Class: CyberarmEngine::GameObject

Inherits:
Object
  • Object
show all
Includes:
Common
Defined in:
lib/cyberarm_engine/game_object.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Common

#alt_down?, #control_down?, #current_state, #darken, #draw_rect, #fill, #find_element_by_tag, #get_asset, #get_image, #get_sample, #get_song, #lighten, #opacity, #pop_state, #previous_state, #push_state, #shift_down?, #shift_state, #show_cursor, #show_cursor=, #window

Constructor Details

#initialize(options = {}) ⇒ GameObject

Returns a new instance of GameObject.



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# File 'lib/cyberarm_engine/game_object.rb', line 9

def initialize(options = {})
  window.current_state.add_game_object(self) if options[:auto_manage] || options[:auto_manage].nil?

  @options = options
  @image = options[:image] ? image(options[:image]) : nil
  x = options[:x] || 0
  y = options[:y] || 0
  z = options[:z] || 0
  @position = Vector.new(x, y, z)
  @velocity = Vector.new
  @last_position = Vector.new
  @angle = options[:angle] || 0

  @center_x = options[:center_x] || 0.5
  @center_y = options[:center_y] || 0.5

  @scale_x  = options[:scale_x] || 1
  @scale_y  = options[:scale_y] || 1

  @color    = options[:color] || Gosu::Color.argb(0xff_ffffff)
  @alpha    = options[:alpha] || 255
  @mode = options[:mode] || :default

  @paused = false
  @speed = 0
  @debug_color = Gosu::Color::GREEN
  @world_center_point = Vector.new(0, 0)

  setup

  @debug_text = Text.new("", color: @debug_color, y: @position.y - (height * scale), z: 9999)
  @debug_text.x = @position.x
  if @radius == 0 || @radius.nil?
    @radius = if options[:radius]
                options[:radius]
              else
                @image.respond_to?(:width) ? ((@image.width + @image.height) / 4) * scale : 1
              end
  end
end

Instance Attribute Details

#alpha ⇒ Object

Returns the value of attribute alpha.



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# File 'lib/cyberarm_engine/game_object.rb', line 7

def alpha
  @alpha
end

#angle ⇒ Object

Returns the value of attribute angle.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def angle
  @angle
end

#center_x ⇒ Object

Returns the value of attribute center_x.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def center_x
  @center_x
end

#center_y ⇒ Object

Returns the value of attribute center_y.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def center_y
  @center_y
end

#color ⇒ Object

Returns the value of attribute color.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def color
  @color
end

#image ⇒ Object

Returns the value of attribute image.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def image
  @image
end

#last_position ⇒ Object

Returns the value of attribute last_position.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def last_position
  @last_position
end

#mode ⇒ Object

Returns the value of attribute mode.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def mode
  @mode
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def options
  @options
end

#paused ⇒ Object

Returns the value of attribute paused.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def paused
  @paused
end

#position ⇒ Object

Returns the value of attribute position.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def position
  @position
end

#radius ⇒ Object

Returns the value of attribute radius.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def radius
  @radius
end

#scale_x ⇒ Object

Returns the value of attribute scale_x.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def scale_x
  @scale_x
end

#scale_y ⇒ Object

Returns the value of attribute scale_y.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def scale_y
  @scale_y
end

#velocity ⇒ Object

Returns the value of attribute velocity.



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# File 'lib/cyberarm_engine/game_object.rb', line 5

def velocity
  @velocity
end

Class Method Details

.destroy_all ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 235

def self.destroy_all
  INSTANCES.clear
  if window.current_state
    window.current_state.game_objects.each do |o|
      window.current_state.game_objects.delete(o) if o.is_a?(self.class)
    end
  end
end

.each_circle_collision(object, _resolve_with = :width, &block) ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 217

def self.each_circle_collision(object, _resolve_with = :width, &block)
  if object.class != Class && object.instance_of?(object.class)
    window.current_state.game_objects.select { |i| i.instance_of?(self) }.each do |o|
      distance = Gosu.distance(o.x, o.y, object.x, object.y)
      block.call(o, object) if distance <= o.radius + object.radius && block
    end
  else
    lista = window.current_state.game_objects.select { |i| i.instance_of?(self) }
    listb = window.current_state.game_objects.select { |i| i.instance_of?(object) }
    lista.product(listb).each do |o, o2|
      next if o == o2

      distance = Gosu.distance(o.x, o.y, o2.x, o2.y)
      block.call(o, o2) if distance <= o.radius + o2.radius && block
    end
  end
end

Instance Method Details

#_x_visible ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 104

def _x_visible
  x.between?((window.width / 2) - @world_center_point.x, (window.width / 2) + @world_center_point.x) ||
    x.between?((@world_center_point.x - window.width / 2), (window.width / 2) + @world_center_point.x)
end

