Class: Chingu::GameStates::Edit

Inherits:
Chingu::GameState show all
Defined in:
lib/chingu/game_states/edit.rb

Overview

Premade game state for chingu - simple level editing. Start editing in a gamestate with:

push_game_state(Chingu::GameStates::Edit)

requires the global $window set to the instance of Gosu::Window (automaticly handled if you use Chingu::Window)

Edit will only edit game objects created with the editor itself or that's been loaded with load_game_objects. This makes mixing of loaded game objects and code create game objects possible, in the game, and in the editor.

Various shortcuts are available in the editor

1-5: create object 1..5 shown in toolbar DEL: delete selected objects CTRL+A: select all objects (not code-created ones though) S: Save E: Save and Quit Right Mouse Button Click: Copy object that was clicked on for fast duplication Arrows: Scroll within a viewport Page up/down: Modify the zorder of selected game objects

Constant Summary collapse

CENTER_TO_FACTOR = 
{ 0 => -1, 0.5 => 0, 1 => 1 }

Constants included from Helpers::GFX

Helpers::GFX::CIRCLE_STEP

Instance Attribute Summary collapse

Attributes inherited from Chingu::GameState

#game_objects, #game_state_manager, #options, #previous_game_state

Attributes included from Helpers::InputDispatcher

#input_clients

Instance Method Summary collapse

Methods inherited from Chingu::GameState

#button_down, #button_up, #close, #close_game, #draw_trait, #filename, #setup_trait, #to_s, #to_sym, trait, #trait_options, traits, #update_trait

Methods included from Helpers::ClassInheritableAccessor

included

Methods included from Helpers::InputClient

#add_inputs, #holding?, #holding_all?, #holding_any?, #input, #input=, #on_input

Methods included from Helpers::InputDispatcher

#add_input_client, #dispatch_button_down, #dispatch_button_up, #dispatch_input_for, #remove_input_client

Methods included from Helpers::GameObject

#add_game_object, #game_objects, #game_objects_of_class, #hide_game_object, #load_game_objects, #pause_game_object, #remove_game_object, #save_game_objects, #show_game_object, #unpause_game_object

Methods included from Helpers::GameState

#clear_game_states, #current_game_state, #game_states, #pop_game_state, #push_game_state, #switch_game_state, #transitional_game_state

Methods included from Helpers::GFX

#draw_circle, #draw_rect, #fill, #fill_gradient, #fill_rect

Constructor Details

#initialize(options = {}) ⇒ Edit

Returns a new instance of Edit.



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# File 'lib/chingu/game_states/edit.rb', line 50

def initialize(options = {})
  super
          
  options = {:draw_grid => true, :snap_to_grid => true, :resize_to_grid => true}.merge(options)
  
  @grid = options[:grid] || [8,8]
  @grid_color = options[:grid_color] || Gosu::Color.new(0xaa222222)
  @draw_grid = options[:draw_grid]
  @snap_to_grid = options[:snap_to_grid]      # todo

  @resize_to_grid = options[:resize_to_grid]  # todo

  
  @classes = Array(options[:classes] || game_object_classes)
  @except = options[:except] || []
  @classes -= Array(@except)
  @debug = options[:debug]
  @attributes = options[:attributes] || [:x, :y, :angle, :zorder, :factor_x, :factor_y, :alpha]

  #

  # Turn on cursor + turn it back to its original value in finalize()

  #

  @original_cursor = $window.cursor
  $window.cursor = true
  
  p @classes  if @debug

  @hud_color = Gosu::Color.new(200,70,70,70)
  @selected_game_object = nil
  self.input =  {
    :f1 => :display_help,
    :left_mouse_button => :left_mouse_button,
    :released_left_mouse_button => :released_left_mouse_button,
    :right_mouse_button => :right_mouse_button,
    :released_right_mouse_button => :released_right_mouse_button,

    :delete    => :destroy_selected_game_objects,
    :d         => :destroy_selected_game_objects,
    :backspace => :reset_selected_game_objects,

    :holding_numpad_7 => :scale_down,
    :holding_numpad_9 => :scale_up,
    :holding_numpad_4 => :tilt_left,
    :holding_numpad_8 => :tilt_right,
    :holding_numpad_1 => :dec_alpha,
    :holding_numpad_3 => :inc_alpha,

    :r => :scale_up,
    :f => :scale_down,
    :t => :tilt_left,
    :g => :tilt_right,
    :y => :inc_zorder,
    :h => :dec_zorder,
    :u => :inc_alpha,
    :j => :dec_alpha,

