Added scripts

scripts/Window_Selectable.rb

@@ -0,0 +1,203 @@
+#==============================================================================
+# ** Window_Selectable
+#------------------------------------------------------------------------------
+#  This window class contains cursor movement and scroll functions.
+#==============================================================================
+
+class Window_Selectable < Window_Base
+  #--------------------------------------------------------------------------
+  # * Public Instance Variables
+  #--------------------------------------------------------------------------
+  attr_reader   :index                    # cursor position
+  attr_reader   :help_window              # help window
+  #--------------------------------------------------------------------------
+  # * Object Initialization
+  #     x      : window x-coordinate
+  #     y      : window y-coordinate
+  #     width  : window width
+  #     height : window height
+  #--------------------------------------------------------------------------
+  def initialize(x, y, width, height)
+    super(x, y, width, height)
+    @item_max = 1
+    @column_max = 1
+    @index = -1
+  end
+  #--------------------------------------------------------------------------
+  # * Set Cursor Position
+  #     index : new cursor position
+  #--------------------------------------------------------------------------
+  def index=(index)
+    @index = index
+    # Update Help Text (update_help is defined by the subclasses)
+    if self.active and @help_window != nil
+      update_help
+    end
+    # Update cursor rectangle
+    update_cursor_rect
+  end
+  #--------------------------------------------------------------------------
+  # * Get Row Count
+  #--------------------------------------------------------------------------
+  def row_max
+    # Compute rows from number of items and columns
+    return (@item_max + @column_max - 1) / @column_max
+  end
+  #--------------------------------------------------------------------------
+  # * Get Top Row
+  #--------------------------------------------------------------------------
+  def top_row
+    # Divide y-coordinate of window contents transfer origin by 1 row
+    # height of 32
+    return self.oy / 32
+  end
+  #--------------------------------------------------------------------------
+  # * Set Top Row
+  #     row : row shown on top
+  #--------------------------------------------------------------------------
+  def top_row=(row)
+    # If row is less than 0, change it to 0
+    if row < 0
+      row = 0
+    end
+    # If row exceeds row_max - 1, change it to row_max - 1
+    if row > row_max - 1
+      row = row_max - 1
+    end
+    # Multiply 1 row height by 32 for y-coordinate of window contents
+    # transfer origin
+    self.oy = row * 32
+  end
+  #--------------------------------------------------------------------------
+  # * Get Number of Rows Displayable on 1 Page
+  #--------------------------------------------------------------------------
+  def page_row_max
+    # Subtract a frame height of 32 from the window height, and divide it by
+    # 1 row height of 32
+    return (self.height - 32) / 32
+  end
+  #--------------------------------------------------------------------------
+  # * Get Number of Items Displayable on 1 Page
+  #--------------------------------------------------------------------------
+  def page_item_max
+    # Multiply row count (page_row_max) times column count (@column_max)
+    return page_row_max * @column_max
+  end
+  #--------------------------------------------------------------------------
+  # * Set Help Window
+  #     help_window : new help window
+  #--------------------------------------------------------------------------
+  def help_window=(help_window)
+    @help_window = help_window
+    # Update help text (update_help is defined by the subclasses)
+    if self.active and @help_window != nil
+      update_help
+    end
+  end
+  #--------------------------------------------------------------------------
+  # * Update Cursor Rectangle
+  #--------------------------------------------------------------------------
+  def update_cursor_rect
+    # If cursor position is less than 0
+    if @index < 0
+      self.cursor_rect.empty
+      return
+    end
+    # Get current row
+    row = @index / @column_max
+    # If current row is before top row
+    if row < self.top_row
+      # Scroll so that current row becomes top row
+      self.top_row = row
+    end
+    # If current row is more to back than back row
+    if row > self.top_row + (self.page_row_max - 1)
+      # Scroll so that current row becomes back row
+      self.top_row = row - (self.page_row_max - 1)
+    end
+    # Calculate cursor width
+    cursor_width = self.width / @column_max - 32
+    # Calculate cursor coordinates
+    x = @index % @column_max * (cursor_width + 32)
+    y = @index / @column_max * 32 - self.oy
+    # Update cursor rectangle
+    self.cursor_rect.set(x, y, cursor_width, 32)
+  end
+  #--------------------------------------------------------------------------
+  # * Frame Update
+  #--------------------------------------------------------------------------
+  def update
+    super
+    # If cursor is movable
+    if self.active and @item_max > 0 and @index >= 0
+      # If pressing down on the directional buttons
+      if Input.repeat?(Input::DOWN)
+        # If column count is 1 and directional button was pressed down with no
+        # repeat, or if cursor position is more to the front than
+        # (item count - column count)
+        if (@column_max == 1 and Input.trigger?(Input::DOWN)) or
+           @index < @item_max - @column_max
+          # Move cursor down
+          $game_system.se_play($data_system.cursor_se)
+          @index = (@index + @column_max) % @item_max
+        end
+      end
+      # If the up directional button was pressed
+      if Input.repeat?(Input::UP)
+        # If column count is 1 and directional button was pressed up with no
+        # repeat, or if cursor position is more to the back than column count
+        if (@column_max == 1 and Input.trigger?(Input::UP)) or
+           @index >= @column_max
+          # Move cursor up
+          $game_system.se_play($data_system.cursor_se)
+          @index = (@index - @column_max + @item_max) % @item_max
+        end
+      end
+      # If the right directional button was pressed
+      if Input.repeat?(Input::RIGHT)
+        # If column count is 2 or more, and cursor position is closer to front
+        # than (item count -1)
+        if @column_max >= 2 and @index < @item_max - 1
+          # Move cursor right
+          $game_system.se_play($data_system.cursor_se)
+          @index += 1
+        end
+      end
+      # If the left directional button was pressed
+      if Input.repeat?(Input::LEFT)
+        # If column count is 2 or more, and cursor position is more back than 0
+        if @column_max >= 2 and @index > 0
+          # Move cursor left
+          $game_system.se_play($data_system.cursor_se)
+          @index -= 1
+        end
+      end
+      # If R button was pressed
+      if Input.repeat?(Input::R)
+        # If bottom row being displayed is more to front than bottom data row
+        if self.top_row + (self.page_row_max - 1) < (self.row_max - 1)
+          # Move cursor 1 page back
+          $game_system.se_play($data_system.cursor_se)
+          @index = [@index + self.page_item_max, @item_max - 1].min
+          self.top_row += self.page_row_max
+        end
+      end
+      # If L button was pressed
+      if Input.repeat?(Input::L)
+        # If top row being displayed is more to back than 0
+        if self.top_row > 0
+          # Move cursor 1 page forward
+          $game_system.se_play($data_system.cursor_se)
+          @index = [@index - self.page_item_max, 0].max
+          self.top_row -= self.page_row_max
+        end
+      end
+    end
+    # Update help text (update_help is defined by the subclasses)
+    if self.active and @help_window != nil
+      update_help
+    end
+    # Update cursor rectangle
+    update_cursor_rect
+  end
+end