#_y_visible ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 109

def _y_visible
  y.between?((window.height / 2) - @world_center_point.y, (window.height / 2) + @world_center_point.y) ||
    y.between?(@world_center_point.y - (window.height / 2), (window.height / 2) + @world_center_point.y)
end

#all ⇒ Object

NOTE: This could be implemented more reliably



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# File 'lib/cyberarm_engine/game_object.rb', line 213

def all
  INSTANCES.select { |i| i.instance_of?(self) }
end

#button_down(id) ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 159

def button_down(id)
end

#button_up(id) ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 156

def button_up(id)
end

#circle_collision?(object) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cyberarm_engine/game_object.rb', line 181

def circle_collision?(object)
  distance = Gosu.distance(x, y, object.x, object.y)
  distance <= radius + object.radius
end

#debug_text(text) ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 70

def debug_text(text)
  @debug_text.text = text
  @debug_text.x = @position.x - (@debug_text.width / 2)
  @debug_text.y = @position.y - (@debug_text.height + radius + height)
end

#destroy ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 204

def destroy
  if window.current_state
    window.current_state.game_objects.each do |o|
      window.current_state.game_objects.delete(o) if o.is_a?(self.class) && o == self
    end
  end
end

#draw ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 50

def draw
  if @image
    @image.draw_rot(@position.x, @position.y, @position.z, @angle, @center_x, @center_y, @scale_x, @scale_y,
                    @color, @mode)
  end

  if $debug
    show_debug_heading
    Gosu.draw_circle(@position.x, @position.y, radius, 9999, @debug_color)
    if @debug_text.text != ""
      Gosu.draw_rect(@debug_text.x - 10, (@debug_text.y - 10), @debug_text.width + 20, @debug_text.height + 20,
                        Gosu::Color.rgba(0, 0, 0, 200), 9999)
      @debug_text.draw
    end
  end
end

#each_circle_collision(object, _resolve_with = :width, &block) ⇒ Object

Duplication… so DRY.



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# File 'lib/cyberarm_engine/game_object.rb', line 187

def each_circle_collision(object, _resolve_with = :width, &block)
  if object.class != Class && object.instance_of?(object.class)
    window.current_state.game_objects.select { |i| i.instance_of?(object.class) }.each do |o|
      distance = Gosu.distance(x, y, object.x, object.y)
      block.call(o, object) if distance <= radius + object.radius && block
    end
  else
    list = window.current_state.game_objects.select { |i| i.instance_of?(object) }
    list.each do |o|
      next if self == o

      distance = Gosu.distance(x, y, o.x, o.y)
      block.call(self, o) if distance <= radius + o.radius && block
    end
  end
end

#find_closest(game_object_class) ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 162

def find_closest(game_object_class)
  best_object = nil
  best_distance = 100_000_000_000 # Huge default number

  game_object_class.all.each do |object|
    distance = Gosu.distance(x, y, object.x, object.y)
    if distance <= best_distance
      best_object = object
      best_distance = distance
    end
  end

  best_object
end

#heading(ahead_by = 100, _object = nil, angle_only = false) ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 114

def heading(ahead_by = 100, _object = nil, angle_only = false)
  direction = Gosu.angle(@last_position.x, @last_position.x, @position.x, position.y).gosu_to_radians

  _x = @position.x + (ahead_by * Math.cos(direction))
  _y = @position.y + (ahead_by * Math.sin(direction))

  return direction if angle_only
  return Vector.new(_x, _y) unless angle_only
end

#height ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 133

def height
  @image ? @image.height * scale : 0
end

#look_at(object) ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 177

def look_at(object)
  # TODO: Implement
end

#pause ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 137

def pause
  @paused = true
end

#rotate(int) ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 145

def rotate(int)
  self.angle += int
  self.angle %= 360
end

#scale ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 76

def scale
  if @scale_x == @scale_y
    @scale_x
  else
    false
    # maths?
  end
end

#scale=(int) ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 85

def scale=(int)
  self.scale_x = int
  self.scale_y = int
  self.radius = ((@image.width + @image.height) / 4) * scale
end

#show_debug_heading ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 124

def show_debug_heading
  _heading = heading
  Gosu.draw_line(@position.x, @position.y, @debug_color, _heading.x, _heading.y, @debug_color, 9999)
end

#unpause ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 141

def unpause
  @paused = false
end

#update ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 67

def update
end

#visible ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 91

def visible
  true
  # if _x_visible
  #   if _y_visible
  #     true
  #   else
  #     false
  #   end
  # else
  #   false
  # end
end

#width ⇒ Object 



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# File 'lib/cyberarm_engine/game_object.rb', line 129

def width
  @image ? @image.width * scale : 0
end