    :page_up => :inc_zorder,
    :page_down => :dec_zorder,

    :s => :try_save,
    :a => :try_select_all,

    :e => :save_and_quit,

    :esc => :esc,
    :q => :quit,

    :up_arrow => :move_up,
    :down_arrow => :move_down,
    :left_arrow => :move_left,
    :right_arrow => :move_right,

    :holding_up_arrow => :try_scroll_up,
    :holding_down_arrow => :try_scroll_down,
    :holding_left_arrow => :try_scroll_left,
    :holding_right_arrow => :try_scroll_right,

    :plus => :scale_up,
    :minus => :scale_down,
    :mouse_wheel_up => :mouse_wheel_up,
    :mouse_wheel_down => :mouse_wheel_down,

    :"1" => :create_object_1,
    :"2" => :create_object_2,
    :"3" => :create_object_3,
    :"4" => :create_object_4,
    :"5" => :create_object_5,
  }

  @hud_height = 140
  @toolbar_icon_size = [32,32]
  x = 20
  y = 60
  @classes.each do |klass|
    puts "Creating a #{klass}"  if @debug

    # We initialize x,y,zorder,rotation_center after creation

    # so they're not overwritten by the class initialize/setup or simular

    begin
      game_object = klass.create(:paused => true)
      game_object.x = x + 10
      game_object.y = y
      game_object.options[:toolbar] = true
      game_object.rotation_center = :center_center

      # Scale down object to fit our toolbar

      if game_object.image
        Text.create("#{klass.to_s[0..9]}\n#{game_object.width.to_i}x#{game_object.height.to_i}", :size => 12, :x=>x-16, :y=>y+18, :max_width => 55, :rotation_center => :top_left, :align => :center, :factor => 1)
        game_object.size = @toolbar_icon_size
        x += 50
      else
        puts "Skipping #{klass} - no image" if @debug
        game_object.destroy
      end
    rescue
      puts "Couldn't use #{klass} in editor: #{$!}"
    end
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(symbol, *args) ⇒ Object

If we're editing a game state with automaticly called special methods, the following takes care of those.



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# File 'lib/chingu/game_states/edit.rb', line 671

def method_missing(symbol, *args)
  if symbol != :button_down || symbol != :button_up
    previous_game_state.__send__(symbol, *args)
  end
end

Instance Attribute Details

#classes ⇒ Object (readonly)

Returns the value of attribute classes.



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# File 'lib/chingu/game_states/edit.rb', line 48

def classes
  @classes
end

#debug ⇒ Object

Returns the value of attribute debug.



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# File 'lib/chingu/game_states/edit.rb', line 47

def debug
  @debug
end

#exclude ⇒ Object (readonly)

Returns the value of attribute exclude.



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# File 'lib/chingu/game_states/edit.rb', line 48

def exclude
  @exclude
end

#file ⇒ Object

Returns the value of attribute file.



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# File 'lib/chingu/game_states/edit.rb', line 47

def file
  @file
end

#grid ⇒ Object

Returns the value of attribute grid.



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# File 'lib/chingu/game_states/edit.rb', line 47

def grid
  @grid
end

#hud_color ⇒ Object

Returns the value of attribute hud_color.



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# File 'lib/chingu/game_states/edit.rb', line 47

def hud_color
  @hud_color
end

Instance Method Details

#bounding_box(game_object) ⇒ Object Also known as: bb

Returns a bounding box (Rect-class) for any gameobject It will take into considerations rotation_center and scaling



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# File 'lib/chingu/game_states/edit.rb', line 656

def bounding_box(game_object)
  width, height = game_object.width, game_object.height
  x = game_object.x - width * game_object.center_x
  y = game_object.y - height * game_object.center_y
  x += width * CENTER_TO_FACTOR[game_object.center_x]   if game_object.factor_x < 0
  y += height * CENTER_TO_FACTOR[game_object.center_y]  if game_object.factor_y < 0
  return Rect.new(x, y, width, height)
end

#copy_game_object(template) ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 636

def copy_game_object(template)
  game_object = template.class.create(:parent => previous_game_state)
  # If we don't create it from the toolbar, we're cloning another object

