing
      # Adjust move speed
      @move_speed = Input.press?(Input::RUN) ? 4 : 3
      unless moving?
        # Move player in the direction the directional button is being pressed
        case Input.dir4
        when 2
          move_down
        when 4
          move_left
        when 6
          move_right
        when 8
          move_up
        end
      end
    else
      @move_speed = 2
    end
    # Remember coordinates in local variables
    last_real_x = @real_x
    last_real_y = @real_y
    super
    # If character moves down and is positioned lower than the center
    # of the screen
    if @real_y > last_real_y and @real_y - $game_map.display_y > CENTER_Y
      # Scroll map down
      $game_map.scroll_down(@real_y - last_real_y)
    end
    # If character moves left and is positioned more let on-screen than
    # center
    if @real_x < last_real_x and @real_x - $game_map.display_x < CENTER_X
      # Scroll map left
      $game_map.scroll_left(last_real_x - @real_x)
    end
    # If character moves right and is positioned more right on-screen than
    # center
    if @real_x > last_real_x and @real_x - $game_map.display_x > CENTER_X
      # Scroll map right
      $game_map.scroll_right(@real_x - last_real_x)
    end
    # If character moves up and is positioned higher than the center
    # of the screen
    if @real_y < last_real_y and @real_y - $game_map.display_y < CENTER_Y
      # Scroll map up
      $game_map.scroll_up(last_real_y - @real_y)
    end
    # If not moving
    unless moving?
      # If player was moving last time
      if last_moving
        # Event determinant is via touch of same position event
        check_event_trigger_here([1,2])
      end
      # If C button was pressed
      if Input.trigger?(Input::ACTION)
        # Same position and front event determinant
        check_event_trigger_here([0])
        check_event_trigger_there([0,1,2])
      end
    end
  end

  # Footsteps
  def emit_footstep
    return unless $game_temp.footstep_sfx
    tag = $game_map.terrain_tag(@x, @y) - 1
    if tag >= 0 && tag < $game_temp.footstep_sfx.size
      Audio.se_play("Audio/SE/#{$game_temp.footstep_sfx[tag]}.wav")
    end
  end
end