  # When cloning we wan't the cloned objects attributes

  game_object.attributes = template.attributes  unless template.options[:toolbar]       
  game_object.x = self.mouse_x
  game_object.y = self.mouse_y
  game_object.options[:created_with_editor] = true
          
  game_object.options[:mouse_x_offset] = (game_object.x - self.mouse_x) rescue 0
  game_object.options[:mouse_y_offset] = (game_object.y - self.mouse_y) rescue 0
  
  return game_object
end

#create_object_1 ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 448

def create_object_1; create_object_nr(0); end

#create_object_2 ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 449

def create_object_2; create_object_nr(1); end

#create_object_3 ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 450

def create_object_3; create_object_nr(2); end

#create_object_4 ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 451

def create_object_4; create_object_nr(3); end

#create_object_5 ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 452

def create_object_5; create_object_nr(4); end

#create_object_nr(number) ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 441

def create_object_nr(number)
  c = @classes[number].create(:x => self.mouse_x, :y => self.mouse_y, :parent => previous_game_state)  if @classes[number]
  c.options[:created_with_editor] = true
  c.update
  #@text.text = "Created a #{c.class} @ #{c.x} / #{c.y}"

end

#dec_alpha ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 581

def dec_alpha
  selected_game_objects.each { |game_object| game_object.alpha -= 1 }
end

#dec_zorder ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 575

def dec_zorder
  selected_game_objects.each { |game_object| game_object.zorder -= 1 }
end

#deselect_selected_game_objects ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 423

def deselect_selected_game_objects
  selected_game_objects.each { |object| object.options[:selected] = nil }
end

#destroy_selected_game_objects ⇒ Object

Call destroy on all selected game objects



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# File 'lib/chingu/game_states/edit.rb', line 419

def destroy_selected_game_objects
  selected_game_objects.each { |game_object| game_object.destroy }
end

#display_help ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 168

def display_help
text = "  F1: This help screen\n  ESC: Return to Edit\n  \n  1-5: create object 1..5 shown in toolbar at mousecursor\n  CTRL+A: select all objects (not in-code-created ones though)\n  CTRL+S: Save\n  E: Save and Quit\n  Q: Quit (without saving)\n  ESC: Deselect all objects\n  Right Mouse Button Click: Copy object bellow cursor for fast duplication\n  Arrow-keys (with selected objects): Move objects 1 pixel at the time\n  Arrow-keys (with no selected objects): Scroll within a viewport\n  \n\n  Bellow keys operates on all currently selected game objects\n  -----------------------------------------------------------------------------------\n  DEL: delete selected objects\n  BACKSPACE: reset angle and scale to default values\n  Page Up: Increase zorder\n  Page Down: Decrease zorder\n  \n  R: scale up\n  F: scale down\n  T: tilt left\n  G: tilt right\n  Y: inc zorder\n  H: dec zorder\n  U: less transparency\n  J: more transparencty\n\n  Mouse Wheel (with no selected objects): Scroll viewport up/down\n  Mouse Wheel: Scale up/down\n  SHIFT + Mouse Wheel: Tilt left/right\n  CTRL + Mouse Wheel: Zorder up/down\n  ALT + Mouse Wheel: Transparency less/more\n"
  
  push_game_state( GameStates::Popup.new(:text => text) )
end

#draw ⇒ Object

DRAW



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# File 'lib/chingu/game_states/edit.rb', line 286

def draw
  # Draw prev game state onto screen (the level we're editing)

  previous_game_state.draw
  
  # Restart z-ordering, everything after this will be drawn on top

  $window.flush
          
  draw_grid if @draw_grid
  
  #

  # Draw an edit HUD

  #

  $window.draw_quad(  0,0,@hud_color, $window.width,0,@hud_color,
                      $window.width,@hud_height,@hud_color,0,@hud_height,@hud_color)
       
  #

  # Draw gameobjects

  #

  super
          
  #

  # Draw red rectangles/circles around all selected game objects

  #        

  if defined?(previous_game_state.viewport)
    previous_game_state.viewport.apply { draw_selections }
  else
    draw_selections
  end
  
  @cursor_game_object.draw_at($window.mouse_x, $window.mouse_y)   if @cursor_game_object
end

#draw_grid ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 210

def draw_grid
  return unless @grid
  
  start_x, start_y = 0,0
  if defined?(previous_game_state.viewport)
    start_x = -previous_game_state.viewport.x % @grid.first
    start_y = -previous_game_state.viewport.y % @grid.last
  end
  (start_x .. $window.width).step(@grid.first).each do |x|
    $window.draw_line(x, 1, @grid_color, x, $window.height, @grid_color, 0, :additive)
  end
  (start_y .. $window.height).step(@grid.last).each do |y|
    $window.draw_line(1, y, @grid_color, $window.width, y, @grid_color, 0, :additive)
  end
  
end

#draw_selections ⇒ Object

Draw a red rectangle around all selected objects



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# File 'lib/chingu/game_states/edit.rb', line 321

def draw_selections
  selected_game_objects.each { |game_object| draw_rect(bounding_box(game_object), Color::RED, 10000) }
end

#editable_game_objects ⇒ Object

Returns a list of game objects the editor can create. 2 types of object gets this flag:

  • An object loaded with load_game_objects
  • An object created from within the editor

This helps us mix code-created with editor-created objects inside the editor and not muck around with the code-created ones.



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# File 'lib/chingu/game_states/edit.rb', line 405

def editable_game_objects
  previous_game_state.game_objects.select { |o| o.options[:created_with_editor] }
end

#empty_area_at_cursor ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 427

def empty_area_at_cursor
  game_object_at(self.mouse_x, self.mouse_y)==nil && 
  game_object_icon_at($window.mouse_x, $window.mouse_y) == nil
end

#esc ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 597

def esc
  deselect_selected_game_objects
  @cursor_game_object = nil
end

#finalize ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 500

def finalize
  if defined?(previous_game_state.viewport)
    previous_game_state.viewport.game_area = @game_area_backup
  end
  $window.cursor = @original_cursor
end

#game_object_at(x, y) ⇒ Object

Get editable object at X/Y .. if there's many objects at the same coordinate.. .. get the one with highest zorder.



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# File 'lib/chingu/game_states/edit.rb', line 476

def game_object_at(x, y)
  editable_game_objects.select do |game_object|
    next if game_object.is_a? Text
    bounding_box(game_object).collide_point?(x,y)
  end.sort {|x,y| y.zorder <=> x.zorder }.first
end

#game_object_classes ⇒ Object

Get all classes based on GameObject except Chingus internal classes.



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# File 'lib/chingu/game_states/edit.rb', line 435

def game_object_classes
  ObjectSpace.enum_for(:each_object, class << GameObject; self; end).to_a.select do |game_class|
    game_class.instance_methods && !game_class.to_s.include?("Chingu::")
  end
end

#game_object_icon_at(x, y) ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 464

def game_object_icon_at(x, y)
  game_objects.select do |game_object|
    next if game_object.is_a? Text
    next unless game_object.image
    bounding_box(game_object).collide_point?(x,y)
  end.first
end

#inc_alpha ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 578

def inc_alpha
  selected_game_objects.each { |game_object| game_object.alpha += 1 }
end

#inc_zorder ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 572

def inc_zorder
  selected_game_objects.each { |game_object| game_object.zorder += 1 }
end

#inside_window?(x = $window.mouse_x, y = $window.mouse_y) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chingu/game_states/edit.rb', line 632

def inside_window?(x = $window.mouse_x, y = $window.mouse_y)
  x >= 0 && x <= $window.width && y >= 0 && y <= $window.height
end

#left_mouse_button ⇒ Object

CLICKED LEFT MOUSE BUTTON



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# File 'lib/chingu/game_states/edit.rb', line 328

def left_mouse_button
  @left_mouse_button  = true
  @selected_game_object = false
  
  if defined?(self.previous_game_state.viewport)
    @left_mouse_click_at = [self.previous_game_state.viewport.x + $window.mouse_x, self.previous_game_state.viewport.y + $window.mouse_y]
  else
    @left_mouse_click_at = [$window.mouse_x, $window.mouse_y]
  end
  
  # Put out a new game object in the editor window and select it right away

  @selected_game_object = copy_game_object(@cursor_game_object)  if @cursor_game_object
  
  # Check if user clicked on anything in the icon-toolbar of available game objects

  @cursor_game_object = game_object_icon_at($window.mouse_x, $window.mouse_y)

  # Get editable game object that was clicked at (if any)

  @selected_game_object ||= game_object_at(self.mouse_x, self.mouse_y)
  
  if @selected_game_object && defined?(self.previous_game_state.viewport)
    self.previous_game_state.viewport.center_around(@selected_game_object)  if @left_double_click
  end
                
  if @selected_game_object
    #

    # If clicking on a new object that's wasn't previosly selected

    #  --> deselect all objects unless holding left_ctrl

    #

    if @selected_game_object.options[:selected] == nil
      selected_game_objects.each { |object| object.options[:selected] = nil } unless holding?(:left_ctrl)
    end
    
    if holding?(:left_ctrl)
      @selected_game_object.options[:selected] = !@selected_game_object.options[:selected]
    else
      @selected_game_object.options[:selected] = true
    end
    
    if holding?(:left_shift)
      previous_game_state.game_objects.select { |x| x.class == @selected_game_object.class }.each do |game_object|
        game_object.options[:selected] = true
      end
    end
      
    #

    # Re-align all objects x/y offset in relevance to the cursor

    #

    selected_game_objects.each do |selected_game_object|
      selected_game_object.options[:mouse_x_offset] = selected_game_object.x - self.mouse_x
      selected_game_object.options[:mouse_y_offset] = selected_game_object.y - self.mouse_y
    end
  else
    deselect_selected_game_objects unless holding?(:left_ctrl)
  end
end

#mouse_wheel_down ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 548

def mouse_wheel_down
  if selected_game_objects.empty?
    scroll_down(40)
  else
    tilt_right && return if holding?(:left_shift)
    dec_zorder && return if holding?(:left_ctrl)
    dec_alpha && return if holding?(:left_alt)
    scale_down
  end
end

#mouse_wheel_up ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 537

def mouse_wheel_up
  if selected_game_objects.empty?
    scroll_up(40)
  else
    tilt_left && return if holding?(:left_shift)
    inc_zorder && return if holding?(:left_ctrl)
    inc_alpha && return if holding?(:left_alt)
    scale_up
  end
end

#mouse_x ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 620

def mouse_x
  x = $window.mouse_x
  x += self.previous_game_state.viewport.x if defined?(self.previous_game_state.viewport)
  return x
end

#mouse_y ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 626

def mouse_y
  y = $window.mouse_y
  y += self.previous_game_state.viewport.y if defined?(self.previous_game_state.viewport)
  return y
end

#move_down ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 519

def move_down
  scroll_down && return   if selected_game_objects.empty?
  selected_game_objects.each { |game_object| game_object.y += 1 }
end

#move_left ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 507

def move_left
  scroll_left && return   if selected_game_objects.empty?
  selected_game_objects.each { |game_object| game_object.x -= 1 }
end

#move_right ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 511

def move_right
  scroll_right && return  if selected_game_objects.empty?
  selected_game_objects.each { |game_object| game_object.x += 1 }
end

#move_up ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 515

def move_up
  scroll_up && return     if selected_game_objects.empty?
  selected_game_objects.each { |game_object| game_object.y -= 1 }
end

#page_down ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 604

def page_down
  self.previous_game_state.viewport.y += $window.height if defined?(self.previous_game_state.viewport)
end

#page_up ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 601

def page_up
  self.previous_game_state.viewport.y -= $window.height if defined?(self.previous_game_state.viewport)
end

#quit ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 489

def quit
  pop_game_state
end

#released_left_mouse_button ⇒ Object

RELASED LEFT MOUSE BUTTON



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# File 'lib/chingu/game_states/edit.rb', line 393

def released_left_mouse_button
  @left_mouse_button = false
end

#released_right_mouse_button ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 387

def released_right_mouse_button
end

#reset_selected_game_objects ⇒ Object

Resets selected game objects defaults, angle=0, scale=1.



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# File 'lib/chingu/game_states/edit.rb', line 457

def reset_selected_game_objects
  selected_game_objects.each do |game_object|
    game_object.angle = 0
    game_object.scale = 1
  end
end

#right_mouse_button ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 384

def right_mouse_button
  @cursor_game_object = @cursor_game_object ?  nil : game_object_at(mouse_x, mouse_y)
end

#save ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 492

def save 
  save_game_objects(:game_objects => editable_game_objects, :file => @file, :classes => @classes, :attributes => @attributes)
end

#save_and_quit ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 495

def save_and_quit
  save unless holding?(:left_ctrl)
  quit
end

#scale_down ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 568

def scale_down
  scale_down_x && scale_down_y
end

#scale_down_x ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 590

def scale_down_x
  selected_game_objects.each { |game_object| game_object.width -= grid[0] if game_object.width > grid[0] }
end

#scale_down_y ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 593

def scale_down_y
  selected_game_objects.each { |game_object| game_object.height -= grid[1] if game_object.height > grid[1] }
end

#scale_up ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 565

def scale_up
  scale_up_x && scale_up_y
end

#scale_up_x ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 584

def scale_up_x
  selected_game_objects.each { |game_object| game_object.width += grid[0] }
end

#scale_up_y ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 587

def scale_up_y
  selected_game_objects.each { |game_object| game_object.height += grid[1] }
end

#scroll_down(amount = 10) ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 610

def scroll_down(amount = 10)
  self.previous_game_state.viewport.y += amount if defined?(self.previous_game_state.viewport)
end

#scroll_left(amount = 10) ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 613

def scroll_left(amount = 10)
  self.previous_game_state.viewport.x -= amount if defined?(self.previous_game_state.viewport)
end

#scroll_right(amount = 10) ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 616

def scroll_right(amount = 10)
  self.previous_game_state.viewport.x += amount if defined?(self.previous_game_state.viewport)
end

#scroll_up(amount = 10) ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 607

def scroll_up(amount = 10)
  self.previous_game_state.viewport.y -= amount if defined?(self.previous_game_state.viewport)
end

#selected_game_objects ⇒ Object

Returns a list of selected game objects



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# File 'lib/chingu/game_states/edit.rb', line 412

def selected_game_objects
  editable_game_objects.select { |o| o.options[:selected] }
end

#setup ⇒ Object

SETUP



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# File 'lib/chingu/game_states/edit.rb', line 230

def setup
  @scroll_border_thickness = 30
  @file = options[:file] || previous_game_state.filename + ".yml"
  @title = Text.create("File: #{@file}", :x => 5, :y => 2, :factor => 1, :size => 16)
  @title.text += " - Grid: #{@grid}" if @grid
  @text = Text.create("", :x => 300, :y => 20, :factor => 1, :size => 16)
  @status_text = Text.create("-", :x => 5, :y => 20, :factor => 1, :size => 16)
  
  if defined?(previous_game_state.viewport)
    @game_area_backup = previous_game_state.viewport.game_area.dup
    previous_game_state.viewport.game_area.x -= @hud_height
    previous_game_state.viewport.game_area.y -= @hud_height
  end
end

#tilt_left ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 559

def tilt_left
  selected_game_objects.each { |game_object| game_object.angle -= 5 }
end

#tilt_right ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 562

def tilt_right
  selected_game_objects.each { |game_object| game_object.angle += 5 }        
end

#try_save ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 486

def try_save
  save if holding?(:left_ctrl)
end

#try_scroll_down ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 533

def try_scroll_down
  scroll_down if selected_game_objects.empty?
end

#try_scroll_left ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 524

def try_scroll_left
  scroll_left if selected_game_objects.empty?
end

#try_scroll_right ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 527

def try_scroll_right
  scroll_right if selected_game_objects.empty?
end

#try_scroll_up ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 530

def try_scroll_up
  scroll_up   if selected_game_objects.empty?
end

#try_select_all ⇒ Object 



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# File 'lib/chingu/game_states/edit.rb', line 483

def try_select_all
  editable_game_objects.each { |x| x.options[:selected] = true }  if holding?(:left_ctrl)
end

#update ⇒ Object

UPDATE



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# File 'lib/chingu/game_states/edit.rb', line 248

def update        
  super
  
  @status_text.text = "#{self.mouse_x.to_i} / #{self.mouse_y.to_i}"
    
  @text.text = @selected_game_object.to_s
  
  #

  # We got a selected game object and the left mouse button is held down

  #

  if @left_mouse_button && @selected_game_object
    selected_game_objects.each do |selected_game_object|            
      selected_game_object.x = self.mouse_x + selected_game_object.options[:mouse_x_offset]
      selected_game_object.y = self.mouse_y + selected_game_object.options[:mouse_y_offset]
      
      if @snap_to_grid
        selected_game_object.x -= selected_game_object.x % @grid[0]
        selected_game_object.y -= selected_game_object.y % @grid[1]
      end
    end
  elsif @left_mouse_button
    if defined?(self.previous_game_state.viewport)
      self.previous_game_state.viewport.x = @left_mouse_click_at[0] - $window.mouse_x
      self.previous_game_state.viewport.y = @left_mouse_click_at[1] - $window.mouse_y
    end
  end
  
  if inside_window?($window.mouse_x, $window.mouse_y)
    scroll_right  if $window.mouse_x > $window.width - @scroll_border_thickness
    scroll_left   if $window.mouse_x < @scroll_border_thickness
    scroll_up     if $window.mouse_y < @scroll_border_thickness
    scroll_down   if $window.mouse_y > $window.height - @scroll_border_thickness
  end
end